August 17, 2017    Mr. H. Robert Penner  HomeFed Village III Master, LLC  1903 Wright Place, Suite 220  Carlsbad, CA 92008    ATTN:    MR. H. ROBERT PENNER    SITE:    OTAY RANCH VILLAGE 3       HERITAGE ROAD      CHULA VISTA, CALIFORNIA          RE:    TRANSMITTAL OF SITE ASSESSMENT AND HUMAN HEALTH VAPOR RISK  ASSESSMENT REPORT    Dear Mr. Penner:     Pursuant to HomeFed Village III Master LLC’s request, TRC is please to present the Site Assessment  and  Human  Health  Vapor  Risk  Assessment  Report  for  the  Otay  Ranch  Village  3  site  located  on  Heritage Road in Chula Vista, California.    Please call us at (858) 505‐8881 if you have any questions.    Sincerely,    TRC       Gary McCue, PG, CHG    cc:   Robert Shoecraft, Shoecraft Burton, LLP        This page intentionally left blank SITE ASSESSMENT  AND  HUMAN HEALTH VAPOR RISK ASSESSMENT REPORT    OTAY RANCH VILLAGE 3  Heritage Road  Chula Vista, California          Prepared For:      HOMEFED VILLAGE III MASTER, LLC  Carlsbad, California      Prepared By:      TRC Solutions, Inc.  San Diego, California              August 2017 This page intentionally left blank     Results you can rely on     SITE ASSESSMENT  AND  HUMAN HEALTH VAPOR RISK ASSESSMENT REPORT    August 17, 2017    Otay Ranch Village 3  Heritage Road  Chula Vista, California  DEH Case Number DEH2017‐LSAM‐000443  Geotracker Global ID T10000010433    Prepared For:    HomeFed Village III Master, LLC  1903 Wright Place, Suite 220  Carlsbad, CA 92008    Prepared By:          Brian Kettmann, PG 9131  Senior Project Geologist   Nyree A. Melancon  Senior Risk Assessor    Gary McCue, PG 5886, CHG 434  Principal Hydrogeologist    TRC Solutions, Inc.  4393 Viewridge Avenue, Suite A  San Diego, California 92123    This page intentionally left blank Site Assessment and Human Health Vapor Risk Assessment Report  Otay Ranch Village 3, Heritage Road, Chula Vista, CA  August 17, 2017    TABLE OF CONTENTS  SECTION                          PAGE  1.0  INTRODUCTION ................................................................................................................................ 1  2.0  SITE SETTING .................................................................................................................................... 1  2.1  REGIONAL GEOLOGIC SETTING ........................................................................................... 1  2.2  REGIONAL HYDROGEOLOGIC SETTING ............................................................................... 2  3.0  BACKGROUND .................................................................................................................................. 3  4.0  OBJECTIVES ...................................................................................................................................... 4  5.0  SITE ACTIVITIES ................................................................................................................................ 4  5.1  SOIL GAS ASSESSMENT ....................................................................................................... 4  5.1.1  Soil Gas Probe Installation Activities ..................................................................... 5  5.1.2  Soil Gas Probe Sampling Activities ......................................................................... 6  5.1.3  Soil Sampling Activities .......................................................................................... 8  6.0  HUMAN HEALTH VAPOR RISK ASSESSMENT .................................................................................... 8  6.1  DATA EVALUATION ............................................................................................................. 9  6.2  EXPOSURE ASSESSMENT ..................................................................................................... 9  6.2.1  Potential Receptors and Exposure Pathways ........................................................ 9  6.2.2  Indoor Air Concentrations ..................................................................................... 9  6.2.3  Ambient Air Concentrations ................................................................................ 10  6.2.4  Exposure Parameters ........................................................................................... 11  6.2.5  Intake Estimate .................................................................................................... 11  6.3  TOXICITY ASSESSMENT ..................................................................................................... 11  6.3.1  Noncarcinogenic Health Effects ........................................................................... 12  6.3.2  Carcinogenic Health Effects ................................................................................. 12  6.4  RISK CHARACTERIZATION ................................................................................................. 13  6.4.1  Noncarcinogenic Health Effects ........................................................................... 13  6.4.2  Carcinogenic Health Effects ................................................................................. 13  7.0  FINDINGS ........................................................................................................................................ 14  7.1  HANDHELD DETECTOR AND PRESSURE GAUGE RESULTS ................................................. 14  7.2  TEDLAR BAG SAMPLING RESULTS ..................................................................................... 15  7.3  MOBILE LABORATORY SAMPLING RESULTS ...................................................................... 15  7.3.1  Methane Results in Soil Vapor ............................................................................. 16  7.3.2  VOC Results in Soil Vapor ..................................................................................... 16  7.4  HUMAN HEALTH VAPOR RISK ASSESSMENT RESULTS ...................................................... 17  7.4.1  Noncarcinogenic Health Effects ........................................................................... 17  7.4.2  Carcinogenic Health Effects ................................................................................. 18  7.4.3  Uncertainties ........................................................................................................ 18  8.0  DISCUSSION OF FINDINGS ............................................................................................................. 19  8.1  METHANE RESULTS ........................................................................................................... 19  i  Site Assessment and Human Health Vapor Risk Assessment Report  Otay Ranch Village 3, Heritage Road, Chula Vista, CA  August 17, 2017    8.2  HUMAN HEALTH VAPOR RISK RESULTS ............................................................................ 20  9.0  CONCLUSIONS AND RECOMMENDATIONS .................................................................................... 21  10.0  LIMITATIONS .................................................................................................................................. 23  11.0  REFERENCES ................................................................................................................................... 23    FIGURES    1. Site Vicinity Map  2. Site Plan   3. Site Plan Showing Cross Section Locations  4. Cross Section A – A’  5. Cross Section B – B’  6. Site Plan Showing Methane Concentrations in Soil Vapor at 5 Feet Below Grade  7. Site Plan Showing Methane Concentrations in Soil Vapor Deeper Than 5 Feet Below Grade  8. Site Plan Showing Potential Noncancer and Cancer Risk Values    TABLES    1. Soil Gas Probe Construction Detail  2. Soil Gas Probe Handheld Detector Methane Results‐LEL Percentage  3. Soil Gas Probe Handheld Detector Methane Results‐PPMV  4. Soil Gas Mobile and Stationary Laboratory Analytical Results‐Fixed Gases  5. Soil Gas Mobile Laboratory Analytical Results‐VOCs    APPENDICES    A. Groundwater Laboratory Analytical Results‐Storm Drain Utility Trench  B. General Field Procedures, Calibration Reports and Soil Gas Probe Permits   C. Soil Gas Laboratory Analytical Results   D. Human Health Vapor Risk Assessment    ii  Site Assessment and Human Health Vapor Risk Assessment Report  Otay Ranch Village 3, Heritage Road, Chula Vista, CA  August 17, 2017    1.0  INTRODUCTION    Pursuant  to  HomeFed  Village  III  Master,  LLC’s  request,  TRC  Solutions  Inc.  (TRC)  has  prepared  this  Site  Assessment and Human Health Vapor Risk Assessment Report for the portion of the Otay Ranch Village 3  (Village 3) development located generally east of Heritage Road, south of the Otay Landfill, north of Main  Street and west of Avenida Escaya in Chula Vista, California (Site; Figures 1 and 2). This report presents  the  results  of  TRC’s  site  assessment  and  human  health  vapor  risk  assessment  (Vapor  HHRA)  activities  conducted in June and July 2017. This work was conducted to evaluate the potential vapor risk to future  residential and commercial receptors at the Site.      2.0  SITE SETTING    In 2016, GEOCON Incorporated (GEOCON) conducted a geotechnical investigation for purposes of future  development at the Site. Information within this section relies upon GEOCON’s 2016 report.    Village 3 is located south of the Otay Landfill, west of the Otay Quarry and Wolf Canyon, northeast of the  eastern terminus of Main Street and north of the Otay River Valley, in the southeastern portion of Chula  Vista,  California.  The  property,  including  Otay  Village  4,  is  approximately  436  acres;  however,  we  understand the area to be developed is approximately 280 acres, with the remainder set aside as Preserve  Open Space (GEOCON, 2016).  The Site comprises approximately 90 acres.     Village 3 consists of a series of south trending ridges and canyons draining into the Otay River. Elevations  range from approximately 142 feet above North American Vertical Datum 88 (NAVD) at the southwestern  portion  of  the  Site  (adjacent  to  existing  Main  Street)  to  approximately  480  feet  above  NAVD  on  the  northwest  portion  of  the  Site.  Village  3  vegetation  consisted  of  sparse  native  coastal  sage  scrub  and  grassland habitats disturbed by farming. Some riparian vegetation occurs within Wolf Canyon to the east  of proposed development (GEOCON, 2016).     Development  for  Village  3  will  generally  occur  west  of  Wolf  Canyon  and  south  of  the  Otay  Landfill  property. Local areas will be designated as open space and preserve for environmental purposes (MSCP)  to the southeast and east. The Site will accommodate single and multi‐family residential homes (107.1  and 13.3 acres, respectively), mixed use (7.4 acres), park sites (25.9 acres), private open space (5.1 acres),  school site (8.3 acres), community purpose facilities (4.3 acres), industrial/office (36.5 acres), circulation  roadways (35.8 acres), open space (34.3 acres), and preserve land (158.1 acres). Heritage Road will extend  to the southwest bisecting the industrial uses from the residential land uses and providing access to Village  3. Main Street is proposed to extend to the east along the north side of the Otay River (GEOCON, 2016).     Grading of Village 3 will consist of maximum cuts and fills of approximately 60 and 115 feet, respectively,  with cut and fill slopes having a maximum height of 70 and 115 feet, respectively, and a maximum slope  inclination of 2:1 (horizontal to vertical) (GEOCON, 2016).      2.1  REGIONAL GEOLOGIC SETTING    Village 3 is located within the coastal plain of San Diego County. The coastal plain is underlain by a thick  sequence of relatively undisturbed and non‐conformable sedimentary rocks that range in age from Upper  Cretaceous  through  the  Pleistocene  with  intermittent  deposition.  Geomorphically,  the  coastal  plain  is  1  Site Assessment and Human Health Vapor Risk Assessment Report  Otay Ranch Village 3, Heritage Road, Chula Vista, CA  August 17, 2017    characterized by a stair‐stepped series of marine terraces, which are younger to the west and have been  dissected  by  west  flowing  rivers  that  drain  the  Peninsular  Ranges  to  the  east.  The  coastal  plain  is  a  relatively stable block that is dissected by faults consisting of the potentially active La Nacion Fault Zone  and the active Rose Canyon Fault Zone. The Peninsular Ranges are also dissected by the Elsinore Fault  Zone that is associated with and sub‐parallel to the San Andreas Fault Zone, which is the plate boundary  between the Pacific and North American Plates (GEOCON, 2016).      Village 3 is located on  the central portion of the coastal plain.  Marine sedimentary units make up  the  majority  of  geologic  units  encountered  on  the  site  and  consist  of  a  Pleistocene  age  Terrace  Deposits,  Tertiary‐age  San  Diego  Formation,  and  Tertiary  age  Otay  Formation.    The  sedimentary  units  overlie  crystalline  basement  Metavolcanic  Rocks.    The  Terrace  Deposits  are  shallow  marine  and  non‐marine  sandstone units with layers containing cobble and boulders up to 2 feet in diameter. This unit is located  on the southern half of Village 3. The San Diego Formation is on the northwestern portion of the Site  above  an  elevation  of  approximately  430  feet  NAVD.    The  Otay  Formation  typically  consists  of  three  lithostratagraphic members composed of a basal conglomerate member, a middle gritstone member and  an upper sandstone/siltstone/claystone member with a maximum reported regional thickness of roughly  400  feet.  The  upper  member  of  the  Otay  Formation  is  present  on  Village  3.    In  addition,  bentonitic  claystone layers are common within the upper member typically deposited as highly consolidated volcanic  ash deposits. The thickness of the Otay Formation is in excess of 300 feet thick on Village 3 (GEOCON,  2016).    2.2  REGIONAL HYDROGEOLOGIC SETTING    The Site is located in the Otay Valley Hydrologic Area (HA) of the Otay Hydrologic Unit. Groundwater within  the Otay Valley HA is designated as having beneficial uses for existing municipal, agricultural, and industrial  supplies (California Regional Water Quality Control Board, San Diego Region [CRWQCB], 2011).    The Otay River is located south of the Site and flows from east to west (United States Geological Survey  [USGS], 1975a & 1975b). Water flow across the riverbed is variable. The Otay River has been designated  as  having  existing  beneficial  uses  as  a  source  for  agricultural  water  supplies,  for  non‐contact  water  recreational  sports,  for  warm  freshwater  habitat,  as  a  wildlife  habitat  water  supply,  and  as  a  rare,  threatened, or endangered species habitat water supply. In addition, the Otay River has been designated  as  having  potential  beneficial  uses  as  a  source  for  industrial  water  supplies,  and  for  contact  water  recreational sports (CRWQCB, 2011).    During GEOCON’s geotechnical investigation, they did not encounter a static groundwater table in the  exploratory excavations performed for this study. They expect that the groundwater table is in excess of  100  feet  below  the  lowest  existing  grades  at  Village  3.  It  is  not  uncommon  for  seepage  conditions  to  develop  where  none  previously  existed  due  to  the  permeability  characteristics  of  the  geologic  units  encountered. During the rainy season, perched water conditions are likely to develop within the drainage  areas  that  may  require  special  consideration  during  grading  operations.  Groundwater  elevations  are  dependent on seasonal precipitation, irrigation, and land use, among other factors, and vary as a result  (GEOCON, 2016).        2  Site Assessment and Human Health Vapor Risk Assessment Report  Otay Ranch Village 3, Heritage Road, Chula Vista, CA  August 17, 2017    3.0  BACKGROUND    The  Site  is  a  future  residential  and  commercial  community  with  plans  to  build  single  and  multi‐family  residential  homes,  mixed  use,  park  sites,  private  open  space,  a  charter  school  (Lots  814  and  815),  community  purpose  facilities  and  industrial/office  space.    Although  data  collected  from  the  planned  school  property  is  presented  in  this  report,  the  Vapor  HHRA  does  not  include  the  charter  school.    A  separate Vapor HHRA is planned for the school property.     In late April 2017, during trench excavation activities for a future storm drain utility, contractors noticed  the presence of what appeared to be perched groundwater and petroleum hydrocarbon odors emanating  from the bottom of the trench excavation.      In May 2017, TRC was hired to assist with the perched groundwater and provide environmental consulting  related services.  TRC sampled the perched groundwater at the presumed source of the odors where it  appeared groundwater was flowing into the trench, approximately 30 feet downgradient of the source,  and at the end of the trench excavation approximately 450 feet downgradient of the source.  Groundwater  concentrations at the source (sample GS‐01) and 30 feet downgradient of the source (sample GW‐01)  indicated the presence of petroleum hydrocarbon impacts in groundwater (Appendix A).  Based on this  information, a Voluntary Assistance Program (VAP) case application was submitted to the County of San  Diego  Department  of  Environmental  Health  (DEH),  Site  Assessment  and  Mitigation  (SAM)  department  (DEH Case Number DEH2017‐LSAM‐000443; Geotracker Global ID T10000010433) requesting assistance  from  the  DEH  in  identifying  all  Potentially  Responsible  Parties  and  to  review  and  comment  on  plans,  laboratory  data,  and  reports  that  may  be  generated  as  a  result  of  the  discovery  of  the  impacted  groundwater.      In  June  2017,  in  consultation  with  HomeFed  Village  III  Master,  LLC,  TRC  recommended  that  site  assessment activities be conducted in general accordance with Section 4.II of the DEH SAM Manual (DEH,  2011). This includes:     Characterize the types of contaminants and chemicals of potential concern (COPCs) present at  the site;   Develop a comprehensive understanding of site geology and hydrogeology;   Delineate the extent and distribution of COPCs within the subsurface environment, including soil,  groundwater and soil gas;   Characterize the actual and potential migration paths of the subsurface COPCs;    Identify the sources of the COPCs; and   Identify and assess the potential adverse effects to public health and the environment.     Due to  the ongoing  development of the Site, the first priority  was to assess the potential  presence of  volatile organic compounds (VOCs) and methane in soil gas, and if present, assess the potential risk to  future occupants of planned structures from the impacted soil gas.  This report assesses the potential risk  to humans based on the detected concentrations of the COPCs in soil gas.      The results from this investigation are discussed in this report.      3  Site Assessment and Human Health Vapor Risk Assessment Report  Otay Ranch Village 3, Heritage Road, Chula Vista, CA  August 17, 2017    4.0  OBJECTIVES    The overall objectives of this investigation were the following:     Assess the extent of methane and VOC impacts in soil gas; and   Evaluate  potential  for  adverse  human  health  effects  that  may  result  from  exposure  to  COPCs  detected in soil gas;    5.0  SITE ACTIVITIES    Based on the overall objectives for this scope of work, TRC conducted soil gas site assessment activities with  the installation of 40 borings and the sampling of 78 soil gas probes (Figure 3).  Details of the field activities  are discussed below.  5.1  SOIL GAS ASSESSMENT    The soil gas assessment, including soil gas probe installation and probe sampling, were conducted during  multiple mobilizations between June 7, 2017 and July 19, 2017.  Prior to each mobilization, a soil gas probe  permit  was  obtained  from  DEH.    The  proposed  soil  gas  probe  locations  were  marked  out  by  TRC  and  utilities were marked out by Underground Service Alert prior to ground disturbance. The boring locations  were also cleared using a hand auger to 5 feet below, as necessary.  Refer to Appendix B for general field  procedures and copies of soil gas probe permits.    The soil borings were drilled using a direct push drill rig.  The single, dual and triple nested soil gas probes  were constructed in general accordance with the Department of Toxic Substances Control (DTSC) Advisory  –  Active  Soil  Gas  Investigations,  July  2015  (DTSC,  2015).    In  accordance  with  DTSC  guidelines,  at  each  interval, the probes were composed of a permeable probe tip and connected to the surface with ¼‐ inch  diameter tubing, embedded with 1 foot of #3 sand pack, 1 foot of dry granular bentonite and hydrated  bentonite grout.  The probe closest to the surface was embedded in 1 foot of #3 sand with 1 foot of dry  granular bentonite and hydrated bentonite to the surface (DTSC, 2015).       The single, dual and triple nested soil gas probe depths were based on the following:     At each location, one soil gas probe was installed at approximately 5 feet below grade (fbg) in  general accordance with regulatory standards for health risk assessment evaluations; and   At  each  location,  a  second  probe  was  installed  approximately  5  feet  or  less  into  native  soil  if  native soil was estimated to be greater than approximately 5 fbg and less than approximately 25  fbg; or   A second probe was installed at approximately 25 fbg if native soil was estimated to be greater  than 25 fbg.    At two locations on Lot 814, a third probe was installed between the 5 fbg probe and the bottom  probe, which at the time of installation, were planned to be installed deeper than other probes  at  the  site.    The  middle  probe  was  intended  to  provide  insight  into  the  change  in  PCOC  concentrations  with  depth.    Installation  of  a  middle  probe  between  the  shallow  and  deeper  probe was not implemented at other locations because the middle probes’ PCOC concentrations  were generally similar to the deeper probes’ PCOC concentrations.    4  Site Assessment and Human Health Vapor Risk Assessment Report  Otay Ranch Village 3, Heritage Road, Chula Vista, CA  August 17, 2017      There  were  some  exceptions  to  these  protocols  and  they  are  discussed  in  Section  5.1.1  below,  where  appropriate.    Estimated  fill  and  native  soil  depths  were  determined  by  GEOCON  based  on  their  geotechnical evaluation.  Refer to Table 1 for soil gas probe construction details.    5.1.1  Soil Gas Probe Installation Activities    Soil  gas  probe  installation  activities  were  conducted  on  three  mobilizations  and  are  detailed  below   (Figure 3; Table 1):     June 7, 2017: Soil gas probes SGP‐01 through SGP‐10 were installed at the future charter school  location and alongside Heritage Road.  Probe depths ranged from 5 fbg to 32 fbg depending on  the depth to the native soil.  Soil gas probes SGP‐02 and SGP‐03 were triple nested probes;       June  23,  2017  and  June  26,  2017:  The  following  soil  gas  probes  were  installed  within  the  residential and commercial lots with depths ranging from 5 to 30 fbg.      SGP‐42  SGP‐211  SGP‐51  SGP‐253  SGP‐94  SGP‐342  SGP‐101  SGP‐699  SGP‐108  SGP‐711  SGP‐126  SGP‐735  SGP‐196  SGP‐745  SGP‐202  SGP‐760  SGP‐769    The deeper soil gas probes for SGP‐196 and SGP‐342 were installed at approximately 30 fbg and  32 fbg just above native soil;     July 12, 2017 and July 13, 2017: The following soil gas probes were installed within the residential  and commercial lots with depths ranging from 5 to 30 fbg.      SGP‐60  SGP‐816  SGP‐73  SGP‐817  SGP‐223  SGP‐818  SGP‐324  SGP‐824  SGP‐335  SGP‐825  SGP‐352  SGP‐LOT A West  SGP‐LOT A East       Soil gas probe SGP‐816 hit refusal at 3 fbg and therefore, only one probe was installed.  The deeper  soil gas probe for SGP‐335 was installed at approximately 30 fbg into native soil.    5  Site Assessment and Human Health Vapor Risk Assessment Report  Otay Ranch Village 3, Heritage Road, Chula Vista, CA  August 17, 2017    Refer to Figures 3 through 5 for a cross section depicting fill and native soil depths at the Site.    Soil Gas Probe Nomenclature  With the exception of soil gas probes SGP‐01 through SGP‐10, which were the first set of probes installed,  the soil gas probe identification number corresponds to the residential or commercial lot (identifications)  IDs that were identified by HomeFed Village III Master, LLC.    5.1.2  Soil Gas Probe Sampling Activities    Soil gas samples were collected by the following methods:     Field measurement: For methane, carbon dioxide, and oxygen analysis only, select soil gas probes  were analyzed using handheld field detection instruments (detectors).  The handheld detectors  measured methane as well as carbon dioxide, and oxygen.  A pressure gauge measured soil gas  pressure (Tables 2 and 3).  The methane detectors were calibrated prior to use each mobilization.  The calibration results are located in Appendix B;   Tedlar Bag: For methane, carbon dioxide, and oxygen analysis only, select soil gas probes were  sampled using Tedlar bags to contain the samples and submitted to a stationary laboratory for  analysis (Table 4);    Mobile Laboratory: All soil gas probes, except SGP‐8 and SGP‐10 in Heritage Road, were sampled  for methane with a mobile laboratory. These samples were collected using 50 milliliter (mL) glass  syringes, in accordance with DTSC requirements (Table 5; DTSC, 2015); and   Mobile Laboratory: All soil gas probes were sampled for VOCs with a mobile laboratory.  These  samples were collected using 50 mL glass syringes, in accordance with DTSC requirements (Table  5; DTSC, 2015).    During  Tedlar  bag  and  mobile  laboratory  testing,  leak  testing  was  conducted  to  assess  if  a  probe  was  drawing in atmospheric gas rather than vadose zone gas. A tracer compound was used to test for leaks  around the top of the probe and any aboveground connections within the sampling equipment. The tracer  compound was placed around the exposed probe tubing during sample collection.  The leak testing tracer  compound was not detected during laboratory testing.  The soil  gas samples were collected with flow  regulated  to  be  200  milliliter  per  minute  (ml/min)  or  less.    Each  sample  was  labeled  with  the  project  number, soil gas probe number, sample depth, and date of collection.      Soil Gas Probe Analysis  The soil gas probes sampled by a stationary and/or mobile laboratory were analyzed for the following:     Methane: United States Environmental Protection Agency (USEPA) Method 8015B;    VOCs: USEPA Method 8260B; and   Tedlar  bag  samples  were  also  analyzed  for  Oxygen  and  Carbon  Dioxide:  American  Society  for  Testing and Materials (ASTM) D1946‐90.    Sample collection, handling, preservation, shipment, and chain of custody procedures were all conducted  in accordance with standard regulatory protocols.  Chain of custody protocol was followed for all samples  collected for laboratory analysis.  The chain of custody form accompanied the samples from the sampling  locality to the laboratory, providing a continuous record of possession prior to analysis.  6  Site Assessment and Human Health Vapor Risk Assessment Report  Otay Ranch Village 3, Heritage Road, Chula Vista, CA  August 17, 2017    Soil gas sampling was conducted on five separate mobilizations and the details are below:       June 7, 2017 and June 8, 2017:  Soil gas probes SGP‐01 through SGP‐10 were sampled for methane  using a handheld methane detector and for VOCs using a mobile laboratory.  Sampling activities  were conducted by Environmental Support Technologies (EST) (Tables 2 and 5; Appendix C);   June 15, 2017: Due to elevated methane readings and location relative to potential sources and/or  receptors, soil gas probes SGP‐02, SGP‐06 and SGP‐10 were sampled using Tedlar bags to contain  the  samples.  Sampling  was  conducted  by  EST  and  the  samples  were  submitted  to  Sunstar  Laboratories within the 48 hour holding time for methane analysis (Table 4; Appendix C);   June 26, 2017 through June 28, 2017: The following soil gas probes were sampled :    SGP‐05  SGP‐06  SGP‐07  SGP‐09  SGP‐42  SGP‐51  SGP‐94  SGP‐101  SGP‐108  SGP‐126  SGP‐196  SGP‐202  SGP‐211  SGP‐253  SGP‐342  SGP‐699  SGP‐711  SGP‐735  SGP‐745  SGP‐760  SGP‐769    These soil gas probes were sampled for methane using a handheld methane detector (Table 3)  and for VOCs using a mobile laboratory (Table 5; Appendix C).  Sampling activities were conducted  by EST;     July 12, 2017 through July 14, 2017:  The following soil gas probes were sampled for methane  using H&P Geochemistry’s mobile laboratory (Table 4; Appendix C):    SGP‐01  SGP‐02  SGP‐03  SGP‐04  SGP‐05  SGP‐06    SGP‐07  SGP‐09  SGP‐42  SGP‐51  SGP‐94  SGP‐101  SGP‐108  SGP‐126  SGP‐196  SGP‐202  SGP‐211  SGP‐253    SGP‐342  SGP‐699  SGP‐711  SGP‐735  SGP‐745  SGP‐760  SGP‐769  The only soil gas probes not sampled were SGP‐08 and SGP‐10.     July 17, 2017 and July 18, 2017:  The following soil gas probes were sampled for methane and  VOCs using H&P Geochemistry’s mobile laboratory (Tables 4 and 5; Appendix C):  SGP‐60  SGP‐73  SGP‐223  SGP‐324  SGP‐335  SGP‐352     SGP‐816  SGP‐817  SGP‐818  SGP‐824  SGP‐825  SGP‐LOT A West  SGP‐LOT A East  7  Site Assessment and Human Health Vapor Risk Assessment Report  Otay Ranch Village 3, Heritage Road, Chula Vista, CA  August 17, 2017    5.1.3  Soil Sampling Activities    Multiple  soil  samples  were  collected  for  potential  physical  parameter  laboratory  analysis  during  the  installation  activities.    Soil  samples  were  collected  using  a  direct  push  drill  rig  by  driving  a  1.25  inch  diameter acetate sleeve to the specified sample depth.  All soil samples were capped with Teflon tape and  labeled with the project number, soil vapor probe or Lot number, sample depth, and date of collection.   TRC selected one soil sample from Lot 129 for analysis (Appendix C).  The soil sample from Lot 129 was  sampled  and  analyzed  due  to  its  proximity  to  Lot  126,  which  was  reported  to  have  higher  methane  concentrations compared to most other lots.  The soil sample could not be collected on Lot 126 due to  access issues therefore,  the  closest location that could  be safely accessed was Lot 129.  This sample  is  considered  to  be  generally  representative  of  the  fill  soils  used  across  the  site.    This  soil  sample  was  analyzed for the following physical parameters:     Air Permeability: Method American Petroleum Institute (API) RP 40;   USCS Soil Type: Method ASTM D2487;   Particle (Grain) Size: Method ASTM D4464;   Atterberg Limits: Method ASTM D4318;   Bulk Density: Method ASTM D2937; and    Total and Water Filled Porosity: Method API RP 40.    The physical parameter laboratory results for the soil sample collected from Lot 129 was used for the  Vapor HHRA.    6.0  HUMAN HEALTH VAPOR RISK ASSESSMENT    The  Vapor  HHRA  has  been  prepared  by  TRC  to  provide  a  quantitative  assessment  of  the  potential  for  adverse  human  health  effects  that  may  result  from  exposure  to  COPCs  detected  in  soil  gas  at  select  locations at the Site.        This Vapor HHRA was performed in accordance with California Environmental Protection Agency (CalEPA)  and USEPA guidance set forth in the following documents and models:   Guidance for the Evaluation and Mitigation of Subsurface Vapor  Intrusion to Indoor Air (Vapor  Intrusion Guidance) (DTSC, 2011);   Human Health Risk Assessment Note 1: Recommended DTSC Default Exposure Factors for Use in  Risk Assessment at California Hazardous Waste Sites and Permitted Facilities (DTSC, 2014);   Johnson and Ettinger (J&E) Model (1991), made available in spreadsheet format by the USEPA  (2004) and adopted and republished by the DTSC (updated December 2014);   Risk Assessment Guidance for Superfund: Volume I—Human Health Evaluation Manual (Part A)  (USEPA, 1989);    User’s Guide for Evaluating Subsurface Vapor Intrusion Into Buildings, Office of Emergency and  Remedial Response (USEPA, 2004); and   Risk Assessment Guidance for Superfund: Volume I—Human Health Evaluation Manual (Part F,  Supplemental Guidance for Inhalation Risk Assessment) (USEPA, 2009).    The complete Vapor HHRA, including tables and the J&E models are included in Appendix D of this report.    8  Site Assessment and Human Health Vapor Risk Assessment Report  Otay Ranch Village 3, Heritage Road, Chula Vista, CA  August 17, 2017    6.1  DATA EVALUATION    In June and July 2017, 99 soil gas samples, including replicate samples, were collected from 78 soil gas  probes at depths ranging from 5 to 32 fbg and were analyzed for VOCs using USEPA Method 8260B.  All  VOCs detected in soil gas were considered COPCs in this Vapor HHRA.  VOCs that were not detected in  any  of  the  samples  collected  during  the  investigation  were  not  identified  as  COPCs  requiring  further  evaluation in the HHRA. The dataset for this sampling event is presented in Appendix D, Table 1.      Methane was also detected in soil vapor.  The two primary health concerns associated with methane gas  are  asphyxiation  and  explosions.    Methane  poses  an  asphyxiation  hazard  only  if  vapors  accumulate  in  confined  spaces  and  displace  oxygen.    Methane  can  also  present  a  fire  or  explosion  hazard  if  concentrations exceed the lower explosive limit (LEL), which is the concentration at which the gas can  ignite, burn, or explode.  At concentrations above the upper explosive limit (UEL), the gas has displaced  enough oxygen that the ignition potential is no longer present.  The LEL and UEL for methane gas is 5 and  15 % by volume (%v), respectively, in the presence of atmospheric levels of oxygen (approximately 20 %v).   As such, fire or explosive conditions are generally not possible within the subsurface soil since oxygen  concentrations  are  below  atmospheric  levels  and  the  soil  cannot  heat  up  sufficiently  to  support  combustion.  However, methane gas may accumulate in subsurface structures with adequate levels of  oxygen, such as utility vaults and corridors.  Methane gas is rapidly diluted as it exits soil vapor into the  atmosphere so the risk of fire or explosion is unlikely to occur outdoors.  Methane is evaluated in this  report as due to the concern for an explosive environment. Since methane does not have available toxicity  criteria, it was not evaluated for noncancer hazards or  cancer risks like  the other COPCs in this Vapor  HHRA.  Instead, methane will be evaluated based on relevant risk screening values.       6.2  EXPOSURE ASSESSMENT    Exposure assessment involves the identification of the potential human exposure pathways for current  and  future  land  uses  on‐  and  off‐site.  The  identification  of  potential  human  receptors  is  based  on  the  characteristics  of  the  Site,  which  include  residential  and  commercial  use.  This  section  describes  the  potential  receptors  and  exposure  pathways  selected  for  quantitative  risk  characterization,  exposure  assumptions (or factors), equations used to estimate dose for the selected receptors, and methods used  to derive indoor air concentrations.    6.2.1  Potential Receptors and Exposure Pathways    The anticipated future land uses for the Site areas considered in this HHRA are residential and commercial.  Because  COPCs  have  been  detected  in  soil  gas,  potentially  complete  pathways  are  present  for  vapor  emissions emanating from the subsurface.    6.2.2  Indoor Air Concentrations    Residential and commercial receptors on‐site could be exposed to VOCs that may infiltrate the indoor  environment  from  the  subsurface.  Analytical  results  from  soil  gas  samples  were  used  to  estimate  the  migration of VOCs from the subsurface to indoor air in this HHRA using the attenuation factors calculated  using the J&E model (1991), made available in spreadsheet format by the USEPA (2004) and adopted and  republished by the DTSC (updated December 2014).    9  Site Assessment and Human Health Vapor Risk Assessment Report  Otay Ranch Village 3, Heritage Road, Chula Vista, CA  August 17, 2017    The J&E model incorporates both convective and diffusive mechanisms for estimating the transport of  chemical  vapors  emanating  from  the  subsurface  into  indoor  spaces  located  directly  above  or  in  close  proximity to a source of chemicals. The model is a one‐dimensional analytical solution to convective and  diffusive vapor transport into indoor spaces. The model provides estimated attenuation factors that can  be used to relate vapor concentrations in the indoor space to vapor concentrations at the source. The  DTSC  J&E  screening  level  model  for  soil  vapor  spreadsheets  (updated  December  2014)  were  used  to  estimate  chemical‐and  depth‐specific  attenuation  factors  for  the  VOCs  detected  in  soil  vapor  for  residential receptors at the following depth intervals: 5, 10, 15, 20, and 30 fbg.     Inputs to the J&E model spreadsheets used for this assessment include chemical properties, future site  properties, and structural properties of residential and commercial buildings. The J&E model spreadsheets  were only used to estimate chemical‐ and depth‐specific attenuation factors which were then used to  predict potential indoor air concentrations. Default structural properties for buildings were incorporated  into the model spreadsheets. Site‐specific dry bulk density, total porosity, and water‐filled porosity were  used in the model for loamy sand.      Chemical‐ and depth‐specific attenuation factors were estimated for each approximate soil vapor depth  sampled (5, 10, 15, 20, and 30 fbg). Attenuation factors calculated for soil vapor samples were applied as  follows:   5 fbg applied to samples collected at 5.0‐9.5 fbg;   10 fbg applied to samples collected at 10‐14.5 fbg;   15 fbg applied to samples collected at 15.0‐19.5 fbg;   20 fbg applied to samples collected at 20‐29.5 fbg; and   30 fbg applied to samples collected at 30‐32 fbg.  Input parameters provided to the soil vapor J&E models are presented in Appendix D, Table 2. The J&E  models  are  provided  in  Appendix  D,  Attachment  A.  The  analytical  results  for  the  site‐specific  soil  parameters are provided in Appendix C of this report.    The attenuation factor represents the ratio between indoor air and soil gas concentration.  The indoor air  concentrations  and  attenuation  factors  are  presented  in  Appendix  D,  Table  3.  The  indoor  air  concentrations presented in Appendix D, Table 3 represents the exposure point concentrations for the  Vapor HHRA, which evaluates the noncancer hazards and cancer risks on a sample‐by‐sample basis.    6.2.3  Ambient Air Concentrations    To  address  the  soil  vapor‐to‐air  pathway  for  residential  and  commercial  receptors,  the  maximum  soil  vapor concentrations from the shallowest depth were used to estimate ambient air concentrations. A flux  model was used to estimate vapor flux to ambient air from unsaturated soil, and an air dispersion model  was used to estimate ambient air concentrations from subsurface vapor flux. The first element involves  predicting the rate of vapor flux from unsaturated soil to ground surface. The second element involves  the  calculation  of  an  air  dispersion  model  to  convert  the  vapor  flux  rate  to  an  average  ambient  air  concentration. For this assessment, the vapor flux model presented in Section 6, Figure 6‐2 of the DEH  SAM Manual was used to estimate vapor flux of chemicals from soil vapor to ambient air (DEH, 2011).   Ambient air concentrations of volatile COPCs volatilizing from the subsurface were estimated based on  10  Site Assessment and Human Health Vapor Risk Assessment Report  Otay Ranch Village 3, Heritage Road, Chula Vista, CA  August 17, 2017    the emission rate from the VOC emission model and potential dispersion in ambient air.  Refer to Appendix  D, Tables 4 and 5 for calculation of ambient air concentrations and air dispersion formulas, respectively.    6.2.4  Exposure Parameters    Exposure parameters are quantitative estimates of the frequency, duration, and magnitude of exposure  to various media based on information contained in DTSC and USEPA guidance documents. The exposure  parameters are further discussed below.    The exposure time and exposure frequency for the residential receptors are based on an exposure time  of 24 hours per day (hr/day) for an exposure frequency of 350 days per year (days/year) and commercial  receptors for an 8 hr/day for 250 days/year (DTSC, 2014).     The exposure duration for a residential receptor for assessing potential cancer risk is 26 years, which is  further broken down with a child residential receptor exposure duration being six years and for an adult  being 20 years (DTSC, 2014). The exposure duration for a commercial receptor is 25 years (DTSC, 2014).    The averaging time parameter averages exposure over a period of time. For noncarcinogenic effects, the  averaging time for a residential receptor is based on the child exposure duration of 6 years of childhood  because the Hazard Index (HI) for the child will not be exceeded by the HI for any other age (DTSC, 2011).   The 6 years is multiplied by 365 days/year and 24 hr/day for 52,560 hours and for a commercial receptor  is based on the exposure duration of 25 years multiplied by 365 days/year and 24 hr/day for 73,000 hours.  The averaging time for carcinogenic effects is based on a lifetime exposure of 70 years multiplied by 365  days per year and 24 hours a day for 613,200 hours.    6.2.5  Intake Estimate    USEPA and DTSC recommended procedures and exposure assumptions were used to estimate the daily  exposure  concentration  (EC)  or  average  daily  dose  for  each  COPC  in  indoor  air  in  the  HHRA.  An  EC  represents  an  estimate  of  a  chemical  dose  that  a  receptor  might  receive  on  a  daily  basis.  For  noncarcinogenic effects, the EC is averaged over the period of exposure. For carcinogenic effects, the EC  is averaged over a lifetime.  EC was calculated for each COPC in the indoor air pathway. EC is defined as  the average intake of chemical by the body per day.  A summary of the exposure assumptions are provided  in Appendix D, Tables 6 through 8.    6.3  TOXICITY ASSESSMENT    The purpose of the toxicity assessment is based on the following (USEPA, 1989):    Hazard Identification evaluates available information regarding the potential for a chemical to  cause adverse health effects in exposed individuals (hazard identification); and  Dose‐Response Assessment estimates the relationship between the extent of exposure and the  increased likelihood (e.g., probability or chance) and/or severity of adverse effects.  Hazard identification entails determining if a chemical can cause an increase in a particular adverse effect  (e.g.,  cancer)  and  the  likelihood  that  the  adverse  effect  will  occur  in  humans.  The  result  of  hazard  identification is a profile of the available toxicological information and its relevance to human exposure  11  Site Assessment and Human Health Vapor Risk Assessment Report  Otay Ranch Village 3, Heritage Road, Chula Vista, CA  August 17, 2017    under conditions present at in the environment. This process has been completed by either the USEPA or  Office of Environmental Health Hazard Assessment (OEHHA) at CalEPA for all of the selected COPCs in soil  vapor.    Dose‐response assessment entails quantifying the relationship between the dose of a chemical and the  incidence of adverse effects in the exposed population. The result of the dose‐response assessment is  toxicity  criteria  that  are  used  in  the  risk  characterization  to  estimate  the  likelihood  of  adverse  effects  occurring in humans at different exposure levels. The toxicity criteria used to evaluate noncarcinogenic  health risks are commonly referred to as reference concentrations (RfCs) for inhalation exposures. For  carcinogenic health risks, the toxicity criteria used to estimate risk are inhalation unit risk factors (IURs)  for inhalation exposures. The basis for these criteria is described briefly in the following sections.    Toxicological values and information regarding the potential for carcinogens and noncarcinogens to cause  adverse  health  effects  in  humans  were  obtained  from  a  hierarchy  of  California  and  USEPA  sources,  beginning  with  the  OEHHA  online  Toxicity  Criteria  Database  (OEHHA, 2017)  and  Integrated  Risk  Information  System  (IRIS)  online  database  (USEPA,  2017b).  OEHHA  and  IRIS  provide  chemical‐specific  toxicity  data  that  represent  CalEPA  and  the  USEPA’s  consensus.  The  quantitative  toxicity  values  and  supporting explanations in IRIS have been reviewed and agreed upon by the USEPA using available studies  on a chemical.     6.3.1  Noncarcinogenic Health Effects    For  the  evaluation  of  noncarcinogens  in  the  risk  assessment,  reference  concentrations  (RfCs)  for  the  inhalation route are used. The RfC is expressed in micrograms per cubic meter (µg/m3) and is an estimate  of the maximum air concentration that can be present over a specified time period without an appreciable  risk of deleterious effects. Chronic reference concentrations are generally used to evaluate the potential  noncarcinogenic  effects  associated  with  exposure  periods  between  six  years  and  a  lifetime.  Noncarcinogenic toxicity criteria for the COPCs are presented in Appendix D, Table 6 through 8.     For noncarcinogens, toxicity criteria were selected according to the following hierarchy of sources:   The  more  conservative  of  OEHHA’s  chronic  reference  exposure  levels  (RELs)  or  RfCs  from  IRIS  (USEPA, 2017b). RELs may be obtained from the OEHHA Toxicity Criteria Database (OEHHA, 2017).    USEPA’s Provisional Peer Reviewed Toxicity Values (PPRTVs), as provided for specific chemicals in  the USEPA, Regional Screening Level Table (USEPA, 2017a); and   Other toxicity values, as provided for specific chemicals in the USEPA Regional Screening Level  Table (USEPA, 2017a). Other sources referenced in the USEPA tables include Minimal Risk Levels  (MRLs) from the Agency for Toxic Substances Disease Registry (ATSDR) and values from USEPA  Health Effects Assessment Summary Tables (HEAST).   6.3.2  Carcinogenic Health Effects    In  a  risk  assessment,  a  slope  factor  is  used  to  estimate  an  upper‐bound  probability  of  an  individual  developing  cancer  as  a  result  of  a  lifetime  of  exposure  to  a  particular  level  of  a  potential  carcinogen.  Specifically, a slope factor is a plausible upper‐bound estimate of the probability of a response per unit  12  Site Assessment and Human Health Vapor Risk Assessment Report  Otay Ranch Village 3, Heritage Road, Chula Vista, CA  August 17, 2017    intake of a chemical over a lifetime and is usually the 95 percent upper confidence limit (UCL) of the slope  of the dose‐response curve expressed in (μg/m3)–1 for inhalation pathways.     For carcinogens, toxicity criteria were selected from the OEHHA Toxicity Criteria Database or USEPA IRIS,  if no OEHHA criteria are available.  Carcinogenic toxicity criteria for all COPCs are presented in Appendix  D, Tables 7 and 8.    6.4  RISK CHARACTERIZATION    For risk characterization, toxicity and exposure assessments were integrated into quantitative expressions  of  noncarcinogenic  hazards  and  carcinogenic  risks  and  an  uncertainty  analysis,  which  is  a  qualitative  evaluation.     6.4.1  Noncarcinogenic Health Effects    Potential noncarcinogenic  effects were  evaluated by comparing  exposure over a specified  time period  with  an  RfC  derived  for  a  chronic  exposure.    An  HI  or  hazard  quotient  (HQ)  (for  effects  which  are  not  additive) of less than or equal to 1 (referred to herein as the significance threshold) indicates acceptable  levels  of  exposure  for  COPCs  having  an  additive  effect.  In  this  Vapor  HHRA,  a  screening‐level  HI  was  calculated by summing the HQs for all COPCs, regardless of toxic endpoint, as recommended by agency  guidance  (USEPA,  1989).  This  approach  is  generally  believed  to  overestimate  the  potential  for  noncarcinogenic health effects due to simultaneous exposure to multiple chemicals because it does not  account for different toxic endpoints (USEPA, 1989). However, it can be used as a tool to rapidly identify  those exposure scenarios for which exposure to multiple COPCs does not pose a noncarcinogenic health  risk.     It should be noted that HQs or HIs greater than 1 do not necessarily mean that adverse health effects will  be observed. As discussed in Section 6.3, a substantial margin of safety has been incorporated into some  of the RfCs developed for the COPCs. Therefore, for these chemicals, adverse health effects may not be  observed even if the HQ or HI is much larger than 1. In addition, HIs are conservatively summed across all  COPC, regardless of the toxic endpoint, which would overestimate non‐cancer risk. Non‐cancer hazards  estimated for the inhalation pathway for VOCs in indoor air for each location are presented on a sample‐ by‐sample  basis  in  Appendix  D,  Table  6  and  for  ambient  air  based  on  the  maximum  ambient  air  concentration in Appendix D, Table 8.    The  estimates of noncarinogenic hazards for individual COPCs to potential indoor and ambient air are  presented in Section 7.4.1.    6.4.2  Carcinogenic Health Effects    Carcinogenic risks are estimated as the incremental probability of an individual developing cancer over a  lifetime as a result of exposure to a potential carcinogen. The IUR converts estimated daily ECs averaged  over  a  lifetime  of  exposure  to  incremental  risk  of  an  individual  developing  cancer  (USEPA,  1989).  This  carcinogenic risk estimate is generally an upper‐bound value since the IUR is often a 95 percent UCL of  probability of response based on experimental animal data.     13  Site Assessment and Human Health Vapor Risk Assessment Report  Otay Ranch Village 3, Heritage Road, Chula Vista, CA  August 17, 2017    The USEPA and CalEPA have defined what is considered to be an acceptable level of risk in similar, though  slightly different, ways. The USEPA considers one in one‐million (1×10‐6) to one in ten thousand (1×10–4)  to be the target range for acceptable risk (USEPA, 1990a & 1990b). Estimates of lifetime excess cancer risk  associated with exposure to chemicals of less than 1×10‐6 are considered de minimis, a risk level that is so  low as to not warrant any further investigation or analysis (USEPA, 1990a). Within the state of California,  CalEPA also generally targets the same range for acceptable risks.     It should be noted that cancer risks in the 1×10‐6 to 1×10‐4 range or higher do not necessarily mean that  adverse health effects will be observed. Current methodology for estimating the carcinogenic potential of  chemicals could overestimate the true risk by a considerable degree. Theoretical lifetime excess cancer  risks estimated for the inhalation pathway for VOCs in indoor air for each location are presented on a  sample‐by‐sample basis in Appendix D, Table 7 and for ambient air based on the maximum ambient air  concentration in Appendix D, Table 8.    The estimates of cancer risks for individual COPCs to potential indoor and ambient air are presented in  Section 7.4.2.     7.0  FINDINGS   In June and July 2017, TRC conducted site assessment activities at the Site that included the drilling of 40  borings, the installation of 78 soil gas probes and the collection of 99 soil gas samples, including replicates  (Figure 2).  Below are the soil gas sampling results using the handheld detector, Tedlar bag samples and  mobile laboratory.    7.1  HANDHELD DETECTOR AND PRESSURE GAUGE RESULTS    Handheld  detectors  were  used  to  measure  methane  concentrations  from  select  soil  gas  probes.    Two  sampling events were conducted during separate mobilizations.  Calibration reports for each handheld  detector are included in Appendix B.     The first handheld detector sampling event, collected on the June 7, 2017 and June 8, 2017, measured the  percentage  of  methane  relative  to  methane’s  LEL  of  50,000  parts  per  millions  by  volume  (ppmv).  For  example, if the reading was 50% of the LEL than a methane ppmv concentration would be approximately  25,000  ppmv.    TRC  was  informed  by  our  subcontractor,  EST,  that  the  LEL  handheld  detector  only  quantified methane percentages up to 100% of the LEL, so the actual percentage present could be at or  above 100% of the LEL when reported as 100% LEL.  Also, during this mobilization, multiple readings were  collected at each selected soil gas probe depth.      The  second  handheld  detector  sampling  event,  collected  on  the  June  26,  2017  through  June  28,  2017  mobilization,  measured  methane  in  ppmv.    During  this  event,  a  no  purge  and  post  purge  sample  was  collected.    Based  on  TRC’s  research  and  in  conversations  with  methane  experts,  there  is  no  specific  guidance that shows evidence for collecting a no purge sample versus post purge sample when evaluating  methane results. Therefore, to be conservative, TRC collected a no purge and post purge sample from  selected probes during this sampling event.  It is TRC’s opinion that a no purge sample represents methane  that has accumulated in the soil gas probe. However, the no purge sample may not be representative of  the soil gas surrounding the probe.  The post purge sample consisted of taking three purge volumes in  14  Site Assessment and Human Health Vapor Risk Assessment Report  Otay Ranch Village 3, Heritage Road, Chula Vista, CA  August 17, 2017    accordance with current DTSC Advisory – Active Soil Gas Investigations, July 2015 (DTSC, 2015).  This soil  gas sample represents conditions in soil immediately surrounding the sampling probe and will also reduce  the potential of short‐circuiting (i.e., the intrusion of surface air into the sample via channeling down the  probe tube) the sampling system when compared to purge volumes greater than three.      The range of results are discussed below:     June 7, 2017 and June 8, 2017 Mobilization:   o The methane percentages ranged from 6% LEL (SGP‐01‐10) to 100% LEL.  Multiple soil gas  probes had the detection of 100% LEL (Table 2).    o Pressure was not detected in the probes.  A total of 40 measurements were conducted;     June 26, 2017 through June 28, 2017:    o Methane concentrations ranged from 0 ppmv to 37,000 ppmv (SGP‐07‐5) (Table 3).   o Pressure was not detected in the probes. A total of 78 measurements were conducted.     7.2  TEDLAR BAG SAMPLING RESULTS    Based on the methane concentrations detected during the first two sampling events discussed above, on  June 15, 2017, TRC collected Tedlar bag samples from soil gas probes SGP‐02, SGP‐06, SGP‐09 and SGP‐10  to confirm the hand held detector results.  A no purge (NP) and post purge sample was also collected from  soil gas probes SGP‐02‐5 and SGP‐06‐5. The results are below and included in Table 4 and Appendix C:    Methane (ppmv)  Sample ID  SGP‐02‐5 NP  32  SGP‐02‐5  100  SGP‐02‐30  26  SGP‐06‐5 NP  690  SGP‐06‐5  310  SGP‐09‐5  ND<13  SGP‐10‐5  ND<7.5  NP= no purge  PPMV = parts per million by volume   7.3  MOBILE LABORATORY SAMPLING RESULTS  As stated in Section 5.1.3, mobile laboratory sampling was conducted on four separate mobilizations.  On  June 7, 2017 and June 8, 2017 and June 26, 2017 through June 28, 2017, EST’s mobile laboratory analyzed  for VOCs.  From July 12, 2017 through July 14, 2017, H&P Geochemistry’s mobile laboratory analyzed for  methane and on July 17, 2017 and July 18, 2017, H&P Geochemistry’s mobile laboratory analyzed for VOCs  and methane.      Below are the mobile laboratory analytical results for methane and VOCs.   15  Site Assessment and Human Health Vapor Risk Assessment Report  Otay Ranch Village 3, Heritage Road, Chula Vista, CA  August 17, 2017    7.3.1  Methane Results in Soil Vapor  Below is a table that shows the range of methane concentrations detected a 5 fbg and deeper than 5 fbg  (Table 4; Figures 6 and 7; Appendix C).    Approximate  Depth  Range of Detected Concentrations in  ppmv  No Purge Samples  Post Purge Samples  5 Fbg  10  to  38,000  18  to  6,300  Deeper than 5 fbg  12  to  10  to  17,000  31,000  Notes: ppmv = parts per million by volume              fbg =  feet below grade  7.3.2  VOC Results in Soil Vapor    Below is a table that shows the range of COPC concentrations detected in soil vapor (Table 5; Appendix  C).      Detected VOCs  Range of Detected  Concentrations in µg/m3  1,1‐Dichloroethane*  40  to  110  1,2,4‐Trimethylbenzene  10J  to  1,800  1,3,5‐Trimethylbenzene  10J  to  880  Benzene  Bromodichloromethane  10J  to  330  20  to  290  Carbon disulfide  40  to  170  Chloroform  10J  to  430  20  cis‐1,2‐Dichloroethene*  Dibromochloromethane  70J  to  190  130  Dichlorodifluoromethane*  Ethylbenzene  10J  to  1,400  Isopropylbenzene  10J  to  140  meta‐ and para‐Xylenes  20  to  5,500  Naphthalene  20  to  50  n‐Butylbenzene  10J  to  40  n‐Propylbenzene  10J  to  410  ortho‐Xylene  20  to  1,700  p‐Isopropyltoluene  10J  to  80  sec‐Butylbenzene  10J  to  30  Styrene*  10J  to  50  16  Site Assessment and Human Health Vapor Risk Assessment Report  Otay Ranch Village 3, Heritage Road, Chula Vista, CA  August 17, 2017    Detected VOCs  Range of Detected  Concentrations in µg/m3  PCE  10J  to  260  Toluene  10J  to  3,000  TCE*  10J  to  50  Trichlorofluoromethane  10J  to  20  Notes:  TCE = Trichloroethene PCE = Tetrachloroethene    µg/m3 = micrograms per meters cubed  J =analyte detected at a concentration  below the laboratory Reporting Limit;  therefore, the result is an estimated  concentration.    * Analyte detected at the Site, but not in  the residential or commercial areas.    These COPCs were used for the Vapor HHRA and the results are discussed in Section 7.4 below.    7.4  HUMAN HEALTH VAPOR RISK ASSESSMENT RESULTS    A Vapor Risk HHRA was conducted using the COPCs detected in soil vapor collected in June and July 2017.   As previously stated, residential and commercial receptors could be exposed to VOCs that may infiltrate  the indoor environment from the subsurface. Analytical results from soil vapor were used to estimate the  volatilization from the subsurface to indoor air in this HHRA using the attenuation factors calculated using  the  J&E  model  (1991),  made  available  in  spreadsheet  format  by  the  USEPA  (2004)  and  adopted  and  republished  by  the  DTSC  (updated  December  2014).    In  this  HHRA,  toxicity  and  exposure  assessments  were integrated into quantitative expressions of noncarcinogenic hazards and carcinogenic risks and an  uncertainty analysis, which is a qualitative evaluation.      7.4.1  Noncarcinogenic Health Effects    Potential noncarcinogenic  effects were  evaluated by comparing  exposure over a specified  time period  with an RfC derived for a chronic exposure.  A HI or HQ (for effects which are not additive) of less than or  equal to 1 (referred to herein as the significance threshold) indicates acceptable levels of exposure for  COPCs having an additive effect. In this HHRA, a screening‐level HI was calculated by summing the HQs  for all COPCs, regardless of toxic endpoint, as recommended by agency guidance (USEPA, 1989).    Non‐cancer  hazards  estimated  for  the  inhalation  pathway  for  VOCs  in  indoor  air  for  each  location  are  presented on a sample‐by‐sample basis in Appendix D, Table 6 and for ambient air (outside air) based on  the maximum ambient air concentration in Appendix D, Table 8.  Refer to Figure 8 non‐cancer hazard  results at each soil gas probe location.    Residential  The non‐cancer HI for the residential receptor exposed to the COPCs in soil vapor range from 0.00002 to  0.02,  and  in  soil  vapor  volatilizing  to  the  ambient  air  is  0.0003.  The  maximum  cumulative  HI  for  the  residential receptor is less than the significant threshold and does not pose a hazard to human health.  17  Site Assessment and Human Health Vapor Risk Assessment Report  Otay Ranch Village 3, Heritage Road, Chula Vista, CA  August 17, 2017    Commercial Worker  The non‐cancer HI for the commercial worker exposed to the COPCs in soil vapor range from 0.0002 to  0.0008, and in soil vapor volatilizing to the ambient air is 0.00002. The maximum cumulative HI for the  commercial worker is less than the significant threshold and does not pose a hazard to human health.    7.4.2  Carcinogenic Health Effects    Carcinogenic risks are estimated as the incremental probability of an individual developing cancer over a  lifetime as a result of exposure to a potential carcinogen.    The USEPA and CalEPA have defined what is considered to be an acceptable level of risk in similar, though  slightly different, ways. The USEPA considers 1×10‐6 to 1×10–4 to be the target range for acceptable risk  (USEPA, 1990a, 1990b). Estimates of lifetime excess cancer risk associated with exposure to chemicals of  less  than  1×10‐6  are  considered  de  minimis,  a  risk  level  that  is  so  low  as  to  not  warrant  any  further  investigation or analysis (USEPA, 1990a). Within the state of California, CalEPA also generally targets the  same range for acceptable risks.     Theoretical lifetime excess cancer risks estimated for the inhalation pathway for VOCs in indoor air for  each location are presented on a sample‐by‐sample basis in Appendix D, Table 7 and for ambient air based  on the maximum ambient air concentration in Appendix D, Table 8. Refer to Figure 8 theoretical lifetime  excess cancer risks results at each soil gas probe location.    Residential  The  upper‐bound  cumulative  lifetime  incremental  cancer  risks  for  residential  receptor  exposed  to  the  COPCs  in  soil  vapor  volatilizing  to  indoor  air  range  from  2.5×10‐9  to  2.4×10‐6.  The  cumulative  lifetime  incremental  cancer risk for the residential receptor is greater than 1.0x10‐6. The  maximum cumulative  lifetime incremental cancer risk for the residential receptor is associated with the sample collected from  SGP‐324 at 5 fbg.  The cumulative lifetime cancer risk estimated based on data from this probe is primarily  attributed  to  the  presence  of  chloroform,  and  secondarily  to  the  presence  of  bromodichloromethane,  dibromochloromethane, benzene and ethylbenzene.  This is the only sample location with a cumulative  lifetime incremental cancer risk greater than 1.0x10‐6.     The  upper‐bound  cumulative  lifetime  incremental  cancer  risks  for  residential  receptor  exposed  to  the  COPCs  in  soil  vapor  volatilizing  to  ambient  air  is  3.1x10‐8,  which  is  less  than  1.0x10‐6  and  considered  insignificant.    Commercial Worker  The upper‐bound cumulative lifetime incremental cancer risks for the commercial worker exposed to the  COPCs in soil vapor volatilizing to indoor air range from 3.8×10‐9 to 2.6×10‐8, and in soil vapor volatilizing  to the ambient air is 7.2×10‐10. The cumulative lifetime incremental cancer risks for the commercial worker  are less than 1.0x10‐6, which were considered insignificant.    7.4.3  Uncertainties    There  is  a  certain  degree  of  uncertainty  in  estimating  exposures  to  chemicals  in  the  environment.  To  account  for  these  uncertainties,  the  risk  assessment  methodology  was  designed  to  be  conservative.   18  Site Assessment and Human Health Vapor Risk Assessment Report  Otay Ranch Village 3, Heritage Road, Chula Vista, CA  August 17, 2017    Where values are uncertain because of a lack of site‐specific data, regulatory agency default values and/or  conservative values were used.  Refer to the HHRA text in Appendix D for a complete list of uncertainties.     8.0  DISCUSSION OF FINDINGS    The following is a discussion of the findings:    8.1  METHANE RESULTS    Methane concentrations ranged from 6% of the LEL to over 100% of the LEL and from not detected to  37,500  ppmv  using  handheld  detectors,  and  from  not  detected  above  laboratory  detection  limits  to  38,000 ppmv using stationary and mobile laboratories.  For the discussion herein, TRC will rely primarily  on the stationary and mobile laboratory data (Table 4) because it is considered more accurate than the  hand held field instrumentation.      TRC  is  not  familiar  with  any  existing  ordinances  in  the  City  of  Chula  Vista  regarding  action  levels  for  methane.  Therefore, TRC reviewed DEH guidance in the SAM Manual and DTSC guidance in an Advisory  on  Methane  Assessment  and  Common  Remedies  at  School  Sites  with  the  following  findings  regarding  potentially relevant action level:      1,000 ppmv: The DEH considers concentrations greater than 1,000 ppmv to be significant and the  DTSC considers it to warrant further investigation (DEH, 2011; and DTSC, 2005); and    5,000 ppmv: DEH is concerned at concentrations exceeding 10% of the LEL (5,000 ppmv) and DTSC  expects a response action.  DTSC provides the example of a “removal action” as an appropriate  response  action.    Since  the  source  of  the  methane  is  unknown  and  cannot  be  removed,  TRC  interprets the appropriate action to be the implementation of mitigation measures at methane  concentrations of 5,000 ppmv or greater;   2.8‐inches of water pressure: The primary mechanisms for methane migration in the subsurface  are pressure driven flow and diffusion. DTSC recommends further investigation at pressures equal  to or greater than 2.8‐inches of water (DTSC, 2005); and   13.9‐inches  of  water  pressure:  DTSC  recommends  a  response  action  at  pressures  equal  to  or  greater than 13.9‐inches of water.  As previously stated, TRC interprets a response action in this  case to be implementation of mitigation measures (DTSC, 2005).    Comparison of Figures 5 and 6 show that methane is, in general, more prevalent at depths greater than  approximately 5 fbg.  At 5 fbg, methane is concentrated north of Heritage Road in the area of Lot 815, and  in  the  central  and  north  eastern  portions  of  the  residential  lots  (Figure  5).  The  deeper  methane  concentrations are present over most of the area south and east of Heritage Road, north of Main Street  and  west  of  Avenida  Escaya.    Normally,  the  shallow  data  is  most  relevant  to  assessing  the  need  for  mitigation  measures.    However,  the  age  of  the  fill  material  at  the  Site  must  also  be  taken  into  consideration.  It is TRC’s understanding that the fill material ranges in age from approximately 6 months  to 12 months and is as deep as approximately 115 feet.  It is unknown if the methane concentrations have  equilibrated to their long term concentrations at the various depths tested.  In addition, there is ongoing  development  at  the  Site  which  requires  decisions  to  be  made  now  regarding  the  need  for  mitigation  measures.  Given these conditions and circumstances, both the approximately 5 fbg and deeper methane  results should be considered for assessing the lateral extent and potential need for methane mitigation  19  Site Assessment and Human Health Vapor Risk Assessment Report  Otay Ranch Village 3, Heritage Road, Chula Vista, CA  August 17, 2017    measures.  Further, the lower threshold concentration of 1,000 ppmv methane should be used to guide  the mitigation measures.  Based on these data, methane mitigation measures are warranted for all Otay  Ranch Village 3 structures located west of Avenida Escaya.        Although  the  actual  sample  data  on  Lots  816  through  818  do  not  indicate  the  presence  of  significant  methane, these lots are immediately adjacent to the Otay Landfill.  The landfill is a potential source of  methane in soil gas.  Based on the proximity of the landfill to these lots, methane mitigation measures are  also warranted for all structures on commercial Lots 816 through 818.      With the implementation  of appropriately designed  mitigation measures the  potential  physical hazard  from methane in the subsurface soil gas is considered insignificant for the occupants of structures located  in the impacted areas.  Therefore, TRC recommends consultation with a California licensed Professional  Engineer  with  expertise  in  methane  mitigation  to  appropriately  design  and  implement  mitigation  measures.      Soil gas probe SGP‐223 had a reported methane concentration of 150 ppmv.  Although this concentration  is  below  the  assessment  threshold  of  1,000  ppmv,  it  is  in  close  proximity  to  the  estimated  extent  of  methane at 1,000 ppmv.  Based on these data, additional assessment is warranted east of soil gas probe  SGP‐223 to assess the lateral extent of methane concentrations in soil gas.      During  the  June  7,  8,  and  26  through  28,  2017  sampling  events,  a  total  of  118  probe  pressure  measurements were  conducted and pressure was  not detected in any of the  probes.   Based on  these  results, methane does not appear to be under pressure.  After the June 28, 2017 sampling event, pressure  readings  were  no  longer  conducted  because  the  existing  data  indicated  the  soil  gas  was  not  under  measureable pressure.      DEH  has  developed  guidelines  for  assessing  the  significance  of  hazardous  materials  and  existing  contamination for land use planning.  DEH states that proposed structure(s) for human occupancy and/or  significant  linear  excavation  within  1,000  feet  of  an  open,  abandoned,  or  closed  landfill  (excluding  burnsites) could create a significant hazard to the public or the environment. Hazards near landfills include  potential gas migration into structures and migration of landfill gas via subsurface utilities that act as a  conduit for landfill gas (DPLU, 2007).  Based on this guidance, additional methane assessment is warranted  in other areas of planned development within 1,000 feet of buried waste on the Otay Landfill.  In addition,  TRC recommends consultation with a California licensed Professional Engineer with expertise in methane  mitigation  to  appropriately  design  and  implement  mitigation  measures  for  unoccupied  structures,  including  subsurface  utilities  that  could  potentially  accumulate  methane  gas  and  act  as  a  conduit  for  methane gas.            8.2  HUMAN HEALTH VAPOR RISK RESULTS    TRC evaluated human health vapor risk to future residential and commercial receptors at the Site and the  results indicated the noncancer hazard and upper‐bound cumulative lifetime incremental cancer risk were  considered  insignificant  with  the  exception  of  soil  gas  probe  SGP‐324.    Soil  gas  probe  SGP‐324  had  a  potential cumulative lifetime incremental cancer risk of 2.4×10‐6 for a residential receptor which is greater  than  cumulative  lifetime  incremental  cancer  risk  threshold  of  1.0x10‐6.    Based  on  this  information,  mitigation measures should be implemented for this residential lot and surrounding residential lots.    20  Site Assessment and Human Health Vapor Risk Assessment Report  Otay Ranch Village 3, Heritage Road, Chula Vista, CA  August 17, 2017      With the implementation of appropriately designed mitigation measures, infiltration of VOCs into indoor  air  from  the  soil  gas  exposure  pathway  at  soil  gas  probe  SGP‐324  and  surrounding  lots  is  no  longer  considered to be a complete pathway and the potential risk to human health from VOCs in the subsurface  soil gas is considered insignificant.  TRC recommends consultation with a California licensed Professional  Engineer with expertise in VOC mitigation to appropriately design and implement mitigation measures.    Each probe was only sampled once for VOCs, therefore the variations in VOC concentrations in soil gas  over time are unknown.  In addition, the source of the VOCs is unknown.  As discussed in Section 8.1, the  age of the fill material at the Site must also be taken into consideration.  It is TRC’s understanding that the  fill material ranges in age from approximately 6 months to 12 months and is as deep as approximately 115  feet.  It is unknown if the VOCs concentrations have equilibrated to their long term concentrations.  There  is also ongoing development at the Site which requires decisions to be made now regarding the need for  mitigation measures. Given these conditions, it is appropriate to implement VOC mitigation measures for  all residential and commercial structures undergoing methane mitigation, which includes all residential  structures located west of Avenida Escaya and commercial structures on Lots 816 through 818.         Regarding the lateral assessment of VOCs in soil gas, additional soil gas assessment is needed east of soil  gas probe SGP‐324 since this soil gas probe is the most easterly probe installed and sampled at the Site.   Additional assessment approximately 300 feet to the east of soil gas probe SGP‐324 is recommended to  assess the eastern extent of potential VOCs impacts in soil gas.     Further, the Otay Landfill could also be a source of VOCs in soil gas given that there is a closed Class I  landfill and an active Class II landfill on the property.  Based on the prevalence of VOCs in soil gas and the  proximity of the landfill, additional VOC assessment is warranted in other areas of planned development  within 1,000 feet of buried waste on the Otay Landfill.           9.0  CONCLUSIONS AND RECOMMENDATIONS    Based on the findings of this investigation, TRC concludes the following:   Detectable methane is present in soil gas at concentrations ranging from 10 to 38,000 ppmv using  USEPA Method 8015B;    Methane and soil gas in general does not appear to be under pressure;    Methane mitigation measures are warranted for all structures located west of Avenida Escaya and  on commercial lots 816 through 818;    VOCs 1,2,4‐trimethylbenzene, 1,3,5‐trimethylbenzene, benzene, bromodichloromethane, carbon  disulfide, chloroform, dibromochloromethane, ethylbenzene, isopropylbenzene, meta‐ and para‐ xylenes, naphthalene, n‐butylbenzene, n‐propylbenzene, ortho‐xylene, p‐isopropyltoluene, sec‐ butylbenzene,  PCE,  toluene,  and  trichlorofluoromethane  were  detected  in  soil  gas  beneath  residential and commercial lots and were identified as COPCs to be include in the Vapor HHRA;   The non‐carcinogenic HI for a residential receptor exposed to the COPCs in soil vapor range from  0.00002 to 0.02, and in soil vapor volatilizing to the ambient air is 0.0003. These values are less  than the acceptable HI of 1.0.  Based on these results, the potential risk of non‐carcinogenic health  effects to residential receptors from subsurface vapors is considered insignificant;  21  Site Assessment and Human Health Vapor Risk Assessment Report  Otay Ranch Village 3, Heritage Road, Chula Vista, CA  August 17, 2017     The non‐carcinogenic HI for a commercial worker exposed to the COPCs in soil vapor range from  0.0002 to 0.0008, and in soil vapor volatilizing to the ambient air is 0.00002.  These values are less  than the acceptable HI of 1.0.  Based on these results, the potential risk of non‐carcinogenic health  effects to commercial worker from subsurface vapors is considered insignificant;   The upper‐bound cumulative lifetime incremental cancer risks for residential receptor exposed to  the  COPCs  in  soil  vapor  volatilizing  to  indoor  air  at  soil  gas  probe  SGP‐324  is  2.4  x  10‐6.  The  cumulative lifetime incremental cancer risk for the residential receptor is greater than 1.0x10‐6;   Excluding soil gas probe SGP‐324, the upper‐bound cumulative lifetime incremental cancer risks  for a residential receptor exposed to the COPCs in soil vapor volatilizing to indoor air range from  2.5×10‐9  to  4.3×10‐7.  The  cumulative  lifetime  incremental  cancer  risks  for  these  residential  receptors are less than 1.0x10‐6, which is considered insignificant;   The upper‐bound cumulative lifetime incremental cancer risks for residential receptor exposed to  the  COPCs  in  soil  vapor  volatilizing  to  the  ambient  air  is  3.1x10‐8.  The  cumulative  lifetime  incremental cancer risks for these residential receptors are less than 1.0x10‐6, which is considered  insignificant;   The  upper‐bound  cumulative  lifetime  incremental  cancer  risks  for  the  commercial  worker  exposed to the COPCs in soil vapor volatilizing to indoor air range from 3.8×10‐9 to 2.6×10‐8, and  in soil vapor volatilizing to the ambient air is 7.2×10‐10.  The cumulative lifetime incremental cancer  risks for the commercial worker are less than 1.0x10‐6, which is considered insignificant;    Due to unknowns regarding soil gas VOC concentrations over time and the source of the VOCs, it  is  appropriate  to  implement  VOC  mitigation  measures  for  all  residential  and  commercial  structures undergoing methane mitigation, which includes all residential structures located west  of Avenida Escaya and commercial structures on Lots 816 through 818;        With the implementation of mitigation measures appropriately designed by a California licensed  Professional  Engineer  with  expertise  in  methane  and  VOC  mitigation,  the  potential  physical  hazard from methane and the potential risk to human health from VOCs in the subsurface soil gas  is considered insignificant for the occupants of residential and commercial structures located in  the impacted areas.     Additional assessment is warranted east of soil gas probes SGP‐324 and SGP‐223, to assess the  lateral extent of VOCs and methane concentrations, respectively; and    Additional methane and VOC assessment is warranted in other areas of planned development  within 1,000 feet of buried waste on the Otay Landfill.    Based on these conclusions, TRC recommends the following:   Implement methane and VOC mitigation measures for all residential and commercial structures  located west of Avenida Escaya and on Lots 816 through 818;       Consult  with  a  methane  and  VOC  mitigation  expert  to  appropriately  design  and  implement  mitigation measures.  The design should be approved by a licensed Professional Engineer in the  State of California.      Consult with a California licensed Professional Engineer with expertise in methane mitigation to  appropriately  design  and  implement  mitigation  measures  for  unoccupied  structures,  including  22  Site Assessment and Human Health Vapor Risk Assessment Report  Otay Ranch Village 3, Heritage Road, Chula Vista, CA  August 17, 2017    subsurface  utilities  that  could  potentially  accumulate  methane  gas  and  act  as  a  conduit  for  methane gas.      Install additional soil gas probes approximately 300 feet to the east of soil gas probe SGP‐324 and  SGP‐223 to assess if there are potential methane and VOCs impacts in soil vapor;    Assess methane and VOCs in soil gas in other areas of planned development within 1,000 feet of  buried waste on the Otay Landfill; and   Continue with the site assessment process in accordance with Section 4.II of the DEH SAM Manual  which includes:  o o o o o o Characterize the types of contaminants COPCs present at the Site;  Develop a comprehensive understanding of site geology and hydrogeology;  Delineate  the  extent  and  distribution  of  COPCs  within  the  subsurface  environment,  including soil, groundwater and soil gas;  Characterizing the actual and potential migration paths of the subsurface COPCs;  Identify the sources of COPCs; and  Continue  to  identify  and  assess  the  potential  adverse  effects  to  public  health  and  the  environment, if necessary.    10.0  LIMITATIONS    The activities summarized in this report have been performed in accordance with current practice and the  standard of care exercised by geologists and engineers performing similar tasks in the area. No warranty,  express  or  implied,  is  made  regarding  the  conclusions,  recommendations,  and  professional  opinions  presented in this report.  The conclusions and recommendations are based solely upon analysis of the  observed conditions.  If actual conditions differ from those described in this report, our office should be  notified and additional recommendations, if required, will be provided.    11.0  REFERENCES    CRWQCB, 2011.  Water Quality Control Plan for the San Diego Basin, CRWQCB, September 8, 1994,  revised April 4, 2011.  Department of Environmental Health (DEH), County of San Diego, 2011, Site Assessment and Mitigation  Manual Revised, August 15.  Department of Planning and Land Use (DPLU), County of San Diego, 2007, Guidelines for Determining  Significance, Hazardous Materials and Existing Contamination, dated July 30, 2007.  Department of Toxic Substances Control (DTSC), 2005, Advisory on Methane Assessment and Common  Remedies at School Sites, June 16.  (DTSC, 2011, Guidance for the Evaluation and Mitigation of Subsurface Vapor Intrusion to Indoor Air  (Vapor Intrusion Guidance), Final, October.  23  Site Assessment and Human Health Vapor Risk Assessment Report  Otay Ranch Village 3, Heritage Road, Chula Vista, CA  August 17, 2017    DTSC, 2014, Recommended DTSC Default Exposure Factors for Use in Risk Assessment at California  Hazardous Waste Sites and Permitted Facilities, Office of Human and Ecological Risk (HERO), HERO  Human Health Risk Assessment (HHRA) Note Number: 1, Issue Date: September 30, 2014.  DTSC, 2015, Advisory Active Soil Gas Investigations, July  GEOCON Incorporated, 2016, Update Geotechnical Investigation, Otay Ranch Village 3 North and Village  4 Park Site, Chula Vista, CA, April 21   Office of Environmental Health Hazard Assessment (OEHHA), 2017, Toxicity Criteria Database, online.  http://www.oehha.ca.gov/risk/chemicalDB/index.asp. Accessed July.   United States Environmental Protection Agency (USEPA), 1989, Risk Assessment Guidance for  Superfund, Volume I: Human Health Evaluation Manual (Part A), December.  USEPA, 1990a, Corrective Action for Solid Waste Management Units at Hazardous Waste Management  Facilities, Proposed Rule: Federal Register, v. 55, p. 3078.  USEPA, 1990b, National Oil and Hazardous Substances Pollution Contingency Plan: Federal Register, v.  55, p. 8666.  USEPA, 2002, Supplemental Guidance for Developing Soil Screening for Superfund Sites, Office of Solid  Waste and Emergency Response, Washington, D.C., OSWER 9355.4‐24, December.  USEPA, 2004, User’s Guide for Evaluating Subsurface Vapor Intrusion Into Buildings, Office of Emergency  and Remedial Response, February 22.  USEPA, 2005, Guidelines for Carcinogen Risk Assessment, Final, EPA/630/R‐03/001F, March.  USEPA, 2009, Risk Assessment Guidance for Superfund: Volume I—Human Health Evaluation Manual  (Part F, Supplemental Guidance for Inhalation Risk Assessment), January 28.  USEPA, 2017a, Regional Screening Levels for Chemical Contaminants at Superfund Sites,  http://www.epa.gov/reg3hwmd/risk/human/rb‐concentration_table/index.htm, June.  USEPA, 2017b, Integrated Risk Information System (IRIS), online database,  http://www.epa.gov/IRIS/subst/index.html. Accessed July.  United States Geological Survey (USGS), 1975a, Imperial Beach, California 7½ Minute Quadrangle, Scale  1:24,000, 1967, Photo‐revised 1975.    USGS, 1975b, Otay Mesa, California 7½ Minute Quadrangle, Scale 1:24,000, 1967, Photo‐revised 1975.  24  Site Assessment and Human Health Vapor Risk Assessment Report  Otay Ranch Village 3, Heritage Road, Chula Vista, CA  August 17, 2017                    FIGURES    This page intentionally left blank SITE ENERGY WAY MAIN S ITAG OAD ER 8.5x11 --- ATTACHED XREF'S: --- ATTACHED IMAGES: Homefed-Otay_Aerial-vm; HER DRAWING NAME: L:\Graphics\ProjectsbyName\HomeFed Otay\280845\ Otay_Village_III_VM.dwg --- PLOT DATE: August 08, 2017 - 3:09PM --- LAYOUT: 8.5x11 TREET SOURCE: Google Earth Professional, February 2016. PROJECT: OTAY RANCH VILLAGE 3 CHULA VISTA, CALIFORNIA TITLE: SITE VICINITY MAP R.Collins 278938.1000 B. Kettmann B. Kettmann FIGURE 1 August 2017 0 1,000 2,000 SCALE IN FEET Otay_Village_III_VM.dwg Version: 2017-03-03 This page intentionally left blank DRAWING NAME: L:\Graphics\ProjectsbyName\HomeFed Otay\280845\ Otay_Village_III_SGP_2017 08.dwg --- PLOT DATE: August 08, 2017 - 3:52PM --- LAYOUT: SITE PLAN-11x17L 11x17 --- ATTACHED XREF'S: --- ATTACHED IMAGES: Homefed-Otay_Aerial; DRAFT: Preliminary and under development 0 300 600 SCALE IN FEET NOTES: All dimensions and locations are approximate. Modified from a map provided by Google Earth Professional, dated 11/08/16. PROJECT: OTAY RANCH VILLAGE 3 CHULA VISTA, CALIFORNIA TITLE: SITE PLAN R. Collins 278938.1000 B. Kettmann B. Kettmann August 2017 FIGURE 2 Otay_Village_III_SGP_2017 08.dwg LEGEND Soil Gas Probe Location A' Cross Section Lines 11x17 --- ATTACHED XREF'S: --- ATTACHED IMAGES: Homefed-Otay_Aerial; DRAWING NAME: L:\Graphics\ProjectsbyName\HomeFed Otay\280845\ Otay_Village_III_SGP_2017 08.dwg --- PLOT DATE: August 08, 2017 - 3:56PM --- LAYOUT: X-SECT-11x17L A DRAFT: Preliminary and under development 0 300 600 SCALE IN FEET NOTES: All dimensions and locations are approximate. Modified from a map provided by Google Earth Professional, dated 11/08/16. PROJECT: OTAY RANCH VILLAGE 3 CHULA VISTA, CALIFORNIA TITLE: SITE PLAN SHOWING CROSS SECTION LOCATIONS R. Collins 278938.1000 B. Kettmann G. McCue August 2017 FIGURE 3 Otay_Village_III_SGP_2017 08.dwg :(67 $ Elevation (msl) ($67 $ 320 SGP-223 SGP-211 300 SGP-202 SGP-196 SGP-126 280 SGP-51 260 5HWDLQLQJ :DOO 11x17 --- ATTACHED XREF'S: --- ATTACHED IMAGES: Cross Section A Update; Draft X-SecA; DRAWING NAME: L:\Graphics\ProjectsbyName\HomeFed Otay\280845\ Otay_Village_III_X-SECT-A.dwg --- PLOT DATE: August 11, 2017 - 1:54PM --- LAYOUT: 11X17L 240 SGP-09 220 20 SCALE (feet) 200 200 LEGEND SGP-211 NOTES: Soil Gas Probe ppmv = parts per million by volume. msl = mean sea level. See Figure location of Cross Section. -- = not analyzed. All dimensions and locations are approximate. PROJECT: 27$< 5$1&+ 9,//$*( &+8/$ 9,67$ &$/,)251,$ Total Boring Depth TITLE: &5266 6(&7,21 $ $ Fill R. Collins Native Soil 280845.0000.0000 B. Kettmann G. McCue July 2017 ),*85( Otay_Village_III_X-SECT-A.dwg Elevation (msl) 320 6287+ % 1257+ % 300 +HULWDJH 5RDG SGP-07 SGP-42 SGP-126 280 SGP-108 SGP-101 SGP-352 260 11x17 --- ATTACHED XREF'S: --- ATTACHED IMAGES: Cross Section B Update; Draft X-SecB; DRAWING NAME: L:\Graphics\ProjectsbyName\HomeFed Otay\280845\ Otay_Village_III_X-SECT-B.dwg --- PLOT DATE: August 11, 2017 - 1:55PM --- LAYOUT: 11X17L 240 220 20 SCALE (feet) 200 NOTES: LEGEND SGP-101 Soil Gas Probe ppmv = parts per million by volume. msl = mean sea level. See Figure location of Cross Section. -- = not analyzed. All dimensions and locations are approximate. PROJECT: 27$< 5$1&+ 9,//$*( &+8/$ 9,67$ &$/,)251,$ Total Boring Depth TITLE: &5266 6(&7,21 % % Fill Native Soil R. Collins 280845.0000.0000 B. Kettmann G. McCue July 2017 ),*85( Otay_Village_III_X-SECT-B.dwg SGP-745 (7/14/2017) SGP-769 (6/26/2017) Depth ppmv ppmv (ft) No Purge Post Purge 5 14 -- Depth ppmv ppmv (ft) No Purge Post Purge 5 -17 SGP-816 SGP-817 Depth ppmv ppmv (ft) No Purge Post Purge 5 -ND Dup -ND LEGEND Soil Gas Probe Location SGP-818 Depth ppmv ppmv (ft) No Purge Post Purge -3 18 SGP-06 (7/12/2017) 5,000 Depth ppmv ppmv (ft) No Purge Post Purge 5 -ND SGP-760 (7/14/2017) Depth ppmv ppmv (ft) No Purge Post Purge 5 47 -- Depth ppmv ppmv (ft) No Purge Post Purge 5 14 -- SGP-825 SGP-05 (7/12/2017) Depth ppmv ppmv (ft) No Purge Post Purge 5 -52 / 49 Depth ppmv ppmv (ft) No Purge Post Purge 5 -ND SGP-735 (7/14/2017) Depth ppmv ppmv (ft) No Purge Post Purge 5 12 -- SGP-07 (7/17/2017) Depth ppmv ppmv (ft) No Purge Post Purge 5 38,000 490 SGP-824 Depth ppmv ppmv (ft) No Purge Post Purge 5 -ND SGP-711 (7/13/2017) Depth ppmv ppmv (ft) No Purge Post Purge 5 10 -- SGP-04 (7/12/2017) Depth ppmv ppmv (ft) No Purge Post Purge 5 ND -- SGP-Lot A East Depth ppmv ppmv (ft) No Purge Post Purge 5 -37 Dup -25 DRAWING NAME: L:\Graphics\ProjectsbyName\HomeFed Otay\280845\ Otay_Village_III_SGP_2017 08.dwg --- PLOT DATE: August 15, 2017 - 4:18PM --- LAYOUT: Methane at 5 feet-11x17L SGP-03 (7/13/2017) 11x17 --- ATTACHED XREF'S: --- ATTACHED IMAGES: Homefed-Otay_Aerial; Methane Contour (ppmv) Depth ppmv ppmv (ft) No Purge Post Purge 5 11 -- SGP-699 (7/12/2017) SGP-Lot A West Depth ppmv ppmv (ft) No Purge Post Purge 5 90 6,300 SGP-01 (7/13/2017) Depth ppmv ppmv (ft) No Purge Post Purge 5 16 -- Depth ppmv ppmv (ft) No Purge Post Purge 5 -ND SGP-196 (7/13/2017) SGP-02 (7/13/2017) SGP-223 Depth ppmv ppmv (ft) No Purge Post Purge 5 20 -- Depth ppmv ppmv (ft) No Purge Post Purge 5 ND -- SGP-42 (7/12/2017) Depth ppmv ppmv (ft) No Purge Post Purge 5 -ND SGP-202 (7/13/2017) Depth ppmv ppmv (ft) No Purge Post Purge 5 18 71 0 Depth ppmv ppmv (ft) No Purge Post Purge 5 330 1,700 SGP-324 Depth ppmv ppmv (ft) No Purge Post Purge 5 -ND SGP-09 (7/13/2017) Depth ppmv ppmv (ft) No Purge Post Purge 5 ND -- SGP-211 (7/13/2017) Depth ppmv ppmv (ft) No Purge Post Purge 5 21 ND SGP-51 (7/13/2017) Depth ppmv ppmv (ft) No Purge Post Purge 5 14 ND 300 600 SCALE IN FEET NOTES: ppmv = parts per million by volume. ND = not detected at limit indicated on official laboratory report. -- = not analyzed. All dimensions and locations are approximate. Modified from a map provided by Google Earth Professional, dated 11/08/16. PROJECT: SGP-335 Depth ppmv ppmv (ft) No Purge Post Purge 5 -430 SGP-126 (7/12/2017) Depth ppmv ppmv (ft) No Purge Post Purge 5 800 1,200 SGP-253 (7/14/2017) Depth ppmv ppmv (ft) No Purge Post Purge 5 ND -- SGP-94 (7/14/2017) Depth ppmv ppmv (ft) No Purge Post Purge 5 ND ND SGP-108 (7/14/2017) SGP-60 Depth ppmv ppmv (ft) No Purge Post Purge 5 -ND Depth ppmv ppmv (ft) No Purge Post Purge 5 20 ND SGP-101 (7/14/2017) SGP-73 SGP-352 SGP-342 (7/14/2017) Depth ppmv ppmv (ft) No Purge Post Purge 5 62 18 / 19 Depth ppmv ppmv (ft) No Purge Post Purge 5 -ND Depth ppmv ppmv (ft) No Purge Post Purge 5 -68 Depth ppmv ppmv (ft) No Purge Post Purge 5 -17 OTAY RANCH VILLAGE 3 CHULA VISTA, CALIFORNIA TITLE: SITE PLAN SHOWING METHANE CONCENTRATIONS IN SOIL GAS AT 5 FEET BELOW GRADE R. Collins 278938.1000 B. Kettmann G. McCue August 2017 FIGURE 6 Otay_Village_III_SGP_2017 08.dwg LEGEND Soil Gas Probe Location SGP-760 (7/14/2017) Depth ppmv ppmv (ft) No Purge Post Purge 20 ND -- SGP-818 5,000 Depth ppmv ppmv (ft) No Purge Post Purge 10 -ND Methane Contour (ppmv) SGP-817 SGP-769 (6/26/2017) Depth ppmv ppmv (ft) No Purge Post Purge 15 46 -- SGP-05 (7/12/2017) Depth ppmv ppmv (ft) No Purge Post Purge 10 -ND SGP-825 Depth ppmv ppmv (ft) No Purge Post Purge 13 57 -- SGP-735 (7/14/2017) Depth ppmv ppmv (ft) No Purge Post Purge 25 82 -- SGP-04 (7/12/2017) SGP-711 (7/13/2017) DRAWING NAME: L:\Graphics\ProjectsbyName\HomeFed Otay\280845\ Otay_Village_III_SGP_2017 08.dwg --- PLOT DATE: August 15, 2017 - 4:19PM --- LAYOUT: Methane deeper than 5 feet-11x17L Depth ppmv ppmv (ft) No Purge Post Purge 13 35 -- 11x17 --- ATTACHED XREF'S: --- ATTACHED IMAGES: Homefed-Otay_Aerial; Depth ppmv ppmv (ft) No Purge Post Purge 12 -ND Depth ppmv ppmv (ft) No Purge Post Purge 8 12 -- SGP-03 (7/13/2017) SGP-Lot A East Depth ppmv ppmv (ft) No Purge Post Purge 15 46 -23 59 / 59* -- Depth ppmv ppmv (ft) No Purge Post Purge 20 -10 SGP-Lot A West SGP-699 (7/12/2017) SGP-01 (7/13/2017) Depth ppmv ppmv (ft) No Purge Post Purge -ND 9 Depth ppmv ppmv (ft) No Purge Post Purge 25 16 13,000 Depth ppmv ppmv (ft) No Purge Post Purge 10 38 -- SGP-02 (7/13/2017) SGP-196 (7/13/2017) Depth ppmv ppmv (ft) No Purge Post Purge 15 37 -32 77 -- Depth ppmv ppmv (ft) No Purge Post Purge 30 780 -- SGP-42 (7/12/2017) SGP-223 Depth ppmv ppmv (ft) No Purge Post Purge 25 -150 SGP-202 (7/13/2017) Depth ppmv ppmv (ft) No Purge Post Purge 25 31,000 4,200 0 Depth ppmv ppmv (ft) No Purge Post Purge 25 4,300 4,600 SGP-324 Depth ppmv ppmv (ft) No Purge Post Purge 25 -140 SGP-09 (7/13/2017) Depth ppmv ppmv (ft) No Purge Post Purge 10 36 -- SGP-211 (7/13/2017) Depth ppmv ppmv (ft) No Purge Post Purge 25 12 8,800 SGP-51 (7/13/2017) Depth ppmv ppmv (ft) No Purge Post Purge 25 110 200 300 600 SCALE IN FEET NOTES: ppmv = parts per million by volume. ND = not detected at limit indicated on official laboratory report. * = replicate (REP) sample collected. -- = not analyzed. All dimensions and locations are approximate. Modified from a map provided by Google Earth Professional, dated 11/08/16. PROJECT: SGP-335 Depth ppmv ppmv (ft) No Purge Post Purge 30 -210 SGP-126 (7/12/2017) Depth ppmv ppmv (ft) No Purge Post Purge 25 4,800 17,000 SGP-253 (7/14/2017) Depth ppmv ppmv (ft) No Purge Post Purge 22 ND -- SGP-94 (7/14/2017) Depth ppmv ppmv (ft) No Purge Post Purge 25 9,200 9,400 SGP-108 (7/14/2017) SGP-60 Depth ppmv ppmv (ft) No Purge Post Purge 25 -11 Depth ppmv ppmv (ft) No Purge Post Purge 25 12 1,300 SGP-101 (7/14/2017) SGP-73 SGP-352 SGP-342 (7/14/2017) Depth ppmv ppmv (ft) No Purge Post Purge 25 19 4,800 Depth ppmv ppmv (ft) No Purge Post Purge -ND 25 Depth ppmv ppmv (ft) No Purge Post Purge -25 970 Depth ppmv ppmv (ft) No Purge Post Purge ND -32 OTAY RANCH VILLAGE 3 CHULA VISTA, CALIFORNIA TITLE: SITE PLAN SHOWING METHANE CONCENTRATIONS IN SOIL GAS DEEPER THAN 5 FEET BELOW GRADE R. Collins 278938.1000 B. Kettmann G. McCue August 2017 FIGURE 7 Otay_Village_III_SGP_2017 08.dwg SGP-818 SGP-711 Depth (ft) 5 8 Cancer Risk NA NA Depth (ft) 5 10 SGP-817 Depth (ft) 5 5 10 Noncancer Risk 4.1E-05 0.0E+00 Cancer Risk 3.8E-09 9.6E-09 4.3E-09 Noncancer Risk 1.7E-04 4.4E-04 1.5E-04 Cancer Risk 1.4E-08 3.8E-09 Noncancer Risk 6.1E-04 1.7E-04 SGP-816 Depth (ft) 3 Depth (ft) 5 Cancer Noncancer Risk Risk 2.0E-07 9.8E-03 Cancer Noncancer Risk Risk 2.6E-08 8.2E-04 SGP-42 SGP-824 SGP-745 Depth (ft) 5 LEGEND Depth Cancer Noncancer (ft) Risk Risk 5 1.1E-07 6.1E-03 25 4.0E-08 2.0E-03 Cancer Noncancer Risk Risk 4.7E-08 3.0E-03 SGP-735 Depth (ft) 5 15 SGP-769 Cancer Risk NA NA SGP-825 Noncancer Risk 1.1E-04 1.7E-05 Depth Cancer Noncancer (ft) Risk Risk 5 8.9E-08 3.8E-03 15 3.3E-09 1.8E-04 Soil Gas Probe Location with Noncancer and Cancer Risk Values Depth Cancer Noncancer Risk (ft) Risk 5 1.1E-07 2.1E-03 12 3.2E-08 8.8E-04 SGP-760 Depth Cancer Noncancer (ft) Risk Risk 5 1.0E-08 1.1E-03 20 2.6E-08 1.1E-03 SGP-699 Depth (ft) 5 25 11x17 --- ATTACHED XREF'S: --- ATTACHED IMAGES: Homefed-Otay_Aerial; DRAWING NAME: L:\Graphics\ProjectsbyName\HomeFed Otay\280845\ Otay_Village_III_SGP_2017 08.dwg --- PLOT DATE: August 08, 2017 - 4:00PM --- LAYOUT: Noncancer-Cancer Risks-11x17L SGP-42 Cancer Noncancer Risk Risk 4.2E-07 1.9E-02 7.7E-08 3.1E-03 Depth Cancer Noncancer Risk (ft) Risk 5 1.1E-07 6.1E-03 25 4.0E-08 2.0E-03 SGP-211 Depth Cancer Noncancer (ft) Risk Risk 5 1.8E-08 1.8E-03 25 4.7E-08 1.9E-03 SGP-202 Depth Cancer Noncancer (ft) Risk Risk 5 7.6E-09 9.1E-04 25 2.0E-08 9.1E-04 DRAFT: Preliminary and under development SGP-223 Depth Cancer Noncancer Risk (ft) Risk 5 2.0E-07 4.5E-03 25 3.1E-08 5.4E-04 SGP-196 Depth Cancer Noncancer (ft) Risk Risk 5 2.5E-09 4.9E-04 30 3.3E-08 1.4E-03 SGP-253 Depth Cancer Noncancer Risk (ft) Risk 5 2.7E-07 1.3E-02 22 1.1E-08 4.5E-04 SGP-126 Depth Cancer Noncancer Risk (ft) Risk 5 4.3E-07 1.9E-02 25 1.1E-07 4.0E-03 0 SGP-51 Cancer Noncancer Risk Risk 2.4E-06 8.8E-03 2.1E-07 5.1E-04 SGP-335 Depth Cancer Noncancer (ft) Risk Risk 5 1.2E-02 2.7E-07 25 8.1E-04 1.9E-08 Depth Cancer Noncancer Risk (ft) Risk 5 1.8E-07 8.0E-03 30 1.1E-07 4.2E-03 SGP-342 Depth (ft) 5 32 Cancer Noncancer Risk Risk 9.2E-08 3.9E-03 4.4E-09 2.3E-05 600 SCALE IN FEET SGP-324 Depth (ft) 5 25 300 NOTES: NA = not applicable. All dimensions and locations are approximate. Modified from a map provided by Google Earth Professional, dated 11/08/16. PROJECT: OTAY RANCH VILLAGE 3 CHULA VISTA, CALIFORNIA TITLE: SITE PLAN SHOWING POTENTIAL NONCANCER AND CANCER RISK VALUES R. Collins 278938.1000 B. Kettmann SGP-60 Depth (ft) 5 25 Cancer Noncancer Risk Risk 2.0E-07 1.4E-02 NA 3.4E-04 SGP-94 SGP-108 SGP-73 SGP-101 Depth Cancer Noncancer Risk (ft) Risk 5 8.4E-08 3.4E-03 25 2.5E-08 9.1E-04 Depth Cancer Noncancer Risk (ft) Risk 5 1.3E-08 1.5E-03 25 8.2E-09 3.3E-04 Depth Cancer Noncancer Risk (ft) Risk 5 3.7E-08 2.0E-03 25 8.4E-08 3.4E-03 Depth Cancer Noncancer (ft) Risk Risk 5 1.3E-07 6.2E-03 25 2.7E-08 1.1E-03 SGP-352 Depth (ft) 5 25 Cancer Noncancer Risk Risk 9.2E-08 5.2E-03 3.7E-08 1.5E-03 G. McCue August 2017 FIGURE 8 Otay_Village_III_SGP_2017 08.dwg This page intentionally left blank Site Assessment and Human Health Vapor Risk Assessment Report  Otay Ranch Village 3, Heritage Road, Chula Vista, CA  August 17, 2017                      TABLES      This page intentionally left blank Table 1 Soil Gas Probe Construction Detail Otay Ranch Village 3 Heritage Road, Chula Vista, California Probe Location Lot Type Probe ID Date Installed Depth (fbg) Lot 42 Lot 42 Lot 51 Lot 51 Lot 60 Lot 60 Lot 73 Lot 73 Lot 94 Lot 94 Lot 101 Lot 101 Lot 108 Lot 108 Lot 126 Lot 126 Lot 196 Lot 196 Lot 202 Lot 202 Lot 211 Lot 211 Lot 223 Lot 223 Lot 253 Lot 253 Lot 324 Lot 324 Lot 335 Lot 335 Lot 342 Lot 342 Lot 352 Lot 352 Lot 699 Lot 699 Lot 711 Lot 711 Lot 735 Lot 735 Lot 745 Lot 760 Lot 760 Lot 769 Lot 769 Lot 814 Lot 814 Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential School School SGP‐42‐05 SGP‐42‐25 SGP‐51‐05 SGP‐51‐25 SGP‐60‐5 SGP‐60‐25 SGP‐73‐5 SGP‐73‐25 SGP‐94‐5 SGP‐94‐25 SGP‐101‐5 SGP‐101‐25 SGP‐108‐5 SGP‐108‐25 SGP‐126‐5 SGP‐126‐25 SGP‐196‐5 SGP‐196‐30 SGP‐202‐5 SGP‐202‐25 SGP‐211‐5 SGP‐211‐25 SGP‐223‐5 SGP‐223‐25 SGP‐253‐5 SGP‐253‐22 SGP‐324‐5 SGP‐324‐25 SGP‐335‐5 SGP‐335‐30 SGP‐342‐05 SGP‐342‐32 SGP‐352‐5 SGP‐352‐25 SGP‐699‐5 SGP‐699‐25 SGP‐711‐5 SGP‐711‐8 SGP‐735‐5 SGP‐735‐15 SGP‐745‐5 SGP‐760‐5 SGP‐760‐20 SGP‐769‐5 SGP‐769‐15 SGP‐01‐5 SGP‐01‐10 6/23/2017 6/23/2017 6/23/2017 6/23/2017 7/13/2017 7/13/2017 7/13/2017 7/13/2017 6/26/2017 6/26/2017 6/26/2017 6/26/2017 6/26/2017 6/26/2017 6/26/2017 6/26/2017 6/23/2017 6/23/2017 6/23/2017 6/23/2017 6/23/2017 6/23/2017 7/12/2017 7/12/2017 6/26/2017 6/26/2017 7/13/2017 7/13/2017 7/13/2017 7/13/2017 6/23/2017 6/23/2017 7/13/2017 7/13/2017 6/26/2017 6/26/2017 6/26/2017 6/26/2017 6/23/2017 6/23/2017 6/23/2017 6/23/2017 6/23/2017 6/23/2017 6/23/2017 6/7/2017 6/7/2017 5 25 5 25 5 25 25 5 5 25 5 25 5 25 5 25 5 30 5 25 5 25 5 25 5 22 5 25 5 30 5 32 5 5 5 25 5 8 5 15 5 5 20 5 15 5 10 1 of 2 Approximate Depth to  Native Soil (fbg) 22 22 56 56 71 71 100 100 35 35 35 35 38 38 39 39 34 34 38 38 41 41 77 77 37 37 42 42 26 26 34 34 50 50 22 22 14 14 17 17 4 29 29 15 15 ‐‐ ‐‐ Table 1 Soil Gas Probe Construction Detail Otay Ranch Village 3 Heritage Road, Chula Vista, California Probe Location Lot Type Lot 814 School Lot 814 School Lot 814 School Lot 814 School Lot 814 School Lot 814 School Lot 815 School Lot 815 School Lot 815 School Lot 815 School Lot 815 School Lot 815 School Lot 816 Commercial Lot 817 Commercial Lot 817 Commercial Lot 818 Commercial Lot 818 Commercial Lot 824 Residential Lot 824 Residential Lot 825 Residential Lot 825 Residential Lot A School Lot A School Lot A  School Lot A  School Lot K Worker Lot K  Worker Lot K  Worker Lot K  Worker Lot K  Worker Lot K  Worker Notes: ‐‐ = Probe located in native soil. fbg = feet below grade Probe ID Date Installed Depth (fbg) SGP‐02‐5 SGP‐02‐15 SGP‐02‐30 SGP‐03‐5 SGP‐03‐15 SGP‐03‐23 SGP‐04‐5 SGP‐04‐13 SGP‐05‐5 SGP‐05‐13 SGP‐06‐5 SGP‐07‐5 SGP‐816‐3 SGP‐817‐5 SGP‐817‐10 SGP‐818‐5 SGP‐818‐10 SGP‐824‐5 SGP‐824‐10 SGP‐825‐5 SGP‐825‐12 SGP‐A‐West‐5 SGP‐A‐West‐9 SGP‐A‐East‐5 SGP‐A‐East‐12 SGP‐08‐5 SGP‐08‐10 SGP‐09‐5 SGP‐09‐10 SGP‐10‐5 SGP‐10‐10 6/7/2017 6/7/2017 6/7/2017 6/7/2017 6/7/2017 6/7/2017 6/7/2017 6/7/2017 6/7/2017 6/7/2017 6/7/2017 6/7/2017 7/12/2017 7/12/2017 7/12/2017 7/12/2017 7/12/2017 7/12/2017 7/12/2017 7/13/2017 7/13/2017 7/12/2017 7/12/2017 7/12/2017 7/12/2017 6/7/2017 6/7/2017 6/7/2017 6/7/2017 6/7/2017 6/7/2017 5 15 30 5 15 23 5 13 5 13 5 5 3 5 10 5 10 5 10 5 12 5 9 5 12 5 10 5 10 5 10 2 of 2 Approximate Depth to  Native Soil (fbg) 1 1 1 7 7 7 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 2 2 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 5 5 18 18 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ Table 2 Soil Gas Probe Handheld Detector Methane Results‐LEL Percentage Otay Ranch Village 3 Heritage Road, Chula Vista, CA Probe ID Probe  Depth  (fbg) 5 5 10 10 5 5 15 15 32 32 5 5 15 15 23 23 5 5 13 13 5 5 13 13 5 5 5 5 5 5 10 10 5 5 10 10 5 5 10 10 Date SGP‐01 6/7/2017 SGP‐01 6/7/2017 SGP‐01 6/8/2017 SGP‐01 6/8/2017 SGP‐02 6/8/2017 SGP‐02 6/8/2017 SGP‐02  6/8/2017 SGP‐02 6/8/2017 SGP‐02 6/8/2017 SGP‐02 6/8/2017 SGP‐03 6/7/2017 SGP‐03 6/7/2017 SGP‐03 6/7/2017 SGP‐03 6/7/2017 SGP‐03 6/7/2017 SGP‐03 6/7/2017 SGP‐04 6/7/2017 SGP‐04 6/7/2017 SGP‐04 6/7/2017 SGP‐04 6/7/2017 SGP‐05 6/7/2017 SGP‐05 6/7/2017 SGP‐05 6/7/2017 SGP‐05 6/7/2017 SGP‐06 6/7/2017 SGP‐06 6/7/2017 SGP‐07 6/7/2017 SGP‐07 6/7/2017 SGP‐08 6/8/2017 SGP‐08 6/8/2017 SGP‐08 6/8/2017 SGP‐08 6/8/2017 SGP‐09 6/8/2017 SGP‐09 6/8/2017 SGP‐09 6/8/2017 SGP‐09 6/8/2017 SGP‐10 6/8/2017 SGP‐10 6/8/2017 SGP‐10 6/8/2017 SGP‐10 6/8/2017 Notes: fbg = feet below grade LEL = lower explosive limit ppmv = parts per million by volume Time % LEL of  Methane 13:30 19:25 9:40 15:50 10:00 16:10 10:15 16:25 10:30 16:40 12:40 18:35 12:50 18:50 13:10 19:10 11:45 18:10 11:55 18:25 10:55 17:40 11:05 17:55 10:10 17:05 10:30 17:25 10:40 16:55 11:00 17:10 11:15 17:25 11:30 17:40 11:40 17:55 11:55 18:15 17 11 6 9 8 11 12 13 17 19 16 16 27 11 13 9 14 12 14 12 100 100 100 67 100 100 14 69 100 100 12 14 100 100 100 100 26 28 27 29 Soil Gas  Pressure  (IWC) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Carbon  Dioxide (ppmv) 2,310 1,260 1,790 2,220 1,500 1,420 1,980 2,105 910 890 930 1,830 1,260 1,170 2,160 1,590 2,130 2,610 1,500 1,380 830 1,890 4,570 5,010 900 850 4,830 9,500 400 410 510 490 950 930 900 870 3,270 3,310 2,780 2,820 IWC = inches in water column % = percent Page 1 of 1 Oxygen (%) 15.2 17 10.8 14.6 19.8 11.5 9.1 8.8 7.1 6.9 20.1 7.5 14.1 11.1 19.5 19.3 8.9 9.2 10.1 10.4 11.4 16.1 11.6 13.2 22.2 19.1 20.9 20.9 20.3 19.8 21.3 20.9 18.1 17.9 16 15.5 4.6 4.3 4.4 4.6 Table 3 Soil Gas Probe Handheld Detector Methane Results‐PPMV Otay Ranch Village 3 Heritage Road, Chula Vista, CA Probe ID Probe  Depth (fbg) Date Time SGP‐42‐5 5 6/27/2017 7:10 SGP‐42‐25 25 6/27/2017 7:26 SGP‐51‐5 5 6/27/2017 7:40 SGP‐51‐25 25 6/27/2017 8:10 SGP‐94‐5 5 6/27/2017 11:45 SGP‐94‐25 25 6/27/2017 12:00 SGP‐101‐5 5 6/27/2017 10:15 SGP‐101‐25 25 6/27/2017 10:35 SGP‐108‐5 5 6/27/2017 11:05 SGP‐108‐25 25 6/27/2017 11:30 SGP‐126‐5 5 6/27/2017 12:20 SGP‐126‐5 25 6/27/2017 12:35 SGP‐196‐5 5 6/26/2017 13:10 SGP‐196‐30 30 6/26/2017 13:25 SGP‐202‐5 5 6/26/2017 13:50 SGP‐202‐25 25 6/26/2017 14:05 SGP‐211‐5 5 6/26/2017 14:30 SGP‐211‐25 25 6/26/2017 14:45 SGP‐253‐5 5 6/28/2017 8:00 SGP‐253‐22 22 6/28/2017 8:20 SGP‐342‐5 5 6/27/2017 9:30 SGP‐342‐32 32 6/27/2017 9:45 SGP‐699‐5 5 6/28/2017 9:45 SGP‐699‐25 25 6/28/2017 10:00 No Purge  Methane (NP) or Post  (ppmv) Purge (PP) NP PP NP PP NP PP NP PP NP PP NP PP NP PP NP PP NP PP NP PP NP PP NP PP NP PP NP PP NP PP NP PP NP PP NP PP NP PP NP PP NP PP NP PP NP PP NP PP Page 1 of 2 0 0 23,000 4,950 10 0 260 0 0 0 9,400 5,450 0 0 2,800 1,050 250 0 1,250 930 15,200 14,250 11,000 9,000 290 0 6,600 5,800 200 600 6,100 2,700 0 0 8,780 4,550 0 0 0 0 300 125 0 0 1,800 8,500 8,450 9,100 Soil Gas  Pressure  (IWC) Carbon  Dioxide (ppmv) Oxygen (%) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.3 ‐‐ 1.4 ‐‐ 0.3 ‐‐ 5.6 ‐‐ 0.8 ‐‐ 3.8 ‐‐ 1.7 ‐‐ 2.8 ‐‐ 3 ‐‐ 4.6 ‐‐ 5 ‐‐ 0.8 ‐‐ 0.3 ‐‐ 1.3 ‐‐ 1.4 ‐‐ 1.2 ‐‐ 0.1 ‐‐ 1.1 ‐‐ 1.1 ‐‐ 1.7 ‐‐ 1.6 ‐‐ 5.4 ‐‐ 0.6 ‐‐ 0.5 ‐‐ 2.1 ‐‐ 0.3 ‐‐ 1.8 ‐‐ 0.8 ‐‐ 18.6 ‐‐ 1.1 ‐‐ 11.9 ‐‐ 4 ‐‐ 17 ‐‐ 0.8 ‐‐ 4.2 ‐‐ 5.7 ‐‐ 18.1 ‐‐ 0 ‐‐ 8.5 ‐‐ 16.5 ‐‐ 18.2 ‐‐ 16.7 ‐‐ 15.4 ‐‐ 1.1 ‐‐ 11.8 ‐‐ 0.8 ‐‐ 0.4 ‐‐ 0 ‐‐ Table 3 Soil Gas Probe Handheld Detector Methane Results‐PPMV Otay Ranch Village 3 Heritage Road, Chula Vista, CA Probe ID Probe  Depth (fbg) Date Time SGP‐711‐5 5 6/28/2017 9:15 SGP‐711‐8 8 6/28/2017 9:30 SGP‐735‐5 5 6/26/2017 10:48 SGP‐735‐15 15 6/26/2017 11:02 SGP‐745‐5 5 6/26/2017 10:30 SGP‐760‐5 5 6/26/2017 8:40 SGP‐760‐20 20 6/26/2017 9:20 SGP‐769‐5 5 6/26/2017 9:50 SGP‐769‐15 15 6/26/2017 10:10 SGP‐06‐5 5 6/28/2017 11:00 SGP‐07‐5 5 6/28/2017 11:20 SGP‐05‐5 5 6/28/2017 11:35 SGP‐05‐13 13 6/28/2017 11:45 SGP‐09‐5 5 6/28/2017 12:30 SGP‐09‐10 10 6/28/2017 13:00 Notes: fbg = feet below grade ppmv = parts per million by volume ‐‐ = not available No Purge  Methane (NP) or Post  (ppmv) Purge (PP) NP PP NP PP NP PP NP PP NP PP NP PP NP PP NP PP NP PP NP PP NP PP NP PP NP PP NP PP NP PP Soil Gas  Pressure  (IWC) Carbon  Dioxide (ppmv) Oxygen (%) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.3 ‐‐ 0 ‐‐ 0.0 ‐‐ 0.6 ‐‐ 0.0 ‐‐ 0.1 ‐‐ 0.6 ‐‐ 1.2 ‐‐ 1.3 ‐‐ 0.1 ‐‐ 0.3 ‐‐ 6.4 ‐ 2.4 ‐‐ 0.3 ‐‐ 0 ‐‐ 20.9 ‐‐ 20.9 ‐‐ 20.3 ‐‐ 14 ‐‐ 18.9 ‐‐ 17.3 ‐‐ 7.6 ‐‐ 13.4 ‐‐ 13.8 ‐‐ 16.5 ‐‐ 10 ‐‐ 16.8 ‐‐ 14.8 ‐‐ 0 ‐‐ 14.3 ‐‐ 0 0 0 0 115 0 55 5 750 90 0 0 0 0 0 0 20 0 650 810 37,500 520 35 20 85 55 96 670 750 620 IWC = inches in water column % = percent Page 2 of 2 This page intentionally left blank Table 4 Soil Gas Mobile and Stationary Laboratory Analytical Results‐Fixed Gases Otay Ranch Village 3 Heritage Road, Chula Vista, CA Probe  Location Lot Type Probe ID Sample Name Sample Type Lot 42 Lot 42 Lot 42 Lot 42 Lot 51 Lot 51 Lot 51 Lot 51 Lot 60 Lot 60 Lot 73 Lot 73 Lot 94 Lot 94 Lot 94 Lot 94 Lot 101 Lot 101 Lot 101 Lot 101 Lot 101 Lot 108 Lot 108 Lot 108 Lot 108 Lot 126 Lot 126 Lot 126 Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential SGP‐42‐5 SGP‐42‐5 SGP‐42‐25 SGP‐42‐25 SGP‐51‐5 SGP‐51‐5 SGP‐51‐25 SGP‐51‐25 SGP‐60‐5 SGP‐60‐25 SGP‐73‐5 SGP‐73‐25 SGP‐94‐5 SGP‐94‐5 SGP‐94‐25 SGP‐94‐25 SGP‐101‐5 SGP‐101‐5 SGP‐101‐5 SGP‐101‐25 SGP‐101‐25 SGP‐108‐5 SGP‐108‐5 SGP‐108‐25 SGP‐108‐25 SGP‐126‐5 SGP‐126‐5 SGP‐126‐25 SGP‐42‐5' Pre SGP‐42‐5' Post SGP‐42‐25' Pre SGP‐42‐25' Post SGP‐51‐5' Pre SGP‐51‐5' Post SGP‐51‐25' Pre SGP‐51‐25' Post SGP‐60‐5 SGP‐60‐25 SGP‐73‐5 SGP‐73‐25 SGP‐94‐5' Pre SGP‐94‐5' Post SGP‐94‐25' Pre SGP‐94‐25' Post SGP‐101‐5' Pre SGP‐101‐5' Post SGP‐101‐5' Post Rep SGP‐101‐25' Pre SGP‐101‐25' Post SGP‐108‐5' Pre SGP‐108‐5' Post SGP‐108‐25' Pre SGP‐108‐25' Post SGP‐126‐5' Pre SGP‐126‐5' Post SGP‐126‐25' Pre Pre‐Purge Post Purge Pre‐Purge Post Purge Pre‐Purge Post Purge Pre‐Purge Post Purge Post Purge Post Purge Post Purge Post Purge Pre‐Purge Post Purge Pre‐Purge Post Purge Pre‐Purge Post Purge Post Purge Pre‐Purge Post Purge Pre‐Purge Post Purge Pre‐Purge Post Purge Pre‐Purge Post Purge Pre‐Purge Page 1 of 4  Probe  Depth (fbg) 5 5 25 25 5 5 25 25 5 25 5 25 5 5 25 25 5 5 5 25 25 5 5 25 25 5 5 25 Sample Date 07/12/2017 07/12/2017 07/12/2017 07/12/2017 07/13/2017 07/13/2017 07/13/2017 07/13/2017 07/18/2017 07/18/2017 07/18/2017 07/18/2017 07/14/2017 07/14/2017 07/14/2017 07/14/2017 07/14/2017 07/14/2017 07/14/2017 07/14/2017 07/14/2017 07/14/2017 07/14/2017 07/14/2017 07/14/2017 07/12/2017 07/12/2017 07/12/2017 Carbon  Dioxide (%) ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ Methane (ppmv) Oxygen (%) 18 71 31,000 4,200 14 ND<10 110 200 ND<10 11 ND<10 ND<10 ND<10 ND<10 9,200 9,400 62 18 19 19 4,800 20 ND<10 12 1,300 800 1,200 4,800 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ Table 4 Soil Gas Mobile and Stationary Laboratory Analytical Results‐Fixed Gases Otay Ranch Village 3 Heritage Road, Chula Vista, CA Probe  Location Lot Type Probe ID Sample Name Sample Type Lot 126 Lot 196 Lot 196 Lot 202 Lot 202 Lot 202 Lot 202 Lot 211 Lot 211 Lot 211 Lot 211 Lot 223 Lot 223 Lot 253 Lot 253 Lot 324 Lot 324 Lot 335 Lot 335 Lot 342 Lot 342 Lot 352 Lot 352 Lot 699 Lot 699 Lot 699 Lot 699 Lot 711 Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential SGP‐126‐25 SGP‐196‐5 SGP‐196‐30 SGP‐202‐5 SGP‐202‐5 SGP‐202‐25 SGP‐202‐25 SGP‐211‐5 SGP‐211‐5 SGP‐211‐25 SGP‐211‐25 SGP‐223‐5 SGP‐223‐25 SGP‐253‐5 SGP‐253‐22 SGP‐324‐5 SGP‐324‐25 SGP‐335‐5 SGP‐335‐30 SGP‐342‐5 SGP‐342‐32 SGP‐352‐5 SGP‐352‐25 SGP‐699‐5 SGP‐699‐5 SGP‐699‐25 SGP‐699‐25 SGP‐711‐5 SGP‐126‐25' Post SGP‐196‐5' Pre SGP‐196‐30' Pre SGP‐202‐5' Pre SGP‐202‐5' Post SGP‐202‐25' Pre SGP‐202‐25' Post SGP‐211‐5' Pre SGP‐211‐5' Post SGP‐211‐25' Pre SGP‐211‐25' Post SGP‐223‐5 SGP‐223‐25 SGP‐253‐5' Pre SGP‐253‐22' Pre SGP‐324‐5 SGP‐324‐25 SGP‐335‐5 SGP‐335‐30 SGP‐342‐5' Pre SGP‐342‐32' Pre SGP‐352‐5 SGP‐352‐25 SGP‐699‐5' Pre SGP‐699‐5' Post SGP‐699‐25' Pre SGP‐699‐25' Post SGP‐711‐5' Pre Post Purge Pre‐Purge Pre‐Purge Pre‐Purge Post Purge Pre‐Purge Post Purge Pre‐Purge Post Purge Pre‐Purge Post Purge Post Purge Post Purge Pre‐Purge Pre‐Purge Post Purge Post Purge Post Purge Post Purge Pre‐Purge Pre‐Purge Post Purge Post Purge Pre‐Purge Post Purge Pre‐Purge Post Purge Pre‐Purge Page 2 of 4  Probe  Depth (fbg) 25 5 30 5 5 25 25 5 5 25 25 5 25 5 22 5 25 5 30 5 32 5 25 5 5 25 25 5 Sample Date 07/12/2017 07/13/2017 07/13/2017 07/13/2017 07/13/2017 07/13/2017 07/13/2017 07/13/2017 07/13/2017 07/13/2017 07/13/2017 07/18/2017 07/18/2017 07/14/2017 07/14/2017 07/18/2017 07/18/2017 07/18/2017 07/18/2017 07/14/2017 07/14/2017 07/18/2017 07/18/2017 07/12/2017 07/12/2017 07/12/2017 07/12/2017 07/13/2017 Carbon  Dioxide (%) ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ Methane (ppmv) Oxygen (%) 17,000 20 780 330 1,700 4,300 4,600 21 ND<10 12 8,800 ND<10 150 ND<10 ND<10 ND<10 140 430 210 17 ND<10 68 970 90 6,300 16 13,000 10 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ Table 4 Soil Gas Mobile and Stationary Laboratory Analytical Results‐Fixed Gases Otay Ranch Village 3 Heritage Road, Chula Vista, CA Probe  Location Lot Type Probe ID Sample Name Sample Type Lot 711 Lot 735 Lot 735 Lot 745 Lot 760 Lot 760 Lot 769 Lot 769 Lot 824 Lot 825 Lot 825 Lot 816 Lot 817 Lot 817 Lot 817 Lot 818 Lot 818 Lot 814 Lot 814 Lot 814 Lot 814 Lot 814 Lot 814 Lot 814 Lot 814 Lot 814 Lot 814 Lot 814 Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Commercial Commercial Commercial Commercial Commercial Commercial School School School School School School School School School School School SGP‐711‐8 SGP‐735‐5 SGP‐735‐25 SGP‐745‐5 SGP‐760‐5 SGP‐760‐20 SGP‐769‐5 SGP‐769‐15 SGP‐824‐5 SGP‐825‐5 SGP‐825‐12 SGP‐816‐3 SGP‐817‐5 SGP‐817‐5 SGP‐817‐10 SGP‐818‐5 SGP‐818‐10 SGP‐01‐5 SGP‐01‐10 SGP‐02‐5 SGP‐02‐5 SGP‐02‐5 SGP‐02‐15 SGP‐02‐30 SGP‐02‐32 SGP‐03‐5 SGP‐03‐15 SGP‐03‐23 SGP‐711‐8' Pre SGP‐735‐5' Pre SGP‐735‐25' Pre SGP‐745‐5' Pre SGP‐760‐5' Pre SGP‐760‐20' Pre SGP‐769‐5' Pre SGP‐769‐15' Pre SGP‐824‐5 SGP‐825‐5 SGP‐825‐12 SGP‐816‐3 SGP‐817‐5 SGP‐817‐5 REP SGP‐817‐10 SGP‐818‐5 SGP‐818‐10 SGP‐01‐5' Pre SGP‐01‐10' Pre SGP‐02‐5 NP SGP‐02‐5 SGP‐02‐5' Pre SGP‐02‐15' Pre SGP‐02‐30 SGP‐02‐32' Pre SGP‐03‐5' Pre SGP‐03‐15' Pre SGP‐03‐23' Pre Pre‐Purge Pre‐Purge Pre‐Purge Pre‐Purge Pre‐Purge Pre‐Purge Pre‐Purge Pre‐Purge Post Purge Post Purge Post Purge Post Purge Post Purge Post Purge Post Purge Post Purge Post Purge Pre‐Purge Pre‐Purge Pre‐Purge Post Purge Pre‐Purge Pre‐Purge Post Purge Pre‐Purge Pre‐Purge Pre‐Purge Pre‐Purge Page 3 of 4  Probe  Depth (fbg) 8 5 25 5 5 20 5 15 5 5 12 3 5 5 10 5 10 5 10 5 5 5 15 30 32 5 15 23 Sample Date 07/13/2017 07/14/2017 07/14/2017 07/14/2017 07/14/2017 07/14/2017 07/14/2017 07/14/2017 07/17/2017 07/17/2017 07/17/2017 07/17/2017 07/17/2017 07/17/2017 07/17/2017 07/17/2017 07/17/2017 07/13/2017 07/13/2017 06/15/2017 06/15/2017 07/13/2017 07/13/2017 06/15/2017 07/13/2017 07/13/2017 07/13/2017 07/13/2017 Carbon  Dioxide (%) ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 1.09 ND<1.00 ‐‐ ‐‐ ND<1.00 ‐‐ ‐‐ ‐‐ ‐‐ Methane (ppmv) Oxygen (%) 12 12 82 14 14 ND<10 17 46 ND<10 ND<10 ND<10 18 ND<10 ND<10 ND<10 ND<10 ND<10 16 38 32 100 ND<10 37 26 77 11 46 59 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 16.6 11.4 ‐‐ ‐‐ 12.1 ‐‐ ‐‐ ‐‐ ‐‐ Table 4 Soil Gas Mobile and Stationary Laboratory Analytical Results‐Fixed Gases Otay Ranch Village 3 Heritage Road, Chula Vista, CA Probe  Location Lot Type Probe ID Sample Name Sample Type  Probe  Depth (fbg) 23 5 13 5 5 13 5 5 5 5 5 5 5 20 5 9 5 5 10 5 Sample Date Carbon  Dioxide (%) ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ND<1.00 ND<1.00 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ND<1.00 ‐‐ ‐‐ ND<1.00 1.09 Methane (ppmv) Lot 814 School SGP‐03‐23 SGP‐03‐23' Pre Rep Pre‐Purge 07/13/2017 59 Lot 814 School SGP‐04‐5 SGP‐04‐5' Pre Pre‐Purge 07/12/2017 ND<10 Lot 814 School SGP‐04‐13 SGP‐04‐13' Pre Pre‐Purge 07/12/2017 35 Lot 815 School SGP‐05‐5 SGP‐05‐5' Pre Pre‐Purge 07/12/2017 52 Lot 815 School SGP‐05‐5 SGP‐05‐5' Pre Rep Pre‐Purge 07/12/2017 49 Lot 815 School SGP‐05‐13 SGP‐05‐13' Pre Pre‐Purge 07/12/2017 57 Lot 815 School SGP‐06‐5 SGP‐06‐5 NP Pre‐Purge 06/15/2017 690 Lot 815 School SGP‐06‐5 SGP‐06‐5 Post Purge 06/15/2017 310 Lot 815 School SGP‐06‐5 SGP‐06‐5' Pre Pre‐Purge 07/12/2017 47 Lot 815 School SGP‐07 SGP‐07 PRE Pre‐Purge 07/17/2017 38,000 Lot 815 School SGP‐07 SGP‐07 POST Post Purge 07/17/2017 490 Lot A Park SGP‐A‐East‐5 SGP‐A‐East‐5 Post Purge 07/18/2017 37 Lot A Park SGP‐A‐East‐5 SGP‐A‐East‐5 REP Post Purge 07/18/2017 25 Lot A Park SGP‐A‐East‐20 SGP‐A‐East‐20 Post Purge 07/18/2017 10 Lot A Park SGP‐A‐West‐5 SGP‐A‐West‐5 Post Purge 07/18/2017 ND<10 Lot A Park SGP‐A‐West‐9 SGP‐A‐West‐9 Post Purge 07/18/2017 ND<10 Lot K Street SGP‐09‐5 SGP‐09‐5 Post Purge 06/15/2017 ND<13 Lot K Street SGP‐09‐5 SGP‐09‐5' Pre Pre‐Purge 07/13/2017 ND<10 Lot K Street SGP‐09‐10 SGP‐09‐10' Pre Pre‐Purge 07/13/2017 36 Lot K Street SGP‐10‐5 SGP‐10‐5 Post Purge 06/15/2017 ND<7.5 38,000 Maximum Value: Notes: fbg = feet below grade NP = pre‐purge sample (no purge) Post = post purge sample ppmv = parts per million by volume Pre = pre‐purge sample REP = duplicate ND = not detected above cited laboratory Reporting Limit % = percent ‐‐ = analyte not included in analysis Lot K probes are located on the east side of Heritage Road west of lots 50 through 52 Page 4 of 4 Oxygen (%) ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 6.87 14.3 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 22.0 ‐‐ ‐‐ 24.0 24 Table 5 Soil Gas Mobile Laboratory Analytical Results‐VOCs  Otay Ranch Village 3 Heritage Road, Chula Vista, CA Probe Location Lot 42 Lot 42 Lot 51 Lot 51 Lot 60 Lot 60 Lot 73 Lot 73 Lot 94 Lot 94 Lot 101 Lot 101 Lot 108 Lot 108 Lot 126 Lot 126 Lot 196 Lot 196 Lot 202 Lot 202 Lot 211 Lot 211 Lot 223 Lot 223 Lot 253 Lot 253 Lot 324 Lot 324 Lot 335 Lot 335 Lot 342 Lot 342 Lot 352 Lot 352 Lot 699 Lot 699 Lot 711 Lot 711 Lot 735 Lot 735 Lot 745 Lot 760 Lot 760 Lot 769 Lot 769 Lot 824 Lot 825 Lot 825 Lot 816 Lot 817 Lot 817 Lot 817 Lot Type Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Commercial Commercial Commercial Commercial Probe ID SGP‐42‐5 SGP‐42‐25 SGP‐51‐5 SGP‐51‐25 SGP‐60‐5 SGP‐60‐25 SGP‐73‐5 SGP‐73‐25 SGP‐94‐5 SGP‐94‐25 SGP‐101‐5 SGP‐101‐25 SGP‐108‐5 SGP‐108‐25 SGP‐126‐5 SGP‐126‐25 SGP‐196‐5 SGP‐196‐30 SGP‐202‐5 SGP‐202‐25 SGP‐211‐5 SGP‐211‐25 SGP‐223‐5 SGP‐223‐25 SGP‐253‐5 SGP‐253‐22 SGP‐324‐5 SGP‐324‐25 SGP‐335‐5 SGP‐335‐30 SGP‐342‐5 SGP‐342‐32 SGP‐352‐5 SGP‐352‐25 SGP‐699‐5 SGP‐699‐25 SGP‐711‐5 SGP‐711‐8 SGP‐735‐5 SGP‐735‐15 SGP‐745‐5 SGP‐760‐5 SGP‐760‐20 SGP‐769‐5 SGP‐769‐15 SGP‐824‐5 SGP‐825‐5 SGP‐825‐12 SGP‐816‐3 SGP‐817‐5 SGP‐817‐5 SGP‐817‐10 Sample Name SGP‐42‐5  3PV SGP‐42‐25  3PV SGP‐51‐5  3PV SGP‐51‐25  3PV SGP‐60‐5 SGP‐60‐25 SGP‐73‐5 SGP‐73‐25 SGP‐94‐5  3PV SGP‐94‐25  3PV SGP‐101‐5  3PV SGP‐101‐25  3PV SGP‐108‐5  3PV SGP‐108‐25  3PV SGP‐126‐5  3PV SGP‐126‐25  3PV SGP‐196‐5  3PV SGP‐196‐30  3PV SGP‐202‐5  3PV SGP‐202‐25  3PV SGP‐211‐5  3PV SGP‐211‐25  3PV SGP‐223‐5 SGP‐223‐25 SGP‐253‐5  3PV SGP‐253‐22  3PV SGP‐324‐5 SGP‐324‐25 SGP‐335‐5 SGP‐335‐30 SGP‐342‐5  3PV SGP‐342‐32  3PV SGP‐352‐5 SGP‐352‐25 SGP‐699‐5  3PV SGP‐699‐25  3PV SGP‐711‐5  3PV SGP‐711‐8  3PV SGP‐735‐5  3PV SGP‐735‐15  3PV SGP‐745‐5  3PV SGP‐760‐5  3PV SGP‐760‐20  3PV SGP‐769‐5  3PV SGP‐769‐15  3PV SGP‐824‐5 SGP‐825‐5 SGP‐825‐12 SGP‐816‐3 SGP‐817‐5 SGP‐817‐5 REP SGP‐817‐10  Probe  Depth (fbg) 5 25 5 25 5 25 5 25 5 25 5 25 5 25 5 25 5 30 5 25 5 25 5 25 5 22 5 25 5 30 5 32 5 25 5 25 5 8 5 15 5 5 20 5 15 5 5 12 3 5 5 10 Sample  Date 06/27/2017 06/27/2017 06/27/2017 06/27/2017 07/18/2017 07/18/2017 07/18/2017 07/18/2017 06/27/2017 06/27/2017 06/27/2017 06/27/2017 06/27/2017 06/27/2017 06/27/2017 06/27/2017 06/26/2017 06/26/2017 06/26/2017 06/26/2017 06/26/2017 06/26/2017 07/18/2017 07/18/2017 06/28/2017 06/28/2017 07/18/2017 07/18/2017 07/18/2017 07/18/2017 06/27/2017 06/27/2017 07/18/2017 07/18/2017 06/28/2017 06/28/2017 06/28/2017 06/28/2017 06/26/2017 06/26/2017 06/26/2017 06/26/2017 06/26/2017 06/26/2017 06/26/2017 07/17/2017 07/17/2017 07/17/2017 07/17/2017 07/17/2017 07/17/2017 07/17/2017 1,1,1,2‐ Tetrachloro‐ ethane 1,1,1‐ Trichloro‐ ethane 1,1,2,2‐ Tetrachloro‐ ethane 1,1,2‐ Trichloro‐ ethane 1,1,2‐ Trichloro‐ trifluoro‐ ethane (ug/m3) ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<20 ND<20 ND<100 ND<100 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 (ug/m3) ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<20 ND<20 ND<100 ND<100 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 (ug/m3) ND<24 ND<24 ND<24 ND<24 ND<100 ND<100 ND<100 ND<100 ND<24 ND<24 ND<24 ND<24 ND<24 ND<24 ND<24 ND<24 ND<24 ND<24 ND<24 ND<24 ND<24 ND<24 ND<100 ND<100 ND<24 ND<24 ND<100 ND<100 ND<100 ND<100 ND<24 ND<24 ND<100 ND<100 ND<24 ND<24 ND<24 ND<24 ND<24 ND<24 ND<24 ND<24 ND<24 ND<24 ND<24 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 (ug/m3) ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<20 ND<20 ND<100 ND<100 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 (ug/m3) ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<20 ND<20 ND<100 ND<100 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 Page 1 of 10 1,2,3‐ 1,1‐Dichloro‐ 1,1‐Dichloro‐ 1,1‐Dichloro‐ Trichloro‐ ethane ethene propene benzene (ug/m3) ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<20 ND<20 ND<100 ND<100 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 (ug/m3) ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<20 ND<20 ND<100 ND<100 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 (ug/m3) ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<20 ND<20 ND<100 ND<100 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 (ug/m3) ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<20 ND<20 ND<100 ND<100 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 1,2,3‐ Trichloro‐ propane 1,2,4‐ Trichloro‐ benzene (ug/m3) ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<20 ND<20 ND<100 ND<100 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 (ug/m3) ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<20 ND<20 ND<100 ND<100 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 1,2,4‐ 1,2‐Dibromo‐ Trimethyl‐ 3‐chloro‐ 1,2‐Dibromo‐ 1,2‐Dichloro‐ benzene ethane benzene propane (ug/m3) 200 280 190 80 800 160 120 420 60 50 150 100 100 40 480 260 50 140 70 90 90 120 280 ND<100 410 40 110 ND<100 260 370 80 10 (J) 260 240 450 280 10 (J) ND<20 10 (J) 10 (J) 220 60 70 70 30 160 140 80 (J) 70 (J) 130 110 80 (J) (ug/m3) ND<45 ND<45 ND<45 ND<45 ND<1,000 ND<1,000 ND<1,000 ND<1,000 ND<45 ND<45 ND<45 ND<45 ND<45 ND<45 ND<45 ND<45 ND<45 ND<45 ND<45 ND<45 ND<45 ND<45 ND<1,000 ND<1,000 ND<45 ND<45 ND<1,000 ND<1,000 ND<1,000 ND<1,000 ND<45 ND<45 ND<1,000 ND<1,000 ND<45 ND<45 ND<45 ND<45 ND<45 ND<45 ND<45 ND<45 ND<45 ND<45 ND<45 ND<1,000 ND<1,000 ND<1,000 ND<1,000 ND<1,000 ND<1,000 ND<1,000 (ug/m3) ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<20 ND<20 ND<100 ND<100 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 (ug/m3) ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<20 ND<20 ND<100 ND<100 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 Table 5 Soil Gas Mobile Laboratory Analytical Results‐VOCs  Otay Ranch Village 3 Heritage Road, Chula Vista, CA Probe Location Lot Type Probe ID Sample Name  Probe  Depth (fbg) Lot 818 Lot 818 Lot 814 Lot 814 Lot 814 Lot 814 Lot 814 Lot 814 Lot 814 Lot 814 Lot 814 Lot 814 Lot 814 Lot 814 Lot 814 Lot 814 Lot 814 Lot 814 Lot 815 Lot 815 Lot 815 Lot 815 Lot 815 Lot 815 Lot 815 Lot 815 Lot 815 Lot 815 Lot 815 Lot 815 Lot A Lot A Lot A Lot A Lot A Lot K Lot K Lot K Lot K Lot K Lot K Lot K Lot K Lot K Lot K Lot K Lot K Commercial Commercial School School School School School School School School School School School School School School School School School School School School School School School School School School School School School School School School School Street Street Street Street Street Street Street Street Street Street Street Street SGP‐818‐5 SGP‐818‐10 SGP‐01‐5 SGP‐01‐5 SGP‐02‐5 SGP‐02‐5 SGP‐03‐5 SGP‐03‐5 SGP‐01‐10 SGP‐01‐10 SGP‐02‐15 SGP‐02‐15 SGP‐03‐15 SGP‐03‐15 SGP‐03‐23 SGP‐03‐23 SGP‐02‐32 SGP‐02‐32 SGP‐04‐5 SGP‐04‐5 SGP‐05‐5 SGP‐05‐5 SGP‐06‐5 SGP‐06‐5 SGP‐07‐5 SGP‐07‐5 SGP‐04‐13 SGP‐04‐13 SGP‐05‐13 SGP‐05‐13 SGP‐A‐East‐5 SGP‐A‐East‐5 SGP‐A‐West‐5 SGP‐A‐West‐9 SGP‐A‐East‐20 SGP‐08‐5 SGP‐08‐5 SGP‐09‐5 SGP‐09‐5 SGP‐10‐5 SGP‐10‐5 SGP‐08‐10 SGP‐08‐10 SGP‐09‐10 SGP‐09‐10 SGP‐10‐10 SGP‐10‐10 SGP‐818‐5 SGP‐818‐10 SGP‐01‐5  3PV SGP‐01‐5  3PV SGP‐02‐5  3PV SGP‐02‐5  3PV SGP‐03‐5  3PV SGP‐03‐5  3PV SGP‐01‐10  3PV SGP‐01‐10  3PV SGP‐02‐15  3PV SGP‐02‐15  3PV SGP‐03‐15  3PV SGP‐03‐15  3PV SGP‐03‐23  3PV SGP‐03‐23  3PV SGP‐02‐32  3PV SGP‐02‐32  3PV SGP‐04‐5  3PV SGP‐04‐5  3PV SGP‐05‐5  3PV SGP‐05‐5  3PV SGP‐06‐5  3PV SGP‐06‐5  3PV SGP‐07‐5  3PV SGP‐07‐5  3PV SGP‐04‐13  3PV SGP‐04‐13  3PV SGP‐05‐13  3PV SGP‐05‐13  3PV SGP‐A‐East‐5 SGP‐A‐East‐5 REP SGP‐A‐West‐5 SGP‐A‐West‐9 SGP‐A‐East‐20 SGP‐08‐5  3PV SGP‐08‐5  3PV SGP‐09‐5  3PV SGP‐09‐5  3PV SGP‐10‐5  3PV SGP‐10‐5  3PV SGP‐08‐10  3PV SGP‐08‐10  3PV SGP‐09‐10  3PV SGP‐09‐10  3PV SGP‐10‐10  3PV SGP‐10‐10  3PV 5 10 5 5 5 5 5 5 10 10 15 15 15 15 23 23 32 32 5 5 5 5 5 5 5 5 13 13 13 13 5 5 5 9 20 5 5 5 5 5 5 10 10 10 10 10 10 Notes: fbg = feet below grade 3 ug/m  = micrograms per cubic meter ND = not detected above cited laboratory Reporting Limit Sample  Date 07/17/2017 07/17/2017 06/07/2017 06/08/2017 06/08/2017 06/08/2017 06/07/2017 06/07/2017 06/08/2017 06/08/2017 06/08/2017 06/08/2017 06/07/2017 06/07/2017 06/07/2017 06/08/2017 06/08/2017 06/08/2017 06/07/2017 06/07/2017 06/07/2017 06/07/2017 06/07/2017 06/07/2017 06/07/2017 06/07/2017 06/07/2017 06/07/2017 06/07/2017 06/07/2017 07/18/2017 07/18/2017 07/18/2017 07/18/2017 07/18/2017 06/08/2017 06/08/2017 06/08/2017 06/08/2017 06/08/2017 06/08/2017 06/08/2017 06/08/2017 06/08/2017 06/08/2017 06/08/2017 06/08/2017 Maximum Result 1,1,1,2‐ Tetrachloro‐ ethane (ug/m3) ND<100 ND<100 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<100 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND 1,1,1‐ Trichloro‐ ethane 1,1,2,2‐ Tetrachloro‐ ethane 1,1,2‐ Trichloro‐ ethane 1,1,2‐ Trichloro‐ trifluoro‐ ethane 1,2,3‐ 1,1‐Dichloro‐ 1,1‐Dichloro‐ 1,1‐Dichloro‐ Trichloro‐ ethane ethene propene benzene 1,2,3‐ Trichloro‐ propane 1,2,4‐ Trichloro‐ benzene (ug/m3) (ug/m3) (ug/m3) (ug/m3) (ug/m3) (ug/m3) (ug/m3) (ug/m3) (ug/m3) (ug/m3) ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<20 ND<24 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<24 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<24 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<24 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<24 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<24 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<24 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<24 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<24 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<24 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<24 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<24 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<24 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<24 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<24 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<24 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<24 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<24 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<24 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<24 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<24 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<24 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<24 ND<20 ND<20 40 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<24 ND<20 ND<20 40 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<24 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<24 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<24 ND<20 ND<20 110 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<24 ND<20 ND<20 110 ND<20 ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<20 ND<24 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<24 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<24 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<24 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<24 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<24 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<24 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<24 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<24 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<24 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<24 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<24 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND ND ND ND 110 ND ND ND ND ND J = analyte detected at a concentration below the laboratory Reporting Limit; therefore, the result is an estimated concentration B‐03 = analyte present in the blank above the reported MDL but below the reporting limit ‐‐ = analyte not included in analysis Lot K probes are located on the east side of Heritage Road west of lots 50 through 52 Page 2 of 10 1,2,4‐ 1,2‐Dibromo‐ Trimethyl‐ 3‐chloro‐ 1,2‐Dibromo‐ 1,2‐Dichloro‐ benzene ethane benzene propane (ug/m3) 160 150 270 430 740 690 380 610 1,400 1,800 410 600 200 250 160 310 850 1,200 620 890 230 400 20 50 200 320 60 80 60 80 50 (J) ND<100 60 (J) 60 (J) 320 380 450 370 1,200 210 820 110 140 280 190 810 610 1,800 (ug/m3) ND<1,000 ND<1,000 ND<45 ND<45 ND<45 ND<45 ND<45 ND<45 ND<45 ND<45 ND<45 ND<45 ND<45 ND<45 ND<45 ND<45 ND<45 ND<45 ND<45 ND<45 ND<45 ND<45 ND<45 ND<45 ND<45 ND<45 ND<45 ND<45 ND<45 ND<45 ND<1,000 ND<1,000 ND<1,000 ND<1,000 ND<1,000 ND<45 ND<45 ND<45 ND<45 ND<45 ND<45 ND<45 ND<45 ND<45 ND<45 ND<45 ND<45 ND (ug/m3) ND<100 ND<100 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<100 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND (ug/m3) ND<100 ND<100 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<100 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND Table 5 Soil Gas Mobile Laboratory Analytical Results‐VOCs  Otay Ranch Village 3 Heritage Road, Chula Vista, CA Probe Location Lot 42 Lot 42 Lot 51 Lot 51 Lot 60 Lot 60 Lot 73 Lot 73 Lot 94 Lot 94 Lot 101 Lot 101 Lot 108 Lot 108 Lot 126 Lot 126 Lot 196 Lot 196 Lot 202 Lot 202 Lot 211 Lot 211 Lot 223 Lot 223 Lot 253 Lot 253 Lot 324 Lot 324 Lot 335 Lot 335 Lot 342 Lot 342 Lot 352 Lot 352 Lot 699 Lot 699 Lot 711 Lot 711 Lot 735 Lot 735 Lot 745 Lot 760 Lot 760 Lot 769 Lot 769 Lot 824 Lot 825 Lot 825 Lot 816 Lot 817 Lot 817 Lot 817 Lot Type Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Commercial Commercial Commercial Commercial Probe ID SGP‐42‐5 SGP‐42‐25 SGP‐51‐5 SGP‐51‐25 SGP‐60‐5 SGP‐60‐25 SGP‐73‐5 SGP‐73‐25 SGP‐94‐5 SGP‐94‐25 SGP‐101‐5 SGP‐101‐25 SGP‐108‐5 SGP‐108‐25 SGP‐126‐5 SGP‐126‐25 SGP‐196‐5 SGP‐196‐30 SGP‐202‐5 SGP‐202‐25 SGP‐211‐5 SGP‐211‐25 SGP‐223‐5 SGP‐223‐25 SGP‐253‐5 SGP‐253‐22 SGP‐324‐5 SGP‐324‐25 SGP‐335‐5 SGP‐335‐30 SGP‐342‐5 SGP‐342‐32 SGP‐352‐5 SGP‐352‐25 SGP‐699‐5 SGP‐699‐25 SGP‐711‐5 SGP‐711‐8 SGP‐735‐5 SGP‐735‐15 SGP‐745‐5 SGP‐760‐5 SGP‐760‐20 SGP‐769‐5 SGP‐769‐15 SGP‐824‐5 SGP‐825‐5 SGP‐825‐12 SGP‐816‐3 SGP‐817‐5 SGP‐817‐5 SGP‐817‐10 Sample Name SGP‐42‐5  3PV SGP‐42‐25  3PV SGP‐51‐5  3PV SGP‐51‐25  3PV SGP‐60‐5 SGP‐60‐25 SGP‐73‐5 SGP‐73‐25 SGP‐94‐5  3PV SGP‐94‐25  3PV SGP‐101‐5  3PV SGP‐101‐25  3PV SGP‐108‐5  3PV SGP‐108‐25  3PV SGP‐126‐5  3PV SGP‐126‐25  3PV SGP‐196‐5  3PV SGP‐196‐30  3PV SGP‐202‐5  3PV SGP‐202‐25  3PV SGP‐211‐5  3PV SGP‐211‐25  3PV SGP‐223‐5 SGP‐223‐25 SGP‐253‐5  3PV SGP‐253‐22  3PV SGP‐324‐5 SGP‐324‐25 SGP‐335‐5 SGP‐335‐30 SGP‐342‐5  3PV SGP‐342‐32  3PV SGP‐352‐5 SGP‐352‐25 SGP‐699‐5  3PV SGP‐699‐25  3PV SGP‐711‐5  3PV SGP‐711‐8  3PV SGP‐735‐5  3PV SGP‐735‐15  3PV SGP‐745‐5  3PV SGP‐760‐5  3PV SGP‐760‐20  3PV SGP‐769‐5  3PV SGP‐769‐15  3PV SGP‐824‐5 SGP‐825‐5 SGP‐825‐12 SGP‐816‐3 SGP‐817‐5 SGP‐817‐5 REP SGP‐817‐10  Probe  Depth (fbg) 5 25 5 25 5 25 5 25 5 25 5 25 5 25 5 25 5 30 5 25 5 25 5 25 5 22 5 25 5 30 5 32 5 25 5 25 5 8 5 15 5 5 20 5 15 5 5 12 3 5 5 10 Sample  Date 06/27/2017 06/27/2017 06/27/2017 06/27/2017 07/18/2017 07/18/2017 07/18/2017 07/18/2017 06/27/2017 06/27/2017 06/27/2017 06/27/2017 06/27/2017 06/27/2017 06/27/2017 06/27/2017 06/26/2017 06/26/2017 06/26/2017 06/26/2017 06/26/2017 06/26/2017 07/18/2017 07/18/2017 06/28/2017 06/28/2017 07/18/2017 07/18/2017 07/18/2017 07/18/2017 06/27/2017 06/27/2017 07/18/2017 07/18/2017 06/28/2017 06/28/2017 06/28/2017 06/28/2017 06/26/2017 06/26/2017 06/26/2017 06/26/2017 06/26/2017 06/26/2017 06/26/2017 07/17/2017 07/17/2017 07/17/2017 07/17/2017 07/17/2017 07/17/2017 07/17/2017 1,3,5‐ 1,2‐Dichloro‐ 1,2‐Dichloro‐ Trimethyl‐ 1,3‐Dichloro‐ 1,3‐Dichloro‐ 1,4‐Dichloro‐ 2,2‐Dichloro‐ 2‐Chloro‐ ethane propane benzene benzene propane benzene propane toluene 3 (ug/m ) ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 3 (ug/m ) ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<20 ND<20 ND<100 ND<100 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 3 (ug/m ) 80 110 80 40 300 60 (J) ND<100 170 20 20 70 50 40 10 (J) 240 120 10 (J) 70 20 40 40 50 100 (J) ND<100 190 20 60 (J) ND<100 80 (J) 150 30 ND<20 70 (J) 90 (J) 210 140 ND<20 ND<20 ND<20 ND<20 80 20 30 30 10 (J) 60 (J) ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 3 (ug/m ) ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<20 ND<20 ND<100 ND<100 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 Page 3 of 10 3 (ug/m ) ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<20 ND<20 ND<100 ND<100 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 3 (ug/m ) ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<20 ND<20 ND<100 ND<100 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 3 (ug/m ) ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<20 ND<20 ND<100 ND<100 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 3 (ug/m ) ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<20 ND<20 ND<100 ND<100 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 4‐Chloro‐ toluene 3 (ug/m ) ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<20 ND<20 ND<100 ND<100 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 Benzene Bromo‐ benzene Bromo‐ chloro‐ methane Bromo‐ dichloro‐ methane (ug/m3) 20 40 60 20 30 ND<20 10 (J) 70 20 30 30 30 ND<20 10 (J) 100 130 ND<20 40 ND<20 20 ND<20 50 10 (J) 20 (J) 60 10 (J) 30 10 (J) 40 140 20 ND<20 20 (J) 30 100 90 ND<20 ND<20 ND<20 ND<20 40 ND<20 20 20 ND<20 10 (B‐03, J) 10 (B‐03, J) 10 (B‐03, J) 20 (B‐03, J) 10 (B‐03, J) 20 (B‐03, J) 20 (B‐03, J) (ug/m3) ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<20 ND<20 ND<100 ND<100 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 (ug/m3) ND<90 ND<90 ND<90 ND<90 ND<100 ND<100 ND<100 ND<100 ND<90 ND<90 ND<90 ND<90 ND<90 ND<90 ND<90 ND<90 ND<90 ND<90 ND<90 ND<90 ND<90 ND<90 ND<100 ND<100 ND<90 ND<90 ND<100 ND<100 ND<100 ND<100 ND<90 ND<90 ND<100 ND<100 ND<90 ND<90 ND<90 ND<90 ND<90 ND<90 ND<90 ND<90 ND<90 ND<90 ND<90 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 (ug/m3) ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<20 ND<20 290 110 ND<100 ND<100 ND<20 ND<20 ND<100 ND<100 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 Table 5 Soil Gas Mobile Laboratory Analytical Results‐VOCs  Otay Ranch Village 3 Heritage Road, Chula Vista, CA Probe Location Lot Type Lot 818 Lot 818 Lot 814 Lot 814 Lot 814 Lot 814 Lot 814 Lot 814 Lot 814 Lot 814 Lot 814 Lot 814 Lot 814 Lot 814 Lot 814 Lot 814 Lot 814 Lot 814 Lot 815 Lot 815 Lot 815 Lot 815 Lot 815 Lot 815 Lot 815 Lot 815 Lot 815 Lot 815 Lot 815 Lot 815 Lot A Lot A Lot A Lot A Lot A Lot K Lot K Lot K Lot K Lot K Lot K Lot K Lot K Lot K Lot K Lot K Lot K Commercial Commercial School School School School School School School School School School School School School School School School School School School School School School School School School School School School School School School School School Street Street Street Street Street Street Street Street Street Street Street Street Probe ID Sample Name  Probe  Depth (fbg) SGP‐818‐5 SGP‐818‐10 SGP‐01‐5 SGP‐01‐5 SGP‐02‐5 SGP‐02‐5 SGP‐03‐5 SGP‐03‐5 SGP‐01‐10 SGP‐01‐10 SGP‐02‐15 SGP‐02‐15 SGP‐03‐15 SGP‐03‐15 SGP‐03‐23 SGP‐03‐23 SGP‐02‐32 SGP‐02‐32 SGP‐04‐5 SGP‐04‐5 SGP‐05‐5 SGP‐05‐5 SGP‐06‐5 SGP‐06‐5 SGP‐07‐5 SGP‐07‐5 SGP‐04‐13 SGP‐04‐13 SGP‐05‐13 SGP‐05‐13 SGP‐A‐East‐5 SGP‐A‐East‐5 SGP‐A‐West‐5 SGP‐A‐West‐9 SGP‐A‐East‐20 SGP‐08‐5 SGP‐08‐5 SGP‐09‐5 SGP‐09‐5 SGP‐10‐5 SGP‐10‐5 SGP‐08‐10 SGP‐08‐10 SGP‐09‐10 SGP‐09‐10 SGP‐10‐10 SGP‐10‐10 SGP‐818‐5 SGP‐818‐10 SGP‐01‐5  3PV SGP‐01‐5  3PV SGP‐02‐5  3PV SGP‐02‐5  3PV SGP‐03‐5  3PV SGP‐03‐5  3PV SGP‐01‐10  3PV SGP‐01‐10  3PV SGP‐02‐15  3PV SGP‐02‐15  3PV SGP‐03‐15  3PV SGP‐03‐15  3PV SGP‐03‐23  3PV SGP‐03‐23  3PV SGP‐02‐32  3PV SGP‐02‐32  3PV SGP‐04‐5  3PV SGP‐04‐5  3PV SGP‐05‐5  3PV SGP‐05‐5  3PV SGP‐06‐5  3PV SGP‐06‐5  3PV SGP‐07‐5  3PV SGP‐07‐5  3PV SGP‐04‐13  3PV SGP‐04‐13  3PV SGP‐05‐13  3PV SGP‐05‐13  3PV SGP‐A‐East‐5 SGP‐A‐East‐5 REP SGP‐A‐West‐5 SGP‐A‐West‐9 SGP‐A‐East‐20 SGP‐08‐5  3PV SGP‐08‐5  3PV SGP‐09‐5  3PV SGP‐09‐5  3PV SGP‐10‐5  3PV SGP‐10‐5  3PV SGP‐08‐10  3PV SGP‐08‐10  3PV SGP‐09‐10  3PV SGP‐09‐10  3PV SGP‐10‐10  3PV SGP‐10‐10  3PV 5 10 5 5 5 5 5 5 10 10 15 15 15 15 23 23 32 32 5 5 5 5 5 5 5 5 13 13 13 13 5 5 5 9 20 5 5 5 5 5 5 10 10 10 10 10 10 Notes: fbg = feet below grade ug/m3 = micrograms per cubic meter ND = not detected above cited laboratory Reporting Limit Sample  Date 07/17/2017 07/17/2017 06/07/2017 06/08/2017 06/08/2017 06/08/2017 06/07/2017 06/07/2017 06/08/2017 06/08/2017 06/08/2017 06/08/2017 06/07/2017 06/07/2017 06/07/2017 06/08/2017 06/08/2017 06/08/2017 06/07/2017 06/07/2017 06/07/2017 06/07/2017 06/07/2017 06/07/2017 06/07/2017 06/07/2017 06/07/2017 06/07/2017 06/07/2017 06/07/2017 07/18/2017 07/18/2017 07/18/2017 07/18/2017 07/18/2017 06/08/2017 06/08/2017 06/08/2017 06/08/2017 06/08/2017 06/08/2017 06/08/2017 06/08/2017 06/08/2017 06/08/2017 06/08/2017 06/08/2017 Maximum Result 1,3,5‐ 1,2‐Dichloro‐ 1,2‐Dichloro‐ Trimethyl‐ 1,3‐Dichloro‐ 1,3‐Dichloro‐ 1,4‐Dichloro‐ 2,2‐Dichloro‐ 2‐Chloro‐ ethane propane benzene benzene propane benzene propane toluene 3 (ug/m ) ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND 3 3 3 3 3 3 3 Benzene Bromo‐ benzene (ug/m ) (ug/m ) (ug/m ) (ug/m ) (ug/m ) (ug/m ) (ug/m ) (ug/m ) (ug/m3) (ug/m3) ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 30 (B‐03) ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 30 (B‐03) ND<100 ND<20 100 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 50 ND<20 ND<20 160 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 50 ND<20 ND<20 200 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 10 (J) ND<20 ND<20 180 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 20 ND<20 ND<20 130 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 180 ND<20 ND<20 230 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 140 ND<20 ND<20 660 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 210 ND<20 ND<20 880 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 140 ND<20 ND<20 150 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 90 ND<20 ND<20 190 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 30 ND<20 ND<20 70 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 100 ND<20 ND<20 90 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 100 ND<20 ND<20 60 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 110 ND<20 ND<20 110 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 100 ND<20 ND<20 340 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 330 ND<20 ND<20 460 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 290 ND<20 ND<20 230 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 80 ND<20 ND<20 370 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 60 ND<20 70 ND<20 ND<20 80 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 170 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 140 ND<20 ND<20 10 (J) ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 30 ND<20 ND<20 20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 90 ND<20 ND<20 70 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 100 ND<20 ND<20 130 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 100 ND<20 ND<20 20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 30 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 80 ND<20 ND<20 30 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 80 ND<20 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 10 (J) ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<20 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<20 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 10 (J) ND<100 ND<100 100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 30 ND<100 ND<20 150 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 190 ND<20 ND<20 180 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 200 ND<20 ND<20 150 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 220 ND<20 ND<20 450 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 170 ND<20 ND<20 70 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 40 ND<20 ND<20 290 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 50 ND<20 ND<20 40 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 80 ND<20 ND<20 50 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 80 ND<20 220 ND<20 ND<20 150 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 70 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 40 ND<20 ND<20 300 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 60 ND<20 ND<20 190 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 40 ND<20 ND 880 ND ND ND ND ND ND 330 ND J = analyte detected at a concentration below the laboratory Reporting Limit; therefore, the result is an estimated concentration B‐03 = analyte present in the blank above the reported MDL but below the reporting limit ‐‐ = analyte not included in analysis Lot K probes are located on the east side of Heritage Road west of lots 50 through 52 Page 4 of 10 3 4‐Chloro‐ toluene Bromo‐ chloro‐ methane Bromo‐ dichloro‐ methane (ug/m3) ND<100 ND<100 ND<90 ND<90 ND<90 ND<90 ND<90 ND<90 ND<90 ND<90 ND<90 ND<90 ND<90 ND<90 ND<90 ND<90 ND<90 ND<90 ND<90 ND<90 ND<90 ND<90 ND<90 ND<90 ND<90 ND<90 ND<90 ND<90 ND<90 ND<90 ND<100 ND<100 ND<100 ND<100 ND<100 ND<90 ND<90 ND<90 ND<90 ND<90 ND<90 ND<90 ND<90 ND<90 ND<90 ND<90 ND<90 ND (ug/m3) ND<100 ND<100 20 40 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<100 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 290 Table 5 Soil Gas Mobile Laboratory Analytical Results‐VOCs  Otay Ranch Village 3 Heritage Road, Chula Vista, CA Probe Location Lot 42 Lot 42 Lot 51 Lot 51 Lot 60 Lot 60 Lot 73 Lot 73 Lot 94 Lot 94 Lot 101 Lot 101 Lot 108 Lot 108 Lot 126 Lot 126 Lot 196 Lot 196 Lot 202 Lot 202 Lot 211 Lot 211 Lot 223 Lot 223 Lot 253 Lot 253 Lot 324 Lot 324 Lot 335 Lot 335 Lot 342 Lot 342 Lot 352 Lot 352 Lot 699 Lot 699 Lot 711 Lot 711 Lot 735 Lot 735 Lot 745 Lot 760 Lot 760 Lot 769 Lot 769 Lot 824 Lot 825 Lot 825 Lot 816 Lot 817 Lot 817 Lot 817 Lot Type Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Commercial Commercial Commercial Commercial Probe ID SGP‐42‐5 SGP‐42‐25 SGP‐51‐5 SGP‐51‐25 SGP‐60‐5 SGP‐60‐25 SGP‐73‐5 SGP‐73‐25 SGP‐94‐5 SGP‐94‐25 SGP‐101‐5 SGP‐101‐25 SGP‐108‐5 SGP‐108‐25 SGP‐126‐5 SGP‐126‐25 SGP‐196‐5 SGP‐196‐30 SGP‐202‐5 SGP‐202‐25 SGP‐211‐5 SGP‐211‐25 SGP‐223‐5 SGP‐223‐25 SGP‐253‐5 SGP‐253‐22 SGP‐324‐5 SGP‐324‐25 SGP‐335‐5 SGP‐335‐30 SGP‐342‐5 SGP‐342‐32 SGP‐352‐5 SGP‐352‐25 SGP‐699‐5 SGP‐699‐25 SGP‐711‐5 SGP‐711‐8 SGP‐735‐5 SGP‐735‐15 SGP‐745‐5 SGP‐760‐5 SGP‐760‐20 SGP‐769‐5 SGP‐769‐15 SGP‐824‐5 SGP‐825‐5 SGP‐825‐12 SGP‐816‐3 SGP‐817‐5 SGP‐817‐5 SGP‐817‐10 Sample Name SGP‐42‐5  3PV SGP‐42‐25  3PV SGP‐51‐5  3PV SGP‐51‐25  3PV SGP‐60‐5 SGP‐60‐25 SGP‐73‐5 SGP‐73‐25 SGP‐94‐5  3PV SGP‐94‐25  3PV SGP‐101‐5  3PV SGP‐101‐25  3PV SGP‐108‐5  3PV SGP‐108‐25  3PV SGP‐126‐5  3PV SGP‐126‐25  3PV SGP‐196‐5  3PV SGP‐196‐30  3PV SGP‐202‐5  3PV SGP‐202‐25  3PV SGP‐211‐5  3PV SGP‐211‐25  3PV SGP‐223‐5 SGP‐223‐25 SGP‐253‐5  3PV SGP‐253‐22  3PV SGP‐324‐5 SGP‐324‐25 SGP‐335‐5 SGP‐335‐30 SGP‐342‐5  3PV SGP‐342‐32  3PV SGP‐352‐5 SGP‐352‐25 SGP‐699‐5  3PV SGP‐699‐25  3PV SGP‐711‐5  3PV SGP‐711‐8  3PV SGP‐735‐5  3PV SGP‐735‐15  3PV SGP‐745‐5  3PV SGP‐760‐5  3PV SGP‐760‐20  3PV SGP‐769‐5  3PV SGP‐769‐15  3PV SGP‐824‐5 SGP‐825‐5 SGP‐825‐12 SGP‐816‐3 SGP‐817‐5 SGP‐817‐5 REP SGP‐817‐10  Probe  Depth (fbg) 5 25 5 25 5 25 5 25 5 25 5 25 5 25 5 25 5 30 5 25 5 25 5 25 5 22 5 25 5 30 5 32 5 25 5 25 5 8 5 15 5 5 20 5 15 5 5 12 3 5 5 10 Sample  Date 06/27/2017 06/27/2017 06/27/2017 06/27/2017 07/18/2017 07/18/2017 07/18/2017 07/18/2017 06/27/2017 06/27/2017 06/27/2017 06/27/2017 06/27/2017 06/27/2017 06/27/2017 06/27/2017 06/26/2017 06/26/2017 06/26/2017 06/26/2017 06/26/2017 06/26/2017 07/18/2017 07/18/2017 06/28/2017 06/28/2017 07/18/2017 07/18/2017 07/18/2017 07/18/2017 06/27/2017 06/27/2017 07/18/2017 07/18/2017 06/28/2017 06/28/2017 06/28/2017 06/28/2017 06/26/2017 06/26/2017 06/26/2017 06/26/2017 06/26/2017 06/26/2017 06/26/2017 07/17/2017 07/17/2017 07/17/2017 07/17/2017 07/17/2017 07/17/2017 07/17/2017 Bromoform 3 (ug/m ) ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<20 ND<20 ND<100 ND<100 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 Bromo‐ methane 3 (ug/m ) ND<150 ND<150 ND<150 ND<150 ND<100 ND<100 ND<100 ND<100 ND<150 ND<150 ND<150 ND<150 ND<150 ND<150 ND<150 ND<150 ND<150 ND<150 ND<150 ND<150 ND<150 ND<150 ND<100 ND<100 ND<150 ND<150 ND<100 ND<100 ND<100 ND<100 ND<150 ND<150 ND<100 ND<100 ND<150 ND<150 ND<150 ND<150 ND<150 ND<150 ND<150 ND<150 ND<150 ND<150 ND<150 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 Carbon  disulfide 3 (ug/m ) ND<20 ND<20 ND<20 160 ND<100 ND<100 ND<100 ND<100 ND<20 140 ND<20 ND<20 ND<20 ND<20 ND<20 60 ND<20 50 ND<20 160 ND<20 170 ND<100 ND<100 90 90 ND<100 ND<100 ND<100 70 (J) ND<20 ND<20 ND<100 ND<100 70 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 Carbon tetra‐ Chloro‐ chloride benzene 3 (ug/m ) ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 Page 5 of 10 3 (ug/m ) ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 Chloro‐ ethane 3 (ug/m ) ND<21 ND<21 ND<21 ND<21 ND<100 ND<100 ND<100 ND<100 ND<21 ND<21 ND<21 ND<21 ND<21 ND<21 ND<21 ND<21 ND<21 ND<21 ND<21 ND<21 ND<21 ND<21 ND<100 ND<100 ND<21 ND<21 ND<100 ND<100 ND<100 ND<100 ND<21 ND<21 ND<100 ND<100 ND<21 ND<21 ND<21 ND<21 ND<21 ND<21 ND<21 ND<21 ND<21 ND<21 ND<21 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 Chloroform Chloro‐ methane cis‐1,2‐ Dichloro‐ ethene cis‐1,3‐ Dichloro‐ propene Dibromo‐ chloro‐ methane Dibromo‐ methane Dichloro‐ difluoro‐ methane (ug/m3) ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 20 (J) ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 60 30 ND<20 ND<20 430 230 ND<20 ND<20 ND<20 10 (J) ND<20 10 (J) ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 30 10 (J) ND<20 ND<20 ND<20 ND<20 (ug/m3) ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<20 ND<20 ND<100 ND<100 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 (ug/m3) ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<20 ND<20 ND<100 ND<100 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 (ug/m3) ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<20 ND<20 ND<100 ND<100 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 (ug/m3) ND<90 ND<90 ND<90 ND<90 ND<100 ND<100 ND<100 ND<100 ND<90 ND<90 ND<90 ND<90 ND<90 ND<90 ND<90 ND<90 ND<90 ND<90 ND<90 ND<90 ND<90 ND<90 ND<100 ND<100 ND<90 ND<90 190 70 (J) ND<100 ND<100 ND<90 ND<90 ND<100 ND<100 ND<90 ND<90 ND<90 ND<90 ND<90 ND<90 ND<90 ND<90 ND<90 ND<90 ND<90 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 (ug/m3) ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<20 ND<20 ND<100 ND<100 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 (ug/m3) ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<20 ND<20 ND<100 ND<100 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 Table 5 Soil Gas Mobile Laboratory Analytical Results‐VOCs  Otay Ranch Village 3 Heritage Road, Chula Vista, CA Probe Location Lot Type Lot 818 Lot 818 Lot 814 Lot 814 Lot 814 Lot 814 Lot 814 Lot 814 Lot 814 Lot 814 Lot 814 Lot 814 Lot 814 Lot 814 Lot 814 Lot 814 Lot 814 Lot 814 Lot 815 Lot 815 Lot 815 Lot 815 Lot 815 Lot 815 Lot 815 Lot 815 Lot 815 Lot 815 Lot 815 Lot 815 Lot A Lot A Lot A Lot A Lot A Lot K Lot K Lot K Lot K Lot K Lot K Lot K Lot K Lot K Lot K Lot K Lot K Commercial Commercial School School School School School School School School School School School School School School School School School School School School School School School School School School School School School School School School School Street Street Street Street Street Street Street Street Street Street Street Street Probe ID Sample Name  Probe  Depth (fbg) SGP‐818‐5 SGP‐818‐10 SGP‐01‐5 SGP‐01‐5 SGP‐02‐5 SGP‐02‐5 SGP‐03‐5 SGP‐03‐5 SGP‐01‐10 SGP‐01‐10 SGP‐02‐15 SGP‐02‐15 SGP‐03‐15 SGP‐03‐15 SGP‐03‐23 SGP‐03‐23 SGP‐02‐32 SGP‐02‐32 SGP‐04‐5 SGP‐04‐5 SGP‐05‐5 SGP‐05‐5 SGP‐06‐5 SGP‐06‐5 SGP‐07‐5 SGP‐07‐5 SGP‐04‐13 SGP‐04‐13 SGP‐05‐13 SGP‐05‐13 SGP‐A‐East‐5 SGP‐A‐East‐5 SGP‐A‐West‐5 SGP‐A‐West‐9 SGP‐A‐East‐20 SGP‐08‐5 SGP‐08‐5 SGP‐09‐5 SGP‐09‐5 SGP‐10‐5 SGP‐10‐5 SGP‐08‐10 SGP‐08‐10 SGP‐09‐10 SGP‐09‐10 SGP‐10‐10 SGP‐10‐10 SGP‐818‐5 SGP‐818‐10 SGP‐01‐5  3PV SGP‐01‐5  3PV SGP‐02‐5  3PV SGP‐02‐5  3PV SGP‐03‐5  3PV SGP‐03‐5  3PV SGP‐01‐10  3PV SGP‐01‐10  3PV SGP‐02‐15  3PV SGP‐02‐15  3PV SGP‐03‐15  3PV SGP‐03‐15  3PV SGP‐03‐23  3PV SGP‐03‐23  3PV SGP‐02‐32  3PV SGP‐02‐32  3PV SGP‐04‐5  3PV SGP‐04‐5  3PV SGP‐05‐5  3PV SGP‐05‐5  3PV SGP‐06‐5  3PV SGP‐06‐5  3PV SGP‐07‐5  3PV SGP‐07‐5  3PV SGP‐04‐13  3PV SGP‐04‐13  3PV SGP‐05‐13  3PV SGP‐05‐13  3PV SGP‐A‐East‐5 SGP‐A‐East‐5 REP SGP‐A‐West‐5 SGP‐A‐West‐9 SGP‐A‐East‐20 SGP‐08‐5  3PV SGP‐08‐5  3PV SGP‐09‐5  3PV SGP‐09‐5  3PV SGP‐10‐5  3PV SGP‐10‐5  3PV SGP‐08‐10  3PV SGP‐08‐10  3PV SGP‐09‐10  3PV SGP‐09‐10  3PV SGP‐10‐10  3PV SGP‐10‐10  3PV 5 10 5 5 5 5 5 5 10 10 15 15 15 15 23 23 32 32 5 5 5 5 5 5 5 5 13 13 13 13 5 5 5 9 20 5 5 5 5 5 5 10 10 10 10 10 10 Notes: fbg = feet below grade ug/m3 = micrograms per cubic meter ND = not detected above cited laboratory Reporting Limit Sample  Date 07/17/2017 07/17/2017 06/07/2017 06/08/2017 06/08/2017 06/08/2017 06/07/2017 06/07/2017 06/08/2017 06/08/2017 06/08/2017 06/08/2017 06/07/2017 06/07/2017 06/07/2017 06/08/2017 06/08/2017 06/08/2017 06/07/2017 06/07/2017 06/07/2017 06/07/2017 06/07/2017 06/07/2017 06/07/2017 06/07/2017 06/07/2017 06/07/2017 06/07/2017 06/07/2017 07/18/2017 07/18/2017 07/18/2017 07/18/2017 07/18/2017 06/08/2017 06/08/2017 06/08/2017 06/08/2017 06/08/2017 06/08/2017 06/08/2017 06/08/2017 06/08/2017 06/08/2017 06/08/2017 06/08/2017 Maximum Result Bromoform 3 (ug/m ) ND<100 ND<100 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<100 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND Bromo‐ methane 3 Carbon  disulfide Carbon tetra‐ Chloro‐ chloride benzene 3 3 3 Chloroform Chloro‐ methane cis‐1,2‐ Dichloro‐ ethene cis‐1,3‐ Dichloro‐ propene Dibromo‐ chloro‐ methane (ug/m ) (ug/m ) (ug/m ) (ug/m ) (ug/m ) (ug/m3) (ug/m3) (ug/m3) (ug/m3) (ug/m3) ND<100 ND<100 ND<20 ND<20 ND<100 ND<20 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<20 ND<20 ND<100 ND<20 ND<100 ND<100 ND<100 ND<100 ND<150 ND<20 ND<20 ND<20 ND<21 110 ND<20 ND<20 ND<20 ND<90 ND<150 ND<20 ND<20 ND<20 ND<21 170 ND<20 ND<20 ND<20 ND<90 ND<150 ND<20 ND<20 ND<20 ND<21 ND<20 ND<20 ND<20 ND<20 ND<90 ND<150 ND<20 ND<20 ND<20 ND<21 ND<20 ND<20 ND<20 ND<20 ND<90 ND<150 ND<20 ND<20 ND<20 ND<21 10 (J) ND<20 ND<20 ND<20 ND<90 ND<150 ND<20 ND<20 ND<20 ND<21 ND<20 ND<20 ND<20 ND<20 ND<90 ND<150 ND<20 ND<20 ND<20 ND<21 100 ND<20 ND<20 ND<20 ND<90 ND<150 ND<20 ND<20 ND<20 ND<21 150 ND<20 ND<20 ND<20 ND<90 ND<150 ND<20 ND<20 ND<20 ND<21 ND<20 ND<20 ND<20 ND<20 ND<90 ND<150 ND<20 ND<20 ND<20 ND<21 ND<20 ND<20 ND<20 ND<20 ND<90 ND<150 40 ND<20 ND<20 ND<21 ND<20 ND<20 ND<20 ND<20 ND<90 ND<150 ND<20 ND<20 ND<20 ND<21 ND<20 ND<20 ND<20 ND<20 ND<90 ND<150 ND<20 ND<20 ND<20 ND<21 ND<20 ND<20 ND<20 ND<20 ND<90 ND<150 ND<20 ND<20 ND<20 ND<21 ND<20 ND<20 ND<20 ND<20 ND<90 ND<150 60 ND<20 ND<20 ND<21 ND<20 ND<20 ND<20 ND<20 ND<90 ND<150 ND<20 ND<20 ND<20 ND<21 ND<20 ND<20 ND<20 ND<20 ND<90 ND<150 ND<20 ND<20 ND<20 ND<21 ND<20 ND<20 ND<20 ND<20 ND<90 ND<150 ND<20 ND<20 ND<20 ND<21 ND<20 ND<20 ND<20 ND<20 ND<90 ND<150 ND<20 ND<20 ND<20 ND<21 ND<20 ND<20 ND<20 ND<20 ND<90 ND<150 ND<20 ND<20 ND<20 ND<21 ND<20 ND<20 ND<20 ND<20 ND<90 ND<150 ND<20 ND<20 ND<20 ND<21 ND<20 ND<20 ND<20 ND<20 ND<90 ND<150 ND<20 ND<20 ND<20 ND<21 ND<20 ND<20 ND<20 ND<20 ND<90 ND<150 ND<20 ND<20 ND<20 ND<21 ND<20 ND<20 20 ND<20 ND<90 ND<150 ND<20 ND<20 ND<20 ND<21 20 ND<20 ND<20 ND<20 ND<90 ND<150 ND<20 ND<20 ND<20 ND<21 ND<20 ND<20 ND<20 ND<20 ND<90 ND<150 ND<20 ND<20 ND<20 ND<21 ND<20 ND<20 ND<20 ND<20 ND<90 ND<150 ND<20 ND<20 ND<20 ND<21 ND<20 ND<20 ND<20 ND<20 ND<90 ND<150 ND<20 ND<20 ND<20 ND<21 ND<20 ND<20 ND<20 ND<20 ND<90 ND<100 ND<100 ND<20 ND<20 ND<100 100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<20 ND<20 ND<100 70 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<20 ND<20 ND<100 ND<20 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<20 ND<20 ND<100 ND<20 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<20 ND<20 ND<100 ND<20 ND<100 ND<100 ND<100 ND<100 ND<150 40 ND<20 ND<20 ND<21 ND<20 ND<20 ND<20 ND<20 ND<90 ND<150 ND<20 ND<20 ND<20 ND<21 ND<20 ND<20 ND<20 ND<20 ND<90 ND<150 120 ND<20 ND<20 ND<21 ND<20 ND<20 ND<20 ND<20 ND<90 ND<150 ND<20 ND<20 ND<20 ND<21 ND<20 ND<20 ND<20 ND<20 ND<90 ND<150 ND<20 ND<20 ND<20 ND<21 10 (J) ND<20 ND<20 ND<20 ND<90 ND<150 ND<20 ND<20 ND<20 ND<21 ND<20 ND<20 ND<20 ND<20 ND<90 ND<150 120 ND<20 ND<20 ND<21 ND<20 ND<20 ND<20 ND<20 ND<90 ND<20 ND<20 ND<21 ND<20 ND<20 ND<20 ND<20 ND<90 ND<150 120 ND<150 110 ND<20 ND<20 ND<21 ND<20 ND<20 ND<20 ND<20 ND<90 ND<150 ND<20 ND<20 ND<20 ND<21 ND<20 ND<20 ND<20 ND<20 ND<90 ND<150 ND<20 ND<20 ND<20 ND<21 ND<20 ND<20 ND<20 ND<20 ND<90 ND<150 ND<20 ND<20 ND<20 ND<21 ND<20 ND<20 ND<20 ND<20 ND<90 ND 170 ND ND ND 430 ND 20 ND 190 J = analyte detected at a concentration below the laboratory Reporting Limit; therefore, the result is an estimated concentration B‐03 = analyte present in the blank above the reported MDL but below the reporting limit ‐‐ = analyte not included in analysis Lot K probes are located on the east side of Heritage Road west of lots 50 through 52 Page 6 of 10 3 Chloro‐ ethane Dibromo‐ methane Dichloro‐ difluoro‐ methane (ug/m3) ND<100 ND<100 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<100 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND (ug/m3) ND<100 ND<100 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 130 ND<20 ND<100 ND<100 ND<100 ND<100 ND<100 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 130 Table 5 Soil Gas Mobile Laboratory Analytical Results‐VOCs  Otay Ranch Village 3 Heritage Road, Chula Vista, CA Probe Location Lot 42 Lot 42 Lot 51 Lot 51 Lot 60 Lot 60 Lot 73 Lot 73 Lot 94 Lot 94 Lot 101 Lot 101 Lot 108 Lot 108 Lot 126 Lot 126 Lot 196 Lot 196 Lot 202 Lot 202 Lot 211 Lot 211 Lot 223 Lot 223 Lot 253 Lot 253 Lot 324 Lot 324 Lot 335 Lot 335 Lot 342 Lot 342 Lot 352 Lot 352 Lot 699 Lot 699 Lot 711 Lot 711 Lot 735 Lot 735 Lot 745 Lot 760 Lot 760 Lot 769 Lot 769 Lot 824 Lot 825 Lot 825 Lot 816 Lot 817 Lot 817 Lot 817 Lot Type Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Commercial Commercial Commercial Commercial Probe ID SGP‐42‐5 SGP‐42‐25 SGP‐51‐5 SGP‐51‐25 SGP‐60‐5 SGP‐60‐25 SGP‐73‐5 SGP‐73‐25 SGP‐94‐5 SGP‐94‐25 SGP‐101‐5 SGP‐101‐25 SGP‐108‐5 SGP‐108‐25 SGP‐126‐5 SGP‐126‐25 SGP‐196‐5 SGP‐196‐30 SGP‐202‐5 SGP‐202‐25 SGP‐211‐5 SGP‐211‐25 SGP‐223‐5 SGP‐223‐25 SGP‐253‐5 SGP‐253‐22 SGP‐324‐5 SGP‐324‐25 SGP‐335‐5 SGP‐335‐30 SGP‐342‐5 SGP‐342‐32 SGP‐352‐5 SGP‐352‐25 SGP‐699‐5 SGP‐699‐25 SGP‐711‐5 SGP‐711‐8 SGP‐735‐5 SGP‐735‐15 SGP‐745‐5 SGP‐760‐5 SGP‐760‐20 SGP‐769‐5 SGP‐769‐15 SGP‐824‐5 SGP‐825‐5 SGP‐825‐12 SGP‐816‐3 SGP‐817‐5 SGP‐817‐5 SGP‐817‐10 Sample Name SGP‐42‐5  3PV SGP‐42‐25  3PV SGP‐51‐5  3PV SGP‐51‐25  3PV SGP‐60‐5 SGP‐60‐25 SGP‐73‐5 SGP‐73‐25 SGP‐94‐5  3PV SGP‐94‐25  3PV SGP‐101‐5  3PV SGP‐101‐25  3PV SGP‐108‐5  3PV SGP‐108‐25  3PV SGP‐126‐5  3PV SGP‐126‐25  3PV SGP‐196‐5  3PV SGP‐196‐30  3PV SGP‐202‐5  3PV SGP‐202‐25  3PV SGP‐211‐5  3PV SGP‐211‐25  3PV SGP‐223‐5 SGP‐223‐25 SGP‐253‐5  3PV SGP‐253‐22  3PV SGP‐324‐5 SGP‐324‐25 SGP‐335‐5 SGP‐335‐30 SGP‐342‐5  3PV SGP‐342‐32  3PV SGP‐352‐5 SGP‐352‐25 SGP‐699‐5  3PV SGP‐699‐25  3PV SGP‐711‐5  3PV SGP‐711‐8  3PV SGP‐735‐5  3PV SGP‐735‐15  3PV SGP‐745‐5  3PV SGP‐760‐5  3PV SGP‐760‐20  3PV SGP‐769‐5  3PV SGP‐769‐15  3PV SGP‐824‐5 SGP‐825‐5 SGP‐825‐12 SGP‐816‐3 SGP‐817‐5 SGP‐817‐5 REP SGP‐817‐10  Probe  Depth (fbg) 5 25 5 25 5 25 5 25 5 25 5 25 5 25 5 25 5 30 5 25 5 25 5 25 5 22 5 25 5 30 5 32 5 25 5 25 5 8 5 15 5 5 20 5 15 5 5 12 3 5 5 10 Sample  Date 06/27/2017 06/27/2017 06/27/2017 06/27/2017 07/18/2017 07/18/2017 07/18/2017 07/18/2017 06/27/2017 06/27/2017 06/27/2017 06/27/2017 06/27/2017 06/27/2017 06/27/2017 06/27/2017 06/26/2017 06/26/2017 06/26/2017 06/26/2017 06/26/2017 06/26/2017 07/18/2017 07/18/2017 06/28/2017 06/28/2017 07/18/2017 07/18/2017 07/18/2017 07/18/2017 06/27/2017 06/27/2017 07/18/2017 07/18/2017 06/28/2017 06/28/2017 06/28/2017 06/28/2017 06/26/2017 06/26/2017 06/26/2017 06/26/2017 06/26/2017 06/26/2017 06/26/2017 07/17/2017 07/17/2017 07/17/2017 07/17/2017 07/17/2017 07/17/2017 07/17/2017 Diisopropyl  Ether (DIPE) Ethyl tert‐ butyl ether  (ETBE) Ethyl‐ benzene Hexachloro‐ butadiene Isopropyl‐ benzene (ug/m3) ND<1,000 ND<1,000 ND<1,000 ND<1,000 ND<200 ND<200 ND<200 ND<200 ND<1,000 ND<1,000 ND<1,000 ND<1,000 ND<1,000 ND<1,000 ND<1,000 ND<1,000 ND<1,000 ND<1,000 ND<1,000 ND<1,000 ND<1,000 ND<1,000 ND<200 ND<200 ND<1,000 ND<1,000 ND<200 ND<200 ND<200 ND<200 ND<1,000 ND<1,000 ND<200 ND<200 ND<1,000 ND<1,000 ND<1,000 ND<1,000 ND<1,000 ND<1,000 ND<1,000 ND<1,000 ND<1,000 ND<1,000 ND<1,000 ND<200 ND<200 ND<200 ND<200 ND<200 ND<200 ND<200 (ug/m3) ND<1,000 ND<1,000 ND<1,000 ND<1,000 ND<200 ND<200 ND<200 ND<200 ND<1,000 ND<1,000 ND<1,000 ND<1,000 ND<1,000 ND<1,000 ND<1,000 ND<1,000 ND<1,000 ND<1,000 ND<1,000 ND<1,000 ND<1,000 ND<1,000 ND<200 ND<200 ND<1,000 ND<1,000 ND<200 ND<200 ND<200 ND<200 ND<1,000 ND<1,000 ND<200 ND<200 ND<1,000 ND<1,000 ND<1,000 ND<1,000 ND<1,000 ND<1,000 ND<1,000 ND<1,000 ND<1,000 ND<1,000 ND<1,000 ND<200 ND<200 ND<200 ND<200 ND<200 ND<200 ND<200 (ug/m3) 140 170 210 60 350 ND<100 ND<100 370 40 30 90 70 50 10 (J) 240 140 10 (J) 180 30 90 70 160 50 (J) ND<100 180 20 160 ND<100 110 430 70 ND<20 70 (J) 160 210 150 ND<20 ND<20 ND<20 ND<20 190 40 100 60 20 40 (J) ND<100 ND<100 ND<100 ND<100 40 (J) 40 (J) (ug/m3) ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<20 ND<20 ND<100 ND<100 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 (ug/m3) ND<20 10 (J) 10 (J) 60 ND<100 ND<100 ND<100 ND<100 ND<20 ND<20 10 (J) ND<20 ND<20 ND<20 30 10 (J) ND<20 10 (J) ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<20 ND<20 ND<100 ND<100 20 20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 Page 7 of 10 meta‐ and  Methyl tert‐ para‐ butyl ether  Methylene  Naphthalen Xylenes (MTBE) Chloride e (ug/m3) 580 720 760 220 1,200 130 100 1,300 160 130 390 280 190 50 970 590 50 640 120 330 290 560 340 80 (J) 830 60 500 70 (J) 460 1,400 240 20 320 590 900 620 ND<20 ND<20 20 ND<20 760 180 380 240 70 190 90 (J) 80 (J) 90 (J) 190 220 170 (ug/m3) ND<1,000 ND<1,000 ND<1,000 ND<1,000 ND<100 ND<100 ND<100 ND<100 ND<1,000 ND<1,000 ND<1,000 ND<1,000 ND<1,000 ND<1,000 ND<1,000 ND<1,000 ND<1,000 ND<1,000 ND<1,000 ND<1,000 ND<1,000 ND<1,000 ND<100 ND<100 ND<1,000 ND<1,000 ND<100 ND<100 ND<100 ND<100 ND<1,000 ND<1,000 ND<100 ND<100 ND<1,000 ND<1,000 ND<1,000 ND<1,000 ND<1,000 ND<1,000 ND<1,000 ND<1,000 ND<1,000 ND<1,000 ND<1,000 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 (ug/m3) ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<20 ND<20 ND<100 ND<100 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 (ug/m3) ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 50 20 ND<20 20 n‐Butyl‐ benzene n‐Propyl‐ benzene ortho‐ Xylene (ug/m3) ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 10 (J) ND<20 ND<100 ND<100 ND<100 ND<100 ND<20 ND<20 ND<100 ND<100 10 (J) ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 (ug/m3) 40 50 40 20 130 ND<100 ND<100 110 10 (J) ND<20 30 20 20 ND<20 80 40 ND<20 30 ND<20 ND<20 20 30 40 (J) ND<100 70 ND<20 ND<100 ND<100 ND<100 80 (J) 20 ND<20 ND<100 40 (J) 80 50 ND<20 ND<20 ND<20 ND<20 40 10 (J) 20 10 (J) ND<20 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 (ug/m3) 200 250 220 70 470 50 (J) 40 (J) 380 50 30 130 90 70 20 290 160 20 180 40 110 90 160 160 ND<100 280 20 120 ND<100 160 410 80 ND<20 140 220 270 170 ND<20 ND<20 ND<20 ND<20 460 50 80 70 20 90 (J) ND<100 ND<100 ND<100 90 (J) 90 (J) 70 (J) Table 5 Soil Gas Mobile Laboratory Analytical Results‐VOCs  Otay Ranch Village 3 Heritage Road, Chula Vista, CA Probe Location Lot Type Lot 818 Lot 818 Lot 814 Lot 814 Lot 814 Lot 814 Lot 814 Lot 814 Lot 814 Lot 814 Lot 814 Lot 814 Lot 814 Lot 814 Lot 814 Lot 814 Lot 814 Lot 814 Lot 815 Lot 815 Lot 815 Lot 815 Lot 815 Lot 815 Lot 815 Lot 815 Lot 815 Lot 815 Lot 815 Lot 815 Lot A Lot A Lot A Lot A Lot A Lot K Lot K Lot K Lot K Lot K Lot K Lot K Lot K Lot K Lot K Lot K Lot K Commercial Commercial School School School School School School School School School School School School School School School School School School School School School School School School School School School School School School School School School Street Street Street Street Street Street Street Street Street Street Street Street Probe ID Sample Name  Probe  Depth (fbg) SGP‐818‐5 SGP‐818‐10 SGP‐01‐5 SGP‐01‐5 SGP‐02‐5 SGP‐02‐5 SGP‐03‐5 SGP‐03‐5 SGP‐01‐10 SGP‐01‐10 SGP‐02‐15 SGP‐02‐15 SGP‐03‐15 SGP‐03‐15 SGP‐03‐23 SGP‐03‐23 SGP‐02‐32 SGP‐02‐32 SGP‐04‐5 SGP‐04‐5 SGP‐05‐5 SGP‐05‐5 SGP‐06‐5 SGP‐06‐5 SGP‐07‐5 SGP‐07‐5 SGP‐04‐13 SGP‐04‐13 SGP‐05‐13 SGP‐05‐13 SGP‐A‐East‐5 SGP‐A‐East‐5 SGP‐A‐West‐5 SGP‐A‐West‐9 SGP‐A‐East‐20 SGP‐08‐5 SGP‐08‐5 SGP‐09‐5 SGP‐09‐5 SGP‐10‐5 SGP‐10‐5 SGP‐08‐10 SGP‐08‐10 SGP‐09‐10 SGP‐09‐10 SGP‐10‐10 SGP‐10‐10 SGP‐818‐5 SGP‐818‐10 SGP‐01‐5  3PV SGP‐01‐5  3PV SGP‐02‐5  3PV SGP‐02‐5  3PV SGP‐03‐5  3PV SGP‐03‐5  3PV SGP‐01‐10  3PV SGP‐01‐10  3PV SGP‐02‐15  3PV SGP‐02‐15  3PV SGP‐03‐15  3PV SGP‐03‐15  3PV SGP‐03‐23  3PV SGP‐03‐23  3PV SGP‐02‐32  3PV SGP‐02‐32  3PV SGP‐04‐5  3PV SGP‐04‐5  3PV SGP‐05‐5  3PV SGP‐05‐5  3PV SGP‐06‐5  3PV SGP‐06‐5  3PV SGP‐07‐5  3PV SGP‐07‐5  3PV SGP‐04‐13  3PV SGP‐04‐13  3PV SGP‐05‐13  3PV SGP‐05‐13  3PV SGP‐A‐East‐5 SGP‐A‐East‐5 REP SGP‐A‐West‐5 SGP‐A‐West‐9 SGP‐A‐East‐20 SGP‐08‐5  3PV SGP‐08‐5  3PV SGP‐09‐5  3PV SGP‐09‐5  3PV SGP‐10‐5  3PV SGP‐10‐5  3PV SGP‐08‐10  3PV SGP‐08‐10  3PV SGP‐09‐10  3PV SGP‐09‐10  3PV SGP‐10‐10  3PV SGP‐10‐10  3PV 5 10 5 5 5 5 5 5 10 10 15 15 15 15 23 23 32 32 5 5 5 5 5 5 5 5 13 13 13 13 5 5 5 9 20 5 5 5 5 5 5 10 10 10 10 10 10 Notes: fbg = feet below grade ug/m3 = micrograms per cubic meter ND = not detected above cited laboratory Reporting Limit Sample  Date 07/17/2017 07/17/2017 06/07/2017 06/08/2017 06/08/2017 06/08/2017 06/07/2017 06/07/2017 06/08/2017 06/08/2017 06/08/2017 06/08/2017 06/07/2017 06/07/2017 06/07/2017 06/08/2017 06/08/2017 06/08/2017 06/07/2017 06/07/2017 06/07/2017 06/07/2017 06/07/2017 06/07/2017 06/07/2017 06/07/2017 06/07/2017 06/07/2017 06/07/2017 06/07/2017 07/18/2017 07/18/2017 07/18/2017 07/18/2017 07/18/2017 06/08/2017 06/08/2017 06/08/2017 06/08/2017 06/08/2017 06/08/2017 06/08/2017 06/08/2017 06/08/2017 06/08/2017 06/08/2017 06/08/2017 Maximum Result Diisopropyl  Ether (DIPE) Ethyl tert‐ butyl ether  (ETBE) (ug/m3) ND<200 ND<200 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ND<200 ND<200 ND<200 ND<200 ND<200 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ (ug/m3) ND<200 ND<200 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ND<200 ND<200 ND<200 ND<200 ND<200 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ND Ethyl‐ benzene Hexachloro‐ butadiene Isopropyl‐ benzene meta‐ and  Methyl tert‐ para‐ butyl ether  Methylene  Naphthalen Xylenes (MTBE) Chloride e n‐Butyl‐ benzene (ug/m3) (ug/m3) (ug/m3) (ug/m3) (ug/m3) (ug/m3) (ug/m3) (ug/m3) 50 (J) ND<100 ND<100 230 ND<100 ND<100 ND<20 ND<100 70 (J) ND<100 ND<100 320 ND<100 ND<100 ND<20 ND<100 250 ND<20 20 1,000 ‐‐ ND<20 ND<20 ND<20 310 ND<20 30 1,300 ‐‐ ND<20 ND<20 ND<20 150 ND<20 30 700 ‐‐ ND<20 ND<20 30 190 ND<20 30 830 ‐‐ ND<20 ND<20 20 330 ND<20 30 1,200 ‐‐ ND<20 ND<20 10 (J) 490 ND<20 50 1,800 ‐‐ ND<20 ND<20 20 1,200 ND<20 110 4,800 ‐‐ ND<20 ND<20 20 1,400 ND<20 140 5,500 ‐‐ ND<20 ND<20 40 350 ND<20 40 1,200 ‐‐ ND<20 ND<20 ND<20 270 ND<20 30 1,100 ‐‐ ND<20 ND<20 20 160 ND<20 10 (J) 630 ‐‐ ND<20 ND<20 ND<20 220 ND<20 20 810 ‐‐ ND<20 ND<20 ND<20 160 ND<20 10 (J) 590 ‐‐ ND<20 ND<20 ND<20 310 ND<20 30 1,100 ‐‐ ND<20 ND<20 ND<20 30 770 ND<20 80 2,600 ‐‐ ND<20 ND<20 920 ND<20 100 3,100 ‐‐ ND<20 ND<20 40 380 ND<20 30 1,600 ‐‐ ND<20 ND<20 10 (J) 550 ND<20 50 2,400 ‐‐ ND<20 ND<20 20 110 ND<20 10 (J) 470 ‐‐ ND<20 ND<20 ND<20 280 ND<20 30 1,200 ‐‐ ND<20 ND<20 10 (J) 20 ND<20 ND<20 60 ‐‐ ND<20 ND<20 ND<20 60 ND<20 ND<20 200 ‐‐ ND<20 ND<20 ND<20 170 ND<20 20 630 ‐‐ ND<20 ND<20 ND<20 260 ND<20 20 990 ‐‐ ND<20 ND<20 ND<20 30 ND<20 ND<20 120 ‐‐ ND<20 ND<20 ND<20 40 ND<20 ND<20 190 ‐‐ ND<20 ND<20 ND<20 40 ND<20 10 (J) 340 ‐‐ ND<20 ND<20 ND<20 50 ND<20 10 (J) 370 ‐‐ ND<20 ND<20 ND<20 ND<100 ND<100 ND<100 50 (J) ND<100 ND<100 ND<20 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<20 ND<100 ND<100 ND<100 ND<100 60 (J) ND<100 ND<100 ND<20 ND<100 ND<100 ND<100 ND<100 80 (J) ND<100 ND<100 ND<20 ND<100 160 ND<100 ND<100 660 ND<100 ND<100 20 ND<100 50 1,600 ‐‐ ND<20 ND<20 ND<20 460 ND<20 520 ND<20 60 1,800 ‐‐ ND<20 ND<20 ND<20 490 ND<20 50 1,700 ‐‐ ND<20 ND<20 ND<20 810 ND<20 90 3,100 ‐‐ ND<20 ND<20 30 120 ND<20 10 (J) 440 ‐‐ ND<20 ND<20 ND<20 270 ND<20 30 1,300 ‐‐ ND<20 ND<20 20 110 ND<20 10 (J) 400 ‐‐ ND<20 ND<20 ND<20 140 ND<20 10 (J) 500 ‐‐ ND<20 ND<20 ND<20 430 ND<20 40 1,500 ‐‐ ND<20 ND<20 ND<20 150 ND<20 20 590 ‐‐ ND<20 ND<20 ND<20 310 ND<20 40 1,400 ‐‐ ND<20 ND<20 20 180 ND<20 20 780 ‐‐ ND<20 ND<20 20 ND 1,400 ND 140 5,500 ND ND 50 40 J = analyte detected at a concentration below the laboratory Reporting Limit; therefore, the result is an estimated concentration B‐03 = analyte present in the blank above the reported MDL but below the reporting limit ‐‐ = analyte not included in analysis Lot K probes are located on the east side of Heritage Road west of lots 50 through 52 Page 8 of 10 n‐Propyl‐ benzene ortho‐ Xylene (ug/m3) ND<100 ND<100 50 70 100 90 80 130 310 410 90 110 40 50 30 70 210 290 110 160 40 70 ND<20 10 (J) 30 50 ND<20 10 (J) ND<20 10 (J) ND<100 ND<100 ND<100 ND<100 60 (J) 100 130 100 260 40 130 30 30 90 40 140 90 410 (ug/m3) 110 120 350 450 290 330 380 540 1,400 1,700 360 390 210 260 200 360 730 880 550 770 160 360 20 60 210 310 40 60 90 100 ND<100 ND<100 ND<100 ND<100 220 430 500 460 910 150 470 110 140 420 180 500 310 1,700 Table 5 Soil Gas Mobile Laboratory Analytical Results‐VOCs  Otay Ranch Village 3 Heritage Road, Chula Vista, CA Probe Location Lot 42 Lot 42 Lot 51 Lot 51 Lot 60 Lot 60 Lot 73 Lot 73 Lot 94 Lot 94 Lot 101 Lot 101 Lot 108 Lot 108 Lot 126 Lot 126 Lot 196 Lot 196 Lot 202 Lot 202 Lot 211 Lot 211 Lot 223 Lot 223 Lot 253 Lot 253 Lot 324 Lot 324 Lot 335 Lot 335 Lot 342 Lot 342 Lot 352 Lot 352 Lot 699 Lot 699 Lot 711 Lot 711 Lot 735 Lot 735 Lot 745 Lot 760 Lot 760 Lot 769 Lot 769 Lot 824 Lot 825 Lot 825 Lot 816 Lot 817 Lot 817 Lot 817 Lot Type Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Residential Commercial Commercial Commercial Commercial Probe ID SGP‐42‐5 SGP‐42‐25 SGP‐51‐5 SGP‐51‐25 SGP‐60‐5 SGP‐60‐25 SGP‐73‐5 SGP‐73‐25 SGP‐94‐5 SGP‐94‐25 SGP‐101‐5 SGP‐101‐25 SGP‐108‐5 SGP‐108‐25 SGP‐126‐5 SGP‐126‐25 SGP‐196‐5 SGP‐196‐30 SGP‐202‐5 SGP‐202‐25 SGP‐211‐5 SGP‐211‐25 SGP‐223‐5 SGP‐223‐25 SGP‐253‐5 SGP‐253‐22 SGP‐324‐5 SGP‐324‐25 SGP‐335‐5 SGP‐335‐30 SGP‐342‐5 SGP‐342‐32 SGP‐352‐5 SGP‐352‐25 SGP‐699‐5 SGP‐699‐25 SGP‐711‐5 SGP‐711‐8 SGP‐735‐5 SGP‐735‐15 SGP‐745‐5 SGP‐760‐5 SGP‐760‐20 SGP‐769‐5 SGP‐769‐15 SGP‐824‐5 SGP‐825‐5 SGP‐825‐12 SGP‐816‐3 SGP‐817‐5 SGP‐817‐5 SGP‐817‐10 Sample Name SGP‐42‐5  3PV SGP‐42‐25  3PV SGP‐51‐5  3PV SGP‐51‐25  3PV SGP‐60‐5 SGP‐60‐25 SGP‐73‐5 SGP‐73‐25 SGP‐94‐5  3PV SGP‐94‐25  3PV SGP‐101‐5  3PV SGP‐101‐25  3PV SGP‐108‐5  3PV SGP‐108‐25  3PV SGP‐126‐5  3PV SGP‐126‐25  3PV SGP‐196‐5  3PV SGP‐196‐30  3PV SGP‐202‐5  3PV SGP‐202‐25  3PV SGP‐211‐5  3PV SGP‐211‐25  3PV SGP‐223‐5 SGP‐223‐25 SGP‐253‐5  3PV SGP‐253‐22  3PV SGP‐324‐5 SGP‐324‐25 SGP‐335‐5 SGP‐335‐30 SGP‐342‐5  3PV SGP‐342‐32  3PV SGP‐352‐5 SGP‐352‐25 SGP‐699‐5  3PV SGP‐699‐25  3PV SGP‐711‐5  3PV SGP‐711‐8  3PV SGP‐735‐5  3PV SGP‐735‐15  3PV SGP‐745‐5  3PV SGP‐760‐5  3PV SGP‐760‐20  3PV SGP‐769‐5  3PV SGP‐769‐15  3PV SGP‐824‐5 SGP‐825‐5 SGP‐825‐12 SGP‐816‐3 SGP‐817‐5 SGP‐817‐5 REP SGP‐817‐10  Probe  Depth (fbg) 5 25 5 25 5 25 5 25 5 25 5 25 5 25 5 25 5 30 5 25 5 25 5 25 5 22 5 25 5 30 5 32 5 25 5 25 5 8 5 15 5 5 20 5 15 5 5 12 3 5 5 10 Sample  Date 06/27/2017 06/27/2017 06/27/2017 06/27/2017 07/18/2017 07/18/2017 07/18/2017 07/18/2017 06/27/2017 06/27/2017 06/27/2017 06/27/2017 06/27/2017 06/27/2017 06/27/2017 06/27/2017 06/26/2017 06/26/2017 06/26/2017 06/26/2017 06/26/2017 06/26/2017 07/18/2017 07/18/2017 06/28/2017 06/28/2017 07/18/2017 07/18/2017 07/18/2017 07/18/2017 06/27/2017 06/27/2017 07/18/2017 07/18/2017 06/28/2017 06/28/2017 06/28/2017 06/28/2017 06/26/2017 06/26/2017 06/26/2017 06/26/2017 06/26/2017 06/26/2017 06/26/2017 07/17/2017 07/17/2017 07/17/2017 07/17/2017 07/17/2017 07/17/2017 07/17/2017 p‐Isopropyl‐ toluene sec‐Butyl‐ benzene Styrene tert‐Amyl  methyl  ether  tert‐Butanol  tert‐Butyl‐ Tetrachloro‐ (TAME) (TBA) benzene ethene (ug/m3) 20 30 30 50 40 (J) ND<100 ND<100 70 (J) ND<20 ND<20 10 (J) 10 (J) 10 (J) ND<20 20 ND<20 10 (J) 20 ND<20 ND<20 10 (J) 30 70 (J) ND<100 10 (J) ND<20 ND<100 ND<100 ND<100 80 (J) 20 ND<20 ND<100 ND<100 10 (J) 10 (J) ND<20 ND<20 ND<20 ND<20 30 ND<20 10 (J) 10 (J) ND<20 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 (ug/m3) ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<20 ND<20 ND<100 ND<100 10 (J) ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 (ug/m3) ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<20 ND<20 ND<100 ND<100 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 (ug/m3) ND<1,000 ND<1,000 ND<1,000 ND<1,000 ND<200 ND<200 ND<200 ND<200 ND<1,000 ND<1,000 ND<1,000 ND<1,000 ND<1,000 ND<1,000 ND<1,000 ND<1,000 ND<1,000 ND<1,000 ND<1,000 ND<1,000 ND<1,000 ND<1,000 ND<200 ND<200 ND<1,000 ND<1,000 ND<200 ND<200 ND<200 ND<200 ND<1,000 ND<1,000 ND<200 ND<200 ND<1,000 ND<1,000 ND<1,000 ND<1,000 ND<1,000 ND<1,000 ND<1,000 ND<1,000 ND<1,000 ND<1,000 ND<1,000 ND<200 ND<200 ND<200 ND<200 ND<200 ND<200 ND<200 Page 9 of 10 (ug/m3) ND<20,000 ND<20,000 ND<20,000 ND<20,000 ND<1,000 ND<1,000 ND<1,000 ND<1,000 ND<20,000 ND<20,000 ND<20,000 ND<20,000 ND<20,000 ND<20,000 ND<20,000 ND<20,000 ND<20,000 ND<20,000 ND<20,000 ND<20,000 ND<20,000 ND<20,000 ND<1,000 ND<1,000 ND<20,000 ND<20,000 ND<1,000 ND<1,000 ND<1,000 ND<1,000 ND<20,000 ND<20,000 ND<1,000 ND<1,000 ND<20,000 ND<20,000 ND<20,000 ND<20,000 ND<20,000 ND<20,000 ND<20,000 ND<20,000 ND<20,000 ND<20,000 ND<20,000 ND<1,000 ND<1,000 ND<1,000 ND<1,000 ND<1,000 ND<1,000 ND<1,000 (ug/m3) ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<20 ND<20 ND<100 ND<100 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 (ug/m3) ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 10 (J) ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 Toluene trans‐1,2‐ Dichloro‐ ethene trans‐1,3‐ Dichloro‐ propene Trichloro‐ ethene Trichloro‐ fluoro‐ methane Vinyl  Chloride (ug/m3) 370 430 660 130 380 180 (J) ND<200 850 120 100 270 180 100 30 700 580 30 520 60 210 150 480 ND<200 ND<200 470 40 280 ND<200 190 (J) 990 160 10 (J) 120 (J) 240 650 490 ND<20 ND<20 10 (J) 10 (J) 470 90 300 160 50 90 (J) ND<200 ND<200 ND<200 90 (J) 100 (J) 110 (J) (ug/m3) ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<20 ND<20 ND<100 ND<100 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 (ug/m3) ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<20 ND<20 ND<100 ND<100 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 (ug/m3) ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 (ug/m3) 20 20 10 (J) ND<20 ND<100 ND<100 ND<100 ND<100 ND<20 ND<20 ND<20 ND<20 ND<20 10 (J) ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<20 ND<20 ND<100 ND<100 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 (ug/m3) ND<20 ND<20 ND<20 ND<20 ND<10 ND<10 ND<10 ND<10 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<10 ND<10 ND<20 ND<20 ND<10 ND<10 ND<10 ND<10 ND<20 ND<20 ND<10 ND<10 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<10 ND<10 ND<10 ND<10 ND<10 ND<10 ND<10 Table 5 Soil Gas Mobile Laboratory Analytical Results‐VOCs  Otay Ranch Village 3 Heritage Road, Chula Vista, CA Probe Location Lot Type Lot 818 Lot 818 Lot 814 Lot 814 Lot 814 Lot 814 Lot 814 Lot 814 Lot 814 Lot 814 Lot 814 Lot 814 Lot 814 Lot 814 Lot 814 Lot 814 Lot 814 Lot 814 Lot 815 Lot 815 Lot 815 Lot 815 Lot 815 Lot 815 Lot 815 Lot 815 Lot 815 Lot 815 Lot 815 Lot 815 Lot A Lot A Lot A Lot A Lot A Lot K Lot K Lot K Lot K Lot K Lot K Lot K Lot K Lot K Lot K Lot K Lot K Commercial Commercial School School School School School School School School School School School School School School School School School School School School School School School School School School School School School School School School School Street Street Street Street Street Street Street Street Street Street Street Street Probe ID Sample Name  Probe  Depth (fbg) SGP‐818‐5 SGP‐818‐10 SGP‐01‐5 SGP‐01‐5 SGP‐02‐5 SGP‐02‐5 SGP‐03‐5 SGP‐03‐5 SGP‐01‐10 SGP‐01‐10 SGP‐02‐15 SGP‐02‐15 SGP‐03‐15 SGP‐03‐15 SGP‐03‐23 SGP‐03‐23 SGP‐02‐32 SGP‐02‐32 SGP‐04‐5 SGP‐04‐5 SGP‐05‐5 SGP‐05‐5 SGP‐06‐5 SGP‐06‐5 SGP‐07‐5 SGP‐07‐5 SGP‐04‐13 SGP‐04‐13 SGP‐05‐13 SGP‐05‐13 SGP‐A‐East‐5 SGP‐A‐East‐5 SGP‐A‐West‐5 SGP‐A‐West‐9 SGP‐A‐East‐20 SGP‐08‐5 SGP‐08‐5 SGP‐09‐5 SGP‐09‐5 SGP‐10‐5 SGP‐10‐5 SGP‐08‐10 SGP‐08‐10 SGP‐09‐10 SGP‐09‐10 SGP‐10‐10 SGP‐10‐10 SGP‐818‐5 SGP‐818‐10 SGP‐01‐5  3PV SGP‐01‐5  3PV SGP‐02‐5  3PV SGP‐02‐5  3PV SGP‐03‐5  3PV SGP‐03‐5  3PV SGP‐01‐10  3PV SGP‐01‐10  3PV SGP‐02‐15  3PV SGP‐02‐15  3PV SGP‐03‐15  3PV SGP‐03‐15  3PV SGP‐03‐23  3PV SGP‐03‐23  3PV SGP‐02‐32  3PV SGP‐02‐32  3PV SGP‐04‐5  3PV SGP‐04‐5  3PV SGP‐05‐5  3PV SGP‐05‐5  3PV SGP‐06‐5  3PV SGP‐06‐5  3PV SGP‐07‐5  3PV SGP‐07‐5  3PV SGP‐04‐13  3PV SGP‐04‐13  3PV SGP‐05‐13  3PV SGP‐05‐13  3PV SGP‐A‐East‐5 SGP‐A‐East‐5 REP SGP‐A‐West‐5 SGP‐A‐West‐9 SGP‐A‐East‐20 SGP‐08‐5  3PV SGP‐08‐5  3PV SGP‐09‐5  3PV SGP‐09‐5  3PV SGP‐10‐5  3PV SGP‐10‐5  3PV SGP‐08‐10  3PV SGP‐08‐10  3PV SGP‐09‐10  3PV SGP‐09‐10  3PV SGP‐10‐10  3PV SGP‐10‐10  3PV 5 10 5 5 5 5 5 5 10 10 15 15 15 15 23 23 32 32 5 5 5 5 5 5 5 5 13 13 13 13 5 5 5 9 20 5 5 5 5 5 5 10 10 10 10 10 10 Notes: fbg = feet below grade ug/m3 = micrograms per cubic meter ND = not detected above cited laboratory Reporting Limit Sample  Date 07/17/2017 07/17/2017 06/07/2017 06/08/2017 06/08/2017 06/08/2017 06/07/2017 06/07/2017 06/08/2017 06/08/2017 06/08/2017 06/08/2017 06/07/2017 06/07/2017 06/07/2017 06/08/2017 06/08/2017 06/08/2017 06/07/2017 06/07/2017 06/07/2017 06/07/2017 06/07/2017 06/07/2017 06/07/2017 06/07/2017 06/07/2017 06/07/2017 06/07/2017 06/07/2017 07/18/2017 07/18/2017 07/18/2017 07/18/2017 07/18/2017 06/08/2017 06/08/2017 06/08/2017 06/08/2017 06/08/2017 06/08/2017 06/08/2017 06/08/2017 06/08/2017 06/08/2017 06/08/2017 06/08/2017 Maximum Result p‐Isopropyl‐ toluene (ug/m3) ND<100 ND<100 ND<20 ND<20 10 (J) 10 (J) ND<20 10 (J) 30 50 ND<20 20 ND<20 ND<20 ND<20 ND<20 20 20 10 (J) 20 ND<20 10 (J) ND<20 ND<20 10 (J) 20 ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 60 (J) ND<20 10 (J) ND<20 30 ND<20 30 ND<20 ND<20 ND<20 ND<20 20 20 80 sec‐Butyl‐ benzene Styrene tert‐Amyl  methyl  ether  tert‐Butanol  tert‐Butyl‐ Tetrachloro‐ (TAME) (TBA) benzene ethene Toluene trans‐1,2‐ Dichloro‐ ethene trans‐1,3‐ Dichloro‐ propene Trichloro‐ ethene (ug/m3) (ug/m3) (ug/m3) (ug/m3) (ug/m3) (ug/m3) (ug/m3) (ug/m3) (ug/m3) (ug/m3) ND<100 ND<100 ND<200 ND<1,000 ND<100 ND<20 140 (J) ND<100 ND<100 ND<20 ND<100 ND<100 ND<200 ND<1,000 ND<100 ND<20 210 ND<100 ND<100 ND<20 ND<20 ND<20 ‐‐ ‐‐ ND<20 ND<20 720 ND<20 ND<20 ND<20 ND<20 ND<20 ‐‐ ‐‐ ND<20 ND<20 750 ND<20 ND<20 ND<20 ND<20 ND<20 ‐‐ ‐‐ ND<20 ND<20 170 ND<20 ND<20 ND<20 ND<20 ND<20 ‐‐ ‐‐ ND<20 ND<20 290 ND<20 ND<20 ND<20 ND<20 ND<20 ‐‐ ‐‐ ND<20 ND<20 1,300 ND<20 ND<20 ND<20 ND<20 10 (J) ‐‐ ‐‐ ND<20 ND<20 1,400 ND<20 ND<20 ND<20 ND<20 30 ‐‐ ‐‐ ND<20 20 3,000 ND<20 ND<20 ND<20 ND<20 50 ‐‐ ‐‐ ND<20 20 2,900 ND<20 ND<20 ND<20 ND<20 ND<20 ‐‐ ‐‐ ND<20 ND<20 980 ND<20 ND<20 ND<20 ND<20 ND<20 ‐‐ ‐‐ ND<20 ND<20 510 ND<20 ND<20 ND<20 ND<20 ND<20 ‐‐ ‐‐ ND<20 ND<20 620 ND<20 ND<20 ND<20 ND<20 ND<20 ‐‐ ‐‐ ND<20 ND<20 730 ND<20 ND<20 ND<20 ND<20 ND<20 ‐‐ ‐‐ ND<20 ND<20 660 ND<20 ND<20 ND<20 ND<20 ND<20 ‐‐ ‐‐ ND<20 ND<20 1,000 ND<20 ND<20 ND<20 30 10 (J) ‐‐ ‐‐ ND<20 10 (J) 2,300 ND<20 ND<20 ND<20 ND<20 20 ‐‐ ‐‐ ND<20 ND<20 2,600 ND<20 ND<20 10 (J) ND<20 ND<20 ‐‐ ‐‐ ND<20 ND<20 1,000 ND<20 ND<20 ND<20 ND<20 ND<20 ‐‐ ‐‐ ND<20 10 (J) 1,200 ND<20 ND<20 ND<20 ND<20 ND<20 ‐‐ ‐‐ ND<20 40 330 ND<20 ND<20 ND<20 ND<20 ND<20 ‐‐ ‐‐ ND<20 20 900 ND<20 ND<20 ND<20 ND<20 ND<20 ‐‐ ‐‐ ND<20 ND<20 70 ND<20 ND<20 ND<20 ND<20 ND<20 ‐‐ ‐‐ ND<20 ND<20 270 ND<20 ND<20 ND<20 ND<20 ND<20 ‐‐ ‐‐ ND<20 10 (J) 620 ND<20 ND<20 ND<20 ND<20 ND<20 ‐‐ ‐‐ ND<20 20 900 ND<20 ND<20 ND<20 ND<20 ND<20 ‐‐ ‐‐ ND<20 ND<20 70 ND<20 ND<20 ND<20 ND<20 ND<20 ‐‐ ‐‐ ND<20 ND<20 100 ND<20 ND<20 ND<20 ND<20 ND<20 ‐‐ ‐‐ ND<20 260 240 ND<20 ND<20 ND<20 ND<20 ND<20 ‐‐ ‐‐ ND<20 250 270 ND<20 ND<20 50 ND<100 ND<100 ND<200 ND<1,000 ND<100 ND<20 ND<200 ND<100 ND<100 ND<20 ND<100 ND<100 ND<200 ND<1,000 ND<100 ND<20 ND<200 ND<100 ND<100 ND<20 ND<100 ND<100 ND<200 ND<1,000 ND<100 ND<20 ND<200 ND<100 ND<100 ND<20 ND<100 ND<100 ND<200 ND<1,000 ND<100 ND<20 ND<200 ND<100 ND<100 ND<20 ND<100 ND<100 ND<200 ND<1,000 ND<100 ND<20 310 ND<100 ND<100 ND<20 10 (J) ND<20 ‐‐ ‐‐ ND<20 ND<20 1,600 ND<20 ND<20 ND<20 20 ND<20 ‐‐ ‐‐ ND<20 ND<20 1,600 ND<20 ND<20 ND<20 ND<20 ND<20 ‐‐ ‐‐ ND<20 ND<20 1,700 ND<20 ND<20 ND<20 30 20 ‐‐ ‐‐ ND<20 ND<20 1,900 ND<20 ND<20 ND<20 ND<20 ND<20 ‐‐ ‐‐ ND<20 ND<20 300 ND<20 ND<20 ND<20 ND<20 ND<20 ‐‐ ‐‐ ND<20 ND<20 490 ND<20 ND<20 ND<20 ND<20 ND<20 ‐‐ ‐‐ ND<20 ND<20 410 ND<20 ND<20 ND<20 ND<20 ND<20 ‐‐ ‐‐ ND<20 ND<20 490 ND<20 ND<20 ND<20 ND<20 ND<20 ‐‐ ‐‐ ND<20 ND<20 1,500 ND<20 ND<20 ND<20 ND<20 ND<20 ‐‐ ‐‐ ND<20 ND<20 360 ND<20 ND<20 ND<20 ND<20 10 (J) ‐‐ ‐‐ ND<20 ND<20 580 ND<20 ND<20 ND<20 ND<20 ND<20 ‐‐ ‐‐ ND<20 ND<20 330 ND<20 ND<20 ND<20 30 50 ND ND ND 260 3,000 ND ND 50 J = analyte detected at a concentration below the laboratory Reporting Limit; therefore, the result is an estimated concentration B‐03 = analyte present in the blank above the reported MDL but below the reporting limit ‐‐ = analyte not included in analysis Lot K probes are located on the east side of Heritage Road west of lots 50 through 52 Page 10 of 10 Trichloro‐ fluoro‐ methane Vinyl  Chloride (ug/m3) ND<100 ND<100 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<100 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 20 (ug/m3) ND<10 ND<10 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<10 ND<10 ND<10 ND<10 ND<10 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND Table 6 Inhalation of VOCs in Indoor Air from Soil Vapor ‐ Noncancer Hazards Sample Location Sample Name Sample Depth (feet bgs) Sample Type 5 25 5 25 5 25 5 25 5 25 5 25 5 25 5 25 5 30 5 25 5 25 5 25 5 22 5 25 5 30 5 06/27/2017 06/27/2017 06/27/2017 06/27/2017 07/18/2017 07/18/2017 07/18/2017 07/18/2017 06/27/2017 06/27/2017 06/27/2017 06/27/2017 06/27/2017 06/27/2017 06/27/2017 06/27/2017 06/26/2017 06/26/2017 06/26/2017 06/26/2017 06/26/2017 06/26/2017 07/18/2017 07/18/2017 06/28/2017 06/28/2017 07/18/2017 07/18/2017 07/18/2017 07/18/2017 06/27/2017 1,2,4‐Trimethyl‐ 1,3,5‐Trimethyl‐ benzene benzene Benzene Bromo‐dichloro‐ Carbon disulfide methane Chloroform Dibromo‐chloro‐ Ethyl‐benzene methane Isopropyl‐ benzene meta‐ and para‐ Xylenes Naphthalene n‐Butyl‐benzene n‐Propyl‐ benzene ortho‐Xylene p‐Isopropyl‐ toluene sec‐Butyl‐ benzene Tetrachloro‐ ethene Toluene Trichloro‐fluoro‐ methane RESIDENTIAL  SGP‐42‐5 SGP‐42‐25 SGP‐51‐5 SGP‐51‐25 SGP‐60‐5 SGP‐60‐25 SGP‐73‐5 SGP‐73‐25 SGP‐94‐5 SGP‐94‐25 SGP‐101‐5 SGP‐101‐25 SGP‐108‐5 SGP‐108‐25 SGP‐126‐5 SGP‐126‐25 SGP‐196‐5 SGP‐196‐30 SGP‐202‐5 SGP‐202‐25 SGP‐211‐5 SGP‐211‐25 SGP‐223‐5 SGP‐223‐25 SGP‐253‐5 SGP‐253‐22 SGP‐324‐5 SGP‐324‐25 SGP‐335‐5 SGP‐335‐30 SGP‐342‐5 SGP‐342‐32 SGP‐352‐5 SGP‐352‐25 SGP‐699‐5 SGP‐699‐25 SGP‐711‐5 SGP‐711‐8 SGP‐735‐5 SGP‐735‐15 SGP‐745‐5 SGP‐760‐5 SGP‐760‐20 SGP‐769‐5 SGP‐769‐15 SGP‐824‐5 SGP‐825‐5 SGP‐825‐12 SGP‐42‐5  3PV SGP‐42‐25  3PV SGP‐51‐5  3PV SGP‐51‐25  3PV SGP‐60‐5 SGP‐60‐25 SGP‐73‐5 SGP‐73‐25 SGP‐94‐5  3PV SGP‐94‐25  3PV SGP‐101‐5  3PV SGP‐101‐25  3PV SGP‐108‐5  3PV SGP‐108‐25  3PV SGP‐126‐5  3PV SGP‐126‐25  3PV SGP‐196‐5  3PV SGP‐196‐30  3PV SGP‐202‐5  3PV SGP‐202‐25  3PV SGP‐211‐5  3PV SGP‐211‐25  3PV SGP‐223‐5 SGP‐223‐25 SGP‐253‐5  3PV SGP‐253‐22  3PV SGP‐324‐5 SGP‐324‐25 SGP‐335‐5 SGP‐335‐30 SGP‐342‐5  3PV SGP‐342‐32  3PV 32 06/27/2017 SGP‐352‐5 5 07/18/2017 SGP‐352‐25 25 07/18/2017 5 06/28/2017 SGP‐699‐5  3PV 25 06/28/2017 SGP‐699‐25  3PV SGP‐711‐5  3PV 5 06/28/2017 SGP‐711‐8  3PV 8 06/28/2017 SGP‐735‐5  3PV 5 06/26/2017 SGP‐735‐15  3PV 15 06/26/2017 SGP‐745‐5  3PV 5 06/26/2017 5 06/26/2017 SGP‐760‐5  3PV 20 06/26/2017 SGP‐760‐20  3PV SGP‐769‐5  3PV 5 06/26/2017 15 06/26/2017 SGP‐769‐15  3PV SGP‐824‐5 5 07/17/2017 SGP‐825‐5 5 07/17/2017 SGP‐825‐12 12 07/17/2017 Maximum residential predicted noncancer hazard index by chemical 8.1E‐04 2.3E‐04 7.7E‐04 6.5E‐05 3.3E‐03 1.3E‐04 4.9E‐04 3.4E‐04 2.4E‐04 4.1E‐05 6.1E‐04 8.2E‐05 4.1E‐04 3.3E‐05 2.0E‐03 2.1E‐04 2.0E‐04 9.5E‐05 2.8E‐04 7.4E‐05 3.7E‐04 9.8E‐05 1.1E‐03 ‐‐ 1.7E‐03 4.1E‐05 4.5E‐04 ‐‐ 1.1E‐03 2.5E‐04 3.3E‐04 4.8E‐04 1.3E‐04 4.8E‐04 4.9E‐05 1.8E‐03 7.3E‐05 ‐‐ 2.1E‐04 1.2E‐04 2.4E‐05 4.2E‐04 6.1E‐05 2.4E‐04 1.2E‐05 1.5E‐03 1.5E‐04 6.1E‐05 7.1E‐05 1.2E‐04 4.9E‐05 2.4E‐04 6.1E‐05 6.1E‐04 ‐‐ 1.2E‐03 3.0E‐05 3.6E‐04 ‐‐ 4.8E‐04 1.5E‐04 1.8E‐04 2.3E‐03 9.6E‐04 6.9E‐03 4.8E‐04 3.4E‐03 ‐‐ 1.1E‐03 1.7E‐03 2.3E‐03 7.2E‐04 3.4E‐03 7.2E‐04 ‐‐ 2.4E‐04 1.1E‐02 3.1E‐03 ‐‐ 8.0E‐04 ‐‐ 4.8E‐04 ‐‐ 1.2E‐03 1.1E‐03 4.8E‐04 6.9E‐03 3.0E‐04 3.4E‐03 2.4E‐04 4.6E‐03 2.8E‐03 2.3E‐03 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 8.3E‐04 6.3E‐05 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 1.9E‐05 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 1.7E‐05 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 7.3E‐06 ‐‐ 5.1E‐06 ‐‐ 1.9E‐05 ‐‐ 2.1E‐05 ‐‐ ‐‐ 5.1E‐05 1.4E‐05 ‐‐ ‐‐ ‐‐ 7.1E‐06 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 1.3E‐05 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 1.8E‐04 1.9E‐05 ‐‐ ‐‐ 1.3E‐03 1.5E‐04 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 3.7E‐04 2.7E‐05 ‐‐ ‐‐ ‐‐ 3.8E‐05 9.4E‐06 5.7E‐05 3.3E‐06 9.5E‐05 ‐‐ ‐‐ 2.0E‐05 1.1E‐05 1.7E‐06 2.4E‐05 3.9E‐06 1.4E‐05 5.5E‐07 6.5E‐05 7.7E‐06 2.7E‐06 8.3E‐06 8.2E‐06 5.0E‐06 1.9E‐05 8.8E‐06 1.4E‐05 ‐‐ 4.9E‐05 1.4E‐06 4.3E‐05 ‐‐ 3.0E‐05 2.0E‐05 1.9E‐05 ‐‐ 1.2E‐06 6.1E‐06 7.3E‐06 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 6.1E‐06 ‐‐ ‐‐ ‐‐ 1.8E‐05 1.2E‐06 ‐‐ 1.0E‐06 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 1.2E‐05 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 1.6E‐03 4.0E‐04 2.1E‐03 1.2E‐04 3.3E‐03 7.2E‐05 2.7E‐04 7.2E‐04 4.3E‐04 7.2E‐05 1.1E‐03 1.5E‐04 5.2E‐04 2.8E‐05 2.6E‐03 3.3E‐04 1.4E‐04 2.9E‐04 3.3E‐04 1.8E‐04 7.9E‐04 3.1E‐04 9.2E‐04 4.4E‐05 2.3E‐03 4.1E‐05 1.4E‐03 3.9E‐05 1.2E‐03 6.4E‐04 6.5E‐04 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 2.2E‐05 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 1.1E‐05 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 9.7E‐06 2.4E‐06 9.7E‐06 9.7E‐07 3.1E‐05 ‐‐ ‐‐ 5.3E‐06 2.4E‐06 ‐‐ 7.3E‐06 9.7E‐07 4.8E‐06 ‐‐ 1.9E‐05 1.9E‐06 ‐‐ 1.2E‐06 ‐‐ ‐‐ 4.8E‐06 1.5E‐06 9.7E‐06 ‐‐ 1.7E‐05 ‐‐ ‐‐ ‐‐ ‐‐ 3.2E‐06 4.8E‐06 5.5E‐04 1.4E‐04 6.0E‐04 3.9E‐05 1.3E‐03 2.8E‐05 1.1E‐04 2.1E‐04 1.4E‐04 1.7E‐05 3.6E‐04 5.0E‐05 1.9E‐04 1.1E‐05 7.9E‐04 8.9E‐05 5.5E‐05 8.3E‐05 1.1E‐04 6.1E‐05 2.5E‐04 8.9E‐05 4.4E‐04 ‐‐ 7.7E‐04 1.4E‐05 3.3E‐04 ‐‐ 4.4E‐04 1.9E‐04 2.2E‐04 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 3.8E‐04 9.0E‐05 6.7E‐04 2.7E‐05 3.9E‐04 3.8E‐05 ‐‐ 1.8E‐04 1.2E‐04 2.1E‐05 2.7E‐04 3.8E‐05 1.0E‐04 6.3E‐06 7.1E‐04 1.2E‐04 3.0E‐05 9.0E‐05 6.1E‐05 4.4E‐05 1.5E‐04 1.0E‐04 ‐‐ ‐‐ 4.8E‐04 1.0E‐05 2.8E‐04 ‐‐ 1.9E‐04 1.7E‐04 1.6E‐04 4.3E‐06 8.8E‐07 2.2E‐06 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 4.4E‐07 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 6.8E‐06 1.1E‐03 2.0E‐04 1.8E‐03 2.3E‐04 4.1E‐05 ‐‐ 4.1E‐05 1.4E‐05 9.0E‐04 2.4E‐04 7.2E‐05 2.8E‐04 4.1E‐05 6.5E‐04 5.7E‐04 1.6E‐04 3.3E‐03 ‐‐ 4.2E‐04 1.1E‐04 1.3E‐03 1.7E‐04 ‐‐ ‐‐ ‐‐ ‐‐ 4.8E‐04 1.2E‐04 4.6E‐05 1.8E‐04 2.0E‐05 3.6E‐04 ‐‐ ‐‐ 1.8E‐03 ‐‐ 2.3E‐03 7.2E‐04 1.1E‐02 2.1E‐03 ‐‐ ‐‐ ‐‐ ‐‐ 4.6E‐03 ‐‐ 6.0E‐04 2.3E‐03 ‐‐ 1.1E‐03 1.1E‐03 5.9E‐04 1.1E‐02 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 8.3E‐04 ‐‐ ‐‐ ‐‐ 4.0E‐05 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 5.1E‐05 5.3E‐06 ‐‐ 6.3E‐06 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 9.2E‐05 1.6E‐05 1.3E‐03 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 3.7E‐04 ‐‐ 1.9E‐05 8.8E‐06 5.7E‐05 8.3E‐06 ‐‐ ‐‐ ‐‐ ‐‐ 5.2E‐05 1.1E‐05 6.9E‐06 1.6E‐05 1.8E‐06 1.1E‐05 ‐‐ ‐‐ 9.5E‐05 ‐‐ ‐‐ ‐‐ 1.2E‐05 2.4E‐06 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 1.8E‐05 9.2E‐06 8.7E‐04 3.3E‐04 2.4E‐03 3.4E‐04 ‐‐ ‐‐ 5.4E‐05 ‐‐ 2.1E‐03 4.9E‐04 2.6E‐04 6.5E‐04 6.4E‐05 5.2E‐04 2.4E‐04 1.1E‐04 3.3E‐03 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 1.1E‐05 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 2.2E‐05 ‐‐ ‐‐ 1.9E‐06 1.9E‐05 2.4E‐06 ‐‐ ‐‐ ‐‐ ‐‐ 9.7E‐06 2.4E‐06 1.2E‐06 2.4E‐06 ‐‐ ‐‐ ‐‐ ‐‐ 3.1E‐05 ‐‐ 3.8E‐04 1.2E‐04 7.4E‐04 9.4E‐05 ‐‐ ‐‐ ‐‐ ‐‐ 1.3E‐03 1.4E‐04 5.6E‐05 1.9E‐04 1.8E‐05 2.5E‐04 ‐‐ ‐‐ 1.3E‐03 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 5.4E‐06 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 5.4E‐06 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 2.0E‐05 ‐‐ ‐‐ ‐‐ 2.0E‐05 1.7E‐06 1.2E‐04 5.0E‐05 6.6E‐04 1.0E‐04 ‐‐ ‐‐ 1.0E‐05 3.5E‐06 4.8E‐04 9.1E‐05 7.8E‐05 1.6E‐04 1.7E‐05 9.1E‐05 ‐‐ ‐‐ 7.1E‐04 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 4.3E‐06 3.4E‐05 2.1E‐05 5.3E‐05 9.7E‐06 7.7E‐05 1.8E‐05 7.7E‐05 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 2.7E‐04 4.7E‐05 2.7E‐04 7.1E‐05 4.1E‐04 1.1E‐04 4.1E‐04 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 1.3E‐06 3.3E‐07 1.6E‐06 5.7E‐07 1.6E‐06 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 2.9E‐05 2.1E‐05 7.1E‐05 1.4E‐05 7.4E‐05 2.6E‐05 7.4E‐05 4.9E‐04 6.5E‐05 ‐‐ 4.9E‐05 ‐‐ ‐‐ 4.9E‐04 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 9.9E‐06 2.9E‐05 5.8E‐06 3.6E‐05 9.9E‐06 3.6E‐05 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 3.7E‐06 1.2E‐05 3.4E‐06 1.7E‐05 6.5E‐06 1.7E‐05 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ COMMERCIAL  SGP‐816‐3 SGP‐817‐5 SGP‐817‐5 SGP‐817‐10 SGP‐818‐5 SGP‐818‐10 SGP‐816‐3 3 07/17/2017 SGP‐817‐5 5 07/17/2017 SGP‐817‐5 REP 5 07/17/2017 SGP‐817‐10 10 07/17/2017 SGP‐818‐5 5 07/17/2017 SGP‐818‐10 10 07/17/2017 Maximum commercial predicted noncancer hazard index by chemical NONCANCER TOXICITY CRITERIA a Inhalation Reference Concentration (RfC) (μg/m3) Source 6.0E+01 4.0E+01 3.0E+00 8.0E+01 7.0E+02 9.8E+01 8.0E+01 1.0E+03 4.0E+02 1.0E+02 3.0E+00 2.0E+02 1.0E+03 1.0E+02 ‐‐ 4.0E+02 3.5E+01 3.0E+02 1.2E+03 USEPA, 2017b DTSC, 2017 OEHHA, 2017 DTSC, 2017 USEPA, 2017b USEPA, 2017a DTSC, 2017 USEPA, 2017b USEPA, 2017b USEPA, 2017a USEPA, 2017b DTSC, 2017 USEPA, 2017a USEPA, 2017a ‐‐ DTSC, 2017 OEHHA, 2017 OEHHA, 2017 DTSC, 2017 Page 1 of 2 Table 6 Inhalation of VOCs in Indoor Air from Soil Vapor ‐ Noncancer Hazards Sample Location Sample Name Sample Depth (feet bgs) Sample Type Total Noncancer  Hazard Index b 5 25 5 25 5 25 5 25 5 25 5 25 5 25 5 25 5 30 5 25 5 25 5 25 5 22 5 25 5 30 5 06/27/2017 06/27/2017 06/27/2017 06/27/2017 07/18/2017 07/18/2017 07/18/2017 07/18/2017 06/27/2017 06/27/2017 06/27/2017 06/27/2017 06/27/2017 06/27/2017 06/27/2017 06/27/2017 06/26/2017 06/26/2017 06/26/2017 06/26/2017 06/26/2017 06/26/2017 07/18/2017 07/18/2017 06/28/2017 06/28/2017 07/18/2017 07/18/2017 07/18/2017 07/18/2017 06/27/2017 6.1E‐03 2.0E‐03 1.2E‐02 8.1E‐04 1.4E‐02 3.4E‐04 2.0E‐03 3.4E‐03 3.4E‐03 9.1E‐04 6.2E‐03 1.1E‐03 1.5E‐03 3.3E‐04 1.9E‐02 4.0E‐03 4.9E‐04 1.4E‐03 9.1E‐04 9.1E‐04 1.8E‐03 1.9E‐03 4.5E‐03 5.4E‐04 1.3E‐02 4.5E‐04 8.8E‐03 5.1E‐04 8.0E‐03 4.2E‐03 3.9E‐03 RESIDENTIAL  SGP‐42‐5 SGP‐42‐25 SGP‐51‐5 SGP‐51‐25 SGP‐60‐5 SGP‐60‐25 SGP‐73‐5 SGP‐73‐25 SGP‐94‐5 SGP‐94‐25 SGP‐101‐5 SGP‐101‐25 SGP‐108‐5 SGP‐108‐25 SGP‐126‐5 SGP‐126‐25 SGP‐196‐5 SGP‐196‐30 SGP‐202‐5 SGP‐202‐25 SGP‐211‐5 SGP‐211‐25 SGP‐223‐5 SGP‐223‐25 SGP‐253‐5 SGP‐253‐22 SGP‐324‐5 SGP‐324‐25 SGP‐335‐5 SGP‐335‐30 SGP‐342‐5 SGP‐342‐32 SGP‐352‐5 SGP‐352‐25 SGP‐699‐5 SGP‐699‐25 SGP‐711‐5 SGP‐711‐8 SGP‐735‐5 SGP‐735‐15 SGP‐745‐5 SGP‐760‐5 SGP‐760‐20 SGP‐769‐5 SGP‐769‐15 SGP‐824‐5 SGP‐825‐5 SGP‐825‐12 SGP‐42‐5  3PV SGP‐42‐25  3PV SGP‐51‐5  3PV SGP‐51‐25  3PV SGP‐60‐5 SGP‐60‐25 SGP‐73‐5 SGP‐73‐25 SGP‐94‐5  3PV SGP‐94‐25  3PV SGP‐101‐5  3PV SGP‐101‐25  3PV SGP‐108‐5  3PV SGP‐108‐25  3PV SGP‐126‐5  3PV SGP‐126‐25  3PV SGP‐196‐5  3PV SGP‐196‐30  3PV SGP‐202‐5  3PV SGP‐202‐25  3PV SGP‐211‐5  3PV SGP‐211‐25  3PV SGP‐223‐5 SGP‐223‐25 SGP‐253‐5  3PV SGP‐253‐22  3PV SGP‐324‐5 SGP‐324‐25 SGP‐335‐5 SGP‐335‐30 SGP‐342‐5  3PV SGP‐342‐32  3PV 32 06/27/2017 SGP‐352‐5 5 07/18/2017 SGP‐352‐25 25 07/18/2017 5 06/28/2017 SGP‐699‐5  3PV 25 06/28/2017 SGP‐699‐25  3PV SGP‐711‐5  3PV 5 06/28/2017 SGP‐711‐8  3PV 8 06/28/2017 SGP‐735‐5  3PV 5 06/26/2017 SGP‐735‐15  3PV 15 06/26/2017 SGP‐745‐5  3PV 5 06/26/2017 5 06/26/2017 SGP‐760‐5  3PV 20 06/26/2017 SGP‐760‐20  3PV SGP‐769‐5  3PV 5 06/26/2017 15 06/26/2017 SGP‐769‐15  3PV SGP‐824‐5 5 07/17/2017 SGP‐825‐5 5 07/17/2017 SGP‐825‐12 12 07/17/2017 Maximum residential predicted noncancer hazard index by chemical 2.3E‐05 5.2E‐03 1.5E‐03 1.9E‐02 3.1E‐03 4.1E‐05 0.0E+00 1.1E‐04 1.7E‐05 9.8E‐03 1.1E‐03 1.1E‐03 3.8E‐03 1.8E‐04 3.0E‐03 2.1E‐03 8.8E‐04 1.9E‐02 Note: Bolded values indicate results above a hazard index of 1. Abbreviations: ‐‐ = not available/applicable feet bgs = feet below ground surface μg/m3 = micrograms per cubic meter Footnotes: a  The noncancer toxicity criteria are from the following sources: DTSC, 2017: Department of Toxic Substances Control (DTSC), DTSC‐ Modified Screening Levels (DTSC‐SLs). June 2017. OEHHA, 2017: Office of Environmental Health Hazard Assessment (OEHHA), Toxicity Criteria Database  (http://www.oehha.ca.gov/tcdb/). Accessed July 2017. USEPA, 2017a: United States Environmental Protection Agency (USEPA), Region 9 Regional Screening Levels  (http://www.epa.gov/region9/superfund/prg/). June 2017. USEPA, 2017b: USEPA, Integrated Risk Information System (http://www.epa.gov/iris/). Accessed July 2017. b  The total noncancer hazard index for each sample is the sum of the chemical specific noncancer hazard index c  The indoor air concentrations (Cair) from Table E‐2. d  The parameters are from the following source: DTSC, 2014: Department of Toxic Substances Control (DTSC), 2014. Recommended DTSC Default Exposure Factors for Use in Risk  Assessment at California Hazardous Waste Sites and Permitted Facilities, Office of Human and Ecological Risk (HERO), HERO  Human Health Risk Assessment (HHRA) Note Number: 1, Issue Date: September 30, 2014. DTSC, 2015: DTSC, 2015. Preliminary Endangerment Assessment Guidance Manual, California Environmental Protection Agency,  January 1994, Revised October 2015. e  The averaging time for noncancer based on the exposure duration for each receptor (ED x 365 days/year x 24 hours/day). Equation c Noncancer Exposure Concentration (EC) (μg/m3) = (Cair x ET x EF x ED) / ATnc Noncancer Hazard Index = EC (μg/m3) / RfC (μg/m3) Parameter Exposure Frequency Residential Commercial Exposure Time Residential Commercial Exposure Duration Residential‐child Commercial Averaging Time‐Noncancer Residential‐child e Commercial Symbol Values Units Source d EFr EFc 350 250 days/year days/year DTSC, 2014 DTSC, 2014 ETr ETc 24 8 hour/day hour/day DTSC, 2014 DTSC, 2014 EDr EDc 6 25 years years DTSC, 2014 & 2015 DTSC, 2014 ATnc‐r ATnc‐c 52560 219000 hours hours DTSC, 2014 DTSC, 2014 COMMERCIAL  SGP‐816‐3 SGP‐817‐5 SGP‐817‐5 SGP‐817‐10 SGP‐818‐5 SGP‐818‐10 SGP‐816‐3 3 07/17/2017 SGP‐817‐5 5 07/17/2017 SGP‐817‐5 REP 5 07/17/2017 SGP‐817‐10 10 07/17/2017 SGP‐818‐5 5 07/17/2017 SGP‐818‐10 10 07/17/2017 Maximum commercial predicted noncancer hazard index by chemical 8.2E‐04 1.7E‐04 4.4E‐04 1.5E‐04 6.1E‐04 1.7E‐04 8.2E‐04 NONCANCER TOXICITY CRITERIA a Inhalation Reference Concentration (RfC) (μg/m3) Source ‐‐ ‐‐ Page 2 of 2 Table 7 Inhalation of VOCs in Indoor Air from Soil Vapor ‐ Cancer Risks Sample Location Sample Name Sample Depth (feet bgs) Sample Type 1,2,4‐Trimethyl‐ 1,3,5‐Trimethyl‐ benzene benzene Benzene Bromo‐dichloro‐ Carbon disulfide methane Chloroform Dibromo‐chloro‐ Ethyl‐benzene methane Isopropyl‐ benzene meta‐ and para‐ Xylenes Naphthalene n‐Butyl‐benzene n‐Propyl‐ benzene ortho‐Xylene p‐Isopropyl‐ toluene sec‐Butyl‐ benzene Tetrachloro‐ ethene Toluene Trichloro‐fluoro‐ methane ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ RESIDENTIAL SGP‐42‐5 SGP‐42‐25 SGP‐51‐5 SGP‐51‐25 SGP‐60‐5 SGP‐60‐25 SGP‐73‐5 SGP‐73‐25 SGP‐94‐5 SGP‐94‐25 SGP‐101‐5 SGP‐101‐25 SGP‐108‐5 SGP‐108‐25 SGP‐126‐5 SGP‐126‐25 SGP‐196‐5 SGP‐196‐30 SGP‐202‐5 SGP‐202‐25 SGP‐211‐5 SGP‐211‐25 SGP‐223‐5 SGP‐223‐25 SGP‐253‐5 SGP‐253‐22 SGP‐324‐5 SGP‐324‐25 SGP‐335‐5 SGP‐335‐30 SGP‐342‐5 SGP‐342‐32 SGP‐352‐5 SGP‐352‐25 SGP‐699‐5 SGP‐699‐25 SGP‐711‐5 SGP‐711‐8 SGP‐735‐5 SGP‐735‐15 SGP‐42‐5  3PV SGP‐42‐25  3PV SGP‐51‐5  3PV SGP‐51‐25  3PV SGP‐60‐5 SGP‐60‐25 SGP‐73‐5 SGP‐73‐25 SGP‐94‐5  3PV SGP‐94‐25  3PV SGP‐101‐5  3PV SGP‐101‐25  3PV SGP‐108‐5  3PV SGP‐108‐25  3PV SGP‐126‐5  3PV SGP‐126‐25  3PV SGP‐196‐5  3PV SGP‐196‐30  3PV SGP‐202‐5  3PV SGP‐202‐25  3PV SGP‐211‐5  3PV SGP‐211‐25  3PV SGP‐223‐5 SGP‐223‐25 SGP‐253‐5  3PV SGP‐253‐22  3PV SGP‐324‐5 SGP‐324‐25 SGP‐335‐5 SGP‐335‐30 SGP‐342‐5  3PV SGP‐342‐32  3PV SGP‐352‐5 SGP‐352‐25 SGP‐699‐5  3PV SGP‐699‐25  3PV SGP‐711‐5  3PV SGP‐711‐8  3PV SGP‐735‐5  3PV 5 25 5 25 5 25 5 25 5 25 5 25 5 25 5 25 5 30 5 25 5 25 5 25 5 22 5 25 5 30 5 32 5 25 5 25 5 8 5 06/27/2017 06/27/2017 06/27/2017 06/27/2017 07/18/2017 07/18/2017 07/18/2017 07/18/2017 06/27/2017 06/27/2017 06/27/2017 06/27/2017 06/27/2017 06/27/2017 06/27/2017 06/27/2017 06/26/2017 06/26/2017 06/26/2017 06/26/2017 06/26/2017 06/26/2017 07/18/2017 07/18/2017 06/28/2017 06/28/2017 07/18/2017 07/18/2017 07/18/2017 07/18/2017 06/27/2017 06/27/2017 07/18/2017 07/18/2017 06/28/2017 06/28/2017 06/28/2017 06/28/2017 06/26/2017 SGP‐735‐15  3PV 15 06/26/2017 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ SGP‐745‐5 SGP‐760‐5 SGP‐760‐20 SGP‐769‐5 SGP‐769‐15 SGP‐824‐5 SGP‐825‐5 SGP‐825‐12 SGP‐745‐5  3PV 5 06/26/2017 SGP‐760‐5  3PV 5 06/26/2017 20 06/26/2017 SGP‐760‐20  3PV 5 06/26/2017 SGP‐769‐5  3PV 15 06/26/2017 SGP‐769‐15  3PV SGP‐824‐5 5 07/17/2017 SGP‐825‐5 5 07/17/2017 SGP‐825‐12 12 07/17/2017 Maximum residential predicted cancer risk by chemical ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 1.5E‐07 ‐‐ 1.9E‐08 7.4E‐08 ‐‐ 3.7E‐08 3.7E‐08 1.9E‐08 4.E‐07 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 9.E‐07 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 7.7E‐08 1.3E‐08 1.E‐06 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 2.E‐07 4.8E‐08 1.0E‐08 6.4E‐09 1.5E‐08 1.7E‐09 1.0E‐08 ‐‐ ‐‐ 9.E‐08 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 1.5E‐09 ‐‐ ‐‐ ‐‐ 2.E‐09 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ SGP‐816‐3 3 07/17/2017 SGP‐817‐5 5 07/17/2017 SGP‐817‐5 REP 5 07/17/2017 SGP‐817‐10 10 07/17/2017 SGP‐818‐5 5 07/17/2017 SGP‐818‐10 10 07/17/2017 Maximum predicted cancer risk by chemical ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 8.5E‐09 1.5E‐09 8.5E‐09 2.2E‐09 1.3E‐08 3.3E‐09 1.E‐08 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 1.2E‐09 2.9E‐10 1.4E‐09 5.1E‐10 1.E‐09 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 1.8E‐08 2.4E‐09 ‐‐ 1.8E‐09 ‐‐ ‐‐ 2.E‐08 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 7.4E‐08 3.1E‐08 2.2E‐07 1.5E‐08 1.1E‐07 ‐‐ 3.7E‐08 5.4E‐08 7.4E‐08 2.3E‐08 1.1E‐07 2.3E‐08 ‐‐ 7.7E‐09 3.7E‐07 1.0E‐07 ‐‐ 2.6E‐08 ‐‐ 1.5E‐08 ‐‐ 3.9E‐08 3.7E‐08 1.5E‐08 2.2E‐07 9.6E‐09 1.1E‐07 7.7E‐09 1.5E‐07 9.0E‐08 7.4E‐08 ‐‐ 7.4E‐08 2.3E‐08 3.7E‐07 6.9E‐08 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 9.1E‐07 6.9E‐08 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 1.1E‐08 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 1.5E‐07 1.6E‐08 ‐‐ ‐‐ 1.1E‐06 1.2E‐07 ‐‐ ‐‐ ‐‐ 4.4E‐09 ‐‐ 5.3E‐09 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 2.3E‐07 1.7E‐08 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 3.5E‐08 8.7E‐09 5.3E‐08 3.1E‐09 8.8E‐08 ‐‐ ‐‐ 1.9E‐08 1.0E‐08 1.5E‐09 2.3E‐08 3.6E‐09 1.3E‐08 5.1E‐10 6.1E‐08 7.2E‐09 2.5E‐09 7.7E‐09 7.6E‐09 4.6E‐09 1.8E‐08 8.2E‐09 1.3E‐08 ‐‐ 4.5E‐08 1.3E‐09 4.0E‐08 ‐‐ 2.8E‐08 1.8E‐08 1.8E‐08 ‐‐ 1.8E‐08 8.2E‐09 5.3E‐08 7.7E‐09 ‐‐ ‐‐ ‐‐ COMMERCIAL SGP‐816‐3 SGP‐817‐5 SGP‐817‐5 SGP‐817‐10 SGP‐818‐5 SGP‐818‐10 CANCER TOXICITY CRITERIA a Inhalation Unit Risk Factor (IUR) (μg/m3)‐1 ‐‐ ‐‐ 2.9E‐05 3.7E‐05 ‐‐ 2.3E‐05 2.1E‐05 2.5E‐06 ‐‐ ‐‐ 3.4E‐05 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 6.1E‐06 ‐‐ ‐‐ Source ‐‐ ‐‐ OEHHA, 2017 OEHHA, 2017 ‐‐ USEPA, 2017b DTSC, 2017 OEHHA, 2017 ‐‐ ‐‐ OEHHA, 2017 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ OEHHA, 2017 ‐‐ ‐‐ Page 1 of 2 Table 7 Inhalation of VOCs in Indoor Air from Soil Vapor ‐ Cancer Risks Sample Location Sample Name Sample Depth (feet bgs) Sample Type Total Cancer Risk b RESIDENTIAL SGP‐42‐5 SGP‐42‐25 SGP‐51‐5 SGP‐51‐25 SGP‐60‐5 SGP‐60‐25 SGP‐73‐5 SGP‐73‐25 SGP‐94‐5 SGP‐94‐25 SGP‐101‐5 SGP‐101‐25 SGP‐108‐5 SGP‐108‐25 SGP‐126‐5 SGP‐126‐25 SGP‐196‐5 SGP‐196‐30 SGP‐202‐5 SGP‐202‐25 SGP‐211‐5 SGP‐211‐25 SGP‐223‐5 SGP‐223‐25 SGP‐253‐5 SGP‐253‐22 SGP‐324‐5 SGP‐324‐25 SGP‐335‐5 SGP‐335‐30 SGP‐342‐5 SGP‐342‐32 SGP‐352‐5 SGP‐352‐25 SGP‐699‐5 SGP‐699‐25 SGP‐711‐5 SGP‐711‐8 SGP‐735‐5 SGP‐735‐15 SGP‐42‐5  3PV SGP‐42‐25  3PV SGP‐51‐5  3PV SGP‐51‐25  3PV SGP‐60‐5 SGP‐60‐25 SGP‐73‐5 SGP‐73‐25 SGP‐94‐5  3PV SGP‐94‐25  3PV SGP‐101‐5  3PV SGP‐101‐25  3PV SGP‐108‐5  3PV SGP‐108‐25  3PV SGP‐126‐5  3PV SGP‐126‐25  3PV SGP‐196‐5  3PV SGP‐196‐30  3PV SGP‐202‐5  3PV SGP‐202‐25  3PV SGP‐211‐5  3PV SGP‐211‐25  3PV SGP‐223‐5 SGP‐223‐25 SGP‐253‐5  3PV SGP‐253‐22  3PV SGP‐324‐5 SGP‐324‐25 SGP‐335‐5 SGP‐335‐30 SGP‐342‐5  3PV SGP‐342‐32  3PV SGP‐352‐5 SGP‐352‐25 SGP‐699‐5  3PV SGP‐699‐25  3PV SGP‐711‐5  3PV SGP‐711‐8  3PV SGP‐735‐5  3PV 5 25 5 25 5 25 5 25 5 25 5 25 5 25 5 25 5 30 5 25 5 25 5 25 5 22 5 25 5 30 5 32 5 25 5 25 5 8 5 06/27/2017 06/27/2017 06/27/2017 06/27/2017 07/18/2017 07/18/2017 07/18/2017 07/18/2017 06/27/2017 06/27/2017 06/27/2017 06/27/2017 06/27/2017 06/27/2017 06/27/2017 06/27/2017 06/26/2017 06/26/2017 06/26/2017 06/26/2017 06/26/2017 06/26/2017 07/18/2017 07/18/2017 06/28/2017 06/28/2017 07/18/2017 07/18/2017 07/18/2017 07/18/2017 06/27/2017 06/27/2017 07/18/2017 07/18/2017 06/28/2017 06/28/2017 06/28/2017 06/28/2017 06/26/2017 SGP‐735‐15  3PV 15 06/26/2017 1.1E‐07 4.0E‐08 2.7E‐07 1.9E‐08 2.0E‐07 0.0E+00 3.7E‐08 8.4E‐08 8.4E‐08 2.5E‐08 1.3E‐07 2.7E‐08 1.3E‐08 8.2E‐09 4.3E‐07 1.1E‐07 2.5E‐09 3.3E‐08 7.6E‐09 2.0E‐08 1.8E‐08 4.7E‐08 2.0E‐07 3.1E‐08 2.7E‐07 1.1E‐08 2.4E‐06 2.1E‐07 1.8E‐07 1.1E‐07 9.2E‐08 4.4E‐09 9.2E‐08 3.7E‐08 4.2E‐07 7.7E‐08 0.0E+00 0.0E+00 0.0E+00 0.0E+00 SGP‐745‐5 SGP‐760‐5 SGP‐760‐20 SGP‐769‐5 SGP‐769‐15 SGP‐824‐5 SGP‐825‐5 SGP‐825‐12 SGP‐745‐5  3PV 5 06/26/2017 SGP‐760‐5  3PV 5 06/26/2017 20 06/26/2017 SGP‐760‐20  3PV 5 06/26/2017 SGP‐769‐5  3PV 15 06/26/2017 SGP‐769‐15  3PV SGP‐824‐5 5 07/17/2017 SGP‐825‐5 5 07/17/2017 SGP‐825‐12 12 07/17/2017 Maximum residential predicted cancer risk by chemical 2.0E‐07 1.0E‐08 2.6E‐08 8.9E‐08 3.3E‐09 4.7E‐08 1.1E‐07 3.2E‐08 2.4E‐06 SGP‐816‐3 3 07/17/2017 SGP‐817‐5 5 07/17/2017 SGP‐817‐5 REP 5 07/17/2017 SGP‐817‐10 10 07/17/2017 SGP‐818‐5 5 07/17/2017 SGP‐818‐10 10 07/17/2017 Maximum predicted cancer risk by chemical 2.6E‐08 3.8E‐09 9.6E‐09 4.3E‐09 1.4E‐08 3.8E‐09 2.6E‐08 COMMERCIAL SGP‐816‐3 SGP‐817‐5 SGP‐817‐5 SGP‐817‐10 SGP‐818‐5 SGP‐818‐10 Note: Bolded values indicates results above the de minimis risk level (1x10‐6). Abbreviations: ‐‐ = not available/applicable feet bgs = feet below ground surface μg/m3 = micrograms per cubic meter Footnotes: a  The noncancer toxicity criteria are from the following sources: DTSC, 2017: Department of Toxic Substances Control (DTSC), DTSC‐ Modified Screening Levels (DTSC‐SLs). June 2017. OEHHA, 2017: Office of Environmental Health Hazard Assessment (OEHHA), Toxicity Criteria Database  (http://www.oehha.ca.gov/tcdb/). Accessed July 2017. USEPA, 2017a: United States Environmental Protection Agency (USEPA), Region 9 Regional Screening Levels  (http://www.epa.gov/region9/superfund/prg/). June 2017. USEPA, 2017b: USEPA, Integrated Risk Information System (http://www.epa.gov/iris/). Accessed July 2017. b  The total cancer risk for each sample is the sum of the chemical specific cancer risk c  The indoor air concentrations (Cair) from Table E‐2. d  The parameters are from the following source: DTSC, 2014: Department of Toxic Substances Control (DTSC), 2014. Recommended DTSC Default Exposure Factors for Use in Risk  Assessment at California Hazardous Waste Sites and Permitted Facilities, Office of Human and Ecological Risk (HERO), HERO  Human Health Risk Assessment (HHRA) Note Number: 1, Issue Date: September 30, 2014. DTSC, 2015: DTSC, 2015. Preliminary Endangerment Assessment Guidance Manual, California Environmental Protection Agency,  January 1994, Revised October 2015. USEPA, 2005: USEPA, 2005. Guidelines for Carcinogen Risk Assessment, Final, EPA/630/R‐03/001F, March. e  The averaging time for cancer is based on a lifetime exposure of 70 years (70 years x 365 days/year x 24 hours/day) Equations c Carcinogen Exposure Concentration (EC) Residential EC (μg/m3) = Cair x EF x ET x (EDrc + EDra) / ATc  Commercial EC (μg/m3) = Cair x EF x ET x EDc / ATc  Mutagenic Exposure Concentration (ECm) ECm (μg/m3) = Cair x ET x EF x (EDc_0‐2 x 10 + EDc_2‐16 x 3 + EDc_16‐26) / ATca  Cancer Risk / Mutagenic Cancer Risk (CR) CR = EC (μg/m3) x IUR (μg/m3)‐1 Parameter Exposure Frequency Residential Commercial Exposure Time Residential Commercial Exposure Duration Residential‐child Residential‐adult Residential‐child 0 to 2  Residential‐child 2 to 16  Residential‐adult 16 to 26 Commercial Averaging Time‐Cancer e Symbol Values Units Source d EFr EFc 350 250 days/year days/year DTSC, 2014 DTSC, 2014 ETr ETc 24 8 hour/day hour/day DTSC, 2014 DTSC, 2014 EDrc EDra EDrc_0‐2 EDrc_2‐16 EDra_16‐26 EDc ATc 6 20 2 14 10 25 613200 years years years years years years hours DTSC, 2014 & 2015 DTSC, 2014 & 2015 USEPA, 2005 USEPA, 2005 USEPA, 2005 USEPA, 2005 DTSC, 2014 CANCER TOXICITY CRITERIA a Inhalation Unit Risk Factor (IUR) (μg/m3)‐1 ‐‐ Source ‐‐ Page 2 of 2 Site Assessment and Human Health Vapor Risk Assessment Report  Otay Ranch Village 3, Heritage Road, Chula Vista, CA  August 17, 2017                      APPENDICES      This page intentionally left blank Site Assessment and Human Health Vapor Risk Assessment Report  Otay Ranch Village 3, Heritage Road, Chula Vista, CA  August 17, 2017                      APPENDIX A  GROUNDWATER LABORATORY ANALYTICAL RESULTS‐STORM DRAIN UTILITY TRENCH    This page intentionally left blank EnviroMatrix Analytical, Inc. 15 May 2017 TRC Solutions Attn: Gary McCue 4393 Viewridge Avenue. Suite A San Diego, CA 92123 EMA Log #: 17E0455 Project Name: Otay Ranch Village III Project Desc./#:278938.9990 Enclosed are the results of analyses for samples received by the laboratory on 05/12/17 11:50. Samples were analyzed pursuant to client request utilizing EPA or other ELAP approved methodologies. I certify that this data is in compliance both technically and for completeness. Dan Verdon Laboratory Director CA ELAP Certification #: 2564 4340 Viewridge Avenue, Suite A - San Diego, California 92123 - (858) 560-7717 - Fax (858) 560-7763 Analytical Chemistry Laboratory EMA Log #: 17E0455 Client Name: TRC Solutions Project Name: Otay Ranch Village III ANALYTICAL REPORT FOR SAMPLES Sample ID Laboratory ID Matrix Date Sampled Date Received GW-01 17E0455-01 Grnd-Water 05/12/17 08:20 05/12/17 11:50 GW-2 17E0455-02 Grnd-Water 05/12/17 09:00 05/12/17 11:50 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. EnviroMatrix Analytical, Inc. Page 2 of 16 EMA Log #: 17E0455 Client Name: TRC Solutions Project Name: Otay Ranch Village III Volatile Organic Compounds by EPA Method 8260B Analyte Result Reporting Limit Units Dilution Batch Prepared Analyzed Method Notes GW-01 (17E0455-01) Grnd-Water Sampled: 05/12/17 08:20 Received: 05/12/17 11:50 Acetone Acetonitrile Acrolein Acrylonitrile Allyl chloride Benzene Bromobenzene Bromochloromethane Bromodichloromethane Bromoform Bromomethane 2-Butanone n-Butylbenzene sec-Butylbenzene tert-Butylbenzene Carbon disulfide Carbon tetrachloride Chlorobenzene Chlorodibromomethane Chloroethane 2-Chloroethylvinyl ether Chloroform Chloromethane 2-Chlorotoluene 4-Chlorotoluene 1,2-Dibromo-3-chloropropane 1,2-Dibromoethane (EDB) Dibromomethane 1,2-Dichlorobenzene 1,3-Dichlorobenzene 1,4-Dichlorobenzene trans-1,4-Dichloro-2-butene Dichlorodifluoromethane 1,1-Dichloroethane 1,2-Dichloroethane 1,1-Dichloroethene cis-1,2-Dichloroethene trans-1,2-Dichloroethene 1,2-Dichloropropane 1,3-Dichloropropane 2,2-Dichloropropane 1,1-Dichloropropene ND ND ND ND ND 126 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 3.56 ND ND ND ND ND ND ND 25.0 50.0 100 10.0 1.00 10.0 1.00 1.00 1.00 1.00 2.00 25.0 1.00 1.00 1.00 1.00 0.50 1.00 1.00 2.00 2.00 1.00 2.00 1.00 1.00 2.00 1.00 1.00 1.00 1.00 1.00 2.00 2.00 1.00 0.50 1.00 1.00 1.00 1.00 1.00 1.00 1.00 ug/l " " " " 1 " " " " 7051301 " " " " 05/13/17 " " " " 05/13/17 " " " " EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " 10 1 " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " 05/13/17 05/13/17 " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " The results in this report apply to the samples analyzed in accordance with the chain of custody document. 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Page 3 of 16 EMA Log #: 17E0455 Client Name: TRC Solutions Project Name: Otay Ranch Village III Volatile Organic Compounds by EPA Method 8260B Analyte Result Reporting Limit Units Dilution Batch Prepared Analyzed Method EPA 8260B " " Notes GW-01 (17E0455-01) Grnd-Water Sampled: 05/12/17 08:20 Received: 05/12/17 11:50 cis-1,3-Dichloropropene trans-1,3-Dichloropropene Diethyl ether Ethylbenzene Hexachlorobutadiene Hexachloroethane 2-Hexanone Iodomethane Isopropylbenzene Methylene chloride Methyl tert-butyl ether 4-Methyl-2-pentanone Naphthalene n-Propylbenzene Styrene 1,1,1,2-Tetrachloroethane 1,1,2,2-Tetrachloroethane Tetrachloroethene Tetrahydrofuran Toluene 1,2,3-Trichlorobenzene 1,2,4-Trichlorobenzene 1,1,1-Trichloroethane 1,1,2-Trichloroethane Trichloroethene Trichlorofluoromethane 1,2,3-Trichloropropane 1,1,2-Trichlorotrifluoroethane 1,2,4-Trimethylbenzene 1,3,5-Trimethylbenzene Vinyl acetate Vinyl chloride m,p-Xylene o-Xylene Surrogate: Dibromofluoromethane Surrogate: 4-Bromofluorobenzene Surrogate: Toluene-d8 ND ND ND 15.4 ND ND ND ND 1.06 ND 529 ND 14.1 1.99 ND ND ND ND ND 263 ND ND ND ND ND ND ND ND 20.8 13.7 ND ND 124 113 0.50 0.50 2.00 1.00 1.00 1.00 5.00 1.00 1.00 5.00 10.0 25.0 2.00 1.00 1.00 1.00 1.00 1.00 10.0 10.0 1.00 1.00 2.00 1.00 1.00 2.00 2.00 2.00 1.00 1.00 5.00 0.50 20.0 10.0 ug/l " " 1 " " 7051301 " " 05/13/17 " " 05/13/17 " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " 10 1 " " " " 05/13/17 05/13/17 " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " 10 1 " " " " " " " " " " " " " " " " " " " " " " " " " 05/13/17 05/13/17 " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " 10 " " 05/13/17 " " " " " " " " " 05/13/17 " " " " " " " " " 102 % 102 % 98 % 79-115 80-135 78-118 The results in this report apply to the samples analyzed in accordance with the chain of custody document. 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Page 4 of 16 EMA Log #: 17E0455 Client Name: TRC Solutions Project Name: Otay Ranch Village III Volatile Organic Compounds by EPA Method 8260B Analyte Result Reporting Limit Units Dilution Batch Prepared Analyzed Method 7051301 " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " 05/13/17 " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " 05/13/17 " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes GW-2 (17E0455-02) Grnd-Water Sampled: 05/12/17 09:00 Received: 05/12/17 11:50 Acetone Acetonitrile Acrolein Acrylonitrile Allyl chloride Benzene Bromobenzene Bromochloromethane Bromodichloromethane Bromoform Bromomethane 2-Butanone n-Butylbenzene sec-Butylbenzene tert-Butylbenzene Carbon disulfide Carbon tetrachloride Chlorobenzene Chlorodibromomethane Chloroethane 2-Chloroethylvinyl ether Chloroform Chloromethane 2-Chlorotoluene 4-Chlorotoluene 1,2-Dibromo-3-chloropropane 1,2-Dibromoethane (EDB) Dibromomethane 1,2-Dichlorobenzene 1,3-Dichlorobenzene 1,4-Dichlorobenzene trans-1,4-Dichloro-2-butene Dichlorodifluoromethane 1,1-Dichloroethane 1,2-Dichloroethane 1,1-Dichloroethene cis-1,2-Dichloroethene trans-1,2-Dichloroethene 1,2-Dichloropropane 1,3-Dichloropropane 2,2-Dichloropropane 1,1-Dichloropropene ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 25.0 50.0 100 10.0 1.00 1.00 1.00 1.00 1.00 1.00 2.00 25.0 1.00 1.00 1.00 1.00 0.50 1.00 1.00 2.00 2.00 1.00 2.00 1.00 1.00 2.00 1.00 1.00 1.00 1.00 1.00 2.00 2.00 1.00 0.50 1.00 1.00 1.00 1.00 1.00 1.00 1.00 ug/l " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " 1 " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " The results in this report apply to the samples analyzed in accordance with the chain of custody document. 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Page 5 of 16 EMA Log #: 17E0455 Client Name: TRC Solutions Project Name: Otay Ranch Village III Volatile Organic Compounds by EPA Method 8260B Analyte Result Reporting Limit Units Dilution Batch Prepared Analyzed Method EPA 8260B " " " " " " " " " Notes GW-2 (17E0455-02) Grnd-Water Sampled: 05/12/17 09:00 Received: 05/12/17 11:50 cis-1,3-Dichloropropene trans-1,3-Dichloropropene Diethyl ether Ethylbenzene Hexachlorobutadiene Hexachloroethane 2-Hexanone Iodomethane Isopropylbenzene Methylene chloride Methyl tert-butyl ether 4-Methyl-2-pentanone Naphthalene n-Propylbenzene Styrene 1,1,1,2-Tetrachloroethane 1,1,2,2-Tetrachloroethane Tetrachloroethene Tetrahydrofuran Toluene 1,2,3-Trichlorobenzene 1,2,4-Trichlorobenzene 1,1,1-Trichloroethane 1,1,2-Trichloroethane Trichloroethene Trichlorofluoromethane 1,2,3-Trichloropropane 1,1,2-Trichlorotrifluoroethane 1,2,4-Trimethylbenzene 1,3,5-Trimethylbenzene Vinyl acetate Vinyl chloride m,p-Xylene o-Xylene Surrogate: Dibromofluoromethane Surrogate: 4-Bromofluorobenzene Surrogate: Toluene-d8 ND ND ND ND ND ND ND ND ND ND 4.21 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 0.50 0.50 2.00 1.00 1.00 1.00 5.00 1.00 1.00 5.00 1.00 25.0 2.00 1.00 1.00 1.00 1.00 1.00 10.0 1.00 1.00 1.00 2.00 1.00 1.00 2.00 2.00 2.00 1.00 1.00 5.00 0.50 2.00 1.00 ug/l " " " " " " " " " 1 " " " " " " " " " 7051301 " " " " " " " " " 05/13/17 " " " " " " " " " 05/13/17 " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " 106 % 96 % 99 % 79-115 80-135 78-118 The results in this report apply to the samples analyzed in accordance with the chain of custody document. 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Page 6 of 16 EMA Log #: 17E0455 Client Name: TRC Solutions Project Name: Otay Ranch Village III TPH by EPA 8015B Analyte Result Reporting Limit Units Batch Prepared Analyzed Method Notes 1 7051147 05/12/17 05/12/17 EPA 8015B D-08 " 7051302 Dilution GW-01 (17E0455-01) Grnd-Water Sampled: 05/12/17 08:20 Received: 05/12/17 11:50 Diesel (C10-C28) Surrogate: 4-Bromofluorobenzene Gasoline (C6-C10) 3810 500 962 97 % 50 Surrogate: 4-Bromofluorobenzene ug/l 69-139 " 102 % " 77-135 " " 05/13/17 " " 05/13/17 " " " " GW-2 (17E0455-02) Grnd-Water Sampled: 05/12/17 09:00 Received: 05/12/17 11:50 Diesel (C10-C28) ND 500 Surrogate: 4-Bromofluorobenzene Gasoline (C6-C10) ND 103 % 50 Surrogate: 4-Bromofluorobenzene ug/l 1 7051147 05/12/17 05/12/17 EPA 8015B " " 7051302 " 05/13/17 " 05/13/17 " " 69-139 " 93 % 77-135 " " " " The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 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Page 7 of 16 EMA Log #: 17E0455 Client Name: TRC Solutions Project Name: Otay Ranch Village III Volatile Organic Compounds by EPA Method 8260B - Quality Control Analyte Result Reporting Limit ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 25.0 50.0 100 10.0 1.00 1.00 1.00 1.00 1.00 1.00 2.00 25.0 1.00 1.00 1.00 1.00 0.50 1.00 1.00 2.00 2.00 1.00 2.00 1.00 1.00 2.00 1.00 1.00 1.00 1.00 1.00 2.00 2.00 1.00 0.50 1.00 1.00 Units Spike Level Source Result %REC %REC Limits RPD RPD Limit Notes Batch 7051301 Prepared & Analyzed: 05/13/17 Blank (7051301-BLK1) Acetone Acetonitrile Acrolein Acrylonitrile Allyl chloride Benzene Bromobenzene Bromochloromethane Bromodichloromethane Bromoform Bromomethane 2-Butanone n-Butylbenzene sec-Butylbenzene tert-Butylbenzene Carbon disulfide Carbon tetrachloride Chlorobenzene Chlorodibromomethane Chloroethane 2-Chloroethylvinyl ether Chloroform Chloromethane 2-Chlorotoluene 4-Chlorotoluene 1,2-Dibromo-3-chloropropane 1,2-Dibromoethane (EDB) Dibromomethane 1,2-Dichlorobenzene 1,3-Dichlorobenzene 1,4-Dichlorobenzene trans-1,4-Dichloro-2-butene Dichlorodifluoromethane 1,1-Dichloroethane 1,2-Dichloroethane 1,1-Dichloroethene cis-1,2-Dichloroethene ug/l " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " The results in this report apply to the samples analyzed in accordance with the chain of custody document. 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Page 8 of 16 EMA Log #: 17E0455 Client Name: TRC Solutions Project Name: Otay Ranch Village III Volatile Organic Compounds by EPA Method 8260B - Quality Control Analyte Result Reporting Limit ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 1.00 1.00 1.00 1.00 1.00 0.50 0.50 2.00 1.00 1.00 1.00 5.00 1.00 1.00 5.00 1.00 25.0 2.00 1.00 1.00 1.00 1.00 1.00 10.0 1.00 1.00 1.00 2.00 1.00 1.00 2.00 2.00 2.00 1.00 1.00 5.00 0.50 Units Spike Level Source Result %REC %REC Limits RPD RPD Limit Notes Batch 7051301 Prepared & Analyzed: 05/13/17 Blank (7051301-BLK1) trans-1,2-Dichloroethene 1,2-Dichloropropane 1,3-Dichloropropane 2,2-Dichloropropane 1,1-Dichloropropene cis-1,3-Dichloropropene trans-1,3-Dichloropropene Diethyl ether Ethylbenzene Hexachlorobutadiene Hexachloroethane 2-Hexanone Iodomethane Isopropylbenzene Methylene chloride Methyl tert-butyl ether 4-Methyl-2-pentanone Naphthalene n-Propylbenzene Styrene 1,1,1,2-Tetrachloroethane 1,1,2,2-Tetrachloroethane Tetrachloroethene Tetrahydrofuran Toluene 1,2,3-Trichlorobenzene 1,2,4-Trichlorobenzene 1,1,1-Trichloroethane 1,1,2-Trichloroethane Trichloroethene Trichlorofluoromethane 1,2,3-Trichloropropane 1,1,2-Trichlorotrifluoroethane 1,2,4-Trimethylbenzene 1,3,5-Trimethylbenzene Vinyl acetate Vinyl chloride ug/l " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " The results in this report apply to the samples analyzed in accordance with the chain of custody document. 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Page 9 of 16 EMA Log #: 17E0455 Client Name: TRC Solutions Project Name: Otay Ranch Village III Volatile Organic Compounds by EPA Method 8260B - Quality Control Result Reporting Limit o-Xylene ND ND 2.00 1.00 Surrogate: Dibromofluoromethane Surrogate: 4-Bromofluorobenzene Surrogate: Toluene-d8 50.6 46.7 49.5 Analyte Units Spike Level Source Result %REC Limits RPD %REC RPD Limit Notes Batch 7051301 Prepared & Analyzed: 05/13/17 Blank (7051301-BLK1) m,p-Xylene ug/l " " " " Trichloroethene 46.0 48.9 41.3 45.9 47.7 Surrogate: Dibromofluoromethane Surrogate: 4-Bromofluorobenzene Surrogate: Toluene-d8 47.6 45.8 48.6 Chlorobenzene 1,1-Dichloroethene Toluene 1.00 1.00 1.00 1.00 1.00 50.0 92 90-108 " 50.0 98 90-109 " 50.0 83 70-105 " 50.0 92 81-106 " 50.0 95 90-108 " " " 50.0 50.0 50.0 95 92 97 79-115 80-135 78-118 Prepared & Analyzed: 05/13/17 Trichloroethene 47.3 49.8 42.7 47.5 48.2 Surrogate: Dibromofluoromethane Surrogate: 4-Bromofluorobenzene Surrogate: Toluene-d8 49.6 46.8 49.2 Chlorobenzene 1,1-Dichloroethene Toluene Duplicate (7051301-DUP1) Acetone Acetonitrile Acrolein Acrylonitrile Allyl chloride Benzene Bromobenzene Bromochloromethane Bromodichloromethane Bromoform Bromomethane 79-115 80-135 78-118 ug/l LCS Dup (7051301-BSD1) Benzene 101 93 99 Prepared & Analyzed: 05/13/17 LCS (7051301-BS1) Benzene 50.0 50.0 50.0 ND ND ND ND ND ND ND ND ND ND ND 1.00 1.00 1.00 1.00 1.00 ug/l 50.0 95 90-108 3 30 " 50.0 100 90-109 2 30 " 50.0 85 70-105 3 30 " 50.0 95 81-106 3 30 " 50.0 96 90-108 1 30 " " " 50.0 50.0 50.0 99 94 98 79-115 80-135 78-118 Source: 17E0271-01 ug/l 25.0 " 50.0 " 100 " 10.0 " 1.00 " 1.00 " 1.00 " 1.00 " 1.00 " 1.00 " 2.00 Prepared & Analyzed: 05/13/17 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 The results in this report apply to the samples analyzed in accordance with the chain of custody document. 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Page 10 of 16 EMA Log #: 17E0455 Client Name: TRC Solutions Project Name: Otay Ranch Village III Volatile Organic Compounds by EPA Method 8260B - Quality Control Analyte Result Reporting Limit Units Spike Level Source Result %REC %REC Limits RPD RPD Limit Notes Batch 7051301 Duplicate (7051301-DUP1) 2-Butanone n-Butylbenzene sec-Butylbenzene tert-Butylbenzene Carbon disulfide Carbon tetrachloride Chlorobenzene Chlorodibromomethane Chloroethane 2-Chloroethylvinyl ether Chloroform Chloromethane 2-Chlorotoluene 4-Chlorotoluene 1,2-Dibromo-3-chloropropane 1,2-Dibromoethane (EDB) Dibromomethane 1,2-Dichlorobenzene 1,3-Dichlorobenzene 1,4-Dichlorobenzene trans-1,4-Dichloro-2-butene Dichlorodifluoromethane 1,1-Dichloroethane 1,2-Dichloroethane 1,1-Dichloroethene cis-1,2-Dichloroethene trans-1,2-Dichloroethene 1,2-Dichloropropane 1,3-Dichloropropane 2,2-Dichloropropane 1,1-Dichloropropene cis-1,3-Dichloropropene trans-1,3-Dichloropropene Diethyl ether Ethylbenzene Hexachlorobutadiene Hexachloroethane ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Source: 17E0271-01 ug/l 25.0 " 1.00 " 1.00 " 1.00 " 1.00 " 0.50 " 1.00 " 1.00 " 2.00 " 2.00 " 1.00 " 2.00 " 1.00 " 1.00 " 2.00 " 1.00 " 1.00 " 1.00 " 1.00 " 1.00 " 2.00 " 2.00 " 1.00 " 0.50 " 1.00 " 1.00 " 1.00 " 1.00 " 1.00 " 1.00 " 1.00 " 0.50 " 0.50 " 2.00 " 1.00 " 1.00 " 1.00 Prepared & Analyzed: 05/13/17 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 The results in this report apply to the samples analyzed in accordance with the chain of custody document. 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Page 11 of 16 EMA Log #: 17E0455 Client Name: TRC Solutions Project Name: Otay Ranch Village III Volatile Organic Compounds by EPA Method 8260B - Quality Control Analyte Result Reporting Limit Units Spike Level Source Result %REC Limits RPD %REC RPD Limit Notes Batch 7051301 Duplicate (7051301-DUP1) 2-Hexanone o-Xylene ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Surrogate: Dibromofluoromethane Surrogate: 4-Bromofluorobenzene Surrogate: Toluene-d8 51.2 48.4 49.7 Iodomethane Isopropylbenzene Methylene chloride Methyl tert-butyl ether 4-Methyl-2-pentanone Naphthalene n-Propylbenzene Styrene 1,1,1,2-Tetrachloroethane 1,1,2,2-Tetrachloroethane Tetrachloroethene Tetrahydrofuran Toluene 1,2,3-Trichlorobenzene 1,2,4-Trichlorobenzene 1,1,1-Trichloroethane 1,1,2-Trichloroethane Trichloroethene Trichlorofluoromethane 1,2,3-Trichloropropane 1,1,2-Trichlorotrifluoroethane 1,2,4-Trimethylbenzene 1,3,5-Trimethylbenzene Vinyl acetate Vinyl chloride m,p-Xylene Source: 17E0271-01 ug/l 5.00 " 1.00 " 1.00 " 5.00 " 1.00 " 25.0 " 2.00 " 1.00 " 1.00 " 1.00 " 1.00 " 1.00 " 10.0 " 1.00 " 1.00 " 1.00 " 2.00 " 1.00 " 1.00 " 2.00 " 2.00 " 2.00 " 1.00 " 1.00 " 5.00 " 0.50 " 2.00 " 1.00 " " " Prepared & Analyzed: 05/13/17 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 50.0 50.0 50.0 102 97 99 79-115 80-135 78-118 The results in this report apply to the samples analyzed in accordance with the chain of custody document. 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Page 12 of 16 EMA Log #: 17E0455 Client Name: TRC Solutions Project Name: Otay Ranch Village III Volatile Organic Compounds by EPA Method 8260B - Quality Control Analyte Result Reporting Limit Units Spike Level Source Result %REC Limits RPD %REC RPD Limit Notes Batch 7051301 Matrix Spike (7051301-MS1) Benzene Trichloroethene 48.7 51.1 43.4 48.9 49.3 Surrogate: Dibromofluoromethane Surrogate: 4-Bromofluorobenzene Surrogate: Toluene-d8 50.2 48.0 49.0 Chlorobenzene 1,1-Dichloroethene Toluene Matrix Spike Dup (7051301-MSD1) Benzene Trichloroethene 46.9 49.3 41.8 46.9 48.0 Surrogate: Dibromofluoromethane Surrogate: 4-Bromofluorobenzene Surrogate: Toluene-d8 49.2 47.4 48.6 Chlorobenzene 1,1-Dichloroethene Toluene Source: 17E0271-01 ug/l 1.00 " 1.00 " 1.00 " 1.00 " 1.00 " " " Source: 17E0271-01 ug/l 1.00 " 1.00 " 1.00 " 1.00 " 1.00 " " " Prepared & Analyzed: 05/13/17 50.0 ND 97 50.0 ND 102 86-115 50.0 ND 87 60-133 50.0 ND 98 76-111 50.0 ND 99 88-112 100 96 98 79-115 80-135 78-118 50.0 50.0 50.0 82-116 Prepared & Analyzed: 05/13/17 50.0 ND 94 82-116 4 30 50.0 ND 99 86-115 4 30 50.0 ND 84 60-133 4 30 50.0 ND 94 76-111 4 30 50.0 ND 96 88-112 3 30 98 95 97 79-115 80-135 78-118 50.0 50.0 50.0 The results in this report apply to the samples analyzed in accordance with the chain of custody document. 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Page 13 of 16 EMA Log #: 17E0455 Client Name: TRC Solutions Project Name: Otay Ranch Village III TPH by EPA 8015B - Quality Control Result Reporting Limit Units Diesel (C10-C28) ND 500 ug/l Surrogate: 4-Bromofluorobenzene 3080 Analyte Spike Level Source Result %REC Limits RPD %REC RPD Limit Notes Batch 7051147 Prepared: 05/11/17 Analyzed: 05/12/17 Blank (7051147-BLK1) " 3330 92 69-139 Prepared: 05/11/17 Analyzed: 05/12/17 LCS (7051147-BS1) Diesel (C10-C28) 6100 Surrogate: 4-Bromofluorobenzene 2870 500 ug/l 5000 122 75-125 " 3330 86 69-139 Prepared: 05/11/17 Analyzed: 05/12/17 LCS Dup (7051147-BSD1) Diesel (C10-C28) 5600 Surrogate: 4-Bromofluorobenzene 2530 Duplicate (7051147-DUP1) Diesel (C10-C28) ND Surrogate: 4-Bromofluorobenzene 2700 Matrix Spike (7051147-MS1) Diesel (C10-C28) 5100 Surrogate: 4-Bromofluorobenzene 2400 Matrix Spike Dup (7051147-MSD1) Diesel (C10-C28) 4900 Surrogate: 4-Bromofluorobenzene 3050 500 ug/l 5000 113 75-125 " 3330 76 69-139 Source: 17E0270-01 ug/l 500 " Source: 17E0353-01 ug/l 500 " Source: 17E0353-01 ug/l 500 " 8 30 Prepared: 05/11/17 Analyzed: 05/12/17 ND 3330 30 81 69-139 Prepared: 05/11/17 Analyzed: 05/12/17 5000 ND 3330 102 75-125 72 69-139 Prepared: 05/11/17 Analyzed: 05/12/17 5000 ND 3330 98 75-125 92 69-139 4 30 Batch 7051302 Prepared & Analyzed: 05/13/17 Blank (7051302-BLK1) Gasoline (C6-C10) ND Surrogate: 4-Bromofluorobenzene 20.7 50 ug/l " 25.0 83 77-135 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. EnviroMatrix Analytical, Inc. Page 14 of 16 EMA Log #: 17E0455 Client Name: TRC Solutions Project Name: Otay Ranch Village III TPH by EPA 8015B - Quality Control Result Reporting Limit Units Gasoline (C6-C10) 181 50 ug/l 200 90 75-125 Surrogate: 4-Bromofluorobenzene 21.0 " 25.0 84 77-135 Analyte Spike Level Source Result %REC Limits RPD %REC RPD Limit Notes Batch 7051302 Prepared & Analyzed: 05/13/17 LCS (7051302-BS1) Prepared & Analyzed: 05/13/17 LCS Dup (7051302-BSD1) Gasoline (C6-C10) 193 Surrogate: 4-Bromofluorobenzene 22.4 Duplicate (7051302-DUP1) Gasoline (C6-C10) ND Surrogate: 4-Bromofluorobenzene 22.4 Matrix Spike (7051302-MS1) Gasoline (C6-C10) 175 Surrogate: 4-Bromofluorobenzene 23.5 Matrix Spike Dup (7051302-MSD1) Gasoline (C6-C10) 174 Surrogate: 4-Bromofluorobenzene 23.6 50 ug/l 200 97 75-125 " 25.0 90 77-135 Source: 17E0437-01 ug/l 50 " Source: 17E0437-01 ug/l 50 " Source: 17E0437-01 ug/l 50 " 7 30 Prepared & Analyzed: 05/13/17 ND 25.0 30 90 77-135 Prepared & Analyzed: 05/13/17 200 ND 25.0 87 75-125 94 77-135 Prepared & Analyzed: 05/13/17 200 ND 25.0 87 75-125 94 77-135 0.8 30 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. EnviroMatrix Analytical, Inc. Page 15 of 16 EMA Log #: 17E0455 Client Name: TRC Solutions Project Name: Otay Ranch Village III Notes and Definitions D-08 Results in the diesel organics range are primarily due to overlap from a gasoline range product. ND Analyte NOT DETECTED at or above the reporting limit NR Not Reported dry Sample results reported on a dry weight basis RPD Relative Percent Difference The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. EnviroMatrix Analytical, Inc. Page 16 of 16 \7 l; 0 Li 3? CHAIN-OF-CUSTODY RECORD EMA LOG En vimMatrix it? 4340 Viewridge Ave, Ste. A - San Diego, CA 92123 - Phone (858) 560-7717 - Fax (858) 560-7763 Client: Requested Analysis Analytical, Inc. Pagei ofl Attn: (9mm Samplersor (BM i filial/?W Address: 97,43 impartial: W. He the (Elan Dir?no CA 5121?? Phone: Kg lewax: \g Email: amacsuda) riff? Regimens?. BaringAci?t?ss; Ag - . In ProjectID: mom ?i Project 21%?q 2:81: (3370! 0 Container 1 Type Sample Sample Sample Client Sample ID Date Time Matrix in: soiua?ro :1 snztow Cid (siw) [Haas (an/v) [9101. (soppnsod aupomooue?io) OILS SIBJSW SEJIJ. DVD (sopgonsod snroquoqdoua?ro) (Sl?uaqdl? peteullelquOd) ??808 809 H718 179915I l'EltU asp-919mm SHND NXLU steamer ?lm ma 0 (DOAS) OLZS I 589 scum ssru 330 H693 [808/809 (spunodwog unoue?io) (vane) (nor. poiqossiqa uz 3V ?3 ~13 PD usmroiug :1 .LlAl uonerournug Wd ?39]!103 (3am 1ttn03 319M oquonomotq ammo C108 3 {Armor ?57:21 omen) 1M1 ?E/rz?noq Tau?) Kxo semi sxra? (30A) (was/12w 1x3 :3 Iosagd? sente?ndt) $108 )1 v?t Matrix Codes: A Air, DW Drinking Water, GW Groundwater, SW Storm Water WW Wastewater, Soil, SED Sediment, SD Solid} Tissue. Oil, Liquid BY RECEIVED BY Signature Shipped By: in Courier a UPS FedEx USPS ?uent Drop Off Other 'Turn-Around?Time: Same Day?Zdeay day) Prim sat/an Clan Cl . m, CompanySignature Print i; ?a '3 if? r! Company: J5 'Reporting Requirements: c1 Fax Excel :??GeozraekerlEDF Cl Hard Copy EDT Signature 'Sample Disposal: Wy Laboratory :1 3Retun1 to Client: or Delivery 0 Archive Prim Sample Integrity Company: Signature Print Company: Correct Containers??g/No Containers Property Preseved: WNO Signature Custody Seaislntact: Yes No Temp@Receipt: i I 05?! I Print COG/Labels Agree: lh?esj No Sampled By: C(?antjEMA Autosampler Company: Signature Print Company: Project/Sample Comments: 'Additional costs may apply. Please note there is a $35 minimum charge for all clients. IEMA reserves the right to return any samples that do not match our waste pro?le. NOTE: By relinquishing samples to EMA, Ina, client agrees to pay for the services requested on this COC form and an disposed of 7 days after report has been ?naiized unless otherwise noted. All work is subject to EMA's terms and conditions. additional analyses performed on this project. Payment for services is due within 30 days from date of invoice. Samples wiil be EnviroMatrix Analytical, Inc. 15 May 2017 TRC Solutions Attn: Gary McCue 4393 Viewridge Avenue. Suite A San Diego, CA 92123 EMA Log #: 17E0454 Project Name: Otay Ranch Village III Project Desc./#:278938.9990 Enclosed are the results of analyses for samples received by the laboratory on 05/12/17 11:50. Samples were analyzed pursuant to client request utilizing EPA or other ELAP approved methodologies. I certify that this data is in compliance both technically and for completeness. Dan Verdon Laboratory Director CA ELAP Certification #: 2564 4340 Viewridge Avenue, Suite A - San Diego, California 92123 - (858) 560-7717 - Fax (858) 560-7763 Analytical Chemistry Laboratory EMA Log #: 17E0454 Client Name: TRC Solutions Project Name: Otay Ranch Village III ANALYTICAL REPORT FOR SAMPLES Sample ID GS-01 Laboratory ID Matrix Date Sampled Date Received 17E0454-01 Grnd-Water 05/12/17 09:20 05/12/17 11:50 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. EnviroMatrix Analytical, Inc. Page 2 of 14 EMA Log #: 17E0454 Client Name: TRC Solutions Project Name: Otay Ranch Village III Volatile Organic Compounds by EPA Method 8260B Analyte Result Reporting Limit Units Dilution Batch Prepared Analyzed Method EPA 8260B " " " " Notes GS-01 (17E0454-01) Grnd-Water Sampled: 05/12/17 09:20 Received: 05/12/17 11:50 Acetone Acetonitrile Acrolein Acrylonitrile Allyl chloride Benzene Bromobenzene Bromochloromethane Bromodichloromethane Bromoform Bromomethane 2-Butanone n-Butylbenzene sec-Butylbenzene tert-Butylbenzene Carbon disulfide Carbon tetrachloride Chlorobenzene Chlorodibromomethane Chloroethane 2-Chloroethylvinyl ether Chloroform Chloromethane 2-Chlorotoluene 4-Chlorotoluene 1,2-Dibromo-3-chloropropane 1,2-Dibromoethane (EDB) Dibromomethane 1,2-Dichlorobenzene 1,3-Dichlorobenzene 1,4-Dichlorobenzene trans-1,4-Dichloro-2-butene Dichlorodifluoromethane 1,1-Dichloroethane 1,2-Dichloroethane 1,1-Dichloroethene cis-1,2-Dichloroethene trans-1,2-Dichloroethene 1,2-Dichloropropane 1,3-Dichloropropane 2,2-Dichloropropane 1,1-Dichloropropene ND ND ND ND ND 1810 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 49.5 ND ND ND ND ND ND ND 1250 2500 5000 500 50.0 50.0 50.0 50.0 50.0 50.0 100 1250 50.0 50.0 50.0 50.0 25.0 50.0 50.0 100 100 50.0 100 50.0 50.0 100 50.0 50.0 50.0 50.0 50.0 100 100 50.0 25.0 50.0 50.0 50.0 50.0 50.0 50.0 50.0 ug/l " " " " 50 " " " " 7051301 " " " " 05/13/17 " " " " 05/13/17 " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. EnviroMatrix Analytical, Inc. Page 3 of 14 EMA Log #: 17E0454 Client Name: TRC Solutions Project Name: Otay Ranch Village III Volatile Organic Compounds by EPA Method 8260B Analyte Result Reporting Limit Units Dilution Batch Prepared Analyzed Method EPA 8260B " " Notes GS-01 (17E0454-01) Grnd-Water Sampled: 05/12/17 09:20 Received: 05/12/17 11:50 cis-1,3-Dichloropropene trans-1,3-Dichloropropene Diethyl ether Ethylbenzene Hexachlorobutadiene Hexachloroethane 2-Hexanone Iodomethane Isopropylbenzene Methylene chloride Methyl tert-butyl ether 4-Methyl-2-pentanone Naphthalene n-Propylbenzene Styrene 1,1,1,2-Tetrachloroethane 1,1,2,2-Tetrachloroethane Tetrachloroethene Tetrahydrofuran Toluene 1,2,3-Trichlorobenzene 1,2,4-Trichlorobenzene 1,1,1-Trichloroethane 1,1,2-Trichloroethane Trichloroethene Trichlorofluoromethane 1,2,3-Trichloropropane 1,1,2-Trichlorotrifluoroethane 1,2,4-Trimethylbenzene 1,3,5-Trimethylbenzene Vinyl acetate Vinyl chloride m,p-Xylene o-Xylene Surrogate: Dibromofluoromethane Surrogate: 4-Bromofluorobenzene Surrogate: Toluene-d8 ND ND ND 403 ND ND ND ND ND ND 2890 ND 122 53.0 ND ND ND ND ND 5220 ND ND ND ND ND ND ND ND 625 148 ND ND 3100 1340 25.0 25.0 100 50.0 50.0 50.0 250 50.0 50.0 250 50.0 1250 100 50.0 50.0 50.0 50.0 50.0 500 100 50.0 50.0 100 50.0 50.0 100 100 100 50.0 50.0 250 25.0 100 50.0 ug/l " " 50 " " 7051301 " " 05/13/17 " " 05/13/17 " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " 100 50 " " " " " " " " " " " " " " " " " " " " " " " " " 05/13/17 05/13/17 " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " 105 % 97 % 98 % 79-115 80-135 78-118 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. EnviroMatrix Analytical, Inc. Page 4 of 14 EMA Log #: 17E0454 Client Name: TRC Solutions Project Name: Otay Ranch Village III TPH by EPA 8015B Analyte Result Reporting Limit Units Batch Prepared Analyzed Method Notes 1 7051147 05/12/17 05/12/17 EPA 8015B D-08 50 7051302 Dilution GS-01 (17E0454-01) Grnd-Water Sampled: 05/12/17 09:20 Received: 05/12/17 11:50 Diesel (C10-C28) Surrogate: 4-Bromofluorobenzene Gasoline (C6-C10) Surrogate: 4-Bromofluorobenzene 8100 500 ug/l 19000 99 % 2500 " 69-139 89 % 77-135 " " " 05/13/17 " " 05/13/17 " " " " The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. EnviroMatrix Analytical, Inc. Page 5 of 14 EMA Log #: 17E0454 Client Name: TRC Solutions Project Name: Otay Ranch Village III Volatile Organic Compounds by EPA Method 8260B - Quality Control Analyte Result Reporting Limit ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 25.0 50.0 100 10.0 1.00 1.00 1.00 1.00 1.00 1.00 2.00 25.0 1.00 1.00 1.00 1.00 0.50 1.00 1.00 2.00 2.00 1.00 2.00 1.00 1.00 2.00 1.00 1.00 1.00 1.00 1.00 2.00 2.00 1.00 0.50 1.00 1.00 Units Spike Level Source Result %REC %REC Limits RPD RPD Limit Notes Batch 7051301 Prepared & Analyzed: 05/13/17 Blank (7051301-BLK1) Acetone Acetonitrile Acrolein Acrylonitrile Allyl chloride Benzene Bromobenzene Bromochloromethane Bromodichloromethane Bromoform Bromomethane 2-Butanone n-Butylbenzene sec-Butylbenzene tert-Butylbenzene Carbon disulfide Carbon tetrachloride Chlorobenzene Chlorodibromomethane Chloroethane 2-Chloroethylvinyl ether Chloroform Chloromethane 2-Chlorotoluene 4-Chlorotoluene 1,2-Dibromo-3-chloropropane 1,2-Dibromoethane (EDB) Dibromomethane 1,2-Dichlorobenzene 1,3-Dichlorobenzene 1,4-Dichlorobenzene trans-1,4-Dichloro-2-butene Dichlorodifluoromethane 1,1-Dichloroethane 1,2-Dichloroethane 1,1-Dichloroethene cis-1,2-Dichloroethene ug/l " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. EnviroMatrix Analytical, Inc. Page 6 of 14 EMA Log #: 17E0454 Client Name: TRC Solutions Project Name: Otay Ranch Village III Volatile Organic Compounds by EPA Method 8260B - Quality Control Analyte Result Reporting Limit ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 1.00 1.00 1.00 1.00 1.00 0.50 0.50 2.00 1.00 1.00 1.00 5.00 1.00 1.00 5.00 1.00 25.0 2.00 1.00 1.00 1.00 1.00 1.00 10.0 1.00 1.00 1.00 2.00 1.00 1.00 2.00 2.00 2.00 1.00 1.00 5.00 0.50 Units Spike Level Source Result %REC %REC Limits RPD RPD Limit Notes Batch 7051301 Prepared & Analyzed: 05/13/17 Blank (7051301-BLK1) trans-1,2-Dichloroethene 1,2-Dichloropropane 1,3-Dichloropropane 2,2-Dichloropropane 1,1-Dichloropropene cis-1,3-Dichloropropene trans-1,3-Dichloropropene Diethyl ether Ethylbenzene Hexachlorobutadiene Hexachloroethane 2-Hexanone Iodomethane Isopropylbenzene Methylene chloride Methyl tert-butyl ether 4-Methyl-2-pentanone Naphthalene n-Propylbenzene Styrene 1,1,1,2-Tetrachloroethane 1,1,2,2-Tetrachloroethane Tetrachloroethene Tetrahydrofuran Toluene 1,2,3-Trichlorobenzene 1,2,4-Trichlorobenzene 1,1,1-Trichloroethane 1,1,2-Trichloroethane Trichloroethene Trichlorofluoromethane 1,2,3-Trichloropropane 1,1,2-Trichlorotrifluoroethane 1,2,4-Trimethylbenzene 1,3,5-Trimethylbenzene Vinyl acetate Vinyl chloride ug/l " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. EnviroMatrix Analytical, Inc. Page 7 of 14 EMA Log #: 17E0454 Client Name: TRC Solutions Project Name: Otay Ranch Village III Volatile Organic Compounds by EPA Method 8260B - Quality Control Result Reporting Limit o-Xylene ND ND 2.00 1.00 Surrogate: Dibromofluoromethane Surrogate: 4-Bromofluorobenzene Surrogate: Toluene-d8 50.6 46.7 49.5 Analyte Units Spike Level Source Result %REC Limits RPD %REC RPD Limit Notes Batch 7051301 Prepared & Analyzed: 05/13/17 Blank (7051301-BLK1) m,p-Xylene ug/l " " " " Trichloroethene 46.0 48.9 41.3 45.9 47.7 Surrogate: Dibromofluoromethane Surrogate: 4-Bromofluorobenzene Surrogate: Toluene-d8 47.6 45.8 48.6 Chlorobenzene 1,1-Dichloroethene Toluene 1.00 1.00 1.00 1.00 1.00 50.0 92 90-108 " 50.0 98 90-109 " 50.0 83 70-105 " 50.0 92 81-106 " 50.0 95 90-108 " " " 50.0 50.0 50.0 95 92 97 79-115 80-135 78-118 Prepared & Analyzed: 05/13/17 Trichloroethene 47.3 49.8 42.7 47.5 48.2 Surrogate: Dibromofluoromethane Surrogate: 4-Bromofluorobenzene Surrogate: Toluene-d8 49.6 46.8 49.2 Chlorobenzene 1,1-Dichloroethene Toluene Duplicate (7051301-DUP1) Acetone Acetonitrile Acrolein Acrylonitrile Allyl chloride Benzene Bromobenzene Bromochloromethane Bromodichloromethane Bromoform Bromomethane 79-115 80-135 78-118 ug/l LCS Dup (7051301-BSD1) Benzene 101 93 99 Prepared & Analyzed: 05/13/17 LCS (7051301-BS1) Benzene 50.0 50.0 50.0 ND ND ND ND ND ND ND ND ND ND ND 1.00 1.00 1.00 1.00 1.00 ug/l 50.0 95 90-108 3 30 " 50.0 100 90-109 2 30 " 50.0 85 70-105 3 30 " 50.0 95 81-106 3 30 " 50.0 96 90-108 1 30 " " " 50.0 50.0 50.0 99 94 98 79-115 80-135 78-118 Source: 17E0271-01 ug/l 25.0 " 50.0 " 100 " 10.0 " 1.00 " 1.00 " 1.00 " 1.00 " 1.00 " 1.00 " 2.00 Prepared & Analyzed: 05/13/17 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. EnviroMatrix Analytical, Inc. Page 8 of 14 EMA Log #: 17E0454 Client Name: TRC Solutions Project Name: Otay Ranch Village III Volatile Organic Compounds by EPA Method 8260B - Quality Control Analyte Result Reporting Limit Units Spike Level Source Result %REC %REC Limits RPD RPD Limit Notes Batch 7051301 Duplicate (7051301-DUP1) 2-Butanone n-Butylbenzene sec-Butylbenzene tert-Butylbenzene Carbon disulfide Carbon tetrachloride Chlorobenzene Chlorodibromomethane Chloroethane 2-Chloroethylvinyl ether Chloroform Chloromethane 2-Chlorotoluene 4-Chlorotoluene 1,2-Dibromo-3-chloropropane 1,2-Dibromoethane (EDB) Dibromomethane 1,2-Dichlorobenzene 1,3-Dichlorobenzene 1,4-Dichlorobenzene trans-1,4-Dichloro-2-butene Dichlorodifluoromethane 1,1-Dichloroethane 1,2-Dichloroethane 1,1-Dichloroethene cis-1,2-Dichloroethene trans-1,2-Dichloroethene 1,2-Dichloropropane 1,3-Dichloropropane 2,2-Dichloropropane 1,1-Dichloropropene cis-1,3-Dichloropropene trans-1,3-Dichloropropene Diethyl ether Ethylbenzene Hexachlorobutadiene Hexachloroethane ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Source: 17E0271-01 ug/l 25.0 " 1.00 " 1.00 " 1.00 " 1.00 " 0.50 " 1.00 " 1.00 " 2.00 " 2.00 " 1.00 " 2.00 " 1.00 " 1.00 " 2.00 " 1.00 " 1.00 " 1.00 " 1.00 " 1.00 " 2.00 " 2.00 " 1.00 " 0.50 " 1.00 " 1.00 " 1.00 " 1.00 " 1.00 " 1.00 " 1.00 " 0.50 " 0.50 " 2.00 " 1.00 " 1.00 " 1.00 Prepared & Analyzed: 05/13/17 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. EnviroMatrix Analytical, Inc. Page 9 of 14 EMA Log #: 17E0454 Client Name: TRC Solutions Project Name: Otay Ranch Village III Volatile Organic Compounds by EPA Method 8260B - Quality Control Analyte Result Reporting Limit Units Spike Level Source Result %REC Limits RPD %REC RPD Limit Notes Batch 7051301 Duplicate (7051301-DUP1) 2-Hexanone o-Xylene ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Surrogate: Dibromofluoromethane Surrogate: 4-Bromofluorobenzene Surrogate: Toluene-d8 51.2 48.4 49.7 Iodomethane Isopropylbenzene Methylene chloride Methyl tert-butyl ether 4-Methyl-2-pentanone Naphthalene n-Propylbenzene Styrene 1,1,1,2-Tetrachloroethane 1,1,2,2-Tetrachloroethane Tetrachloroethene Tetrahydrofuran Toluene 1,2,3-Trichlorobenzene 1,2,4-Trichlorobenzene 1,1,1-Trichloroethane 1,1,2-Trichloroethane Trichloroethene Trichlorofluoromethane 1,2,3-Trichloropropane 1,1,2-Trichlorotrifluoroethane 1,2,4-Trimethylbenzene 1,3,5-Trimethylbenzene Vinyl acetate Vinyl chloride m,p-Xylene Source: 17E0271-01 ug/l 5.00 " 1.00 " 1.00 " 5.00 " 1.00 " 25.0 " 2.00 " 1.00 " 1.00 " 1.00 " 1.00 " 1.00 " 10.0 " 1.00 " 1.00 " 1.00 " 2.00 " 1.00 " 1.00 " 2.00 " 2.00 " 2.00 " 1.00 " 1.00 " 5.00 " 0.50 " 2.00 " 1.00 " " " Prepared & Analyzed: 05/13/17 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 ND 30 50.0 50.0 50.0 102 97 99 79-115 80-135 78-118 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. EnviroMatrix Analytical, Inc. Page 10 of 14 EMA Log #: 17E0454 Client Name: TRC Solutions Project Name: Otay Ranch Village III Volatile Organic Compounds by EPA Method 8260B - Quality Control Analyte Result Reporting Limit Units Spike Level Source Result %REC Limits RPD %REC RPD Limit Notes Batch 7051301 Matrix Spike (7051301-MS1) Benzene Trichloroethene 48.7 51.1 43.4 48.9 49.3 Surrogate: Dibromofluoromethane Surrogate: 4-Bromofluorobenzene Surrogate: Toluene-d8 50.2 48.0 49.0 Chlorobenzene 1,1-Dichloroethene Toluene Matrix Spike Dup (7051301-MSD1) Benzene Trichloroethene 46.9 49.3 41.8 46.9 48.0 Surrogate: Dibromofluoromethane Surrogate: 4-Bromofluorobenzene Surrogate: Toluene-d8 49.2 47.4 48.6 Chlorobenzene 1,1-Dichloroethene Toluene Source: 17E0271-01 ug/l 1.00 " 1.00 " 1.00 " 1.00 " 1.00 " " " Source: 17E0271-01 ug/l 1.00 " 1.00 " 1.00 " 1.00 " 1.00 " " " Prepared & Analyzed: 05/13/17 50.0 ND 97 50.0 ND 102 86-115 50.0 ND 87 60-133 50.0 ND 98 76-111 50.0 ND 99 88-112 100 96 98 79-115 80-135 78-118 50.0 50.0 50.0 82-116 Prepared & Analyzed: 05/13/17 50.0 ND 94 82-116 4 30 50.0 ND 99 86-115 4 30 50.0 ND 84 60-133 4 30 50.0 ND 94 76-111 4 30 50.0 ND 96 88-112 3 30 98 95 97 79-115 80-135 78-118 50.0 50.0 50.0 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. EnviroMatrix Analytical, Inc. Page 11 of 14 EMA Log #: 17E0454 Client Name: TRC Solutions Project Name: Otay Ranch Village III TPH by EPA 8015B - Quality Control Result Reporting Limit Units Diesel (C10-C28) ND 500 ug/l Surrogate: 4-Bromofluorobenzene 3080 Analyte Spike Level Source Result %REC Limits RPD %REC RPD Limit Notes Batch 7051147 Prepared: 05/11/17 Analyzed: 05/12/17 Blank (7051147-BLK1) " 3330 92 69-139 Prepared: 05/11/17 Analyzed: 05/12/17 LCS (7051147-BS1) Diesel (C10-C28) 6100 Surrogate: 4-Bromofluorobenzene 2870 500 ug/l 5000 122 75-125 " 3330 86 69-139 Prepared: 05/11/17 Analyzed: 05/12/17 LCS Dup (7051147-BSD1) Diesel (C10-C28) 5600 Surrogate: 4-Bromofluorobenzene 2530 Duplicate (7051147-DUP1) Diesel (C10-C28) ND Surrogate: 4-Bromofluorobenzene 2700 Matrix Spike (7051147-MS1) Diesel (C10-C28) 5100 Surrogate: 4-Bromofluorobenzene 2400 Matrix Spike Dup (7051147-MSD1) Diesel (C10-C28) 4900 Surrogate: 4-Bromofluorobenzene 3050 500 ug/l 5000 113 75-125 " 3330 76 69-139 Source: 17E0270-01 ug/l 500 " Source: 17E0353-01 ug/l 500 " Source: 17E0353-01 ug/l 500 " 8 30 Prepared: 05/11/17 Analyzed: 05/12/17 ND 3330 30 81 69-139 Prepared: 05/11/17 Analyzed: 05/12/17 5000 ND 3330 102 75-125 72 69-139 Prepared: 05/11/17 Analyzed: 05/12/17 5000 ND 3330 98 75-125 92 69-139 4 30 Batch 7051302 Prepared & Analyzed: 05/13/17 Blank (7051302-BLK1) Gasoline (C6-C10) ND Surrogate: 4-Bromofluorobenzene 20.7 50 ug/l " 25.0 83 77-135 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. EnviroMatrix Analytical, Inc. Page 12 of 14 EMA Log #: 17E0454 Client Name: TRC Solutions Project Name: Otay Ranch Village III TPH by EPA 8015B - Quality Control Result Reporting Limit Units Gasoline (C6-C10) 181 50 ug/l 200 90 75-125 Surrogate: 4-Bromofluorobenzene 21.0 " 25.0 84 77-135 Analyte Spike Level Source Result %REC Limits RPD %REC RPD Limit Notes Batch 7051302 Prepared & Analyzed: 05/13/17 LCS (7051302-BS1) Prepared & Analyzed: 05/13/17 LCS Dup (7051302-BSD1) Gasoline (C6-C10) 193 Surrogate: 4-Bromofluorobenzene 22.4 Duplicate (7051302-DUP1) Gasoline (C6-C10) ND Surrogate: 4-Bromofluorobenzene 22.4 Matrix Spike (7051302-MS1) Gasoline (C6-C10) 175 Surrogate: 4-Bromofluorobenzene 23.5 Matrix Spike Dup (7051302-MSD1) Gasoline (C6-C10) 174 Surrogate: 4-Bromofluorobenzene 23.6 50 ug/l 200 97 75-125 " 25.0 90 77-135 Source: 17E0437-01 ug/l 50 " Source: 17E0437-01 ug/l 50 " Source: 17E0437-01 ug/l 50 " 7 30 Prepared & Analyzed: 05/13/17 ND 25.0 30 90 77-135 Prepared & Analyzed: 05/13/17 200 ND 25.0 87 75-125 94 77-135 Prepared & Analyzed: 05/13/17 200 ND 25.0 87 75-125 94 77-135 0.8 30 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. EnviroMatrix Analytical, Inc. Page 13 of 14 EMA Log #: 17E0454 Client Name: TRC Solutions Project Name: Otay Ranch Village III Notes and Definitions D-08 Results in the diesel organics range are primarily due to overlap from a gasoline range product. ND Analyte NOT DETECTED at or above the reporting limit NR Not Reported dry Sample results reported on a dry weight basis RPD Relative Percent Difference The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. EnviroMatrix Analytical, Inc. Page 14 of 14 CHAIN-OF-CUSTODY RECORD EnvzroMatrzx i i? Page; ofi Analytical, Inc. 4340 Viewridge Ave, Ste. A - San Diego, CA 92123 Phone (858) 560-7717 - Fax (858) 560?7763 EMA LOG 1 Client: TTQC Requested Analysis Attn: Glam MoCeth Samplersts) lay-lam 9t Canned/L Address: Viewrldoi? Ave) Phone: Kg?" {533' Wki?xiqqi??f Fax: 313? 555' 5?ng BillingAddress: AS ProjectID: Own WhCi/l Vii ia?li?r?\ Project#: Lj??gq?yaqc?iqcy (saptonsa?i Sample Date Sample ID Matrix Client Sample 1D Container Type (septotzsad smoquoqdouefho) (sl?usngg pamugmmo?lod) 2808 809 11713 Ktuo (sorts) ores ?29 179910 t?stvu mum 993919 721:0 (spunoduzog unoua?io) lay 1808 809 scum 330 HOW ammo 9191mm panlossygu uz 3v soiue?io smow Cl IN Cid n3 (YRS '3 311.1, '3 Slglaw l. Gilli 3V3 (vuou) (Hill. JO P3 (am) 1910?} ?uuomoo aptue/(Q ualomwg 0030 uoamwnua t3 war: (3am 1un03 azald otndonomaH (308 (53lasato?zf saon.? (Hdi) 9:03 ?3,1th Matrix Codes: A Air, DW Drinking Water, GW Groundwater, SW Storm Water WW Wastewater, Soil, SED Sediment, SD Solid, Tissue, Oii, Liquid RELINQUISHED BY RECEIVED BY I WW1, ma Shipped By: :1 Courier :1 UPS El FedElx USPS XCIient Drop Off Other Prim Sat/0'3? W140i 'Turn-Around?Time: Same Daywday day) Company. 7% 145%) Signature Print ?1,476)! ftp-13V?; Company: 13;. My!) 'Reporting Requirements: Fax Cl Excel P?Geotracker/EDF El Hard Copy (3 EDT Signature Sample Disposal: Laboratory 1Return to Client: or Delivery a Archive Prim Sample Integrity Company: Signature Print Company: Correct Containers: %No Containers Properly Preseved: No NIA Signature Custody Seals intact: Yes No Temp Receipt: Print No Sampled By: EMA Autosampler Company: Signature Print Company: Project/SampleEomments: 'Additional costs may apply. Piease note there is a $35 minimum charge for all clients. 2EMA Areserves the right to return any samples that do not match our waste pro?le. By relinquishing samples to EMA, Inc. client agrees to pay for the services requested on this COC form and any additional analyses performed on this project. Payment for services is due within 30 days from date of invoice. Samples will be dis tsposed of 7 days after report has been ?nalized unless otherwise noted. All Work IS subject to 5 terms and conditions. Site Assessment and Human Health Vapor Risk Assessment Report  Otay Ranch Village 3, Heritage Road, Chula Vista, CA  August 17, 2017                      APPENDIX B  GENERAL FIELD PROCEDURES, CALIBRATION REPORTS AND SOIL GAS PROBE PERMITS         This page intentionally left blank Site Assessment and Human Health Vapor Risk Assessment Report  Otay Ranch Village 3, Heritage Road, Chula Vista, CA  August 17, 2017    GENERAL FIELD PROCEDURES    Soil Sampling    The samples were collected in‐situ by driving an acetate tube from approximately 3.5 to 5 feet into the  soil in each probe location. Parts of the samples were used for field description and laboratory analysis.      The soil samples taken for physical parameter analysis were immediately sealed with Teflon sheeting covered  by polyurethane caps. The project and boring number, date and depth of collection, and sampler's initials  were written on the sample, which was kept chilled to approximately 4 degrees Celsius until it was delivered  to a laboratory for analysis.    Soil Gas Probe Installation and Sampling    In accordance with DTSC guidelines, at each interval, the probes were composed of a permeable probe  tip and connected to the surface with ¼‐ inch diameter tubing, embedded with 1 foot of #3 sand pack, 1  foot  of  dry  granular  bentonite  and  hydrated  bentonite  grout.    The  probe  closest  to  the  surface  was  embedded in 1 foot of #3 sand with 1 foot of dry granular bentonite and hydrated bentonite to the surface  (DTSC, 2015)..    For a purge sample, at least three volume of air were purged from the probe and connective tubing prior to  collection of the soil gas sample.  Purged soil gas was released to ambient air. Soil gas samples were the  collected  using  50  milliliter  (mL)  glass  syringes    and  analyzed  by  a  state‐certified  mobile  laboratory  for  analysis. The samples were kept at ambient or room temperature, avoiding excessive heat or cold, until the  analysis  was  performed.  The  project  and  sample  number,  date  of  collection,  and  sampler's  initials  were  written on each sample.    All purging and sampling equipment in contact with soil gas consisted of new, disposable material. To avoid  repeated cleaning for additional sampling events, some materials may have been dedicated to a particular  probe.    Chain of Custody Protocol    Chain of custody protocol was followed for all soil and soil gas samples selected for laboratory analysis.  The  Chain of Custody form(s) accompanied the samples to the laboratory and provided a continuous record of  possession at all times.        This page intentionally left blank Site Assessment and Human Health Vapor Risk Assessment Report  Otay Ranch Village 3, Heritage Road, Chula Vista, CA  August 17, 2017                      APPENDIX C  SOIL GAS LABORATORY ANALYTICAL RESULTS        This page intentionally left blank June 29, 2017 Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 RE: Otay Ranch Village 3 Chula Vista, CA. 91911 Enclosed are the results of analyses for soil gas samples received by Environmental Support Technologies laboratory on 06/07/17 21:46. The analyses were performed according to the prescribed method as outlined by EPA 8260B. A shut in test was performed, leak test was performed, equipment blank was run, and selected purge volume was 3PV. If you have any questions concerning this report, please feel free to contact Project Manager. Sincerely, Ashley Flores Ashley Flores Project Manager Environmental Support Technologies laboratories are certified by the California Department of Health Services (CDHS), Environmental Laboratory Accreditation Program (ELAP) No's. 2772, 2773, and 2767. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann Reported: 29-Jun-17 09:49 ANALYTICAL REPORT FOR SAMPLES Sample ID Laboratory ID Matrix Date Sampled Date Analyzed Equipment Blank 3F70701-01 Air 07-Jun-17 10:05 07-Jun-17 10:18 Material Blank 3F70701-02 Air 07-Jun-17 10:30 07-Jun-17 10:46 SGP-06-5 3PV 3F70701-03 Air 07-Jun-17 11:00 07-Jun-17 11:14 SGP-07-5 3PV 3F70701-04 Air 07-Jun-17 11:55 07-Jun-17 12:10 SGP-05-5 3PV 3F70701-05 Air 07-Jun-17 12:25 07-Jun-17 12:39 SGP-05-13 3PV 3F70701-06 Air 07-Jun-17 12:55 07-Jun-17 13:07 SGP-04-5 3PV 3F70701-07 Air 07-Jun-17 13:25 07-Jun-17 13:35 SGP-04-13 3PV 3F70701-08 Air 07-Jun-17 13:50 07-Jun-17 14:03 SGP-03-5 3PV 3F70701-09 Air 07-Jun-17 14:20 07-Jun-17 14:32 SGP-03-15 3PV 3F70701-10 Air 07-Jun-17 14:45 07-Jun-17 14:58 SGP-03-23 3PV 3F70701-11 Air 07-Jun-17 15:15 07-Jun-17 15:27 SGP-01-5 3PV 3F70701-12 Air 07-Jun-17 15:40 07-Jun-17 15:55 SGP-06-5 3PV 3F70702-01 Air 07-Jun-17 17:40 07-Jun-17 17:56 SGP-07-5 3PV 3F70702-02 Air 07-Jun-17 18:40 07-Jun-17 18:55 SGP-05-5 3PV 3F70702-03 Air 07-Jun-17 19:10 07-Jun-17 19:23 SGP-05-13 3PV 3F70702-04 Air 07-Jun-17 21:40 07-Jun-17 21:55 SGP-04-5 3PV 3F70702-05 Air 07-Jun-17 22:10 07-Jun-17 22:23 SGP-04-13 3PV 3F70702-06 Air 07-Jun-17 22:40 07-Jun-17 22:52 SGP-03-5 3PV 3F70702-07 Air 07-Jun-17 23:10 07-Jun-17 23:20 SGP-03-15 3PV 3F70702-08 Air 07-Jun-17 23:35 07-Jun-17 23:48 SGP-03-23 3PV 3F70702-09 Air 08-Jun-17 00:05 08-Jun-17 00:17 SGP-01-5 3PV 3F70702-10 Air 08-Jun-17 00:30 08-Jun-17 00:45 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 1 of 58 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 09:49 Volatile Organic Compounds Environmental Support Technologies Analyte Equipment Blank (3F70701-01) Air 1,1,1,2-Tetrachloroethane 1,1,1-Trichloroethane 1,1,2,2-Tetrachloroethane 1,1,2-Trichloroethane 1,1,2-Trichloro-trifluoroethane 1,1-Dichloroethane 1,1-Dichloroethene 1,1-Dichloropropene 1,2,3-Trichlorobenzene 1,2,3-Trichloropropane 1,2,4-Trichlorobenzene 1,2,4-Trimethylbenzene 1,2-Dibromo-3-chloropropane 1,2-Dibromoethane 1,2-Dichlorobenzene 1,2-Dichloroethane 1,2-Dichloropropane 1,3,5-Trimethylbenzene 1,3-Dichlorobenzene 1,3-Dichloropropane 1,4-Dichlorobenzene 2,2-Dichloropropane 2-Chlorotoluene 4-Chlorotoluene Benzene Bromobenzene Bromochloromethane Bromodichloromethane Bromoform Bromomethane Carbon disulfide Carbon tetrachloride Chlorobenzene Chloroethane Chloroform Chloromethane cis-1,2-Dichloroethene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F0702 06/07/17 06/07/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/07/17 10:05 Analyzed: 06/07/17 10:18 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 20 20 24 20 20 20 20 20 20 20 20 20 45 20 20 20 20 20 20 20 20 20 20 20 20 20 90 20 20 150 20 20 20 21 20 20 20 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 2 of 58 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 09:49 Volatile Organic Compounds Environmental Support Technologies Analyte Equipment Blank (3F70701-01) Air cis-1,3-Dichloropropene Dibromochloromethane Dibromomethane Dichlorodifluoromethane Ethylbenzene Hexachlorobutadiene Isopropylbenzene meta- and para-Xylenes Methylene Chloride Naphthalene n-Butylbenzene n-Propylbenzene ortho-Xylene p-Isopropyltoluene sec-Butylbenzene Styrene tert-Butylbenzene Tetrachloroethene Toluene trans-1,2-Dichloroethene trans-1,3-Dichloropropene Trichloroethene Trichlorofluoromethane Vinyl Chloride 2-Propanol Surrogate: Dibromofluoromethane Surrogate: Toluene-d8 Surrogate: 4-Bromofluorobenzene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F0702 06/07/17 06/07/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/07/17 10:05 Analyzed: 06/07/17 10:18 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 20 90 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 290 109 % 92.5 % 103 % 75-125 75-125 75-125 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 3 of 58 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 09:49 Volatile Organic Compounds Environmental Support Technologies Analyte Material Blank (3F70701-02) Air 1,1,1,2-Tetrachloroethane 1,1,1-Trichloroethane 1,1,2,2-Tetrachloroethane 1,1,2-Trichloroethane 1,1,2-Trichloro-trifluoroethane 1,1-Dichloroethane 1,1-Dichloroethene 1,1-Dichloropropene 1,2,3-Trichlorobenzene 1,2,3-Trichloropropane 1,2,4-Trichlorobenzene 1,2,4-Trimethylbenzene 1,2-Dibromo-3-chloropropane 1,2-Dibromoethane 1,2-Dichlorobenzene 1,2-Dichloroethane 1,2-Dichloropropane 1,3,5-Trimethylbenzene 1,3-Dichlorobenzene 1,3-Dichloropropane 1,4-Dichlorobenzene 2,2-Dichloropropane 2-Chlorotoluene 4-Chlorotoluene Benzene Bromobenzene Bromochloromethane Bromodichloromethane Bromoform Bromomethane Carbon disulfide Carbon tetrachloride Chlorobenzene Chloroethane Chloroform Chloromethane cis-1,2-Dichloroethene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F0702 06/07/17 06/07/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/07/17 10:30 Analyzed: 06/07/17 10:46 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 20 20 24 20 20 20 20 20 20 20 20 20 45 20 20 20 20 20 20 20 20 20 20 20 20 20 90 20 20 150 20 20 20 21 20 20 20 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 4 of 58 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 09:49 Volatile Organic Compounds Environmental Support Technologies Analyte Material Blank (3F70701-02) Air cis-1,3-Dichloropropene Dibromochloromethane Dibromomethane Dichlorodifluoromethane Ethylbenzene Hexachlorobutadiene Isopropylbenzene meta- and para-Xylenes Methylene Chloride Naphthalene n-Butylbenzene n-Propylbenzene ortho-Xylene p-Isopropyltoluene sec-Butylbenzene Styrene tert-Butylbenzene Tetrachloroethene Toluene trans-1,2-Dichloroethene trans-1,3-Dichloropropene Trichloroethene Trichlorofluoromethane Vinyl Chloride 2-Propanol Surrogate: Dibromofluoromethane Surrogate: Toluene-d8 Surrogate: 4-Bromofluorobenzene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F0702 06/07/17 06/07/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/07/17 10:30 Analyzed: 06/07/17 10:46 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 20 90 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 290 110 % 95.3 % 103 % 75-125 75-125 75-125 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 5 of 58 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 09:49 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-06-5 3PV (3F70701-03) Air 1,1,1,2-Tetrachloroethane 1,1,1-Trichloroethane 1,1,2,2-Tetrachloroethane 1,1,2-Trichloroethane 1,1,2-Trichloro-trifluoroethane 1,1-Dichloroethane 1,1-Dichloroethene 1,1-Dichloropropene 1,2,3-Trichlorobenzene 1,2,3-Trichloropropane 1,2,4-Trichlorobenzene 1,2,4-Trimethylbenzene 1,2-Dibromo-3-chloropropane 1,2-Dibromoethane 1,2-Dichlorobenzene 1,2-Dichloroethane 1,2-Dichloropropane 1,3,5-Trimethylbenzene 1,3-Dichlorobenzene 1,3-Dichloropropane 1,4-Dichlorobenzene 2,2-Dichloropropane 2-Chlorotoluene 4-Chlorotoluene Benzene Bromobenzene Bromochloromethane Bromodichloromethane Bromoform Bromomethane Carbon disulfide Carbon tetrachloride Chlorobenzene Chloroethane Chloroform Chloromethane cis-1,2-Dichloroethene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F0702 06/07/17 06/07/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/07/17 11:00 Analyzed: 06/07/17 11:14 ND ND ND ND ND ND ND ND ND ND ND 20 ND ND ND ND ND 10 ND ND ND ND ND ND 30 ND ND ND ND ND ND ND ND ND ND ND ND 20 20 24 20 20 20 20 20 20 20 20 20 45 20 20 20 20 20 20 20 20 20 20 20 20 20 90 20 20 150 20 20 20 21 20 20 20 J The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 6 of 58 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 09:49 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-06-5 3PV (3F70701-03) Air cis-1,3-Dichloropropene Dibromochloromethane Dibromomethane Dichlorodifluoromethane Ethylbenzene Hexachlorobutadiene Isopropylbenzene meta- and para-Xylenes Methylene Chloride Naphthalene n-Butylbenzene n-Propylbenzene ortho-Xylene p-Isopropyltoluene sec-Butylbenzene Styrene tert-Butylbenzene Tetrachloroethene Toluene trans-1,2-Dichloroethene trans-1,3-Dichloropropene Trichloroethene Trichlorofluoromethane Vinyl Chloride 2-Propanol Surrogate: Dibromofluoromethane Surrogate: Toluene-d8 Surrogate: 4-Bromofluorobenzene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F0702 06/07/17 06/07/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/07/17 11:00 Analyzed: 06/07/17 11:14 ND ND ND ND 20 ND ND 60 ND ND ND ND 20 ND ND ND ND ND 70 ND ND ND ND ND ND 20 90 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 290 103 % 95.4 % 101 % 75-125 75-125 75-125 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 7 of 58 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 09:49 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-07-5 3PV (3F70701-04) Air 1,1,1,2-Tetrachloroethane 1,1,1-Trichloroethane 1,1,2,2-Tetrachloroethane 1,1,2-Trichloroethane 1,1,2-Trichloro-trifluoroethane 1,1-Dichloroethane 1,1-Dichloroethene 1,1-Dichloropropene 1,2,3-Trichlorobenzene 1,2,3-Trichloropropane 1,2,4-Trichlorobenzene 1,2,4-Trimethylbenzene 1,2-Dibromo-3-chloropropane 1,2-Dibromoethane 1,2-Dichlorobenzene 1,2-Dichloroethane 1,2-Dichloropropane 1,3,5-Trimethylbenzene 1,3-Dichlorobenzene 1,3-Dichloropropane 1,4-Dichlorobenzene 2,2-Dichloropropane 2-Chlorotoluene 4-Chlorotoluene Benzene Bromobenzene Bromochloromethane Bromodichloromethane Bromoform Bromomethane Carbon disulfide Carbon tetrachloride Chlorobenzene Chloroethane Chloroform Chloromethane cis-1,2-Dichloroethene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F0702 06/07/17 06/07/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/07/17 11:55 Analyzed: 06/07/17 12:10 ND ND ND ND ND 40 ND ND ND ND ND 200 ND ND ND ND ND 70 ND ND ND ND ND ND 100 ND ND ND ND ND ND ND ND ND ND ND 20 20 20 24 20 20 20 20 20 20 20 20 20 45 20 20 20 20 20 20 20 20 20 20 20 20 20 90 20 20 150 20 20 20 21 20 20 20 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 8 of 58 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 09:49 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-07-5 3PV (3F70701-04) Air cis-1,3-Dichloropropene Dibromochloromethane Dibromomethane Dichlorodifluoromethane Ethylbenzene Hexachlorobutadiene Isopropylbenzene meta- and para-Xylenes Methylene Chloride Naphthalene n-Butylbenzene n-Propylbenzene ortho-Xylene p-Isopropyltoluene sec-Butylbenzene Styrene tert-Butylbenzene Tetrachloroethene Toluene trans-1,2-Dichloroethene trans-1,3-Dichloropropene Trichloroethene Trichlorofluoromethane Vinyl Chloride 2-Propanol Surrogate: Dibromofluoromethane Surrogate: Toluene-d8 Surrogate: 4-Bromofluorobenzene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F0702 06/07/17 06/07/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/07/17 11:55 Analyzed: 06/07/17 12:10 ND ND ND ND 170 ND 20 630 ND ND ND 30 210 10 ND ND ND 10 620 ND ND ND ND ND ND 20 90 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 290 100 % 96.4 % 99.0 % 75-125 75-125 75-125 J J The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 9 of 58 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 09:49 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-05-5 3PV (3F70701-05) Air 1,1,1,2-Tetrachloroethane 1,1,1-Trichloroethane 1,1,2,2-Tetrachloroethane 1,1,2-Trichloroethane 1,1,2-Trichloro-trifluoroethane 1,1-Dichloroethane 1,1-Dichloroethene 1,1-Dichloropropene 1,2,3-Trichlorobenzene 1,2,3-Trichloropropane 1,2,4-Trichlorobenzene 1,2,4-Trimethylbenzene 1,2-Dibromo-3-chloropropane 1,2-Dibromoethane 1,2-Dichlorobenzene 1,2-Dichloroethane 1,2-Dichloropropane 1,3,5-Trimethylbenzene 1,3-Dichlorobenzene 1,3-Dichloropropane 1,4-Dichlorobenzene 2,2-Dichloropropane 2-Chlorotoluene 4-Chlorotoluene Benzene Bromobenzene Bromochloromethane Bromodichloromethane Bromoform Bromomethane Carbon disulfide Carbon tetrachloride Chlorobenzene Chloroethane Chloroform Chloromethane cis-1,2-Dichloroethene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F0702 06/07/17 06/07/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/07/17 12:25 Analyzed: 06/07/17 12:39 ND ND ND ND ND ND ND ND ND ND ND 230 ND ND ND ND ND 80 ND ND ND ND ND ND 70 ND ND ND ND ND ND ND ND ND ND ND ND 20 20 24 20 20 20 20 20 20 20 20 20 45 20 20 20 20 20 20 20 20 20 20 20 20 20 90 20 20 150 20 20 20 21 20 20 20 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 10 of 58 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 09:49 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-05-5 3PV (3F70701-05) Air cis-1,3-Dichloropropene Dibromochloromethane Dibromomethane Dichlorodifluoromethane Ethylbenzene Hexachlorobutadiene Isopropylbenzene meta- and para-Xylenes Methylene Chloride Naphthalene n-Butylbenzene n-Propylbenzene ortho-Xylene p-Isopropyltoluene sec-Butylbenzene Styrene tert-Butylbenzene Tetrachloroethene Toluene trans-1,2-Dichloroethene trans-1,3-Dichloropropene Trichloroethene Trichlorofluoromethane Vinyl Chloride 2-Propanol Surrogate: Dibromofluoromethane Surrogate: Toluene-d8 Surrogate: 4-Bromofluorobenzene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F0702 06/07/17 06/07/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/07/17 12:25 Analyzed: 06/07/17 12:39 ND ND ND ND 110 ND 10 470 ND ND ND 40 160 ND ND ND ND 40 330 ND ND ND ND ND ND 20 90 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 290 99.7 % 100 % 98.2 % 75-125 75-125 75-125 J The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 11 of 58 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 09:49 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-05-13 3PV (3F70701-06) Air 1,1,1,2-Tetrachloroethane 1,1,1-Trichloroethane 1,1,2,2-Tetrachloroethane 1,1,2-Trichloroethane 1,1,2-Trichloro-trifluoroethane 1,1-Dichloroethane 1,1-Dichloroethene 1,1-Dichloropropene 1,2,3-Trichlorobenzene 1,2,3-Trichloropropane 1,2,4-Trichlorobenzene 1,2,4-Trimethylbenzene 1,2-Dibromo-3-chloropropane 1,2-Dibromoethane 1,2-Dichlorobenzene 1,2-Dichloroethane 1,2-Dichloropropane 1,3,5-Trimethylbenzene 1,3-Dichlorobenzene 1,3-Dichloropropane 1,4-Dichlorobenzene 2,2-Dichloropropane 2-Chlorotoluene 4-Chlorotoluene Benzene Bromobenzene Bromochloromethane Bromodichloromethane Bromoform Bromomethane Carbon disulfide Carbon tetrachloride Chlorobenzene Chloroethane Chloroform Chloromethane cis-1,2-Dichloroethene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F0702 06/07/17 06/07/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/07/17 12:55 Analyzed: 06/07/17 13:07 ND ND ND ND ND 110 ND ND ND ND ND 60 ND ND ND ND ND 20 ND ND ND ND ND ND 80 ND ND ND ND ND ND ND ND ND ND ND ND 20 20 24 20 20 20 20 20 20 20 20 20 45 20 20 20 20 20 20 20 20 20 20 20 20 20 90 20 20 150 20 20 20 21 20 20 20 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 12 of 58 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 09:49 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-05-13 3PV (3F70701-06) Air cis-1,3-Dichloropropene Dibromochloromethane Dibromomethane Dichlorodifluoromethane Ethylbenzene Hexachlorobutadiene Isopropylbenzene meta- and para-Xylenes Methylene Chloride Naphthalene n-Butylbenzene n-Propylbenzene ortho-Xylene p-Isopropyltoluene sec-Butylbenzene Styrene tert-Butylbenzene Tetrachloroethene Toluene trans-1,2-Dichloroethene trans-1,3-Dichloropropene Trichloroethene Trichlorofluoromethane Vinyl Chloride 2-Propanol Surrogate: Dibromofluoromethane Surrogate: Toluene-d8 Surrogate: 4-Bromofluorobenzene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F0702 06/07/17 06/07/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/07/17 12:55 Analyzed: 06/07/17 13:07 ND ND ND 130 40 ND 10 340 ND ND ND ND 90 ND ND ND ND 260 240 ND ND ND ND ND ND 20 90 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 290 102 % 97.6 % 98.4 % 75-125 75-125 75-125 J The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 13 of 58 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 09:49 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-04-5 3PV (3F70701-07) Air 1,1,1,2-Tetrachloroethane 1,1,1-Trichloroethane 1,1,2,2-Tetrachloroethane 1,1,2-Trichloroethane 1,1,2-Trichloro-trifluoroethane 1,1-Dichloroethane 1,1-Dichloroethene 1,1-Dichloropropene 1,2,3-Trichlorobenzene 1,2,3-Trichloropropane 1,2,4-Trichlorobenzene 1,2,4-Trimethylbenzene 1,2-Dibromo-3-chloropropane 1,2-Dibromoethane 1,2-Dichlorobenzene 1,2-Dichloroethane 1,2-Dichloropropane 1,3,5-Trimethylbenzene 1,3-Dichlorobenzene 1,3-Dichloropropane 1,4-Dichlorobenzene 2,2-Dichloropropane 2-Chlorotoluene 4-Chlorotoluene Benzene Bromobenzene Bromochloromethane Bromodichloromethane Bromoform Bromomethane Carbon disulfide Carbon tetrachloride Chlorobenzene Chloroethane Chloroform Chloromethane cis-1,2-Dichloroethene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F0702 06/07/17 06/07/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/07/17 13:25 Analyzed: 06/07/17 13:35 ND ND ND ND ND ND ND ND ND ND ND 620 ND ND ND ND ND 230 ND ND ND ND ND ND 80 ND ND ND ND ND ND ND ND ND ND ND ND 20 20 24 20 20 20 20 20 20 20 20 20 45 20 20 20 20 20 20 20 20 20 20 20 20 20 90 20 20 150 20 20 20 21 20 20 20 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 14 of 58 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 09:49 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-04-5 3PV (3F70701-07) Air cis-1,3-Dichloropropene Dibromochloromethane Dibromomethane Dichlorodifluoromethane Ethylbenzene Hexachlorobutadiene Isopropylbenzene meta- and para-Xylenes Methylene Chloride Naphthalene n-Butylbenzene n-Propylbenzene ortho-Xylene p-Isopropyltoluene sec-Butylbenzene Styrene tert-Butylbenzene Tetrachloroethene Toluene trans-1,2-Dichloroethene trans-1,3-Dichloropropene Trichloroethene Trichlorofluoromethane Vinyl Chloride 2-Propanol Surrogate: Dibromofluoromethane Surrogate: Toluene-d8 Surrogate: 4-Bromofluorobenzene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F0702 06/07/17 06/07/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/07/17 13:25 Analyzed: 06/07/17 13:35 ND ND ND ND 380 ND 30 1600 ND ND 10 110 550 10 ND ND ND ND 1000 ND ND ND ND ND ND 20 90 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 290 97.8 % 99.5 % 97.9 % 75-125 75-125 75-125 J J The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 15 of 58 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 09:49 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-04-13 3PV (3F70701-08) Air 1,1,1,2-Tetrachloroethane 1,1,1-Trichloroethane 1,1,2,2-Tetrachloroethane 1,1,2-Trichloroethane 1,1,2-Trichloro-trifluoroethane 1,1-Dichloroethane 1,1-Dichloroethene 1,1-Dichloropropene 1,2,3-Trichlorobenzene 1,2,3-Trichloropropane 1,2,4-Trichlorobenzene 1,2,4-Trimethylbenzene 1,2-Dibromo-3-chloropropane 1,2-Dibromoethane 1,2-Dichlorobenzene 1,2-Dichloroethane 1,2-Dichloropropane 1,3,5-Trimethylbenzene 1,3-Dichlorobenzene 1,3-Dichloropropane 1,4-Dichlorobenzene 2,2-Dichloropropane 2-Chlorotoluene 4-Chlorotoluene Benzene Bromobenzene Bromochloromethane Bromodichloromethane Bromoform Bromomethane Carbon disulfide Carbon tetrachloride Chlorobenzene Chloroethane Chloroform Chloromethane cis-1,2-Dichloroethene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F0702 06/07/17 06/07/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/07/17 13:50 Analyzed: 06/07/17 14:03 ND ND ND ND ND ND ND ND ND ND ND 60 ND ND ND ND ND 20 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 20 20 24 20 20 20 20 20 20 20 20 20 45 20 20 20 20 20 20 20 20 20 20 20 20 20 90 20 20 150 20 20 20 21 20 20 20 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 16 of 58 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 09:49 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-04-13 3PV (3F70701-08) Air cis-1,3-Dichloropropene Dibromochloromethane Dibromomethane Dichlorodifluoromethane Ethylbenzene Hexachlorobutadiene Isopropylbenzene meta- and para-Xylenes Methylene Chloride Naphthalene n-Butylbenzene n-Propylbenzene ortho-Xylene p-Isopropyltoluene sec-Butylbenzene Styrene tert-Butylbenzene Tetrachloroethene Toluene trans-1,2-Dichloroethene trans-1,3-Dichloropropene Trichloroethene Trichlorofluoromethane Vinyl Chloride 2-Propanol Surrogate: Dibromofluoromethane Surrogate: Toluene-d8 Surrogate: 4-Bromofluorobenzene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F0702 06/07/17 06/07/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/07/17 13:50 Analyzed: 06/07/17 14:03 ND ND ND ND 30 ND ND 120 ND ND ND ND 40 ND ND ND ND ND 70 ND ND ND ND ND ND 20 90 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 290 99.7 % 97.7 % 98.9 % 75-125 75-125 75-125 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 17 of 58 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 09:49 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-03-5 3PV (3F70701-09) Air 1,1,1,2-Tetrachloroethane 1,1,1-Trichloroethane 1,1,2,2-Tetrachloroethane 1,1,2-Trichloroethane 1,1,2-Trichloro-trifluoroethane 1,1-Dichloroethane 1,1-Dichloroethene 1,1-Dichloropropene 1,2,3-Trichlorobenzene 1,2,3-Trichloropropane 1,2,4-Trichlorobenzene 1,2,4-Trimethylbenzene 1,2-Dibromo-3-chloropropane 1,2-Dibromoethane 1,2-Dichlorobenzene 1,2-Dichloroethane 1,2-Dichloropropane 1,3,5-Trimethylbenzene 1,3-Dichlorobenzene 1,3-Dichloropropane 1,4-Dichlorobenzene 2,2-Dichloropropane 2-Chlorotoluene 4-Chlorotoluene Benzene Bromobenzene Bromochloromethane Bromodichloromethane Bromoform Bromomethane Carbon disulfide Carbon tetrachloride Chlorobenzene Chloroethane Chloroform Chloromethane cis-1,2-Dichloroethene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F0702 06/07/17 06/07/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/07/17 14:20 Analyzed: 06/07/17 14:32 ND ND ND ND ND ND ND ND ND ND ND 380 ND ND ND ND ND 130 ND ND ND ND ND ND 180 ND ND ND ND ND ND ND ND ND 10 ND ND 20 20 24 20 20 20 20 20 20 20 20 20 45 20 20 20 20 20 20 20 20 20 20 20 20 20 90 20 20 150 20 20 20 21 20 20 20 J The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 18 of 58 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 09:49 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-03-5 3PV (3F70701-09) Air cis-1,3-Dichloropropene Dibromochloromethane Dibromomethane Dichlorodifluoromethane Ethylbenzene Hexachlorobutadiene Isopropylbenzene meta- and para-Xylenes Methylene Chloride Naphthalene n-Butylbenzene n-Propylbenzene ortho-Xylene p-Isopropyltoluene sec-Butylbenzene Styrene tert-Butylbenzene Tetrachloroethene Toluene trans-1,2-Dichloroethene trans-1,3-Dichloropropene Trichloroethene Trichlorofluoromethane Vinyl Chloride 2-Propanol Surrogate: Dibromofluoromethane Surrogate: Toluene-d8 Surrogate: 4-Bromofluorobenzene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F0702 06/07/17 06/07/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/07/17 14:20 Analyzed: 06/07/17 14:32 ND ND ND ND 330 ND 30 1200 ND ND 10 80 380 ND ND ND ND ND 1300 ND ND ND ND ND ND 20 90 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 290 98.2 % 99.4 % 98.2 % 75-125 75-125 75-125 J The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 19 of 58 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 09:49 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-03-15 3PV (3F70701-10) Air 1,1,1,2-Tetrachloroethane 1,1,1-Trichloroethane 1,1,2,2-Tetrachloroethane 1,1,2-Trichloroethane 1,1,2-Trichloro-trifluoroethane 1,1-Dichloroethane 1,1-Dichloroethene 1,1-Dichloropropene 1,2,3-Trichlorobenzene 1,2,3-Trichloropropane 1,2,4-Trichlorobenzene 1,2,4-Trimethylbenzene 1,2-Dibromo-3-chloropropane 1,2-Dibromoethane 1,2-Dichlorobenzene 1,2-Dichloroethane 1,2-Dichloropropane 1,3,5-Trimethylbenzene 1,3-Dichlorobenzene 1,3-Dichloropropane 1,4-Dichlorobenzene 2,2-Dichloropropane 2-Chlorotoluene 4-Chlorotoluene Benzene Bromobenzene Bromochloromethane Bromodichloromethane Bromoform Bromomethane Carbon disulfide Carbon tetrachloride Chlorobenzene Chloroethane Chloroform Chloromethane cis-1,2-Dichloroethene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F0702 06/07/17 06/07/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/07/17 14:45 Analyzed: 06/07/17 14:58 ND ND ND ND ND ND ND ND ND ND ND 200 ND ND ND ND ND 70 ND ND ND ND ND ND 100 ND ND ND ND ND 40 ND ND ND ND ND ND 20 20 24 20 20 20 20 20 20 20 20 20 45 20 20 20 20 20 20 20 20 20 20 20 20 20 90 20 20 150 20 20 20 21 20 20 20 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 20 of 58 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 09:49 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-03-15 3PV (3F70701-10) Air cis-1,3-Dichloropropene Dibromochloromethane Dibromomethane Dichlorodifluoromethane Ethylbenzene Hexachlorobutadiene Isopropylbenzene meta- and para-Xylenes Methylene Chloride Naphthalene n-Butylbenzene n-Propylbenzene ortho-Xylene p-Isopropyltoluene sec-Butylbenzene Styrene tert-Butylbenzene Tetrachloroethene Toluene trans-1,2-Dichloroethene trans-1,3-Dichloropropene Trichloroethene Trichlorofluoromethane Vinyl Chloride 2-Propanol Surrogate: Dibromofluoromethane Surrogate: Toluene-d8 Surrogate: 4-Bromofluorobenzene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F0702 06/07/17 06/07/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/07/17 14:45 Analyzed: 06/07/17 14:58 ND ND ND ND 160 ND 10 630 ND ND ND 40 210 ND ND ND ND ND 620 ND ND ND ND ND ND 20 90 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 290 103 % 95.6 % 99.8 % 75-125 75-125 75-125 J The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 21 of 58 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 09:49 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-03-23 3PV (3F70701-11) Air 1,1,1,2-Tetrachloroethane 1,1,1-Trichloroethane 1,1,2,2-Tetrachloroethane 1,1,2-Trichloroethane 1,1,2-Trichloro-trifluoroethane 1,1-Dichloroethane 1,1-Dichloroethene 1,1-Dichloropropene 1,2,3-Trichlorobenzene 1,2,3-Trichloropropane 1,2,4-Trichlorobenzene 1,2,4-Trimethylbenzene 1,2-Dibromo-3-chloropropane 1,2-Dibromoethane 1,2-Dichlorobenzene 1,2-Dichloroethane 1,2-Dichloropropane 1,3,5-Trimethylbenzene 1,3-Dichlorobenzene 1,3-Dichloropropane 1,4-Dichlorobenzene 2,2-Dichloropropane 2-Chlorotoluene 4-Chlorotoluene Benzene Bromobenzene Bromochloromethane Bromodichloromethane Bromoform Bromomethane Carbon disulfide Carbon tetrachloride Chlorobenzene Chloroethane Chloroform Chloromethane cis-1,2-Dichloroethene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F0702 06/07/17 06/07/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/07/17 15:15 Analyzed: 06/07/17 15:27 ND ND ND ND ND ND ND ND ND ND ND 160 ND ND ND ND ND 60 ND ND ND ND ND ND 110 ND ND ND ND ND ND ND ND ND ND ND ND 20 20 24 20 20 20 20 20 20 20 20 20 45 20 20 20 20 20 20 20 20 20 20 20 20 20 90 20 20 150 20 20 20 21 20 20 20 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 22 of 58 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 09:49 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-03-23 3PV (3F70701-11) Air cis-1,3-Dichloropropene Dibromochloromethane Dibromomethane Dichlorodifluoromethane Ethylbenzene Hexachlorobutadiene Isopropylbenzene meta- and para-Xylenes Methylene Chloride Naphthalene n-Butylbenzene n-Propylbenzene ortho-Xylene p-Isopropyltoluene sec-Butylbenzene Styrene tert-Butylbenzene Tetrachloroethene Toluene trans-1,2-Dichloroethene trans-1,3-Dichloropropene Trichloroethene Trichlorofluoromethane Vinyl Chloride 2-Propanol Surrogate: Dibromofluoromethane Surrogate: Toluene-d8 Surrogate: 4-Bromofluorobenzene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F0702 06/07/17 06/07/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/07/17 15:15 Analyzed: 06/07/17 15:27 ND ND ND ND 160 ND 10 590 ND ND ND 30 200 ND ND ND ND ND 660 ND ND ND ND ND ND 20 90 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 290 102 % 96.9 % 102 % 75-125 75-125 75-125 J The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 23 of 58 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 09:49 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-01-5 3PV (3F70701-12) Air 1,1,1,2-Tetrachloroethane 1,1,1-Trichloroethane 1,1,2,2-Tetrachloroethane 1,1,2-Trichloroethane 1,1,2-Trichloro-trifluoroethane 1,1-Dichloroethane 1,1-Dichloroethene 1,1-Dichloropropene 1,2,3-Trichlorobenzene 1,2,3-Trichloropropane 1,2,4-Trichlorobenzene 1,2,4-Trimethylbenzene 1,2-Dibromo-3-chloropropane 1,2-Dibromoethane 1,2-Dichlorobenzene 1,2-Dichloroethane 1,2-Dichloropropane 1,3,5-Trimethylbenzene 1,3-Dichlorobenzene 1,3-Dichloropropane 1,4-Dichlorobenzene 2,2-Dichloropropane 2-Chlorotoluene 4-Chlorotoluene Benzene Bromobenzene Bromochloromethane Bromodichloromethane Bromoform Bromomethane Carbon disulfide Carbon tetrachloride Chlorobenzene Chloroethane Chloroform Chloromethane cis-1,2-Dichloroethene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F0702 06/07/17 06/07/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/07/17 15:40 Analyzed: 06/07/17 15:55 ND ND ND ND ND ND ND ND ND ND ND 270 ND ND ND ND ND 100 ND ND ND ND ND ND 50 ND ND 20 ND ND ND ND ND ND 110 ND ND 20 20 24 20 20 20 20 20 20 20 20 20 45 20 20 20 20 20 20 20 20 20 20 20 20 20 90 20 20 150 20 20 20 21 20 20 20 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 24 of 58 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 09:49 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-01-5 3PV (3F70701-12) Air cis-1,3-Dichloropropene Dibromochloromethane Dibromomethane Dichlorodifluoromethane Ethylbenzene Hexachlorobutadiene Isopropylbenzene meta- and para-Xylenes Methylene Chloride Naphthalene n-Butylbenzene n-Propylbenzene ortho-Xylene p-Isopropyltoluene sec-Butylbenzene Styrene tert-Butylbenzene Tetrachloroethene Toluene trans-1,2-Dichloroethene trans-1,3-Dichloropropene Trichloroethene Trichlorofluoromethane Vinyl Chloride 2-Propanol Surrogate: Dibromofluoromethane Surrogate: Toluene-d8 Surrogate: 4-Bromofluorobenzene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F0702 06/07/17 06/07/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/07/17 15:40 Analyzed: 06/07/17 15:55 ND ND ND ND 250 ND 20 1000 ND ND ND 50 350 ND ND ND ND ND 720 ND ND ND ND ND ND 20 90 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 290 103 % 98.0 % 102 % 75-125 75-125 75-125 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 25 of 58 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 09:49 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-06-5 3PV (3F70702-01) Air 1,1,1,2-Tetrachloroethane 1,1,1-Trichloroethane 1,1,2,2-Tetrachloroethane 1,1,2-Trichloroethane 1,1,2-Trichloro-trifluoroethane 1,1-Dichloroethane 1,1-Dichloroethene 1,1-Dichloropropene 1,2,3-Trichlorobenzene 1,2,3-Trichloropropane 1,2,4-Trichlorobenzene 1,2,4-Trimethylbenzene 1,2-Dibromo-3-chloropropane 1,2-Dibromoethane 1,2-Dichlorobenzene 1,2-Dichloroethane 1,2-Dichloropropane 1,3,5-Trimethylbenzene 1,3-Dichlorobenzene 1,3-Dichloropropane 1,4-Dichlorobenzene 2,2-Dichloropropane 2-Chlorotoluene 4-Chlorotoluene Benzene Bromobenzene Bromochloromethane Bromodichloromethane Bromoform Bromomethane Carbon disulfide Carbon tetrachloride Chlorobenzene Chloroethane Chloroform Chloromethane cis-1,2-Dichloroethene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F0703 06/07/17 06/07/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/07/17 17:40 Analyzed: 06/07/17 17:56 ND ND ND ND ND ND ND ND ND ND ND 50 ND ND ND ND ND 20 ND ND ND ND ND ND 90 ND ND ND ND ND ND ND ND ND ND ND ND 20 20 24 20 20 20 20 20 20 20 20 20 45 20 20 20 20 20 20 20 20 20 20 20 20 20 90 20 20 150 20 20 20 21 20 20 20 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 26 of 58 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 09:49 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-06-5 3PV (3F70702-01) Air cis-1,3-Dichloropropene Dibromochloromethane Dibromomethane Dichlorodifluoromethane Ethylbenzene Hexachlorobutadiene Isopropylbenzene meta- and para-Xylenes Methylene Chloride Naphthalene n-Butylbenzene n-Propylbenzene ortho-Xylene p-Isopropyltoluene sec-Butylbenzene Styrene tert-Butylbenzene Tetrachloroethene Toluene trans-1,2-Dichloroethene trans-1,3-Dichloropropene Trichloroethene Trichlorofluoromethane Vinyl Chloride 2-Propanol Surrogate: Dibromofluoromethane Surrogate: Toluene-d8 Surrogate: 4-Bromofluorobenzene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F0703 06/07/17 06/07/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/07/17 17:40 Analyzed: 06/07/17 17:56 ND ND ND ND 60 ND ND 200 ND ND ND 10 60 ND ND ND ND ND 270 ND ND ND ND ND ND 20 90 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 290 102 % 97.1 % 103 % 75-125 75-125 75-125 J The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 27 of 58 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 09:49 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-07-5 3PV (3F70702-02) Air 1,1,1,2-Tetrachloroethane 1,1,1-Trichloroethane 1,1,2,2-Tetrachloroethane 1,1,2-Trichloroethane 1,1,2-Trichloro-trifluoroethane 1,1-Dichloroethane 1,1-Dichloroethene 1,1-Dichloropropene 1,2,3-Trichlorobenzene 1,2,3-Trichloropropane 1,2,4-Trichlorobenzene 1,2,4-Trimethylbenzene 1,2-Dibromo-3-chloropropane 1,2-Dibromoethane 1,2-Dichlorobenzene 1,2-Dichloroethane 1,2-Dichloropropane 1,3,5-Trimethylbenzene 1,3-Dichlorobenzene 1,3-Dichloropropane 1,4-Dichlorobenzene 2,2-Dichloropropane 2-Chlorotoluene 4-Chlorotoluene Benzene Bromobenzene Bromochloromethane Bromodichloromethane Bromoform Bromomethane Carbon disulfide Carbon tetrachloride Chlorobenzene Chloroethane Chloroform Chloromethane cis-1,2-Dichloroethene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F0703 06/07/17 06/07/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/07/17 18:40 Analyzed: 06/07/17 18:55 ND ND ND ND ND 40 ND ND ND ND ND 320 ND ND ND ND ND 130 ND ND ND ND ND ND 100 ND ND ND ND ND ND ND ND ND 20 ND ND 20 20 24 20 20 20 20 20 20 20 20 20 45 20 20 20 20 20 20 20 20 20 20 20 20 20 90 20 20 150 20 20 20 21 20 20 20 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 28 of 58 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 09:49 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-07-5 3PV (3F70702-02) Air cis-1,3-Dichloropropene Dibromochloromethane Dibromomethane Dichlorodifluoromethane Ethylbenzene Hexachlorobutadiene Isopropylbenzene meta- and para-Xylenes Methylene Chloride Naphthalene n-Butylbenzene n-Propylbenzene ortho-Xylene p-Isopropyltoluene sec-Butylbenzene Styrene tert-Butylbenzene Tetrachloroethene Toluene trans-1,2-Dichloroethene trans-1,3-Dichloropropene Trichloroethene Trichlorofluoromethane Vinyl Chloride 2-Propanol Surrogate: Dibromofluoromethane Surrogate: Toluene-d8 Surrogate: 4-Bromofluorobenzene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F0703 06/07/17 06/07/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/07/17 18:40 Analyzed: 06/07/17 18:55 ND ND ND ND 260 ND 20 990 ND ND ND 50 310 20 ND ND ND 20 900 ND ND ND ND ND ND 20 90 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 290 101 % 97.5 % 102 % 75-125 75-125 75-125 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 29 of 58 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 09:49 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-05-5 3PV (3F70702-03) Air 1,1,1,2-Tetrachloroethane 1,1,1-Trichloroethane 1,1,2,2-Tetrachloroethane 1,1,2-Trichloroethane 1,1,2-Trichloro-trifluoroethane 1,1-Dichloroethane 1,1-Dichloroethene 1,1-Dichloropropene 1,2,3-Trichlorobenzene 1,2,3-Trichloropropane 1,2,4-Trichlorobenzene 1,2,4-Trimethylbenzene 1,2-Dibromo-3-chloropropane 1,2-Dibromoethane 1,2-Dichlorobenzene 1,2-Dichloroethane 1,2-Dichloropropane 1,3,5-Trimethylbenzene 1,3-Dichlorobenzene 1,3-Dichloropropane 1,4-Dichlorobenzene 2,2-Dichloropropane 2-Chlorotoluene 4-Chlorotoluene Benzene Bromobenzene Bromochloromethane Bromodichloromethane Bromoform Bromomethane Carbon disulfide Carbon tetrachloride Chlorobenzene Chloroethane Chloroform Chloromethane cis-1,2-Dichloroethene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F0703 06/07/17 06/07/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/07/17 19:10 Analyzed: 06/07/17 19:23 ND ND ND ND ND ND ND ND ND ND ND 400 ND ND ND ND ND 170 ND ND ND ND ND ND 140 ND ND ND ND ND ND ND ND ND ND ND ND 20 20 24 20 20 20 20 20 20 20 20 20 45 20 20 20 20 20 20 20 20 20 20 20 20 20 90 20 20 150 20 20 20 21 20 20 20 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 30 of 58 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 09:49 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-05-5 3PV (3F70702-03) Air cis-1,3-Dichloropropene Dibromochloromethane Dibromomethane Dichlorodifluoromethane Ethylbenzene Hexachlorobutadiene Isopropylbenzene meta- and para-Xylenes Methylene Chloride Naphthalene n-Butylbenzene n-Propylbenzene ortho-Xylene p-Isopropyltoluene sec-Butylbenzene Styrene tert-Butylbenzene Tetrachloroethene Toluene trans-1,2-Dichloroethene trans-1,3-Dichloropropene Trichloroethene Trichlorofluoromethane Vinyl Chloride 2-Propanol Surrogate: Dibromofluoromethane Surrogate: Toluene-d8 Surrogate: 4-Bromofluorobenzene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F0703 06/07/17 06/07/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/07/17 19:10 Analyzed: 06/07/17 19:23 ND ND ND ND 280 ND 30 1200 ND ND 10 70 360 10 ND ND ND 20 900 ND ND ND ND ND ND 20 90 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 290 98.6 % 98.3 % 100 % 75-125 75-125 75-125 J J The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 31 of 58 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 09:49 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-05-13 3PV (3F70702-04) Air 1,1,1,2-Tetrachloroethane 1,1,1-Trichloroethane 1,1,2,2-Tetrachloroethane 1,1,2-Trichloroethane 1,1,2-Trichloro-trifluoroethane 1,1-Dichloroethane 1,1-Dichloroethene 1,1-Dichloropropene 1,2,3-Trichlorobenzene 1,2,3-Trichloropropane 1,2,4-Trichlorobenzene 1,2,4-Trimethylbenzene 1,2-Dibromo-3-chloropropane 1,2-Dibromoethane 1,2-Dichlorobenzene 1,2-Dichloroethane 1,2-Dichloropropane 1,3,5-Trimethylbenzene 1,3-Dichlorobenzene 1,3-Dichloropropane 1,4-Dichlorobenzene 2,2-Dichloropropane 2-Chlorotoluene 4-Chlorotoluene Benzene Bromobenzene Bromochloromethane Bromodichloromethane Bromoform Bromomethane Carbon disulfide Carbon tetrachloride Chlorobenzene Chloroethane Chloroform Chloromethane cis-1,2-Dichloroethene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F0703 06/07/17 06/07/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/07/17 21:40 Analyzed: 06/07/17 21:55 ND ND ND ND ND 110 ND ND ND ND ND 80 ND ND ND ND ND 30 ND ND ND ND ND ND 80 ND ND ND ND ND ND ND ND ND ND ND ND 20 20 24 20 20 20 20 20 20 20 20 20 45 20 20 20 20 20 20 20 20 20 20 20 20 20 90 20 20 150 20 20 20 21 20 20 20 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 32 of 58 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 09:49 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-05-13 3PV (3F70702-04) Air cis-1,3-Dichloropropene Dibromochloromethane Dibromomethane Dichlorodifluoromethane Ethylbenzene Hexachlorobutadiene Isopropylbenzene meta- and para-Xylenes Methylene Chloride Naphthalene n-Butylbenzene n-Propylbenzene ortho-Xylene p-Isopropyltoluene sec-Butylbenzene Styrene tert-Butylbenzene Tetrachloroethene Toluene trans-1,2-Dichloroethene trans-1,3-Dichloropropene Trichloroethene Trichlorofluoromethane Vinyl Chloride 2-Propanol Surrogate: Dibromofluoromethane Surrogate: Toluene-d8 Surrogate: 4-Bromofluorobenzene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F0703 06/07/17 06/07/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/07/17 21:40 Analyzed: 06/07/17 21:55 ND ND ND ND 50 ND 10 370 ND ND ND 10 100 ND ND ND ND 250 270 ND ND 50 ND ND ND 20 90 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 290 100 % 97.7 % 101 % 75-125 75-125 75-125 J J The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 33 of 58 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 09:49 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-04-5 3PV (3F70702-05) Air 1,1,1,2-Tetrachloroethane 1,1,1-Trichloroethane 1,1,2,2-Tetrachloroethane 1,1,2-Trichloroethane 1,1,2-Trichloro-trifluoroethane 1,1-Dichloroethane 1,1-Dichloroethene 1,1-Dichloropropene 1,2,3-Trichlorobenzene 1,2,3-Trichloropropane 1,2,4-Trichlorobenzene 1,2,4-Trimethylbenzene 1,2-Dibromo-3-chloropropane 1,2-Dibromoethane 1,2-Dichlorobenzene 1,2-Dichloroethane 1,2-Dichloropropane 1,3,5-Trimethylbenzene 1,3-Dichlorobenzene 1,3-Dichloropropane 1,4-Dichlorobenzene 2,2-Dichloropropane 2-Chlorotoluene 4-Chlorotoluene Benzene Bromobenzene Bromochloromethane Bromodichloromethane Bromoform Bromomethane Carbon disulfide Carbon tetrachloride Chlorobenzene Chloroethane Chloroform Chloromethane cis-1,2-Dichloroethene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F0703 06/07/17 06/07/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/07/17 22:10 Analyzed: 06/07/17 22:23 ND ND ND ND ND ND ND ND ND ND ND 890 ND ND ND ND ND 370 ND ND ND ND ND ND 60 ND ND ND ND ND ND ND ND ND ND ND ND 20 20 24 20 20 20 20 20 20 20 20 20 45 20 20 20 20 20 20 20 20 20 20 20 20 20 90 20 20 150 20 20 20 21 20 20 20 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 34 of 58 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 09:49 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-04-5 3PV (3F70702-05) Air cis-1,3-Dichloropropene Dibromochloromethane Dibromomethane Dichlorodifluoromethane Ethylbenzene Hexachlorobutadiene Isopropylbenzene meta- and para-Xylenes Methylene Chloride Naphthalene n-Butylbenzene n-Propylbenzene ortho-Xylene p-Isopropyltoluene sec-Butylbenzene Styrene tert-Butylbenzene Tetrachloroethene Toluene trans-1,2-Dichloroethene trans-1,3-Dichloropropene Trichloroethene Trichlorofluoromethane Vinyl Chloride 2-Propanol Surrogate: Dibromofluoromethane Surrogate: Toluene-d8 Surrogate: 4-Bromofluorobenzene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F0703 06/07/17 06/07/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/07/17 22:10 Analyzed: 06/07/17 22:23 ND ND ND ND 550 ND 50 2400 ND ND 20 160 770 20 ND ND ND 10 1200 ND ND ND ND ND ND 20 90 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 290 98.3 % 96.8 % 99.4 % 75-125 75-125 75-125 J The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 35 of 58 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 09:49 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-04-13 3PV (3F70702-06) Air 1,1,1,2-Tetrachloroethane 1,1,1-Trichloroethane 1,1,2,2-Tetrachloroethane 1,1,2-Trichloroethane 1,1,2-Trichloro-trifluoroethane 1,1-Dichloroethane 1,1-Dichloroethene 1,1-Dichloropropene 1,2,3-Trichlorobenzene 1,2,3-Trichloropropane 1,2,4-Trichlorobenzene 1,2,4-Trimethylbenzene 1,2-Dibromo-3-chloropropane 1,2-Dibromoethane 1,2-Dichlorobenzene 1,2-Dichloroethane 1,2-Dichloropropane 1,3,5-Trimethylbenzene 1,3-Dichlorobenzene 1,3-Dichloropropane 1,4-Dichlorobenzene 2,2-Dichloropropane 2-Chlorotoluene 4-Chlorotoluene Benzene Bromobenzene Bromochloromethane Bromodichloromethane Bromoform Bromomethane Carbon disulfide Carbon tetrachloride Chlorobenzene Chloroethane Chloroform Chloromethane cis-1,2-Dichloroethene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F0703 06/07/17 06/07/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/07/17 22:40 Analyzed: 06/07/17 22:52 ND ND ND ND ND ND ND ND ND ND ND 80 ND ND ND ND ND 30 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 20 20 24 20 20 20 20 20 20 20 20 20 45 20 20 20 20 20 20 20 20 20 20 20 20 20 90 20 20 150 20 20 20 21 20 20 20 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 36 of 58 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 09:49 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-04-13 3PV (3F70702-06) Air cis-1,3-Dichloropropene Dibromochloromethane Dibromomethane Dichlorodifluoromethane Ethylbenzene Hexachlorobutadiene Isopropylbenzene meta- and para-Xylenes Methylene Chloride Naphthalene n-Butylbenzene n-Propylbenzene ortho-Xylene p-Isopropyltoluene sec-Butylbenzene Styrene tert-Butylbenzene Tetrachloroethene Toluene trans-1,2-Dichloroethene trans-1,3-Dichloropropene Trichloroethene Trichlorofluoromethane Vinyl Chloride 2-Propanol Surrogate: Dibromofluoromethane Surrogate: Toluene-d8 Surrogate: 4-Bromofluorobenzene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F0703 06/07/17 06/07/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/07/17 22:40 Analyzed: 06/07/17 22:52 ND ND ND ND 40 ND ND 190 ND ND ND 10 60 ND ND ND ND ND 100 ND ND ND ND ND ND 20 90 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 290 101 % 95.3 % 103 % 75-125 75-125 75-125 J The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 37 of 58 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 09:49 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-03-5 3PV (3F70702-07) Air 1,1,1,2-Tetrachloroethane 1,1,1-Trichloroethane 1,1,2,2-Tetrachloroethane 1,1,2-Trichloroethane 1,1,2-Trichloro-trifluoroethane 1,1-Dichloroethane 1,1-Dichloroethene 1,1-Dichloropropene 1,2,3-Trichlorobenzene 1,2,3-Trichloropropane 1,2,4-Trichlorobenzene 1,2,4-Trimethylbenzene 1,2-Dibromo-3-chloropropane 1,2-Dibromoethane 1,2-Dichlorobenzene 1,2-Dichloroethane 1,2-Dichloropropane 1,3,5-Trimethylbenzene 1,3-Dichlorobenzene 1,3-Dichloropropane 1,4-Dichlorobenzene 2,2-Dichloropropane 2-Chlorotoluene 4-Chlorotoluene Benzene Bromobenzene Bromochloromethane Bromodichloromethane Bromoform Bromomethane Carbon disulfide Carbon tetrachloride Chlorobenzene Chloroethane Chloroform Chloromethane cis-1,2-Dichloroethene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F0703 06/07/17 06/07/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/07/17 23:10 Analyzed: 06/07/17 23:20 ND ND ND ND ND ND ND ND ND ND ND 610 ND ND ND ND ND 230 ND ND ND ND ND ND 140 ND ND ND ND ND ND ND ND ND ND ND ND 20 20 24 20 20 20 20 20 20 20 20 20 45 20 20 20 20 20 20 20 20 20 20 20 20 20 90 20 20 150 20 20 20 21 20 20 20 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 38 of 58 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 09:49 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-03-5 3PV (3F70702-07) Air cis-1,3-Dichloropropene Dibromochloromethane Dibromomethane Dichlorodifluoromethane Ethylbenzene Hexachlorobutadiene Isopropylbenzene meta- and para-Xylenes Methylene Chloride Naphthalene n-Butylbenzene n-Propylbenzene ortho-Xylene p-Isopropyltoluene sec-Butylbenzene Styrene tert-Butylbenzene Tetrachloroethene Toluene trans-1,2-Dichloroethene trans-1,3-Dichloropropene Trichloroethene Trichlorofluoromethane Vinyl Chloride 2-Propanol Surrogate: Dibromofluoromethane Surrogate: Toluene-d8 Surrogate: 4-Bromofluorobenzene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F0703 06/07/17 06/07/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/07/17 23:10 Analyzed: 06/07/17 23:20 ND ND ND ND 490 ND 50 1800 ND ND 20 130 540 10 ND 10 ND ND 1400 ND ND ND ND ND ND 20 90 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 290 101 % 99.8 % 100 % 75-125 75-125 75-125 J J The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 39 of 58 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 09:49 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-03-15 3PV (3F70702-08) Air 1,1,1,2-Tetrachloroethane 1,1,1-Trichloroethane 1,1,2,2-Tetrachloroethane 1,1,2-Trichloroethane 1,1,2-Trichloro-trifluoroethane 1,1-Dichloroethane 1,1-Dichloroethene 1,1-Dichloropropene 1,2,3-Trichlorobenzene 1,2,3-Trichloropropane 1,2,4-Trichlorobenzene 1,2,4-Trimethylbenzene 1,2-Dibromo-3-chloropropane 1,2-Dibromoethane 1,2-Dichlorobenzene 1,2-Dichloroethane 1,2-Dichloropropane 1,3,5-Trimethylbenzene 1,3-Dichlorobenzene 1,3-Dichloropropane 1,4-Dichlorobenzene 2,2-Dichloropropane 2-Chlorotoluene 4-Chlorotoluene Benzene Bromobenzene Bromochloromethane Bromodichloromethane Bromoform Bromomethane Carbon disulfide Carbon tetrachloride Chlorobenzene Chloroethane Chloroform Chloromethane cis-1,2-Dichloroethene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F0703 06/07/17 06/07/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/07/17 23:35 Analyzed: 06/07/17 23:48 ND ND ND ND ND ND ND ND ND ND ND 250 ND ND ND ND ND 90 ND ND ND ND ND ND 100 ND ND ND ND ND ND ND ND ND ND ND ND 20 20 24 20 20 20 20 20 20 20 20 20 45 20 20 20 20 20 20 20 20 20 20 20 20 20 90 20 20 150 20 20 20 21 20 20 20 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 40 of 58 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 09:49 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-03-15 3PV (3F70702-08) Air cis-1,3-Dichloropropene Dibromochloromethane Dibromomethane Dichlorodifluoromethane Ethylbenzene Hexachlorobutadiene Isopropylbenzene meta- and para-Xylenes Methylene Chloride Naphthalene n-Butylbenzene n-Propylbenzene ortho-Xylene p-Isopropyltoluene sec-Butylbenzene Styrene tert-Butylbenzene Tetrachloroethene Toluene trans-1,2-Dichloroethene trans-1,3-Dichloropropene Trichloroethene Trichlorofluoromethane Vinyl Chloride 2-Propanol Surrogate: Dibromofluoromethane Surrogate: Toluene-d8 Surrogate: 4-Bromofluorobenzene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F0703 06/07/17 06/07/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/07/17 23:35 Analyzed: 06/07/17 23:48 ND ND ND ND 220 ND 20 810 ND ND ND 50 260 ND ND ND ND ND 730 ND ND ND ND ND ND 20 90 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 290 105 % 95.7 % 99.4 % 75-125 75-125 75-125 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 41 of 58 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 09:49 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-03-23 3PV (3F70702-09) Air 1,1,1,2-Tetrachloroethane 1,1,1-Trichloroethane 1,1,2,2-Tetrachloroethane 1,1,2-Trichloroethane 1,1,2-Trichloro-trifluoroethane 1,1-Dichloroethane 1,1-Dichloroethene 1,1-Dichloropropene 1,2,3-Trichlorobenzene 1,2,3-Trichloropropane 1,2,4-Trichlorobenzene 1,2,4-Trimethylbenzene 1,2-Dibromo-3-chloropropane 1,2-Dibromoethane 1,2-Dichlorobenzene 1,2-Dichloroethane 1,2-Dichloropropane 1,3,5-Trimethylbenzene 1,3-Dichlorobenzene 1,3-Dichloropropane 1,4-Dichlorobenzene 2,2-Dichloropropane 2-Chlorotoluene 4-Chlorotoluene Benzene Bromobenzene Bromochloromethane Bromodichloromethane Bromoform Bromomethane Carbon disulfide Carbon tetrachloride Chlorobenzene Chloroethane Chloroform Chloromethane cis-1,2-Dichloroethene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F0703 06/08/17 06/08/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/08/17 00:05 Analyzed: 06/08/17 00:17 ND ND ND ND ND ND ND ND ND ND ND 310 ND ND ND ND ND 110 ND ND ND ND ND ND 100 ND ND ND ND ND ND ND ND ND ND ND ND 20 20 24 20 20 20 20 20 20 20 20 20 45 20 20 20 20 20 20 20 20 20 20 20 20 20 90 20 20 150 20 20 20 21 20 20 20 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 42 of 58 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 09:49 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-03-23 3PV (3F70702-09) Air cis-1,3-Dichloropropene Dibromochloromethane Dibromomethane Dichlorodifluoromethane Ethylbenzene Hexachlorobutadiene Isopropylbenzene meta- and para-Xylenes Methylene Chloride Naphthalene n-Butylbenzene n-Propylbenzene ortho-Xylene p-Isopropyltoluene sec-Butylbenzene Styrene tert-Butylbenzene Tetrachloroethene Toluene trans-1,2-Dichloroethene trans-1,3-Dichloropropene Trichloroethene Trichlorofluoromethane Vinyl Chloride 2-Propanol Surrogate: Dibromofluoromethane Surrogate: Toluene-d8 Surrogate: 4-Bromofluorobenzene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F0703 06/08/17 06/08/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/08/17 00:05 Analyzed: 06/08/17 00:17 ND ND ND ND 310 ND 30 1100 ND ND ND 70 360 ND ND ND ND ND 1000 ND ND ND ND ND ND 20 90 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 290 102 % 97.4 % 100 % 75-125 75-125 75-125 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 43 of 58 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 09:49 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-01-5 3PV (3F70702-10) Air 1,1,1,2-Tetrachloroethane 1,1,1-Trichloroethane 1,1,2,2-Tetrachloroethane 1,1,2-Trichloroethane 1,1,2-Trichloro-trifluoroethane 1,1-Dichloroethane 1,1-Dichloroethene 1,1-Dichloropropene 1,2,3-Trichlorobenzene 1,2,3-Trichloropropane 1,2,4-Trichlorobenzene 1,2,4-Trimethylbenzene 1,2-Dibromo-3-chloropropane 1,2-Dibromoethane 1,2-Dichlorobenzene 1,2-Dichloroethane 1,2-Dichloropropane 1,3,5-Trimethylbenzene 1,3-Dichlorobenzene 1,3-Dichloropropane 1,4-Dichlorobenzene 2,2-Dichloropropane 2-Chlorotoluene 4-Chlorotoluene Benzene Bromobenzene Bromochloromethane Bromodichloromethane Bromoform Bromomethane Carbon disulfide Carbon tetrachloride Chlorobenzene Chloroethane Chloroform Chloromethane cis-1,2-Dichloroethene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F0703 06/08/17 06/08/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/08/17 00:30 Analyzed: 06/08/17 00:45 ND ND ND ND ND ND ND ND ND ND ND 430 ND ND ND ND ND 160 ND ND ND ND ND ND 50 ND ND 40 ND ND ND ND ND ND 170 ND ND 20 20 24 20 20 20 20 20 20 20 20 20 45 20 20 20 20 20 20 20 20 20 20 20 20 20 90 20 20 150 20 20 20 21 20 20 20 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 44 of 58 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 09:49 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-01-5 3PV (3F70702-10) Air cis-1,3-Dichloropropene Dibromochloromethane Dibromomethane Dichlorodifluoromethane Ethylbenzene Hexachlorobutadiene Isopropylbenzene meta- and para-Xylenes Methylene Chloride Naphthalene n-Butylbenzene n-Propylbenzene ortho-Xylene p-Isopropyltoluene sec-Butylbenzene Styrene tert-Butylbenzene Tetrachloroethene Toluene trans-1,2-Dichloroethene trans-1,3-Dichloropropene Trichloroethene Trichlorofluoromethane Vinyl Chloride 2-Propanol Surrogate: Dibromofluoromethane Surrogate: Toluene-d8 Surrogate: 4-Bromofluorobenzene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F0703 06/08/17 06/08/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/08/17 00:30 Analyzed: 06/08/17 00:45 ND ND ND ND 310 ND 30 1300 ND ND ND 70 450 ND ND ND ND ND 750 ND ND ND ND ND ND 20 90 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 290 104 % 96.7 % 101 % 75-125 75-125 75-125 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 45 of 58 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 09:49 Volatile Organic Compounds - Quality Control Environmental Support Technologies Result Reporting Limit 1,1,1,2-Tetrachloroethane ND 20 ug/m³ Air 1,1,1-Trichloroethane ND 20 " 1,1,2,2-Tetrachloroethane ND 24 " 1,1,2-Trichloroethane ND 20 " 1,1,2-Trichloro-trifluoroethane ND 20 " 1,1-Dichloroethane ND 20 " 1,1-Dichloroethene ND 20 " 1,1-Dichloropropene ND 20 " 1,2,3-Trichlorobenzene ND 20 " 1,2,3-Trichloropropane ND 20 " 1,2,4-Trichlorobenzene ND 20 " 1,2,4-Trimethylbenzene ND 20 " 1,2-Dibromo-3-chloropropane ND 45 " 1,2-Dibromoethane ND 20 " 1,2-Dichlorobenzene ND 20 " 1,2-Dichloroethane ND 20 " 1,2-Dichloropropane ND 20 " 1,3,5-Trimethylbenzene ND 20 " 1,3-Dichlorobenzene ND 20 " 1,3-Dichloropropane ND 20 " 1,4-Dichlorobenzene ND 20 " 2,2-Dichloropropane ND 20 " 2-Chlorotoluene ND 20 " 4-Chlorotoluene ND 20 " Benzene ND 20 " Bromobenzene ND 20 " Bromochloromethane ND 90 " Bromodichloromethane ND 20 " Bromoform ND 20 " Bromomethane ND 150 " Carbon disulfide ND 20 " Carbon tetrachloride ND 20 " Chlorobenzene ND 20 " Analyte Units Spike Level Source Result %REC %REC Limits RPD RPD Limit Notes Batch 37F0702 - Volatiles Blank (37F0702-BLK1) Prepared & Analyzed: 06/07/17 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 46 of 58 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 09:49 Volatile Organic Compounds - Quality Control Environmental Support Technologies Result Reporting Limit Chloroethane ND 21 ug/m³ Air Chloroform ND 20 " Chloromethane ND 20 " cis-1,2-Dichloroethene ND 20 " cis-1,3-Dichloropropene ND 20 " Dibromochloromethane ND 90 " Dibromomethane ND 20 " Dichlorodifluoromethane ND 20 " Ethylbenzene ND 20 " Hexachlorobutadiene ND 20 " Isopropylbenzene ND 20 " meta- and para-Xylenes ND 20 " Methylene Chloride ND 20 " Naphthalene ND 20 " n-Butylbenzene ND 20 " n-Propylbenzene ND 20 " ortho-Xylene ND 20 " p-Isopropyltoluene ND 20 " sec-Butylbenzene ND 20 " Styrene ND 20 " tert-Butylbenzene ND 20 " Tetrachloroethene ND 20 " Toluene ND 20 " trans-1,2-Dichloroethene ND 20 " trans-1,3-Dichloropropene ND 20 " Trichloroethene ND 20 " Trichlorofluoromethane ND 20 " Vinyl Chloride ND 20 " 2-Propanol ND 290 " Analyte Units Spike Level Source Result %REC %REC Limits RPD RPD Limit Notes Batch 37F0702 - Volatiles Blank (37F0702-BLK1) Prepared & Analyzed: 06/07/17 Surrogate: Dibromofluoromethane 2730 " 2500 109 75-125 Surrogate: Toluene-d8 2350 " 2500 94.2 75-125 Surrogate: 4-Bromofluorobenzene 2610 " 2500 105 75-125 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 47 of 58 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 09:49 Volatile Organic Compounds - Quality Control Environmental Support Technologies Result Reporting Limit 1,1,1,2-Tetrachloroethane 1330 20 ug/m³ Air 1250 106 75-136 1,1,1-Trichloroethane 1290 20 " 1250 103 73-134 1,1,2,2-Tetrachloroethane 1170 24 " 1250 93.6 56-149 1,1,2-Trichloroethane 1230 20 " 1250 98.4 67-137 1,1,2-Trichloro-trifluoroethane 1340 20 " 1250 107 83-125 1,1-Dichloroethane 1100 20 " 1250 88.0 80-121 1,1-Dichloroethene 1350 20 " 1250 108 73-137 1,1-Dichloropropene 1180 20 " 1250 94.4 77-122 1,2,3-Trichlorobenzene 1190 20 " 1250 95.2 67-133 1,2,3-Trichloropropane 1370 20 " 1250 110 56-145 1,2,4-Trichlorobenzene 1250 20 " 1250 100 71-135 1,2,4-Trimethylbenzene 1190 20 " 1250 95.2 76-140 1,2-Dibromo-3-chloropropane 1350 45 " 1250 108 43-158 1,2-Dibromoethane 1350 20 " 1250 108 80-130 1,2-Dichlorobenzene 1230 20 " 1250 98.4 67-139 1,2-Dichloroethane 1110 20 " 1250 88.8 75-131 1,2-Dichloropropane 1360 20 " 1250 109 62-144 1,3,5-Trimethylbenzene 1320 20 " 1250 106 78-125 1,3-Dichlorobenzene 1370 20 " 1250 110 82-120 1,3-Dichloropropane 1160 20 " 1250 92.8 61-145 1,4-Dichlorobenzene 1340 20 " 1250 107 84-120 2,2-Dichloropropane 1230 20 " 1250 98.4 68-134 2-Chlorotoluene 1220 20 " 1250 97.6 65-127 4-Chlorotoluene 1190 20 " 1250 95.2 65-127 Benzene 1320 20 " 1250 106 79-118 Bromobenzene 1360 20 " 1250 109 69-140 Bromochloromethane 1260 90 " 1250 101 61-141 Bromodichloromethane 1230 20 " 1250 98.4 67-137 Bromoform 1220 20 " 1250 97.6 57-152 Bromomethane 1340 150 " 1250 107 51-148 Carbon disulfide 1250 20 " 1250 100 61-140 Carbon tetrachloride 1140 20 " 1250 91.2 74-143 Chlorobenzene 1300 20 " 1250 104 67-140 Analyte Units Spike Level Source Result %REC %REC Limits RPD RPD Limit Notes Batch 37F0702 - Volatiles LCS (37F0702-BS1) Prepared & Analyzed: 06/07/17 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 48 of 58 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 09:49 Volatile Organic Compounds - Quality Control Environmental Support Technologies Result Reporting Limit Chloroethane 1270 21 ug/m³ Air 1250 102 60-137 Chloroform 1210 20 " 1250 96.8 82-140 Chloromethane 1200 20 " 1250 96.0 58-139 cis-1,2-Dichloroethene 1360 20 " 1250 109 85-116 cis-1,3-Dichloropropene 1110 20 " 1250 88.8 66-142 Dibromochloromethane 1200 90 " 1250 96.0 61-140 Dibromomethane 1220 20 " 1250 97.6 66-143 Dichlorodifluoromethane 1290 20 " 1250 103 47-129 Ethylbenzene 1200 20 " 1250 96.0 70-125 Hexachlorobutadiene 1260 20 " 1250 101 71-145 Isopropylbenzene 1300 20 " 1250 104 85-116 meta- and para-Xylenes 2590 20 " 2500 104 83-115 Methylene Chloride 1190 20 " 1250 95.2 81-126 Naphthalene 1340 20 " 1250 107 56-140 n-Butylbenzene 1250 20 " 1250 100 60-149 n-Propylbenzene 1320 20 " 1250 106 77-129 ortho-Xylene 1310 20 " 1250 105 85-115 p-Isopropyltoluene 1260 20 " 1250 101 63-144 sec-Butylbenzene 1380 20 " 1250 110 68-128 Styrene 1370 20 " 1250 110 65-142 tert-Butylbenzene 1300 20 " 1250 104 60-128 Tetrachloroethene 1230 20 " 1250 98.4 60-144 Toluene 1270 20 " 1250 102 70-115 trans-1,2-Dichloroethene 1350 20 " 1250 108 72-133 trans-1,3-Dichloropropene 1150 20 " 1250 92.0 68-140 Trichloroethene 1250 20 " 1250 100 68-132 Trichlorofluoromethane 1350 20 " 1250 108 62-144 Vinyl Chloride 1380 20 " 1250 110 66-137 Analyte Units Spike Level Source Result %REC %REC Limits RPD RPD Limit Notes Batch 37F0702 - Volatiles LCS (37F0702-BS1) Prepared & Analyzed: 06/07/17 Surrogate: Dibromofluoromethane 13900 " 12500 111 75-125 Surrogate: Toluene-d8 12400 " 12500 99.5 75-125 Surrogate: 4-Bromofluorobenzene 12800 " 12500 102 75-125 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 49 of 58 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 09:49 Volatile Organic Compounds - Quality Control Environmental Support Technologies Analyte Result Reporting Limit Units Spike Level Source Result %REC %REC Limits RPD RPD Limit Notes Batch 37F0702 - Volatiles Duplicate (37F0702-DUP1) Source: 3F70701-03 Prepared & Analyzed: 06/07/17 1,1,1,2-Tetrachloroethane ND 20 ug/m³ Air ND 50 1,1,1-Trichloroethane ND 20 " ND 50 1,1,2,2-Tetrachloroethane ND 24 " ND 50 1,1,2-Trichloroethane ND 20 " ND 50 1,1,2-Trichloro-trifluoroethane ND 20 " ND 50 1,1-Dichloroethane ND 20 " ND 50 1,1-Dichloroethene ND 20 " ND 50 1,1-Dichloropropene ND 20 " ND 50 1,2,3-Trichlorobenzene ND 20 " ND 50 1,2,3-Trichloropropane ND 20 " ND 50 1,2,4-Trichlorobenzene ND 20 " ND 1,2,4-Trimethylbenzene 30.0 20 " 20.0 1,2-Dibromo-3-chloropropane ND 45 " ND 50 1,2-Dibromoethane ND 20 " ND 50 1,2-Dichlorobenzene ND 20 " ND 50 1,2-Dichloroethane ND 20 " ND 50 1,2-Dichloropropane ND 20 " ND 10.0 20 " 10.0 1,3-Dichlorobenzene ND 20 " ND 50 1,3-Dichloropropane ND 20 " ND 50 1,4-Dichlorobenzene ND 20 " ND 50 2,2-Dichloropropane ND 20 " ND 50 2-Chlorotoluene ND 20 " ND 50 4-Chlorotoluene ND 20 " ND 50.0 20 " 30.0 Bromobenzene ND 20 " ND 50 Bromochloromethane ND 90 " ND 50 Bromodichloromethane ND 20 " ND 50 Bromoform ND 20 " ND 50 Bromomethane ND 150 " ND 50 Carbon disulfide ND 20 " ND 50 Carbon tetrachloride ND 20 " ND 50 Chlorobenzene ND 20 " ND 50 1,3,5-Trimethylbenzene Benzene 50 40.0 50 50 0.00 50 J 50 50.0 50 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 50 of 58 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 09:49 Volatile Organic Compounds - Quality Control Environmental Support Technologies Analyte Result Reporting Limit Units Spike Level Source Result %REC %REC Limits RPD RPD Limit Notes Batch 37F0702 - Volatiles Duplicate (37F0702-DUP1) Source: 3F70701-03 Prepared & Analyzed: 06/07/17 Chloroethane ND 21 ug/m³ Air ND 50 Chloroform ND 20 " ND 50 Chloromethane ND 20 " ND 50 cis-1,2-Dichloroethene ND 20 " ND 50 cis-1,3-Dichloropropene ND 20 " ND 50 Dibromochloromethane ND 90 " ND 50 Dibromomethane ND 20 " ND 50 Dichlorodifluoromethane ND 20 " ND 50 Ethylbenzene 30.0 20 " 20.0 Hexachlorobutadiene ND 20 " ND Isopropylbenzene ND 20 " ND 90.0 20 " 60.0 Methylene Chloride ND 20 " ND 50 Naphthalene ND 20 " ND 50 n-Butylbenzene ND 20 " ND 50 n-Propylbenzene ND 20 " ND 30.0 20 " 20.0 p-Isopropyltoluene ND 20 " ND 50 sec-Butylbenzene ND 20 " ND 50 Styrene ND 20 " ND 50 tert-Butylbenzene ND 20 " ND 50 Tetrachloroethene ND 20 " ND Toluene 130 20 " 70.0 trans-1,2-Dichloroethene ND 20 " ND 50 trans-1,3-Dichloropropene ND 20 " ND 50 Trichloroethene ND 20 " ND 50 Trichlorofluoromethane ND 20 " ND 50 Vinyl Chloride ND 20 " ND 50 2-Propanol ND 290 " ND 200 meta- and para-Xylenes ortho-Xylene 40.0 50 50 50 40.0 50 50 40.0 50 50 60.0 Surrogate: Dibromofluoromethane 2510 " 2500 100 75-125 Surrogate: Toluene-d8 2470 " 2500 98.6 75-125 Surrogate: 4-Bromofluorobenzene 2580 " 2500 103 75-125 50 QR-04 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 51 of 58 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 09:49 Volatile Organic Compounds - Quality Control Environmental Support Technologies Result Reporting Limit 1,1,1,2-Tetrachloroethane ND 20 ug/m³ Air 1,1,1-Trichloroethane ND 20 " 1,1,2,2-Tetrachloroethane ND 24 " 1,1,2-Trichloroethane ND 20 " 1,1,2-Trichloro-trifluoroethane ND 20 " 1,1-Dichloroethane ND 20 " 1,1-Dichloroethene ND 20 " 1,1-Dichloropropene ND 20 " 1,2,3-Trichlorobenzene ND 20 " 1,2,3-Trichloropropane ND 20 " 1,2,4-Trichlorobenzene ND 20 " 1,2,4-Trimethylbenzene ND 20 " 1,2-Dibromo-3-chloropropane ND 45 " 1,2-Dibromoethane ND 20 " 1,2-Dichlorobenzene ND 20 " 1,2-Dichloroethane ND 20 " 1,2-Dichloropropane ND 20 " 1,3,5-Trimethylbenzene ND 20 " 1,3-Dichlorobenzene ND 20 " 1,3-Dichloropropane ND 20 " 1,4-Dichlorobenzene ND 20 " 2,2-Dichloropropane ND 20 " 2-Chlorotoluene ND 20 " 4-Chlorotoluene ND 20 " Benzene ND 20 " Bromobenzene ND 20 " Bromochloromethane ND 90 " Bromodichloromethane ND 20 " Bromoform ND 20 " Bromomethane ND 150 " Carbon disulfide ND 20 " Carbon tetrachloride ND 20 " Chlorobenzene ND 20 " Analyte Units Spike Level Source Result %REC %REC Limits RPD RPD Limit Notes Batch 37F0703 - Volatiles Blank (37F0703-BLK1) Prepared & Analyzed: 06/07/17 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 52 of 58 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 09:49 Volatile Organic Compounds - Quality Control Environmental Support Technologies Result Reporting Limit Chloroethane ND 21 ug/m³ Air Chloroform ND 20 " Chloromethane ND 20 " cis-1,2-Dichloroethene ND 20 " cis-1,3-Dichloropropene ND 20 " Dibromochloromethane ND 90 " Dibromomethane ND 20 " Dichlorodifluoromethane ND 20 " Ethylbenzene ND 20 " Hexachlorobutadiene ND 20 " Isopropylbenzene ND 20 " meta- and para-Xylenes ND 20 " Methylene Chloride ND 20 " Naphthalene ND 20 " n-Butylbenzene ND 20 " n-Propylbenzene ND 20 " ortho-Xylene ND 20 " p-Isopropyltoluene ND 20 " sec-Butylbenzene ND 20 " Styrene ND 20 " tert-Butylbenzene ND 20 " Tetrachloroethene ND 20 " Toluene ND 20 " trans-1,2-Dichloroethene ND 20 " trans-1,3-Dichloropropene ND 20 " Trichloroethene ND 20 " Trichlorofluoromethane ND 20 " Vinyl Chloride ND 20 " 2-Propanol ND 290 " Analyte Units Spike Level Source Result %REC %REC Limits RPD RPD Limit Notes Batch 37F0703 - Volatiles Blank (37F0703-BLK1) Prepared & Analyzed: 06/07/17 Surrogate: Dibromofluoromethane 2720 " 2500 109 75-125 Surrogate: Toluene-d8 2350 " 2500 93.9 75-125 Surrogate: 4-Bromofluorobenzene 2540 " 2500 101 75-125 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 53 of 58 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 09:49 Volatile Organic Compounds - Quality Control Environmental Support Technologies Result Reporting Limit 1,1,1,2-Tetrachloroethane 1180 20 ug/m³ Air 1250 94.4 75-136 1,1,1-Trichloroethane 1350 20 " 1250 108 73-134 1,1,2,2-Tetrachloroethane 1330 24 " 1250 106 56-149 1,1,2-Trichloroethane 1130 20 " 1250 90.4 67-137 1,1,2-Trichloro-trifluoroethane 1270 20 " 1250 102 83-125 1,1-Dichloroethane 1310 20 " 1250 105 80-121 1,1-Dichloroethene 1200 20 " 1250 96.0 73-137 1,1-Dichloropropene 1350 20 " 1250 108 77-122 1,2,3-Trichlorobenzene 1350 20 " 1250 108 67-133 1,2,3-Trichloropropane 1380 20 " 1250 110 56-145 1,2,4-Trichlorobenzene 1270 20 " 1250 102 71-135 1,2,4-Trimethylbenzene 1350 20 " 1250 108 76-140 1,2-Dibromo-3-chloropropane 1000 45 " 1250 80.0 43-158 1,2-Dibromoethane 1110 20 " 1250 88.8 80-130 1,2-Dichlorobenzene 1360 20 " 1250 109 67-139 1,2-Dichloroethane 1170 20 " 1250 93.6 75-131 1,2-Dichloropropane 1330 20 " 1250 106 62-144 1,3,5-Trimethylbenzene 1160 20 " 1250 92.8 78-125 1,3-Dichlorobenzene 1310 20 " 1250 105 82-120 1,3-Dichloropropane 1160 20 " 1250 92.8 61-145 1,4-Dichlorobenzene 1350 20 " 1250 108 84-120 2,2-Dichloropropane 1120 20 " 1250 89.6 68-134 2-Chlorotoluene 1230 20 " 1250 98.4 65-127 4-Chlorotoluene 1290 20 " 1250 103 65-127 Benzene 1220 20 " 1250 97.6 79-118 Bromobenzene 1220 20 " 1250 97.6 69-140 Bromochloromethane 1220 90 " 1250 97.6 61-141 Bromodichloromethane 1240 20 " 1250 99.2 67-137 Bromoform 1140 20 " 1250 91.2 57-152 Bromomethane 1270 150 " 1250 102 51-148 Carbon disulfide 1160 20 " 1250 92.8 61-140 Carbon tetrachloride 1150 20 " 1250 92.0 74-143 Chlorobenzene 1350 20 " 1250 108 67-140 Analyte Units Spike Level Source Result %REC %REC Limits RPD RPD Limit Notes Batch 37F0703 - Volatiles LCS (37F0703-BS1) Prepared & Analyzed: 06/07/17 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 54 of 58 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 09:49 Volatile Organic Compounds - Quality Control Environmental Support Technologies Result Reporting Limit Chloroethane 1250 21 ug/m³ Air 1250 100 60-137 Chloroform 1310 20 " 1250 105 82-140 Chloromethane 1180 20 " 1250 94.4 58-139 cis-1,2-Dichloroethene 1120 20 " 1250 89.6 85-116 cis-1,3-Dichloropropene 1250 20 " 1250 100 66-142 Dibromochloromethane 1150 90 " 1250 92.0 61-140 Dibromomethane 1220 20 " 1250 97.6 66-143 Dichlorodifluoromethane 1280 20 " 1250 102 47-129 Ethylbenzene 1310 20 " 1250 105 70-125 Hexachlorobutadiene 1240 20 " 1250 99.2 71-145 Isopropylbenzene 1200 20 " 1250 96.0 85-116 meta- and para-Xylenes 2450 20 " 2500 98.0 83-115 Methylene Chloride 1310 20 " 1250 105 81-126 Naphthalene 1200 20 " 1250 96.0 56-140 n-Butylbenzene 1300 20 " 1250 104 60-149 n-Propylbenzene 1130 20 " 1250 90.4 77-129 ortho-Xylene 1290 20 " 1250 103 85-115 p-Isopropyltoluene 1250 20 " 1250 100 63-144 sec-Butylbenzene 1210 20 " 1250 96.8 68-128 Styrene 1120 20 " 1250 89.6 65-142 tert-Butylbenzene 1120 20 " 1250 89.6 60-128 Tetrachloroethene 1200 20 " 1250 96.0 60-144 Toluene 1290 20 " 1250 103 70-115 trans-1,2-Dichloroethene 1150 20 " 1250 92.0 72-133 trans-1,3-Dichloropropene 1210 20 " 1250 96.8 68-140 Trichloroethene 1340 20 " 1250 107 68-132 Trichlorofluoromethane 1380 20 " 1250 110 62-144 Vinyl Chloride 1320 20 " 1250 106 66-137 Analyte Units Spike Level Source Result %REC %REC Limits RPD RPD Limit Notes Batch 37F0703 - Volatiles LCS (37F0703-BS1) Prepared & Analyzed: 06/07/17 Surrogate: Dibromofluoromethane 13500 " 12500 108 75-125 Surrogate: Toluene-d8 12000 " 12500 96.0 75-125 Surrogate: 4-Bromofluorobenzene 13000 " 12500 104 75-125 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 55 of 58 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 09:49 Volatile Organic Compounds - Quality Control Environmental Support Technologies Analyte Result Reporting Limit Units Spike Level Source Result %REC %REC Limits RPD RPD Limit Notes Batch 37F0703 - Volatiles Duplicate (37F0703-DUP1) Source: 3F70702-10 Prepared & Analyzed: 06/08/17 1,1,1,2-Tetrachloroethane ND 20 ug/m³ Air ND 50 1,1,1-Trichloroethane ND 20 " ND 50 1,1,2,2-Tetrachloroethane ND 24 " ND 50 1,1,2-Trichloroethane ND 20 " ND 50 1,1,2-Trichloro-trifluoroethane ND 20 " ND 50 1,1-Dichloroethane ND 20 " ND 50 1,1-Dichloroethene ND 20 " ND 50 1,1-Dichloropropene ND 20 " ND 50 1,2,3-Trichlorobenzene ND 20 " ND 50 1,2,3-Trichloropropane ND 20 " ND 50 1,2,4-Trichlorobenzene ND 20 " ND 1,2,4-Trimethylbenzene 400 20 " 430 1,2-Dibromo-3-chloropropane ND 45 " ND 50 1,2-Dibromoethane ND 20 " ND 50 1,2-Dichlorobenzene ND 20 " ND 50 1,2-Dichloroethane ND 20 " ND 50 1,2-Dichloropropane ND 20 " ND 1,3,5-Trimethylbenzene 150 20 " 160 1,3-Dichlorobenzene ND 20 " ND 50 1,3-Dichloropropane ND 20 " ND 50 1,4-Dichlorobenzene ND 20 " ND 50 2,2-Dichloropropane ND 20 " ND 50 2-Chlorotoluene ND 20 " ND 50 4-Chlorotoluene ND 20 " ND 50.0 20 " 50.0 Bromobenzene ND 20 " ND Bromochloromethane ND 90 " ND 40.0 20 " 40.0 Bromoform ND 20 " ND 50 Bromomethane ND 150 " ND 50 Carbon disulfide ND 20 " ND 50 Carbon tetrachloride ND 20 " ND 50 Chlorobenzene ND 20 " ND 50 Benzene Bromodichloromethane 50 7.23 50 50 6.45 50 50 0.00 50 50 50 0.00 50 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 56 of 58 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 09:49 Volatile Organic Compounds - Quality Control Environmental Support Technologies Analyte Result Reporting Limit Units Spike Level Source Result %REC %REC Limits RPD RPD Limit Notes Batch 37F0703 - Volatiles Duplicate (37F0703-DUP1) Source: 3F70702-10 Prepared & Analyzed: 06/08/17 Chloroethane ND 21 ug/m³ Air ND Chloroform 170 20 " 170 50 Chloromethane ND 20 " ND 50 cis-1,2-Dichloroethene ND 20 " ND 50 cis-1,3-Dichloropropene ND 20 " ND 50 Dibromochloromethane ND 90 " ND 50 Dibromomethane ND 20 " ND 50 Dichlorodifluoromethane ND 20 " ND 50 Ethylbenzene 290 20 " 310 Hexachlorobutadiene ND 20 " ND Isopropylbenzene 20.0 20 " 30.0 40.0 50 meta- and para-Xylenes 1260 20 " 1330 5.41 50 Methylene Chloride ND 20 " ND 50 Naphthalene ND 20 " ND 50 n-Butylbenzene ND 20 " ND n-Propylbenzene 70.0 20 " 70.0 0.00 50 ortho-Xylene 420 20 " 450 6.90 50 p-Isopropyltoluene ND 20 " ND 50 sec-Butylbenzene ND 20 " ND 50 Styrene ND 20 " ND 50 tert-Butylbenzene ND 20 " ND 50 Tetrachloroethene ND 20 " ND Toluene 700 20 " 750 trans-1,2-Dichloroethene ND 20 " ND 50 trans-1,3-Dichloropropene ND 20 " ND 50 Trichloroethene ND 20 " ND 50 Trichlorofluoromethane ND 20 " ND 50 Vinyl Chloride ND 20 " ND 50 2-Propanol ND 290 " ND 200 0.00 6.67 50 50 50 50 50 6.90 Surrogate: Dibromofluoromethane 2540 " 2500 102 75-125 Surrogate: Toluene-d8 2420 " 2500 96.7 75-125 Surrogate: 4-Bromofluorobenzene 2540 " 2500 102 75-125 50 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 57 of 58 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 09:49 Notes and Definitions QR-04 The RPD result for this analyte in the sample exceeded the QC control limits; however, the RPD for other analytes were within the QC control limits. J Detected but below the Reporting Limit; therefore, result is an estimated concentration (CLP J-Flag). DET Analyte DETECTED ND Analyte NOT DETECTED at or above the reporting limit NR Not Reported dry Sample results reported on a dry weight basis RPD Relative Percent Difference The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 58 of 58 June 29, 2017 Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 RE: Otay Ranch Village 3 Chula Vista, CA. 91911 Enclosed are the results of analyses for soil gas samples received by Environmental Support Technologies laboratory on 06/08/17 10:21. The analyses were performed according to the prescribed method as outlined by EPA 8260B. A shut in test was performed, leak test was performed, equipment blank was run, and selected purge volume was 3PV. If you have any questions concerning this report, please feel free to contact Project Manager. Sincerely, Ashley Flores Ashley Flores Project Manager Environmental Support Technologies laboratories are certified by the California Department of Health Services (CDHS), Environmental Laboratory Accreditation Program (ELAP) No's. 2772, 2773, and 2767. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann Reported: 29-Jun-17 09:45 ANALYTICAL REPORT FOR SAMPLES Sample ID Laboratory ID Matrix Date Sampled Date Analyzed Equipment Blank 3F70801-01 Air 08-Jun-17 09:15 08-Jun-17 09:34 SGP-01-10 3PV 3F70801-02 Air 08-Jun-17 09:50 08-Jun-17 10:03 SGP-02-5 3PV 3F70801-03 Air 08-Jun-17 10:45 08-Jun-17 10:59 SGP-02-15 3PV 3F70801-04 Air 08-Jun-17 11:10 08-Jun-17 11:28 SGP-02-32 3PV 3F70801-05 Air 08-Jun-17 11:45 08-Jun-17 12:17 SGP-08-5 3PV 3F70801-06 Air 08-Jun-17 12:30 08-Jun-17 12:46 SGP-08-10 3PV 3F70801-07 Air 08-Jun-17 13:00 08-Jun-17 13:14 SGP-09-5 3PV 3F70801-08 Air 08-Jun-17 13:30 08-Jun-17 13:42 SGP-09-10 3PV 3F70801-09 Air 08-Jun-17 14:00 08-Jun-17 14:11 SGP-10-5 3PV 3F70801-10 Air 08-Jun-17 14:25 08-Jun-17 14:39 SGP-10-10 3PV 3F70801-11 Air 08-Jun-17 14:55 08-Jun-17 15:07 SGP-01-10 3PV 3F70802-01 Air 08-Jun-17 16:55 08-Jun-17 17:07 SGP-02-5 3PV 3F70802-02 Air 08-Jun-17 17:50 08-Jun-17 18:03 SGP-02-15 3PV 3F70802-03 Air 08-Jun-17 18:15 08-Jun-17 18:31 SGP-02-32 3PV 3F70802-04 Air 08-Jun-17 19:25 08-Jun-17 19:38 SGP-08-5 3PV 3F70802-05 Air 08-Jun-17 19:50 08-Jun-17 20:06 SGP-08-10 3PV 3F70802-06 Air 08-Jun-17 20:20 08-Jun-17 20:34 SGP-09-5 3PV 3F70802-07 Air 08-Jun-17 20:50 08-Jun-17 21:02 SGP-09-10 3PV 3F70802-08 Air 08-Jun-17 21:15 08-Jun-17 21:30 SGP-10-5 3PV 3F70802-09 Air 08-Jun-17 21:45 08-Jun-17 21:59 SGP-10-10 3PV 3F70802-10 Air 08-Jun-17 22:15 08-Jun-17 22:27 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 1 of 56 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 09:45 Volatile Organic Compounds Environmental Support Technologies Analyte Equipment Blank (3F70801-01) Air 1,1,1,2-Tetrachloroethane 1,1,1-Trichloroethane 1,1,2,2-Tetrachloroethane 1,1,2-Trichloroethane 1,1,2-Trichloro-trifluoroethane 1,1-Dichloroethane 1,1-Dichloroethene 1,1-Dichloropropene 1,2,3-Trichlorobenzene 1,2,3-Trichloropropane 1,2,4-Trichlorobenzene 1,2,4-Trimethylbenzene 1,2-Dibromo-3-chloropropane 1,2-Dibromoethane 1,2-Dichlorobenzene 1,2-Dichloroethane 1,2-Dichloropropane 1,3,5-Trimethylbenzene 1,3-Dichlorobenzene 1,3-Dichloropropane 1,4-Dichlorobenzene 2,2-Dichloropropane 2-Chlorotoluene 4-Chlorotoluene Benzene Bromobenzene Bromochloromethane Bromodichloromethane Bromoform Bromomethane Carbon disulfide Carbon tetrachloride Chlorobenzene Chloroethane Chloroform Chloromethane cis-1,2-Dichloroethene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F0802 06/08/17 06/08/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/08/17 09:15 Analyzed: 06/08/17 09:34 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 20 20 24 20 20 20 20 20 20 20 20 20 45 20 20 20 20 20 20 20 20 20 20 20 20 20 90 20 20 150 20 20 20 21 20 20 20 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 2 of 56 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 09:45 Volatile Organic Compounds Environmental Support Technologies Analyte Equipment Blank (3F70801-01) Air cis-1,3-Dichloropropene Dibromochloromethane Dibromomethane Dichlorodifluoromethane Ethylbenzene Hexachlorobutadiene Isopropylbenzene meta- and para-Xylenes Methylene Chloride Naphthalene n-Butylbenzene n-Propylbenzene ortho-Xylene p-Isopropyltoluene sec-Butylbenzene Styrene tert-Butylbenzene Tetrachloroethene Toluene trans-1,2-Dichloroethene trans-1,3-Dichloropropene Trichloroethene Trichlorofluoromethane Vinyl Chloride 2-Propanol Surrogate: Dibromofluoromethane Surrogate: Toluene-d8 Surrogate: 4-Bromofluorobenzene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F0802 06/08/17 06/08/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/08/17 09:15 Analyzed: 06/08/17 09:34 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 20 90 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 290 106 % 95.1 % 105 % 75-125 75-125 75-125 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 3 of 56 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 09:45 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-01-10 3PV (3F70801-02) Air 1,1,1,2-Tetrachloroethane 1,1,1-Trichloroethane 1,1,2,2-Tetrachloroethane 1,1,2-Trichloroethane 1,1,2-Trichloro-trifluoroethane 1,1-Dichloroethane 1,1-Dichloroethene 1,1-Dichloropropene 1,2,3-Trichlorobenzene 1,2,3-Trichloropropane 1,2,4-Trichlorobenzene 1,2,4-Trimethylbenzene 1,2-Dibromo-3-chloropropane 1,2-Dibromoethane 1,2-Dichlorobenzene 1,2-Dichloroethane 1,2-Dichloropropane 1,3,5-Trimethylbenzene 1,3-Dichlorobenzene 1,3-Dichloropropane 1,4-Dichlorobenzene 2,2-Dichloropropane 2-Chlorotoluene 4-Chlorotoluene Benzene Bromobenzene Bromochloromethane Bromodichloromethane Bromoform Bromomethane Carbon disulfide Carbon tetrachloride Chlorobenzene Chloroethane Chloroform Chloromethane cis-1,2-Dichloroethene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F0802 06/08/17 06/08/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/08/17 09:50 Analyzed: 06/08/17 10:03 ND ND ND ND ND ND ND ND ND ND ND 1400 ND ND ND ND ND 660 ND ND ND ND ND ND 210 ND ND ND ND ND ND ND ND ND 100 ND ND 20 20 24 20 20 20 20 20 20 20 20 20 45 20 20 20 20 20 20 20 20 20 20 20 20 20 90 20 20 150 20 20 20 21 20 20 20 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 4 of 56 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 09:45 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-01-10 3PV (3F70801-02) Air cis-1,3-Dichloropropene Dibromochloromethane Dibromomethane Dichlorodifluoromethane Ethylbenzene Hexachlorobutadiene Isopropylbenzene meta- and para-Xylenes Methylene Chloride Naphthalene n-Butylbenzene n-Propylbenzene ortho-Xylene p-Isopropyltoluene sec-Butylbenzene Styrene tert-Butylbenzene Tetrachloroethene Toluene trans-1,2-Dichloroethene trans-1,3-Dichloropropene Trichloroethene Trichlorofluoromethane Vinyl Chloride 2-Propanol Surrogate: Dibromofluoromethane Surrogate: Toluene-d8 Surrogate: 4-Bromofluorobenzene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F0802 06/08/17 06/08/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/08/17 09:50 Analyzed: 06/08/17 10:03 ND ND ND ND 1200 ND 110 4800 ND ND 20 310 1400 30 ND 30 ND 20 3000 ND ND ND ND ND ND 20 90 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 290 105 % 97.6 % 99.2 % 75-125 75-125 75-125 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 5 of 56 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 09:45 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-02-5 3PV (3F70801-03) Air 1,1,1,2-Tetrachloroethane 1,1,1-Trichloroethane 1,1,2,2-Tetrachloroethane 1,1,2-Trichloroethane 1,1,2-Trichloro-trifluoroethane 1,1-Dichloroethane 1,1-Dichloroethene 1,1-Dichloropropene 1,2,3-Trichlorobenzene 1,2,3-Trichloropropane 1,2,4-Trichlorobenzene 1,2,4-Trimethylbenzene 1,2-Dibromo-3-chloropropane 1,2-Dibromoethane 1,2-Dichlorobenzene 1,2-Dichloroethane 1,2-Dichloropropane 1,3,5-Trimethylbenzene 1,3-Dichlorobenzene 1,3-Dichloropropane 1,4-Dichlorobenzene 2,2-Dichloropropane 2-Chlorotoluene 4-Chlorotoluene Benzene Bromobenzene Bromochloromethane Bromodichloromethane Bromoform Bromomethane Carbon disulfide Carbon tetrachloride Chlorobenzene Chloroethane Chloroform Chloromethane cis-1,2-Dichloroethene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F0802 06/08/17 06/08/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/08/17 10:45 Analyzed: 06/08/17 10:59 ND ND ND ND ND ND ND ND ND ND ND 740 ND ND ND ND ND 200 ND ND ND ND ND ND 10 ND ND ND ND ND ND ND ND ND ND ND ND 20 20 24 20 20 20 20 20 20 20 20 20 45 20 20 20 20 20 20 20 20 20 20 20 20 20 90 20 20 150 20 20 20 21 20 20 20 J The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 6 of 56 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 09:45 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-02-5 3PV (3F70801-03) Air cis-1,3-Dichloropropene Dibromochloromethane Dibromomethane Dichlorodifluoromethane Ethylbenzene Hexachlorobutadiene Isopropylbenzene meta- and para-Xylenes Methylene Chloride Naphthalene n-Butylbenzene n-Propylbenzene ortho-Xylene p-Isopropyltoluene sec-Butylbenzene Styrene tert-Butylbenzene Tetrachloroethene Toluene trans-1,2-Dichloroethene trans-1,3-Dichloropropene Trichloroethene Trichlorofluoromethane Vinyl Chloride 2-Propanol Surrogate: Dibromofluoromethane Surrogate: Toluene-d8 Surrogate: 4-Bromofluorobenzene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F0802 06/08/17 06/08/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/08/17 10:45 Analyzed: 06/08/17 10:59 ND ND ND ND 150 ND 30 700 ND ND 30 100 290 10 ND ND ND ND 170 ND ND ND ND ND ND 20 90 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 290 102 % 95.3 % 102 % 75-125 75-125 75-125 J The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 7 of 56 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 09:45 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-02-15 3PV (3F70801-04) Air 1,1,1,2-Tetrachloroethane 1,1,1-Trichloroethane 1,1,2,2-Tetrachloroethane 1,1,2-Trichloroethane 1,1,2-Trichloro-trifluoroethane 1,1-Dichloroethane 1,1-Dichloroethene 1,1-Dichloropropene 1,2,3-Trichlorobenzene 1,2,3-Trichloropropane 1,2,4-Trichlorobenzene 1,2,4-Trimethylbenzene 1,2-Dibromo-3-chloropropane 1,2-Dibromoethane 1,2-Dichlorobenzene 1,2-Dichloroethane 1,2-Dichloropropane 1,3,5-Trimethylbenzene 1,3-Dichlorobenzene 1,3-Dichloropropane 1,4-Dichlorobenzene 2,2-Dichloropropane 2-Chlorotoluene 4-Chlorotoluene Benzene Bromobenzene Bromochloromethane Bromodichloromethane Bromoform Bromomethane Carbon disulfide Carbon tetrachloride Chlorobenzene Chloroethane Chloroform Chloromethane cis-1,2-Dichloroethene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F0802 06/08/17 06/08/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/08/17 11:10 Analyzed: 06/08/17 11:28 ND ND ND ND ND ND ND ND ND ND ND 410 ND ND ND ND ND 150 ND ND ND ND ND ND 90 ND ND ND ND ND ND ND ND ND ND ND ND 20 20 24 20 20 20 20 20 20 20 20 20 45 20 20 20 20 20 20 20 20 20 20 20 20 20 90 20 20 150 20 20 20 21 20 20 20 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 8 of 56 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 09:45 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-02-15 3PV (3F70801-04) Air cis-1,3-Dichloropropene Dibromochloromethane Dibromomethane Dichlorodifluoromethane Ethylbenzene Hexachlorobutadiene Isopropylbenzene meta- and para-Xylenes Methylene Chloride Naphthalene n-Butylbenzene n-Propylbenzene ortho-Xylene p-Isopropyltoluene sec-Butylbenzene Styrene tert-Butylbenzene Tetrachloroethene Toluene trans-1,2-Dichloroethene trans-1,3-Dichloropropene Trichloroethene Trichlorofluoromethane Vinyl Chloride 2-Propanol Surrogate: Dibromofluoromethane Surrogate: Toluene-d8 Surrogate: 4-Bromofluorobenzene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F0802 06/08/17 06/08/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/08/17 11:10 Analyzed: 06/08/17 11:28 ND ND ND ND 350 ND 40 1200 ND ND ND 90 360 ND ND ND ND ND 980 ND ND ND ND ND ND 20 90 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 290 102 % 96.1 % 103 % 75-125 75-125 75-125 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 9 of 56 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 09:45 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-02-32 3PV (3F70801-05) Air 1,1,1,2-Tetrachloroethane 1,1,1-Trichloroethane 1,1,2,2-Tetrachloroethane 1,1,2-Trichloroethane 1,1,2-Trichloro-trifluoroethane 1,1-Dichloroethane 1,1-Dichloroethene 1,1-Dichloropropene 1,2,3-Trichlorobenzene 1,2,3-Trichloropropane 1,2,4-Trichlorobenzene 1,2,4-Trimethylbenzene 1,2-Dibromo-3-chloropropane 1,2-Dibromoethane 1,2-Dichlorobenzene 1,2-Dichloroethane 1,2-Dichloropropane 1,3,5-Trimethylbenzene 1,3-Dichlorobenzene 1,3-Dichloropropane 1,4-Dichlorobenzene 2,2-Dichloropropane 2-Chlorotoluene 4-Chlorotoluene Benzene Bromobenzene Bromochloromethane Bromodichloromethane Bromoform Bromomethane Carbon disulfide Carbon tetrachloride Chlorobenzene Chloroethane Chloroform Chloromethane cis-1,2-Dichloroethene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F0802 06/08/17 06/08/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/08/17 11:45 Analyzed: 06/08/17 12:17 ND ND ND ND ND ND ND ND ND ND ND 850 ND ND ND ND ND 340 ND ND ND ND ND ND 330 ND ND ND ND ND 60 ND ND ND ND ND ND 20 20 24 20 20 20 20 20 20 20 20 20 45 20 20 20 20 20 20 20 20 20 20 20 20 20 90 20 20 150 20 20 20 21 20 20 20 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 10 of 56 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 09:45 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-02-32 3PV (3F70801-05) Air cis-1,3-Dichloropropene Dibromochloromethane Dibromomethane Dichlorodifluoromethane Ethylbenzene Hexachlorobutadiene Isopropylbenzene meta- and para-Xylenes Methylene Chloride Naphthalene n-Butylbenzene n-Propylbenzene ortho-Xylene p-Isopropyltoluene sec-Butylbenzene Styrene tert-Butylbenzene Tetrachloroethene Toluene trans-1,2-Dichloroethene trans-1,3-Dichloropropene Trichloroethene Trichlorofluoromethane Vinyl Chloride 2-Propanol Surrogate: Dibromofluoromethane Surrogate: Toluene-d8 Surrogate: 4-Bromofluorobenzene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F0802 06/08/17 06/08/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/08/17 11:45 Analyzed: 06/08/17 12:17 ND ND ND ND 770 ND 80 2600 ND ND 30 210 730 20 30 10 ND 10 2300 ND ND ND ND ND ND 20 90 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 290 106 % 97.2 % 102 % 75-125 75-125 75-125 J J The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 11 of 56 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 09:45 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-08-5 3PV (3F70801-06) Air 1,1,1,2-Tetrachloroethane 1,1,1-Trichloroethane 1,1,2,2-Tetrachloroethane 1,1,2-Trichloroethane 1,1,2-Trichloro-trifluoroethane 1,1-Dichloroethane 1,1-Dichloroethene 1,1-Dichloropropene 1,2,3-Trichlorobenzene 1,2,3-Trichloropropane 1,2,4-Trichlorobenzene 1,2,4-Trimethylbenzene 1,2-Dibromo-3-chloropropane 1,2-Dibromoethane 1,2-Dichlorobenzene 1,2-Dichloroethane 1,2-Dichloropropane 1,3,5-Trimethylbenzene 1,3-Dichlorobenzene 1,3-Dichloropropane 1,4-Dichlorobenzene 2,2-Dichloropropane 2-Chlorotoluene 4-Chlorotoluene Benzene Bromobenzene Bromochloromethane Bromodichloromethane Bromoform Bromomethane Carbon disulfide Carbon tetrachloride Chlorobenzene Chloroethane Chloroform Chloromethane cis-1,2-Dichloroethene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F0802 06/08/17 06/08/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/08/17 12:30 Analyzed: 06/08/17 12:46 ND ND ND ND ND ND ND ND ND ND ND 380 ND ND ND ND ND 150 ND ND ND ND ND ND 190 ND ND ND ND ND 40 ND ND ND ND ND ND 20 20 24 20 20 20 20 20 20 20 20 20 45 20 20 20 20 20 20 20 20 20 20 20 20 20 90 20 20 150 20 20 20 21 20 20 20 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 12 of 56 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 09:45 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-08-5 3PV (3F70801-06) Air cis-1,3-Dichloropropene Dibromochloromethane Dibromomethane Dichlorodifluoromethane Ethylbenzene Hexachlorobutadiene Isopropylbenzene meta- and para-Xylenes Methylene Chloride Naphthalene n-Butylbenzene n-Propylbenzene ortho-Xylene p-Isopropyltoluene sec-Butylbenzene Styrene tert-Butylbenzene Tetrachloroethene Toluene trans-1,2-Dichloroethene trans-1,3-Dichloropropene Trichloroethene Trichlorofluoromethane Vinyl Chloride 2-Propanol Surrogate: Dibromofluoromethane Surrogate: Toluene-d8 Surrogate: 4-Bromofluorobenzene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F0802 06/08/17 06/08/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/08/17 12:30 Analyzed: 06/08/17 12:46 ND ND ND ND 460 ND 50 1600 ND ND ND 100 430 ND 10 ND ND ND 1600 ND ND ND ND ND ND 20 90 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 290 103 % 99.3 % 101 % 75-125 75-125 75-125 J The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 13 of 56 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 09:45 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-08-10 3PV (3F70801-07) Air 1,1,1,2-Tetrachloroethane 1,1,1-Trichloroethane 1,1,2,2-Tetrachloroethane 1,1,2-Trichloroethane 1,1,2-Trichloro-trifluoroethane 1,1-Dichloroethane 1,1-Dichloroethene 1,1-Dichloropropene 1,2,3-Trichlorobenzene 1,2,3-Trichloropropane 1,2,4-Trichlorobenzene 1,2,4-Trimethylbenzene 1,2-Dibromo-3-chloropropane 1,2-Dibromoethane 1,2-Dichlorobenzene 1,2-Dichloroethane 1,2-Dichloropropane 1,3,5-Trimethylbenzene 1,3-Dichlorobenzene 1,3-Dichloropropane 1,4-Dichlorobenzene 2,2-Dichloropropane 2-Chlorotoluene 4-Chlorotoluene Benzene Bromobenzene Bromochloromethane Bromodichloromethane Bromoform Bromomethane Carbon disulfide Carbon tetrachloride Chlorobenzene Chloroethane Chloroform Chloromethane cis-1,2-Dichloroethene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F0802 06/08/17 06/08/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/08/17 13:00 Analyzed: 06/08/17 13:14 ND ND ND ND ND ND ND ND ND ND ND 110 ND ND ND ND ND 40 ND ND ND ND ND ND 80 ND ND ND ND ND 120 ND ND ND ND ND ND 20 20 24 20 20 20 20 20 20 20 20 20 45 20 20 20 20 20 20 20 20 20 20 20 20 20 90 20 20 150 20 20 20 21 20 20 20 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 14 of 56 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 09:45 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-08-10 3PV (3F70801-07) Air cis-1,3-Dichloropropene Dibromochloromethane Dibromomethane Dichlorodifluoromethane Ethylbenzene Hexachlorobutadiene Isopropylbenzene meta- and para-Xylenes Methylene Chloride Naphthalene n-Butylbenzene n-Propylbenzene ortho-Xylene p-Isopropyltoluene sec-Butylbenzene Styrene tert-Butylbenzene Tetrachloroethene Toluene trans-1,2-Dichloroethene trans-1,3-Dichloropropene Trichloroethene Trichlorofluoromethane Vinyl Chloride 2-Propanol Surrogate: Dibromofluoromethane Surrogate: Toluene-d8 Surrogate: 4-Bromofluorobenzene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F0802 06/08/17 06/08/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/08/17 13:00 Analyzed: 06/08/17 13:14 ND ND ND ND 110 ND 10 400 ND ND ND 30 110 ND ND ND ND ND 410 ND ND ND ND ND ND 20 90 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 290 101 % 97.0 % 99.7 % 75-125 75-125 75-125 J The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 15 of 56 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 09:45 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-09-5 3PV (3F70801-08) Air 1,1,1,2-Tetrachloroethane 1,1,1-Trichloroethane 1,1,2,2-Tetrachloroethane 1,1,2-Trichloroethane 1,1,2-Trichloro-trifluoroethane 1,1-Dichloroethane 1,1-Dichloroethene 1,1-Dichloropropene 1,2,3-Trichlorobenzene 1,2,3-Trichloropropane 1,2,4-Trichlorobenzene 1,2,4-Trimethylbenzene 1,2-Dibromo-3-chloropropane 1,2-Dibromoethane 1,2-Dichlorobenzene 1,2-Dichloroethane 1,2-Dichloropropane 1,3,5-Trimethylbenzene 1,3-Dichlorobenzene 1,3-Dichloropropane 1,4-Dichlorobenzene 2,2-Dichloropropane 2-Chlorotoluene 4-Chlorotoluene Benzene Bromobenzene Bromochloromethane Bromodichloromethane Bromoform Bromomethane Carbon disulfide Carbon tetrachloride Chlorobenzene Chloroethane Chloroform Chloromethane cis-1,2-Dichloroethene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F0802 06/08/17 06/08/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/08/17 13:30 Analyzed: 06/08/17 13:42 ND ND ND ND ND ND ND ND ND ND ND 370 ND ND ND ND ND 150 ND ND ND ND ND ND 220 ND ND ND ND ND 120 ND ND ND ND ND ND 20 20 24 20 20 20 20 20 20 20 20 20 45 20 20 20 20 20 20 20 20 20 20 20 20 20 90 20 20 150 20 20 20 21 20 20 20 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 16 of 56 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 09:45 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-09-5 3PV (3F70801-08) Air cis-1,3-Dichloropropene Dibromochloromethane Dibromomethane Dichlorodifluoromethane Ethylbenzene Hexachlorobutadiene Isopropylbenzene meta- and para-Xylenes Methylene Chloride Naphthalene n-Butylbenzene n-Propylbenzene ortho-Xylene p-Isopropyltoluene sec-Butylbenzene Styrene tert-Butylbenzene Tetrachloroethene Toluene trans-1,2-Dichloroethene trans-1,3-Dichloropropene Trichloroethene Trichlorofluoromethane Vinyl Chloride 2-Propanol Surrogate: Dibromofluoromethane Surrogate: Toluene-d8 Surrogate: 4-Bromofluorobenzene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F0802 06/08/17 06/08/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/08/17 13:30 Analyzed: 06/08/17 13:42 ND ND ND ND 490 ND 50 1700 ND ND ND 100 460 ND ND ND ND ND 1700 ND ND ND ND ND ND 20 90 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 290 109 % 91.4 % 105 % 75-125 75-125 75-125 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 17 of 56 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 09:45 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-09-10 3PV (3F70801-09) Air 1,1,1,2-Tetrachloroethane 1,1,1-Trichloroethane 1,1,2,2-Tetrachloroethane 1,1,2-Trichloroethane 1,1,2-Trichloro-trifluoroethane 1,1-Dichloroethane 1,1-Dichloroethene 1,1-Dichloropropene 1,2,3-Trichlorobenzene 1,2,3-Trichloropropane 1,2,4-Trichlorobenzene 1,2,4-Trimethylbenzene 1,2-Dibromo-3-chloropropane 1,2-Dibromoethane 1,2-Dichlorobenzene 1,2-Dichloroethane 1,2-Dichloropropane 1,3,5-Trimethylbenzene 1,3-Dichlorobenzene 1,3-Dichloropropane 1,4-Dichlorobenzene 2,2-Dichloropropane 2-Chlorotoluene 4-Chlorotoluene Benzene Bromobenzene Bromochloromethane Bromodichloromethane Bromoform Bromomethane Carbon disulfide Carbon tetrachloride Chlorobenzene Chloroethane Chloroform Chloromethane cis-1,2-Dichloroethene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F0802 06/08/17 06/08/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/08/17 14:00 Analyzed: 06/08/17 14:11 ND ND ND ND ND ND ND ND ND ND ND 280 ND ND ND ND ND 150 ND ND ND ND ND ND 220 ND ND ND ND ND 110 ND ND ND ND ND ND 20 20 24 20 20 20 20 20 20 20 20 20 45 20 20 20 20 20 20 20 20 20 20 20 20 20 90 20 20 150 20 20 20 21 20 20 20 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 18 of 56 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 09:45 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-09-10 3PV (3F70801-09) Air cis-1,3-Dichloropropene Dibromochloromethane Dibromomethane Dichlorodifluoromethane Ethylbenzene Hexachlorobutadiene Isopropylbenzene meta- and para-Xylenes Methylene Chloride Naphthalene n-Butylbenzene n-Propylbenzene ortho-Xylene p-Isopropyltoluene sec-Butylbenzene Styrene tert-Butylbenzene Tetrachloroethene Toluene trans-1,2-Dichloroethene trans-1,3-Dichloropropene Trichloroethene Trichlorofluoromethane Vinyl Chloride 2-Propanol Surrogate: Dibromofluoromethane Surrogate: Toluene-d8 Surrogate: 4-Bromofluorobenzene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F0802 06/08/17 06/08/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/08/17 14:00 Analyzed: 06/08/17 14:11 ND ND ND ND 430 ND 40 1500 ND ND ND 90 420 ND ND ND ND ND 1500 ND ND ND ND ND ND 20 90 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 290 104 % 98.2 % 102 % 75-125 75-125 75-125 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 19 of 56 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 09:45 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-10-5 3PV (3F70801-10) Air 1,1,1,2-Tetrachloroethane 1,1,1-Trichloroethane 1,1,2,2-Tetrachloroethane 1,1,2-Trichloroethane 1,1,2-Trichloro-trifluoroethane 1,1-Dichloroethane 1,1-Dichloroethene 1,1-Dichloropropene 1,2,3-Trichlorobenzene 1,2,3-Trichloropropane 1,2,4-Trichlorobenzene 1,2,4-Trimethylbenzene 1,2-Dibromo-3-chloropropane 1,2-Dibromoethane 1,2-Dichlorobenzene 1,2-Dichloroethane 1,2-Dichloropropane 1,3,5-Trimethylbenzene 1,3-Dichlorobenzene 1,3-Dichloropropane 1,4-Dichlorobenzene 2,2-Dichloropropane 2-Chlorotoluene 4-Chlorotoluene Benzene Bromobenzene Bromochloromethane Bromodichloromethane Bromoform Bromomethane Carbon disulfide Carbon tetrachloride Chlorobenzene Chloroethane Chloroform Chloromethane cis-1,2-Dichloroethene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F0802 06/08/17 06/08/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/08/17 14:25 Analyzed: 06/08/17 14:39 ND ND ND ND ND ND ND ND ND ND ND 210 ND ND ND ND ND 70 ND ND ND ND ND ND 40 ND ND ND ND ND ND ND ND ND 10 ND ND 20 20 24 20 20 20 20 20 20 20 20 20 45 20 20 20 20 20 20 20 20 20 20 20 20 20 90 20 20 150 20 20 20 21 20 20 20 J The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 20 of 56 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 09:45 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-10-5 3PV (3F70801-10) Air cis-1,3-Dichloropropene Dibromochloromethane Dibromomethane Dichlorodifluoromethane Ethylbenzene Hexachlorobutadiene Isopropylbenzene meta- and para-Xylenes Methylene Chloride Naphthalene n-Butylbenzene n-Propylbenzene ortho-Xylene p-Isopropyltoluene sec-Butylbenzene Styrene tert-Butylbenzene Tetrachloroethene Toluene trans-1,2-Dichloroethene trans-1,3-Dichloropropene Trichloroethene Trichlorofluoromethane Vinyl Chloride 2-Propanol Surrogate: Dibromofluoromethane Surrogate: Toluene-d8 Surrogate: 4-Bromofluorobenzene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F0802 06/08/17 06/08/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/08/17 14:25 Analyzed: 06/08/17 14:39 ND ND ND ND 120 ND 10 440 ND ND ND 40 150 ND ND ND ND ND 300 ND ND ND ND ND ND 20 90 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 290 100 % 98.8 % 101 % 75-125 75-125 75-125 J The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 21 of 56 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 09:45 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-10-10 3PV (3F70801-11) Air 1,1,1,2-Tetrachloroethane 1,1,1-Trichloroethane 1,1,2,2-Tetrachloroethane 1,1,2-Trichloroethane 1,1,2-Trichloro-trifluoroethane 1,1-Dichloroethane 1,1-Dichloroethene 1,1-Dichloropropene 1,2,3-Trichlorobenzene 1,2,3-Trichloropropane 1,2,4-Trichlorobenzene 1,2,4-Trimethylbenzene 1,2-Dibromo-3-chloropropane 1,2-Dibromoethane 1,2-Dichlorobenzene 1,2-Dichloroethane 1,2-Dichloropropane 1,3,5-Trimethylbenzene 1,3-Dichlorobenzene 1,3-Dichloropropane 1,4-Dichlorobenzene 2,2-Dichloropropane 2-Chlorotoluene 4-Chlorotoluene Benzene Bromobenzene Bromochloromethane Bromodichloromethane Bromoform Bromomethane Carbon disulfide Carbon tetrachloride Chlorobenzene Chloroethane Chloroform Chloromethane cis-1,2-Dichloroethene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F0802 06/08/17 06/08/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/08/17 14:55 Analyzed: 06/08/17 15:07 ND ND ND ND ND ND ND ND ND ND ND 810 ND ND ND ND ND 300 ND ND ND ND ND ND 60 ND ND ND ND ND ND ND ND ND ND ND ND 20 20 24 20 20 20 20 20 20 20 20 20 45 20 20 20 20 20 20 20 20 20 20 20 20 20 90 20 20 150 20 20 20 21 20 20 20 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 22 of 56 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 09:45 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-10-10 3PV (3F70801-11) Air cis-1,3-Dichloropropene Dibromochloromethane Dibromomethane Dichlorodifluoromethane Ethylbenzene Hexachlorobutadiene Isopropylbenzene meta- and para-Xylenes Methylene Chloride Naphthalene n-Butylbenzene n-Propylbenzene ortho-Xylene p-Isopropyltoluene sec-Butylbenzene Styrene tert-Butylbenzene Tetrachloroethene Toluene trans-1,2-Dichloroethene trans-1,3-Dichloropropene Trichloroethene Trichlorofluoromethane Vinyl Chloride 2-Propanol Surrogate: Dibromofluoromethane Surrogate: Toluene-d8 Surrogate: 4-Bromofluorobenzene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F0802 06/08/17 06/08/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/08/17 14:55 Analyzed: 06/08/17 15:07 ND ND ND ND 310 ND 40 1400 ND ND 20 140 500 20 ND 10 ND ND 580 ND ND ND ND ND ND 20 90 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 290 103 % 95.2 % 100 % 75-125 75-125 75-125 J The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 23 of 56 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 09:45 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-01-10 3PV (3F70802-01) Air 1,1,1,2-Tetrachloroethane 1,1,1-Trichloroethane 1,1,2,2-Tetrachloroethane 1,1,2-Trichloroethane 1,1,2-Trichloro-trifluoroethane 1,1-Dichloroethane 1,1-Dichloroethene 1,1-Dichloropropene 1,2,3-Trichlorobenzene 1,2,3-Trichloropropane 1,2,4-Trichlorobenzene 1,2,4-Trimethylbenzene 1,2-Dibromo-3-chloropropane 1,2-Dibromoethane 1,2-Dichlorobenzene 1,2-Dichloroethane 1,2-Dichloropropane 1,3,5-Trimethylbenzene 1,3-Dichlorobenzene 1,3-Dichloropropane 1,4-Dichlorobenzene 2,2-Dichloropropane 2-Chlorotoluene 4-Chlorotoluene Benzene Bromobenzene Bromochloromethane Bromodichloromethane Bromoform Bromomethane Carbon disulfide Carbon tetrachloride Chlorobenzene Chloroethane Chloroform Chloromethane cis-1,2-Dichloroethene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F0803 06/08/17 06/08/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/08/17 16:55 Analyzed: 06/08/17 17:07 ND ND ND ND ND ND ND ND ND ND ND 1800 ND ND ND ND ND 880 ND ND ND ND ND ND 140 ND ND ND ND ND ND ND ND ND 150 ND ND 20 20 24 20 20 20 20 20 20 20 20 20 45 20 20 20 20 20 20 20 20 20 20 20 20 20 90 20 20 150 20 20 20 21 20 20 20 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 24 of 56 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 09:45 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-01-10 3PV (3F70802-01) Air cis-1,3-Dichloropropene Dibromochloromethane Dibromomethane Dichlorodifluoromethane Ethylbenzene Hexachlorobutadiene Isopropylbenzene meta- and para-Xylenes Methylene Chloride Naphthalene n-Butylbenzene n-Propylbenzene ortho-Xylene p-Isopropyltoluene sec-Butylbenzene Styrene tert-Butylbenzene Tetrachloroethene Toluene trans-1,2-Dichloroethene trans-1,3-Dichloropropene Trichloroethene Trichlorofluoromethane Vinyl Chloride 2-Propanol Surrogate: Dibromofluoromethane Surrogate: Toluene-d8 Surrogate: 4-Bromofluorobenzene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F0803 06/08/17 06/08/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/08/17 16:55 Analyzed: 06/08/17 17:07 ND ND ND ND 1400 ND 140 5500 ND ND 40 410 1700 50 ND 50 ND 20 2900 ND ND ND ND ND ND 20 90 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 290 105 % 97.4 % 101 % 75-125 75-125 75-125 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 25 of 56 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 09:45 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-02-5 3PV (3F70802-02) Air 1,1,1,2-Tetrachloroethane 1,1,1-Trichloroethane 1,1,2,2-Tetrachloroethane 1,1,2-Trichloroethane 1,1,2-Trichloro-trifluoroethane 1,1-Dichloroethane 1,1-Dichloroethene 1,1-Dichloropropene 1,2,3-Trichlorobenzene 1,2,3-Trichloropropane 1,2,4-Trichlorobenzene 1,2,4-Trimethylbenzene 1,2-Dibromo-3-chloropropane 1,2-Dibromoethane 1,2-Dichlorobenzene 1,2-Dichloroethane 1,2-Dichloropropane 1,3,5-Trimethylbenzene 1,3-Dichlorobenzene 1,3-Dichloropropane 1,4-Dichlorobenzene 2,2-Dichloropropane 2-Chlorotoluene 4-Chlorotoluene Benzene Bromobenzene Bromochloromethane Bromodichloromethane Bromoform Bromomethane Carbon disulfide Carbon tetrachloride Chlorobenzene Chloroethane Chloroform Chloromethane cis-1,2-Dichloroethene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F0803 06/08/17 06/08/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/08/17 17:50 Analyzed: 06/08/17 18:03 ND ND ND ND ND ND ND ND ND ND ND 690 ND ND ND ND ND 180 ND ND ND ND ND ND 20 ND ND ND ND ND ND ND ND ND ND ND ND 20 20 24 20 20 20 20 20 20 20 20 20 45 20 20 20 20 20 20 20 20 20 20 20 20 20 90 20 20 150 20 20 20 21 20 20 20 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 26 of 56 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 09:45 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-02-5 3PV (3F70802-02) Air cis-1,3-Dichloropropene Dibromochloromethane Dibromomethane Dichlorodifluoromethane Ethylbenzene Hexachlorobutadiene Isopropylbenzene meta- and para-Xylenes Methylene Chloride Naphthalene n-Butylbenzene n-Propylbenzene ortho-Xylene p-Isopropyltoluene sec-Butylbenzene Styrene tert-Butylbenzene Tetrachloroethene Toluene trans-1,2-Dichloroethene trans-1,3-Dichloropropene Trichloroethene Trichlorofluoromethane Vinyl Chloride 2-Propanol Surrogate: Dibromofluoromethane Surrogate: Toluene-d8 Surrogate: 4-Bromofluorobenzene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F0803 06/08/17 06/08/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/08/17 17:50 Analyzed: 06/08/17 18:03 ND ND ND ND 190 ND 30 830 ND ND 20 90 330 10 ND ND ND ND 290 ND ND ND ND ND ND 20 90 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 290 106 % 96.7 % 97.8 % 75-125 75-125 75-125 J The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 27 of 56 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 09:45 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-02-15 3PV (3F70802-03) Air 1,1,1,2-Tetrachloroethane 1,1,1-Trichloroethane 1,1,2,2-Tetrachloroethane 1,1,2-Trichloroethane 1,1,2-Trichloro-trifluoroethane 1,1-Dichloroethane 1,1-Dichloroethene 1,1-Dichloropropene 1,2,3-Trichlorobenzene 1,2,3-Trichloropropane 1,2,4-Trichlorobenzene 1,2,4-Trimethylbenzene 1,2-Dibromo-3-chloropropane 1,2-Dibromoethane 1,2-Dichlorobenzene 1,2-Dichloroethane 1,2-Dichloropropane 1,3,5-Trimethylbenzene 1,3-Dichlorobenzene 1,3-Dichloropropane 1,4-Dichlorobenzene 2,2-Dichloropropane 2-Chlorotoluene 4-Chlorotoluene Benzene Bromobenzene Bromochloromethane Bromodichloromethane Bromoform Bromomethane Carbon disulfide Carbon tetrachloride Chlorobenzene Chloroethane Chloroform Chloromethane cis-1,2-Dichloroethene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F0803 06/08/17 06/08/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/08/17 18:15 Analyzed: 06/08/17 18:31 ND ND ND ND ND ND ND ND ND ND ND 600 ND ND ND ND ND 190 ND ND ND ND ND ND 30 ND ND ND ND ND ND ND ND ND ND ND ND 20 20 24 20 20 20 20 20 20 20 20 20 45 20 20 20 20 20 20 20 20 20 20 20 20 20 90 20 20 150 20 20 20 21 20 20 20 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 28 of 56 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 09:45 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-02-15 3PV (3F70802-03) Air cis-1,3-Dichloropropene Dibromochloromethane Dibromomethane Dichlorodifluoromethane Ethylbenzene Hexachlorobutadiene Isopropylbenzene meta- and para-Xylenes Methylene Chloride Naphthalene n-Butylbenzene n-Propylbenzene ortho-Xylene p-Isopropyltoluene sec-Butylbenzene Styrene tert-Butylbenzene Tetrachloroethene Toluene trans-1,2-Dichloroethene trans-1,3-Dichloropropene Trichloroethene Trichlorofluoromethane Vinyl Chloride 2-Propanol Surrogate: Dibromofluoromethane Surrogate: Toluene-d8 Surrogate: 4-Bromofluorobenzene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F0803 06/08/17 06/08/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/08/17 18:15 Analyzed: 06/08/17 18:31 ND ND ND ND 270 ND 30 1100 ND ND 20 110 390 20 ND ND ND ND 510 ND ND ND ND ND ND 20 90 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 290 103 % 96.5 % 100 % 75-125 75-125 75-125 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 29 of 56 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 09:45 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-02-32 3PV (3F70802-04) Air 1,1,1,2-Tetrachloroethane 1,1,1-Trichloroethane 1,1,2,2-Tetrachloroethane 1,1,2-Trichloroethane 1,1,2-Trichloro-trifluoroethane 1,1-Dichloroethane 1,1-Dichloroethene 1,1-Dichloropropene 1,2,3-Trichlorobenzene 1,2,3-Trichloropropane 1,2,4-Trichlorobenzene 1,2,4-Trimethylbenzene 1,2-Dibromo-3-chloropropane 1,2-Dibromoethane 1,2-Dichlorobenzene 1,2-Dichloroethane 1,2-Dichloropropane 1,3,5-Trimethylbenzene 1,3-Dichlorobenzene 1,3-Dichloropropane 1,4-Dichlorobenzene 2,2-Dichloropropane 2-Chlorotoluene 4-Chlorotoluene Benzene Bromobenzene Bromochloromethane Bromodichloromethane Bromoform Bromomethane Carbon disulfide Carbon tetrachloride Chlorobenzene Chloroethane Chloroform Chloromethane cis-1,2-Dichloroethene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F0803 06/08/17 06/08/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/08/17 19:25 Analyzed: 06/08/17 19:38 ND ND ND ND ND ND ND ND ND ND ND 1200 ND ND ND ND ND 460 ND ND ND ND ND ND 290 ND ND ND ND ND ND ND ND ND ND ND ND 20 20 24 20 20 20 20 20 20 20 20 20 45 20 20 20 20 20 20 20 20 20 20 20 20 20 90 20 20 150 20 20 20 21 20 20 20 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 30 of 56 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 09:45 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-02-32 3PV (3F70802-04) Air cis-1,3-Dichloropropene Dibromochloromethane Dibromomethane Dichlorodifluoromethane Ethylbenzene Hexachlorobutadiene Isopropylbenzene meta- and para-Xylenes Methylene Chloride Naphthalene n-Butylbenzene n-Propylbenzene ortho-Xylene p-Isopropyltoluene sec-Butylbenzene Styrene tert-Butylbenzene Tetrachloroethene Toluene trans-1,2-Dichloroethene trans-1,3-Dichloropropene Trichloroethene Trichlorofluoromethane Vinyl Chloride 2-Propanol Surrogate: Dibromofluoromethane Surrogate: Toluene-d8 Surrogate: 4-Bromofluorobenzene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F0803 06/08/17 06/08/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/08/17 19:25 Analyzed: 06/08/17 19:38 ND ND ND ND 920 ND 100 3100 ND ND 40 290 880 20 ND 20 ND ND 2600 ND ND 10 ND ND ND 20 90 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 290 104 % 96.2 % 101 % 75-125 75-125 75-125 J The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 31 of 56 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 09:45 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-08-5 3PV (3F70802-05) Air 1,1,1,2-Tetrachloroethane 1,1,1-Trichloroethane 1,1,2,2-Tetrachloroethane 1,1,2-Trichloroethane 1,1,2-Trichloro-trifluoroethane 1,1-Dichloroethane 1,1-Dichloroethene 1,1-Dichloropropene 1,2,3-Trichlorobenzene 1,2,3-Trichloropropane 1,2,4-Trichlorobenzene 1,2,4-Trimethylbenzene 1,2-Dibromo-3-chloropropane 1,2-Dibromoethane 1,2-Dichlorobenzene 1,2-Dichloroethane 1,2-Dichloropropane 1,3,5-Trimethylbenzene 1,3-Dichlorobenzene 1,3-Dichloropropane 1,4-Dichlorobenzene 2,2-Dichloropropane 2-Chlorotoluene 4-Chlorotoluene Benzene Bromobenzene Bromochloromethane Bromodichloromethane Bromoform Bromomethane Carbon disulfide Carbon tetrachloride Chlorobenzene Chloroethane Chloroform Chloromethane cis-1,2-Dichloroethene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F0803 06/08/17 06/08/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/08/17 19:50 Analyzed: 06/08/17 20:06 ND ND ND ND ND ND ND ND ND ND ND 450 ND ND ND ND ND 180 ND ND ND ND ND ND 200 ND ND ND ND ND ND ND ND ND ND ND ND 20 20 24 20 20 20 20 20 20 20 20 20 45 20 20 20 20 20 20 20 20 20 20 20 20 20 90 20 20 150 20 20 20 21 20 20 20 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 32 of 56 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 09:45 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-08-5 3PV (3F70802-05) Air cis-1,3-Dichloropropene Dibromochloromethane Dibromomethane Dichlorodifluoromethane Ethylbenzene Hexachlorobutadiene Isopropylbenzene meta- and para-Xylenes Methylene Chloride Naphthalene n-Butylbenzene n-Propylbenzene ortho-Xylene p-Isopropyltoluene sec-Butylbenzene Styrene tert-Butylbenzene Tetrachloroethene Toluene trans-1,2-Dichloroethene trans-1,3-Dichloropropene Trichloroethene Trichlorofluoromethane Vinyl Chloride 2-Propanol Surrogate: Dibromofluoromethane Surrogate: Toluene-d8 Surrogate: 4-Bromofluorobenzene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F0803 06/08/17 06/08/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/08/17 19:50 Analyzed: 06/08/17 20:06 ND ND ND ND 520 ND 60 1800 ND ND ND 130 500 10 20 ND ND ND 1600 ND ND ND ND ND ND 20 90 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 290 106 % 101 % 102 % 75-125 75-125 75-125 J The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 33 of 56 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 09:45 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-08-10 3PV (3F70802-06) Air 1,1,1,2-Tetrachloroethane 1,1,1-Trichloroethane 1,1,2,2-Tetrachloroethane 1,1,2-Trichloroethane 1,1,2-Trichloro-trifluoroethane 1,1-Dichloroethane 1,1-Dichloroethene 1,1-Dichloropropene 1,2,3-Trichlorobenzene 1,2,3-Trichloropropane 1,2,4-Trichlorobenzene 1,2,4-Trimethylbenzene 1,2-Dibromo-3-chloropropane 1,2-Dibromoethane 1,2-Dichlorobenzene 1,2-Dichloroethane 1,2-Dichloropropane 1,3,5-Trimethylbenzene 1,3-Dichlorobenzene 1,3-Dichloropropane 1,4-Dichlorobenzene 2,2-Dichloropropane 2-Chlorotoluene 4-Chlorotoluene Benzene Bromobenzene Bromochloromethane Bromodichloromethane Bromoform Bromomethane Carbon disulfide Carbon tetrachloride Chlorobenzene Chloroethane Chloroform Chloromethane cis-1,2-Dichloroethene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F0803 06/08/17 06/08/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/08/17 20:20 Analyzed: 06/08/17 20:34 ND ND ND ND ND ND ND ND ND ND ND 140 ND ND ND ND ND 50 ND ND ND ND ND ND 80 ND ND ND ND ND 120 ND ND ND ND ND ND 20 20 24 20 20 20 20 20 20 20 20 20 45 20 20 20 20 20 20 20 20 20 20 20 20 20 90 20 20 150 20 20 20 21 20 20 20 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 34 of 56 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 09:45 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-08-10 3PV (3F70802-06) Air cis-1,3-Dichloropropene Dibromochloromethane Dibromomethane Dichlorodifluoromethane Ethylbenzene Hexachlorobutadiene Isopropylbenzene meta- and para-Xylenes Methylene Chloride Naphthalene n-Butylbenzene n-Propylbenzene ortho-Xylene p-Isopropyltoluene sec-Butylbenzene Styrene tert-Butylbenzene Tetrachloroethene Toluene trans-1,2-Dichloroethene trans-1,3-Dichloropropene Trichloroethene Trichlorofluoromethane Vinyl Chloride 2-Propanol Surrogate: Dibromofluoromethane Surrogate: Toluene-d8 Surrogate: 4-Bromofluorobenzene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F0803 06/08/17 06/08/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/08/17 20:20 Analyzed: 06/08/17 20:34 ND ND ND ND 140 ND 10 500 ND ND ND 30 140 ND ND ND ND ND 490 ND ND ND ND ND ND 20 90 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 290 103 % 99.0 % 99.2 % 75-125 75-125 75-125 J The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 35 of 56 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 09:45 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-09-5 3PV (3F70802-07) Air 1,1,1,2-Tetrachloroethane 1,1,1-Trichloroethane 1,1,2,2-Tetrachloroethane 1,1,2-Trichloroethane 1,1,2-Trichloro-trifluoroethane 1,1-Dichloroethane 1,1-Dichloroethene 1,1-Dichloropropene 1,2,3-Trichlorobenzene 1,2,3-Trichloropropane 1,2,4-Trichlorobenzene 1,2,4-Trimethylbenzene 1,2-Dibromo-3-chloropropane 1,2-Dibromoethane 1,2-Dichlorobenzene 1,2-Dichloroethane 1,2-Dichloropropane 1,3,5-Trimethylbenzene 1,3-Dichlorobenzene 1,3-Dichloropropane 1,4-Dichlorobenzene 2,2-Dichloropropane 2-Chlorotoluene 4-Chlorotoluene Benzene Bromobenzene Bromochloromethane Bromodichloromethane Bromoform Bromomethane Carbon disulfide Carbon tetrachloride Chlorobenzene Chloroethane Chloroform Chloromethane cis-1,2-Dichloroethene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F0803 06/08/17 06/08/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/08/17 20:50 Analyzed: 06/08/17 21:02 ND ND ND ND ND ND ND ND ND ND ND 1200 ND ND ND ND ND 450 ND ND ND ND ND ND 170 ND ND ND ND ND ND ND ND ND ND ND ND 20 20 24 20 20 20 20 20 20 20 20 20 45 20 20 20 20 20 20 20 20 20 20 20 20 20 90 20 20 150 20 20 20 21 20 20 20 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 36 of 56 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 09:45 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-09-5 3PV (3F70802-07) Air cis-1,3-Dichloropropene Dibromochloromethane Dibromomethane Dichlorodifluoromethane Ethylbenzene Hexachlorobutadiene Isopropylbenzene meta- and para-Xylenes Methylene Chloride Naphthalene n-Butylbenzene n-Propylbenzene ortho-Xylene p-Isopropyltoluene sec-Butylbenzene Styrene tert-Butylbenzene Tetrachloroethene Toluene trans-1,2-Dichloroethene trans-1,3-Dichloropropene Trichloroethene Trichlorofluoromethane Vinyl Chloride 2-Propanol Surrogate: Dibromofluoromethane Surrogate: Toluene-d8 Surrogate: 4-Bromofluorobenzene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F0803 06/08/17 06/08/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/08/17 20:50 Analyzed: 06/08/17 21:02 ND ND ND ND 810 ND 90 3100 ND ND 30 260 910 30 30 20 ND ND 1900 ND ND ND ND ND ND 20 90 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 290 108 % 89.8 % 102 % 75-125 75-125 75-125 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 37 of 56 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 09:45 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-09-10 3PV (3F70802-08) Air 1,1,1,2-Tetrachloroethane 1,1,1-Trichloroethane 1,1,2,2-Tetrachloroethane 1,1,2-Trichloroethane 1,1,2-Trichloro-trifluoroethane 1,1-Dichloroethane 1,1-Dichloroethene 1,1-Dichloropropene 1,2,3-Trichlorobenzene 1,2,3-Trichloropropane 1,2,4-Trichlorobenzene 1,2,4-Trimethylbenzene 1,2-Dibromo-3-chloropropane 1,2-Dibromoethane 1,2-Dichlorobenzene 1,2-Dichloroethane 1,2-Dichloropropane 1,3,5-Trimethylbenzene 1,3-Dichlorobenzene 1,3-Dichloropropane 1,4-Dichlorobenzene 2,2-Dichloropropane 2-Chlorotoluene 4-Chlorotoluene Benzene Bromobenzene Bromochloromethane Bromodichloromethane Bromoform Bromomethane Carbon disulfide Carbon tetrachloride Chlorobenzene Chloroethane Chloroform Chloromethane cis-1,2-Dichloroethene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F0803 06/08/17 06/08/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/08/17 21:15 Analyzed: 06/08/17 21:30 ND ND ND ND ND ND ND ND ND ND ND 190 ND ND ND ND ND 70 ND ND ND ND ND ND 40 ND ND ND ND ND ND ND ND ND ND ND ND 20 20 24 20 20 20 20 20 20 20 20 20 45 20 20 20 20 20 20 20 20 20 20 20 20 20 90 20 20 150 20 20 20 21 20 20 20 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 38 of 56 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 09:45 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-09-10 3PV (3F70802-08) Air cis-1,3-Dichloropropene Dibromochloromethane Dibromomethane Dichlorodifluoromethane Ethylbenzene Hexachlorobutadiene Isopropylbenzene meta- and para-Xylenes Methylene Chloride Naphthalene n-Butylbenzene n-Propylbenzene ortho-Xylene p-Isopropyltoluene sec-Butylbenzene Styrene tert-Butylbenzene Tetrachloroethene Toluene trans-1,2-Dichloroethene trans-1,3-Dichloropropene Trichloroethene Trichlorofluoromethane Vinyl Chloride 2-Propanol Surrogate: Dibromofluoromethane Surrogate: Toluene-d8 Surrogate: 4-Bromofluorobenzene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F0803 06/08/17 06/08/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/08/17 21:15 Analyzed: 06/08/17 21:30 ND ND ND ND 150 ND 20 590 ND ND ND 40 180 ND ND ND ND ND 360 ND ND ND ND ND ND 20 90 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 290 102 % 98.6 % 104 % 75-125 75-125 75-125 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 39 of 56 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 09:45 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-10-5 3PV (3F70802-09) Air 1,1,1,2-Tetrachloroethane 1,1,1-Trichloroethane 1,1,2,2-Tetrachloroethane 1,1,2-Trichloroethane 1,1,2-Trichloro-trifluoroethane 1,1-Dichloroethane 1,1-Dichloroethene 1,1-Dichloropropene 1,2,3-Trichlorobenzene 1,2,3-Trichloropropane 1,2,4-Trichlorobenzene 1,2,4-Trimethylbenzene 1,2-Dibromo-3-chloropropane 1,2-Dibromoethane 1,2-Dichlorobenzene 1,2-Dichloroethane 1,2-Dichloropropane 1,3,5-Trimethylbenzene 1,3-Dichlorobenzene 1,3-Dichloropropane 1,4-Dichlorobenzene 2,2-Dichloropropane 2-Chlorotoluene 4-Chlorotoluene Benzene Bromobenzene Bromochloromethane Bromodichloromethane Bromoform Bromomethane Carbon disulfide Carbon tetrachloride Chlorobenzene Chloroethane Chloroform Chloromethane cis-1,2-Dichloroethene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F0803 06/08/17 06/08/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/08/17 21:45 Analyzed: 06/08/17 21:59 ND ND ND ND ND ND ND ND ND ND ND 820 ND ND ND ND ND 290 ND ND ND ND ND ND 50 ND ND ND ND ND ND ND ND ND ND ND ND 20 20 24 20 20 20 20 20 20 20 20 20 45 20 20 20 20 20 20 20 20 20 20 20 20 20 90 20 20 150 20 20 20 21 20 20 20 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 40 of 56 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 09:45 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-10-5 3PV (3F70802-09) Air cis-1,3-Dichloropropene Dibromochloromethane Dibromomethane Dichlorodifluoromethane Ethylbenzene Hexachlorobutadiene Isopropylbenzene meta- and para-Xylenes Methylene Chloride Naphthalene n-Butylbenzene n-Propylbenzene ortho-Xylene p-Isopropyltoluene sec-Butylbenzene Styrene tert-Butylbenzene Tetrachloroethene Toluene trans-1,2-Dichloroethene trans-1,3-Dichloropropene Trichloroethene Trichlorofluoromethane Vinyl Chloride 2-Propanol Surrogate: Dibromofluoromethane Surrogate: Toluene-d8 Surrogate: 4-Bromofluorobenzene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F0803 06/08/17 06/08/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/08/17 21:45 Analyzed: 06/08/17 21:59 ND ND ND ND 270 ND 30 1300 ND ND 20 130 470 30 ND ND ND ND 490 ND ND ND ND ND ND 20 90 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 290 106 % 92.3 % 101 % 75-125 75-125 75-125 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 41 of 56 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 09:45 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-10-10 3PV (3F70802-10) Air 1,1,1,2-Tetrachloroethane 1,1,1-Trichloroethane 1,1,2,2-Tetrachloroethane 1,1,2-Trichloroethane 1,1,2-Trichloro-trifluoroethane 1,1-Dichloroethane 1,1-Dichloroethene 1,1-Dichloropropene 1,2,3-Trichlorobenzene 1,2,3-Trichloropropane 1,2,4-Trichlorobenzene 1,2,4-Trimethylbenzene 1,2-Dibromo-3-chloropropane 1,2-Dibromoethane 1,2-Dichlorobenzene 1,2-Dichloroethane 1,2-Dichloropropane 1,3,5-Trimethylbenzene 1,3-Dichlorobenzene 1,3-Dichloropropane 1,4-Dichlorobenzene 2,2-Dichloropropane 2-Chlorotoluene 4-Chlorotoluene Benzene Bromobenzene Bromochloromethane Bromodichloromethane Bromoform Bromomethane Carbon disulfide Carbon tetrachloride Chlorobenzene Chloroethane Chloroform Chloromethane cis-1,2-Dichloroethene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F0803 06/08/17 06/08/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/08/17 22:15 Analyzed: 06/08/17 22:27 ND ND ND ND ND ND ND ND ND ND ND 610 ND ND ND ND ND 190 ND ND ND ND ND ND 40 ND ND ND ND ND ND ND ND ND ND ND ND 20 20 24 20 20 20 20 20 20 20 20 20 45 20 20 20 20 20 20 20 20 20 20 20 20 20 90 20 20 150 20 20 20 21 20 20 20 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 42 of 56 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 09:45 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-10-10 3PV (3F70802-10) Air cis-1,3-Dichloropropene Dibromochloromethane Dibromomethane Dichlorodifluoromethane Ethylbenzene Hexachlorobutadiene Isopropylbenzene meta- and para-Xylenes Methylene Chloride Naphthalene n-Butylbenzene n-Propylbenzene ortho-Xylene p-Isopropyltoluene sec-Butylbenzene Styrene tert-Butylbenzene Tetrachloroethene Toluene trans-1,2-Dichloroethene trans-1,3-Dichloropropene Trichloroethene Trichlorofluoromethane Vinyl Chloride 2-Propanol Surrogate: Dibromofluoromethane Surrogate: Toluene-d8 Surrogate: 4-Bromofluorobenzene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F0803 06/08/17 06/08/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/08/17 22:15 Analyzed: 06/08/17 22:27 ND ND ND ND 180 ND 20 780 ND ND 20 90 310 20 ND ND ND ND 330 ND ND ND ND ND ND 20 90 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 290 103 % 95.9 % 96.4 % 75-125 75-125 75-125 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 43 of 56 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 09:45 Volatile Organic Compounds - Quality Control Environmental Support Technologies Result Reporting Limit 1,1,1,2-Tetrachloroethane ND 20 ug/m³ Air 1,1,1-Trichloroethane ND 20 " 1,1,2,2-Tetrachloroethane ND 24 " 1,1,2-Trichloroethane ND 20 " 1,1,2-Trichloro-trifluoroethane ND 20 " 1,1-Dichloroethane ND 20 " 1,1-Dichloroethene ND 20 " 1,1-Dichloropropene ND 20 " 1,2,3-Trichlorobenzene ND 20 " 1,2,3-Trichloropropane ND 20 " 1,2,4-Trichlorobenzene ND 20 " 1,2,4-Trimethylbenzene ND 20 " 1,2-Dibromo-3-chloropropane ND 45 " 1,2-Dibromoethane ND 20 " 1,2-Dichlorobenzene ND 20 " 1,2-Dichloroethane ND 20 " 1,2-Dichloropropane ND 20 " 1,3,5-Trimethylbenzene ND 20 " 1,3-Dichlorobenzene ND 20 " 1,3-Dichloropropane ND 20 " 1,4-Dichlorobenzene ND 20 " 2,2-Dichloropropane ND 20 " 2-Chlorotoluene ND 20 " 4-Chlorotoluene ND 20 " Benzene ND 20 " Bromobenzene ND 20 " Bromochloromethane ND 90 " Bromodichloromethane ND 20 " Bromoform ND 20 " Bromomethane ND 150 " Carbon disulfide ND 20 " Carbon tetrachloride ND 20 " Chlorobenzene ND 20 " Analyte Units Spike Level Source Result %REC %REC Limits RPD RPD Limit Notes Batch 37F0802 - Volatiles Blank (37F0802-BLK1) Prepared & Analyzed: 06/08/17 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 44 of 56 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 09:45 Volatile Organic Compounds - Quality Control Environmental Support Technologies Result Reporting Limit Chloroethane ND 21 ug/m³ Air Chloroform ND 20 " Chloromethane ND 20 " cis-1,2-Dichloroethene ND 20 " cis-1,3-Dichloropropene ND 20 " Dibromochloromethane ND 90 " Dibromomethane ND 20 " Dichlorodifluoromethane ND 20 " Ethylbenzene ND 20 " Hexachlorobutadiene ND 20 " Isopropylbenzene ND 20 " meta- and para-Xylenes ND 20 " Methylene Chloride ND 20 " Naphthalene ND 20 " n-Butylbenzene ND 20 " n-Propylbenzene ND 20 " ortho-Xylene ND 20 " p-Isopropyltoluene ND 20 " sec-Butylbenzene ND 20 " Styrene ND 20 " tert-Butylbenzene ND 20 " Tetrachloroethene ND 20 " Toluene ND 20 " trans-1,2-Dichloroethene ND 20 " trans-1,3-Dichloropropene ND 20 " Trichloroethene ND 20 " Trichlorofluoromethane ND 20 " Vinyl Chloride ND 20 " 2-Propanol ND 290 " Analyte Units Spike Level Source Result %REC %REC Limits RPD RPD Limit Notes Batch 37F0802 - Volatiles Blank (37F0802-BLK1) Prepared & Analyzed: 06/08/17 Surrogate: Dibromofluoromethane 2690 " 2500 108 75-125 Surrogate: Toluene-d8 2340 " 2500 93.7 75-125 Surrogate: 4-Bromofluorobenzene 2540 " 2500 102 75-125 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 45 of 56 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 09:45 Volatile Organic Compounds - Quality Control Environmental Support Technologies Result Reporting Limit 1,1,1,2-Tetrachloroethane 1280 20 ug/m³ Air 1250 102 75-136 1,1,1-Trichloroethane 1110 20 " 1250 88.8 73-134 1,1,2,2-Tetrachloroethane 1370 24 " 1250 110 56-149 1,1,2-Trichloroethane 1110 20 " 1250 88.8 67-137 1,1,2-Trichloro-trifluoroethane 1320 20 " 1250 106 83-125 1,1-Dichloroethane 1170 20 " 1250 93.6 80-121 1,1-Dichloroethene 1350 20 " 1250 108 73-137 1,1-Dichloropropene 1240 20 " 1250 99.2 77-122 1,2,3-Trichlorobenzene 1140 20 " 1250 91.2 67-133 1,2,3-Trichloropropane 1300 20 " 1250 104 56-145 1,2,4-Trichlorobenzene 1140 20 " 1250 91.2 71-135 1,2,4-Trimethylbenzene 1110 20 " 1250 88.8 76-140 1,2-Dibromo-3-chloropropane 1290 45 " 1250 103 43-158 1,2-Dibromoethane 1210 20 " 1250 96.8 80-130 1,2-Dichlorobenzene 1150 20 " 1250 92.0 67-139 1,2-Dichloroethane 1190 20 " 1250 95.2 75-131 1,2-Dichloropropane 1130 20 " 1250 90.4 62-144 1,3,5-Trimethylbenzene 1280 20 " 1250 102 78-125 1,3-Dichlorobenzene 1280 20 " 1250 102 82-120 1,3-Dichloropropane 1380 20 " 1250 110 61-145 1,4-Dichlorobenzene 1250 20 " 1250 100 84-120 2,2-Dichloropropane 1110 20 " 1250 88.8 68-134 2-Chlorotoluene 1240 20 " 1250 99.2 65-127 4-Chlorotoluene 1140 20 " 1250 91.2 65-127 Benzene 1260 20 " 1250 101 79-118 Bromobenzene 1320 20 " 1250 106 69-140 Bromochloromethane 1280 90 " 1250 102 61-141 Bromodichloromethane 1110 20 " 1250 88.8 67-137 Bromoform 1160 20 " 1250 92.8 57-152 Bromomethane 1270 150 " 1250 102 51-148 Carbon disulfide 1270 20 " 1250 102 61-140 Carbon tetrachloride 1180 20 " 1250 94.4 74-143 Chlorobenzene 1140 20 " 1250 91.2 67-140 Analyte Units Spike Level Source Result %REC %REC Limits RPD RPD Limit Notes Batch 37F0802 - Volatiles LCS (37F0802-BS1) Prepared & Analyzed: 06/08/17 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 46 of 56 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 09:45 Volatile Organic Compounds - Quality Control Environmental Support Technologies Result Reporting Limit Chloroethane 1290 21 ug/m³ Air 1250 103 60-137 Chloroform 1210 20 " 1250 96.8 82-140 Chloromethane 1390 20 " 1250 111 58-139 cis-1,2-Dichloroethene 1370 20 " 1250 110 85-116 cis-1,3-Dichloropropene 1100 20 " 1250 88.0 66-142 Dibromochloromethane 1360 90 " 1250 109 61-140 Dibromomethane 1150 20 " 1250 92.0 66-143 Dichlorodifluoromethane 1360 20 " 1250 109 47-129 Ethylbenzene 1250 20 " 1250 100 70-125 Hexachlorobutadiene 1250 20 " 1250 100 71-145 Isopropylbenzene 1240 20 " 1250 99.2 85-116 meta- and para-Xylenes 2540 20 " 2500 102 83-115 Methylene Chloride 1160 20 " 1250 92.8 81-126 Naphthalene 1170 20 " 1250 93.6 56-140 n-Butylbenzene 1200 20 " 1250 96.0 60-149 n-Propylbenzene 1270 20 " 1250 102 77-129 ortho-Xylene 1210 20 " 1250 96.8 85-115 p-Isopropyltoluene 1180 20 " 1250 94.4 63-144 sec-Butylbenzene 1350 20 " 1250 108 68-128 Styrene 1260 20 " 1250 101 65-142 tert-Butylbenzene 1260 20 " 1250 101 60-128 Tetrachloroethene 1110 20 " 1250 88.8 60-144 Toluene 1180 20 " 1250 94.4 70-115 trans-1,2-Dichloroethene 1190 20 " 1250 95.2 72-133 trans-1,3-Dichloropropene 1100 20 " 1250 88.0 68-140 Trichloroethene 1290 20 " 1250 103 68-132 Trichlorofluoromethane 1320 20 " 1250 106 62-144 Vinyl Chloride 1280 20 " 1250 102 66-137 Analyte Units Spike Level Source Result %REC %REC Limits RPD RPD Limit Notes Batch 37F0802 - Volatiles LCS (37F0802-BS1) Prepared & Analyzed: 06/08/17 Surrogate: Dibromofluoromethane 13300 " 12500 106 75-125 Surrogate: Toluene-d8 12300 " 12500 98.2 75-125 Surrogate: 4-Bromofluorobenzene 12800 " 12500 103 75-125 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 47 of 56 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 09:45 Volatile Organic Compounds - Quality Control Environmental Support Technologies Analyte Result Reporting Limit Units Spike Level Source Result %REC %REC Limits RPD RPD Limit Notes Batch 37F0802 - Volatiles Duplicate (37F0802-DUP1) Source: 3F70801-02 Prepared & Analyzed: 06/08/17 1,1,1,2-Tetrachloroethane ND 20 ug/m³ Air ND 50 1,1,1-Trichloroethane ND 20 " ND 50 1,1,2,2-Tetrachloroethane ND 24 " ND 50 1,1,2-Trichloroethane ND 20 " ND 50 1,1,2-Trichloro-trifluoroethane ND 20 " ND 50 1,1-Dichloroethane ND 20 " ND 50 1,1-Dichloroethene ND 20 " ND 50 1,1-Dichloropropene ND 20 " ND 50 1,2,3-Trichlorobenzene ND 20 " ND 50 1,2,3-Trichloropropane ND 20 " ND 50 1,2,4-Trichlorobenzene ND 20 " ND 1,2,4-Trimethylbenzene 1400 20 " 1380 1,2-Dibromo-3-chloropropane ND 45 " ND 50 1,2-Dibromoethane ND 20 " ND 50 1,2-Dichlorobenzene ND 20 " ND 50 1,2-Dichloroethane ND 20 " ND 50 1,2-Dichloropropane ND 20 " ND 1,3,5-Trimethylbenzene 690 20 " 660 1,3-Dichlorobenzene ND 20 " ND 50 1,3-Dichloropropane ND 20 " ND 50 1,4-Dichlorobenzene ND 20 " ND 50 2,2-Dichloropropane ND 20 " ND 50 2-Chlorotoluene ND 20 " ND 50 4-Chlorotoluene ND 20 " ND Benzene 220 20 " 210 Bromobenzene ND 20 " ND 50 Bromochloromethane ND 90 " ND 50 Bromodichloromethane ND 20 " ND 50 Bromoform ND 20 " ND 50 Bromomethane ND 150 " ND 50 Carbon disulfide ND 20 " ND 50 Carbon tetrachloride ND 20 " ND 50 Chlorobenzene ND 20 " ND 50 50 1.44 50 50 4.44 50 50 4.65 50 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 48 of 56 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 09:45 Volatile Organic Compounds - Quality Control Environmental Support Technologies Analyte Result Reporting Limit Units Spike Level Source Result %REC %REC Limits RPD RPD Limit Notes Batch 37F0802 - Volatiles Duplicate (37F0802-DUP1) Source: 3F70801-02 Prepared & Analyzed: 06/08/17 Chloroethane ND 21 ug/m³ Air ND Chloroform 110 20 " 100 Chloromethane ND 20 " ND 50 cis-1,2-Dichloroethene ND 20 " ND 50 cis-1,3-Dichloropropene ND 20 " ND 50 Dibromochloromethane ND 90 " ND 50 Dibromomethane ND 20 " ND 50 Dichlorodifluoromethane ND 20 " ND 50 Ethylbenzene 50 9.52 1300 20 " 1230 Hexachlorobutadiene ND 20 " ND Isopropylbenzene 110 20 " 110 0.00 50 5000 20 " 4770 4.71 50 Methylene Chloride ND 20 " ND Naphthalene ND 20 " ND n-Butylbenzene 30.0 20 " 20.0 40.0 50 n-Propylbenzene 310 20 " 310 0.00 50 ortho-Xylene 1470 20 " 1390 5.59 50 p-Isopropyltoluene 30.0 20 " 30.0 0.00 50 sec-Butylbenzene ND 20 " ND 40.0 20 " 30.0 tert-Butylbenzene ND 20 " ND Tetrachloroethene 20.0 20 " 20.0 0.00 50 Toluene 3180 20 " 3030 4.83 50 trans-1,2-Dichloroethene ND 20 " ND 50 trans-1,3-Dichloropropene ND 20 " ND 50 Trichloroethene ND 20 " ND 50 Trichlorofluoromethane ND 20 " ND 50 Vinyl Chloride ND 20 " ND 50 2-Propanol ND 290 " ND 200 meta- and para-Xylenes Styrene 5.53 50 50 50 50 50 50 28.6 50 50 Surrogate: Dibromofluoromethane 2580 " 2500 103 75-125 Surrogate: Toluene-d8 2380 " 2500 95.4 75-125 Surrogate: 4-Bromofluorobenzene 2560 " 2500 102 75-125 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 49 of 56 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 09:45 Volatile Organic Compounds - Quality Control Environmental Support Technologies Result Reporting Limit 1,1,1,2-Tetrachloroethane ND 20 ug/m³ Air 1,1,1-Trichloroethane ND 20 " 1,1,2,2-Tetrachloroethane ND 24 " 1,1,2-Trichloroethane ND 20 " 1,1,2-Trichloro-trifluoroethane ND 20 " 1,1-Dichloroethane ND 20 " 1,1-Dichloroethene ND 20 " 1,1-Dichloropropene ND 20 " 1,2,3-Trichlorobenzene ND 20 " 1,2,3-Trichloropropane ND 20 " 1,2,4-Trichlorobenzene ND 20 " 1,2,4-Trimethylbenzene ND 20 " 1,2-Dibromo-3-chloropropane ND 45 " 1,2-Dibromoethane ND 20 " 1,2-Dichlorobenzene ND 20 " 1,2-Dichloroethane ND 20 " 1,2-Dichloropropane ND 20 " 1,3,5-Trimethylbenzene ND 20 " 1,3-Dichlorobenzene ND 20 " 1,3-Dichloropropane ND 20 " 1,4-Dichlorobenzene ND 20 " 2,2-Dichloropropane ND 20 " 2-Chlorotoluene ND 20 " 4-Chlorotoluene ND 20 " Benzene ND 20 " Bromobenzene ND 20 " Bromochloromethane ND 90 " Bromodichloromethane ND 20 " Bromoform ND 20 " Bromomethane ND 150 " Carbon disulfide ND 20 " Carbon tetrachloride ND 20 " Chlorobenzene ND 20 " Analyte Units Spike Level Source Result %REC %REC Limits RPD RPD Limit Notes Batch 37F0803 - Volatiles Blank (37F0803-BLK1) Prepared & Analyzed: 06/08/17 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 50 of 56 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 09:45 Volatile Organic Compounds - Quality Control Environmental Support Technologies Result Reporting Limit Chloroethane ND 21 ug/m³ Air Chloroform ND 20 " Chloromethane ND 20 " cis-1,2-Dichloroethene ND 20 " cis-1,3-Dichloropropene ND 20 " Dibromochloromethane ND 90 " Dibromomethane ND 20 " Dichlorodifluoromethane ND 20 " Ethylbenzene ND 20 " Hexachlorobutadiene ND 20 " Isopropylbenzene ND 20 " meta- and para-Xylenes ND 20 " Methylene Chloride ND 20 " Naphthalene ND 20 " n-Butylbenzene ND 20 " n-Propylbenzene ND 20 " ortho-Xylene ND 20 " p-Isopropyltoluene ND 20 " sec-Butylbenzene ND 20 " Styrene ND 20 " tert-Butylbenzene ND 20 " Tetrachloroethene ND 20 " Toluene ND 20 " trans-1,2-Dichloroethene ND 20 " trans-1,3-Dichloropropene ND 20 " Trichloroethene ND 20 " Trichlorofluoromethane ND 20 " Vinyl Chloride ND 20 " 2-Propanol ND 290 " Analyte Units Spike Level Source Result %REC %REC Limits RPD RPD Limit Notes Batch 37F0803 - Volatiles Blank (37F0803-BLK1) Prepared & Analyzed: 06/08/17 Surrogate: Dibromofluoromethane 2640 " 2500 106 75-125 Surrogate: Toluene-d8 2400 " 2500 96.2 75-125 Surrogate: 4-Bromofluorobenzene 2580 " 2500 103 75-125 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 51 of 56 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 09:45 Volatile Organic Compounds - Quality Control Environmental Support Technologies Result Reporting Limit 1,1,1,2-Tetrachloroethane 1160 20 ug/m³ Air 1250 92.8 75-136 1,1,1-Trichloroethane 1240 20 " 1250 99.2 73-134 1,1,2,2-Tetrachloroethane 1140 24 " 1250 91.2 56-149 1,1,2-Trichloroethane 1340 20 " 1250 107 67-137 1,1,2-Trichloro-trifluoroethane 1340 20 " 1250 107 83-125 1,1-Dichloroethane 1320 20 " 1250 106 80-121 1,1-Dichloroethene 1360 20 " 1250 109 73-137 1,1-Dichloropropene 1210 20 " 1250 96.8 77-122 1,2,3-Trichlorobenzene 1240 20 " 1250 99.2 67-133 1,2,3-Trichloropropane 1110 20 " 1250 88.8 56-145 1,2,4-Trichlorobenzene 1300 20 " 1250 104 71-135 1,2,4-Trimethylbenzene 1260 20 " 1250 101 76-140 1,2-Dibromo-3-chloropropane 1370 45 " 1250 110 43-158 1,2-Dibromoethane 1290 20 " 1250 103 80-130 1,2-Dichlorobenzene 1260 20 " 1250 101 67-139 1,2-Dichloroethane 1140 20 " 1250 91.2 75-131 1,2-Dichloropropane 1280 20 " 1250 102 62-144 1,3,5-Trimethylbenzene 1140 20 " 1250 91.2 78-125 1,3-Dichlorobenzene 1240 20 " 1250 99.2 82-120 1,3-Dichloropropane 1300 20 " 1250 104 61-145 1,4-Dichlorobenzene 1260 20 " 1250 101 84-120 2,2-Dichloropropane 1130 20 " 1250 90.4 68-134 2-Chlorotoluene 1240 20 " 1250 99.2 65-127 4-Chlorotoluene 1360 20 " 1250 109 65-127 Benzene 1360 20 " 1250 109 79-118 Bromobenzene 1260 20 " 1250 101 69-140 Bromochloromethane 1160 90 " 1250 92.8 61-141 Bromodichloromethane 1210 20 " 1250 96.8 67-137 Bromoform 1240 20 " 1250 99.2 57-152 Bromomethane 1340 150 " 1250 107 51-148 Carbon disulfide 1230 20 " 1250 98.4 61-140 Carbon tetrachloride 1160 20 " 1250 92.8 74-143 Chlorobenzene 1390 20 " 1250 111 67-140 Analyte Units Spike Level Source Result %REC %REC Limits RPD RPD Limit Notes Batch 37F0803 - Volatiles LCS (37F0803-BS1) Prepared & Analyzed: 06/08/17 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 52 of 56 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 09:45 Volatile Organic Compounds - Quality Control Environmental Support Technologies Result Reporting Limit Chloroethane 1250 21 ug/m³ Air 1250 100 60-137 Chloroform 1120 20 " 1250 89.6 82-140 Chloromethane 1220 20 " 1250 97.6 58-139 cis-1,2-Dichloroethene 1270 20 " 1250 102 85-116 cis-1,3-Dichloropropene 1170 20 " 1250 93.6 66-142 Dibromochloromethane 1230 90 " 1250 98.4 61-140 Dibromomethane 1150 20 " 1250 92.0 66-143 Dichlorodifluoromethane 1230 20 " 1250 98.4 47-129 Ethylbenzene 1250 20 " 1250 100 70-125 Hexachlorobutadiene 1130 20 " 1250 90.4 71-145 Isopropylbenzene 1200 20 " 1250 96.0 85-116 meta- and para-Xylenes 2490 20 " 2500 99.6 83-115 Methylene Chloride 1230 20 " 1250 98.4 81-126 Naphthalene 1120 20 " 1250 89.6 56-140 n-Butylbenzene 1330 20 " 1250 106 60-149 n-Propylbenzene 1140 20 " 1250 91.2 77-129 ortho-Xylene 1300 20 " 1250 104 85-115 p-Isopropyltoluene 1160 20 " 1250 92.8 63-144 sec-Butylbenzene 1120 20 " 1250 89.6 68-128 Styrene 1210 20 " 1250 96.8 65-142 tert-Butylbenzene 1400 20 " 1250 112 60-128 Tetrachloroethene 1300 20 " 1250 104 60-144 Toluene 1350 20 " 1250 108 70-115 trans-1,2-Dichloroethene 1250 20 " 1250 100 72-133 trans-1,3-Dichloropropene 1130 20 " 1250 90.4 68-140 Trichloroethene 1180 20 " 1250 94.4 68-132 Trichlorofluoromethane 1280 20 " 1250 102 62-144 Vinyl Chloride 1240 20 " 1250 99.2 66-137 Analyte Units Spike Level Source Result %REC %REC Limits RPD RPD Limit Notes Batch 37F0803 - Volatiles LCS (37F0803-BS1) Prepared & Analyzed: 06/08/17 Surrogate: Dibromofluoromethane 13800 " 12500 110 75-125 Surrogate: Toluene-d8 12000 " 12500 96.1 75-125 Surrogate: 4-Bromofluorobenzene 13300 " 12500 106 75-125 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 53 of 56 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 09:45 Volatile Organic Compounds - Quality Control Environmental Support Technologies Analyte Result Reporting Limit Units Spike Level Source Result %REC %REC Limits RPD RPD Limit Notes Batch 37F0803 - Volatiles Duplicate (37F0803-DUP1) Source: 3F70802-01 Prepared & Analyzed: 06/08/17 1,1,1,2-Tetrachloroethane ND 20 ug/m³ Air ND 50 1,1,1-Trichloroethane ND 20 " ND 50 1,1,2,2-Tetrachloroethane ND 24 " ND 50 1,1,2-Trichloroethane ND 20 " ND 50 1,1,2-Trichloro-trifluoroethane ND 20 " ND 50 1,1-Dichloroethane ND 20 " ND 50 1,1-Dichloroethene ND 20 " ND 50 1,1-Dichloropropene ND 20 " ND 50 1,2,3-Trichlorobenzene ND 20 " ND 50 1,2,3-Trichloropropane ND 20 " ND 50 1,2,4-Trichlorobenzene ND 20 " ND 1,2,4-Trimethylbenzene 1790 20 " 1790 1,2-Dibromo-3-chloropropane ND 45 " ND 50 1,2-Dibromoethane ND 20 " ND 50 1,2-Dichlorobenzene ND 20 " ND 50 1,2-Dichloroethane ND 20 " ND 50 1,2-Dichloropropane ND 20 " ND 1,3,5-Trimethylbenzene 860 20 " 880 1,3-Dichlorobenzene ND 20 " ND 50 1,3-Dichloropropane ND 20 " ND 50 1,4-Dichlorobenzene ND 20 " ND 50 2,2-Dichloropropane ND 20 " ND 50 2-Chlorotoluene ND 20 " ND 50 4-Chlorotoluene ND 20 " ND Benzene 140 20 " 140 Bromobenzene ND 20 " ND 50 Bromochloromethane ND 90 " ND 50 Bromodichloromethane ND 20 " ND 50 Bromoform ND 20 " ND 50 Bromomethane ND 150 " ND 50 Carbon disulfide ND 20 " ND 50 Carbon tetrachloride ND 20 " ND 50 Chlorobenzene ND 20 " ND 50 50 0.00 50 50 2.30 50 50 0.00 50 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 54 of 56 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 09:45 Volatile Organic Compounds - Quality Control Environmental Support Technologies Analyte Result Reporting Limit Units Spike Level Source Result %REC %REC Limits RPD RPD Limit Notes Batch 37F0803 - Volatiles Duplicate (37F0803-DUP1) Source: 3F70802-01 Prepared & Analyzed: 06/08/17 Chloroethane ND 21 ug/m³ Air ND Chloroform 150 20 " 150 Chloromethane ND 20 " ND 50 cis-1,2-Dichloroethene ND 20 " ND 50 cis-1,3-Dichloropropene ND 20 " ND 50 Dibromochloromethane ND 90 " ND 50 Dibromomethane ND 20 " ND 50 Dichlorodifluoromethane ND 20 " ND 50 Ethylbenzene 50 0.00 1380 20 " 1400 Hexachlorobutadiene ND 20 " ND Isopropylbenzene 140 20 " 140 0.00 50 5410 20 " 5500 1.65 50 Methylene Chloride ND 20 " ND Naphthalene ND 20 " ND n-Butylbenzene 30.0 20 " 40.0 28.6 50 n-Propylbenzene 400 20 " 410 2.47 50 ortho-Xylene 1760 20 " 1680 4.65 50 p-Isopropyltoluene 50.0 20 " 50.0 0.00 50 sec-Butylbenzene ND 20 " ND 40.0 20 " 50.0 tert-Butylbenzene ND 20 " ND Tetrachloroethene 10.0 20 " 20.0 66.7 50 Toluene 2750 20 " 2880 4.62 50 trans-1,2-Dichloroethene ND 20 " ND 50 trans-1,3-Dichloropropene ND 20 " ND 50 Trichloroethene ND 20 " ND 50 Trichlorofluoromethane ND 20 " ND 50 Vinyl Chloride ND 20 " ND 50 2-Propanol ND 290 " ND 200 meta- and para-Xylenes Styrene 1.44 50 50 50 50 50 50 22.2 50 50 Surrogate: Dibromofluoromethane 2580 " 2500 103 75-125 Surrogate: Toluene-d8 2440 " 2500 97.6 75-125 Surrogate: 4-Bromofluorobenzene 2490 " 2500 99.5 75-125 QR-04, J The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 55 of 56 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 09:45 Notes and Definitions QR-04 The RPD result for this analyte in the sample exceeded the QC control limits; however, the RPD for other analytes were within the QC control limits. J Detected but below the Reporting Limit; therefore, result is an estimated concentration (CLP J-Flag). DET Analyte DETECTED ND Analyte NOT DETECTED at or above the reporting limit NR Not Reported dry Sample results reported on a dry weight basis RPD Relative Percent Difference The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 56 of 56 Environmental Support Technologies Methane Testing Field Report City of Los Angeles DBS Testing License No.: 10218 Instrument: PGM54 MultiRae IR Calibration Date/Time: 6/6/17, 7:02 PM Site: Otay Ranch Village 3, Chula Vista, Ca 91911 Proj. No.: EST3095 Sampler: DN Date: 6/7/2017 Probe Number SGP-06 Depth (ft. bgs) 5 Time (24 hr) 1010 Pressure (IWC) 0 Methane (% LEL) 100 CO2 (ppmv) 900 O2 (%) 22.2 CO (ppmv) 1272 SGP-07 5 1030 0 14 4830 20.9 35 SGP-05 5 1055 0 100 830 11.4 1271 SGP-05 13 1105 0 100 4570 11.6 1273 SGP-04 5 1145 0 14 2130 8.9 4 SGP-04 13 1155 0 14 1500 10.1 5 SGP-03 5 1240 0 16 930 20.1 53 SGP-03 15 1250 0 27 1260 14.1 152 SGP-03 23 1310 0 13 2160 19.5 18 SGP-01 5 1330 0 17 2310 15.2 35 SGP-06 5 1705 0 100 850 19.1 1250 SGP-07 5 1725 0 69 9500 20.9 26 SGP-05 5 1740 0 100 1890 16.1 1253 SGP-05 13 1755 0 67 5010 13.2 204 SGP-04 5 1810 0 12 2610 9.2 10 SGP-04 13 1825 0 12 1380 10.4 5 SGP-03 5 1835 0 16 1830 7.5 15 SGP-03 15 1850 0 11 1170 11.1 17 SGP-03 23 1910 0 9 1590 19.3 8 SGP-01 5 1925 0 11 1260 17.0 18 Comments Environmental Support Technologies Methane Testing Field Report City of Los Angeles DBS Testing License No.: 10218 Instrument: PGM54 MultiRae IR Calibration Date/Time: 6/6/17, 7:02 PM Site: Otay Ranch Village 3, Chula Vista, Ca 91911 Proj. No.: EST3095 Sampler: DN Date: 6/8/2017 Probe Number SGP-01 Depth (ft. bgs) 10 Time (24 hr) 940 Pressure (IWC) 0 Methane (% LEL) 6 CO2 (ppmv) 1790 O2 (%) 10.8 CO (ppmv) 1 SGP-02 5 1000 0 8 1500 19.8 1 SGP-02 15 1015 0 12 1980 9.1 7 SGP-02 32 1030 0 17 910 7.1 37 SGP-08 5 1040 0 100 400 20.3 1271 SGP-08 10 1100 0 12 510 21.3 2 SGP-09 5 1115 0 100 950 18.1 835 SGP-09 10 1130 0 100 900 16.0 1264 SGP-10 5 1140 0 26 3270 4.6 116 SGP-10 10 1155 0 27 2780 4.4 128 SGP-01 10 1550 0 9 2220 14.6 1 SGP-02 5 1610 0 11 1420 11.5 1 SGP-02 15 1625 0 13 2105 8.8 8 SGP-02 32 1640 0 19 890 6.9 29 SGP-08 5 1655 0 100 410 19.8 1310 SGP-08 10 1710 0 14 490 20.9 1 SGP-09 5 1725 0 100 930 17.9 910 SGP-09 10 1740 0 100 870 15.5 1290 SGP-10 5 1755 0 28 3310 4.3 105 SGP-10 10 1815 0 29 2820 4.6 130 Comments 25712 Commercentre Drive Lake Forest, California 92630 949.297.5020 Phone 949.297.5027 Fax 23 June 2017 Gary Mclue Environmental Management Strategies, Inc. 8 Goodyear, Suite 125 Irvine, CA 92618 RE: Otay Land III Enclosed are the results of analyses for samples received by the laboratory on 06/15/17 16:52. If you have any questions concerning this report, please feel free to contact me. Sincerely, Mike Jaroudi Project Manager Assistant 25712 Commercentre Drive Lake Forest, California 92630 949.297.5020 Phone 949.297.5027 Fax Environmental Management Strategies, Inc. Project: Otay Land III 8 Goodyear, Suite 125 Project Number: EST Irvine CA, 92618 Project Manager: Gary Mclue Reported: 06/23/17 12:21 ANALYTICAL REPORT FOR SAMPLES Sample ID Laboratory ID Matrix Date Sampled Date Received SGP-10-5 T171566-01 Air 06/15/17 09:54 06/15/17 16:52 SGP-09-5 T171566-02 Air 06/15/17 11:32 06/15/17 16:52 SGP-06-5 NP T171566-03 Air 06/15/17 12:27 06/15/17 16:52 SGP-06-5 T171566-04 Air 06/15/17 12:45 06/15/17 16:52 SGP-02-5 NP T171566-05 Air 06/15/17 13:06 06/15/17 16:52 SGP-02-5 T171566-06 Air 06/15/17 13:22 06/15/17 16:52 SGP-02-30 T171566-07 Air 06/15/17 13:58 06/15/17 16:52 SunStar Laboratories, Inc. Mike Jaroudi, Project Manager Assistant The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 1 of 14 25712 Commercentre Drive Lake Forest, California 92630 949.297.5020 Phone 949.297.5027 Fax Environmental Management Strategies, Inc. Project: Otay Land III 8 Goodyear, Suite 125 Project Number: EST Irvine CA, 92618 Project Manager: Gary Mclue Reported: 06/23/17 12:21 DETECTIONS SUMMARY Sample ID: SGP-10-5 T171566-01 Laboratory ID: Reporting Analyte Result Oxygen 24.0 Sample ID: SGP-09-5 Limit 1.00 Units Method % GC Notes T171566-02 Laboratory ID: Reporting Analyte Result Oxygen 22.0 Sample ID: SGP-06-5 NP Limit 1.00 Units Method % GC Notes T171566-03 Laboratory ID: Reporting Analyte Result Methane 690 16 Oxygen 6.87 1.00 Sample ID: SGP-06-5 Limit Units ppm(v) % Method Notes 8015M GC T171566-04 Laboratory ID: Reporting Analyte Result Methane 310 7.6 ppm(v) Oxygen 14.3 1.00 % Sample ID: SGP-02-5 NP Limit Units Method Notes 8015M GC T171566-05 Laboratory ID: Reporting Analyte Methane Result Limit Units 7.6 Carbon Dioxide 1.09 1.00 % GC Oxygen 16.6 1.00 % GC SunStar Laboratories, Inc. Mike Jaroudi, Project Manager Assistant ppm(v) Method 32 Notes 8015M The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 2 of 14 25712 Commercentre Drive Lake Forest, California 92630 949.297.5020 Phone 949.297.5027 Fax Environmental Management Strategies, Inc. Project: Otay Land III 8 Goodyear, Suite 125 Project Number: EST Irvine CA, 92618 Project Manager: Gary Mclue Sample ID: SGP-02-5 Reported: 06/23/17 12:21 T171566-06 Laboratory ID: Reporting Analyte Result Methane 100 9.0 ppm(v) Oxygen 11.4 1.00 % Sample ID: SGP-02-30 Limit Units Method Notes 8015M GC T171566-07 Laboratory ID: Reporting Analyte Methane Oxygen SunStar Laboratories, Inc. Mike Jaroudi, Project Manager Assistant Result Limit Units 26 9.4 ppm(v) 12.1 1.00 % Method Notes 8015M GC The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 3 of 14 25712 Commercentre Drive Lake Forest, California 92630 949.297.5020 Phone 949.297.5027 Fax Environmental Management Strategies, Inc. Project: Otay Land III 8 Goodyear, Suite 125 Project Number: EST Irvine CA, 92618 Project Manager: Gary Mclue Reported: 06/23/17 12:21 SGP-10-5 T171566-01 (Air) Analyte Result Reporting Limit Units Dilution Batch Prepared Analyzed Method 7061940 06/19/17 06/20/17 TO-15 Notes SunStar Laboratories, Inc. TO-15 Isopropyl alcohol ND 5.0 ppb(v) 99.8 % Surrogate: 4-Bromofluorobenzene 1.5 40-160 " " " " Methane by GC Methane ND 7.5 ppm(v) 1.5 7062110 06/21/17 06/22/17 8015M ND 1.00 % 1 7061602 06/16/17 06/16/17 GC 24.0 1.00 " " " " " " Fixed Gases ASTM D1946-90 Carbon Dioxide Oxygen SunStar Laboratories, Inc. Mike Jaroudi, Project Manager Assistant The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 4 of 14 25712 Commercentre Drive Lake Forest, California 92630 949.297.5020 Phone 949.297.5027 Fax Environmental Management Strategies, Inc. Project: Otay Land III 8 Goodyear, Suite 125 Project Number: EST Irvine CA, 92618 Project Manager: Gary Mclue Reported: 06/23/17 12:21 SGP-09-5 T171566-02 (Air) Analyte Result Reporting Limit Units Dilution Batch Prepared Analyzed Method 7061940 06/19/17 06/20/17 TO-15 Notes SunStar Laboratories, Inc. TO-15 Isopropyl alcohol ND 5.0 ppb(v) 100 % Surrogate: 4-Bromofluorobenzene 2.6 40-160 " " " " Methane by GC Methane ND 13 ppm(v) 2.6 7062110 06/21/17 06/22/17 8015M Fixed Gases ASTM D1946-90 Carbon Dioxide Oxygen SunStar Laboratories, Inc. Mike Jaroudi, Project Manager Assistant ND 1.00 % 1 7061602 06/16/17 06/16/17 GC 22.0 1.00 " " " " " " The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 5 of 14 25712 Commercentre Drive Lake Forest, California 92630 949.297.5020 Phone 949.297.5027 Fax Environmental Management Strategies, Inc. Project: Otay Land III 8 Goodyear, Suite 125 Project Number: EST Irvine CA, 92618 Project Manager: Gary Mclue Reported: 06/23/17 12:21 SGP-06-5 NP T171566-03 (Air) Analyte Result Reporting Limit Units Dilution Batch Prepared Analyzed Method 7061940 06/19/17 06/21/17 TO-15 Notes SunStar Laboratories, Inc. TO-15 Isopropyl alcohol ND 5.0 ppb(v) 102 % Surrogate: 4-Bromofluorobenzene 3.25 40-160 " " " " Methane by GC Methane 690 16 ppm(v) 3.25 7062110 06/21/17 06/22/17 8015M Fixed Gases ASTM D1946-90 Carbon Dioxide Oxygen SunStar Laboratories, Inc. Mike Jaroudi, Project Manager Assistant ND 1.00 % 1 7061602 06/16/17 06/16/17 GC 6.87 1.00 " " " " " " The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 6 of 14 25712 Commercentre Drive Lake Forest, California 92630 949.297.5020 Phone 949.297.5027 Fax Environmental Management Strategies, Inc. Project: Otay Land III 8 Goodyear, Suite 125 Project Number: EST Irvine CA, 92618 Project Manager: Gary Mclue Reported: 06/23/17 12:21 SGP-06-5 T171566-04 (Air) Analyte Result Reporting Limit Units Dilution Batch Prepared Analyzed Method 7061940 06/19/17 06/21/17 TO-15 Notes SunStar Laboratories, Inc. TO-15 Isopropyl alcohol ND 5.0 ppb(v) 106 % Surrogate: 4-Bromofluorobenzene 3.04 40-160 " " " " Methane by GC Methane 310 7.6 ppm(v) 1.52 7062110 06/21/17 06/22/17 8015M ND 1.00 % 1 7061602 06/16/17 06/16/17 GC 14.3 1.00 " " " " " " Fixed Gases ASTM D1946-90 Carbon Dioxide Oxygen SunStar Laboratories, Inc. Mike Jaroudi, Project Manager Assistant The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 7 of 14 25712 Commercentre Drive Lake Forest, California 92630 949.297.5020 Phone 949.297.5027 Fax Environmental Management Strategies, Inc. Project: Otay Land III 8 Goodyear, Suite 125 Project Number: EST Irvine CA, 92618 Project Manager: Gary Mclue Reported: 06/23/17 12:21 SGP-02-5 NP T171566-05 (Air) Analyte Result Reporting Limit Units Dilution Batch Prepared Analyzed Method 7061940 06/19/17 06/21/17 TO-15 Notes SunStar Laboratories, Inc. TO-15 Isopropyl alcohol ND 5.0 ppb(v) 100 % Surrogate: 4-Bromofluorobenzene 1.52 40-160 " " " " Methane by GC Methane 32 7.6 ppm(v) 1.52 7062110 06/21/17 06/22/17 8015M 1.09 16.6 1.00 1.00 % " 1 7061602 06/16/17 06/16/17 GC " " " " " Fixed Gases ASTM D1946-90 Carbon Dioxide Oxygen SunStar Laboratories, Inc. Mike Jaroudi, Project Manager Assistant The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 8 of 14 25712 Commercentre Drive Lake Forest, California 92630 949.297.5020 Phone 949.297.5027 Fax Environmental Management Strategies, Inc. Project: Otay Land III 8 Goodyear, Suite 125 Project Number: EST Irvine CA, 92618 Project Manager: Gary Mclue Reported: 06/23/17 12:21 SGP-02-5 T171566-06 (Air) Analyte Result Reporting Limit Units Dilution Batch Prepared Analyzed Method 7061940 06/19/17 06/21/17 TO-15 Notes SunStar Laboratories, Inc. TO-15 Isopropyl alcohol ND 5.0 ppb(v) 101 % Surrogate: 4-Bromofluorobenzene 1.8 40-160 " " " " Methane by GC Methane 100 9.0 ppm(v) 1.8 7062110 06/21/17 06/22/17 8015M Fixed Gases ASTM D1946-90 Carbon Dioxide ND 1.00 % 1 7061602 06/16/17 06/16/17 GC Oxygen 11.4 1.00 " " " " " " SunStar Laboratories, Inc. Mike Jaroudi, Project Manager Assistant The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 9 of 14 25712 Commercentre Drive Lake Forest, California 92630 949.297.5020 Phone 949.297.5027 Fax Environmental Management Strategies, Inc. Project: Otay Land III 8 Goodyear, Suite 125 Project Number: EST Irvine CA, 92618 Project Manager: Gary Mclue Reported: 06/23/17 12:21 SGP-02-30 T171566-07 (Air) Analyte Result Reporting Limit Units Dilution Batch Prepared Analyzed Method 7061940 06/19/17 06/21/17 TO-15 Notes SunStar Laboratories, Inc. TO-15 Isopropyl alcohol ND 5.0 ppb(v) 106 % Surrogate: 4-Bromofluorobenzene 1.88 40-160 " " " " Methane by GC Methane 26 9.4 ppm(v) 1.88 7062110 06/21/17 06/22/17 8015M ND 1.00 % 1 7061602 06/16/17 06/16/17 GC 12.1 1.00 " " " " " " Fixed Gases ASTM D1946-90 Carbon Dioxide Oxygen SunStar Laboratories, Inc. Mike Jaroudi, Project Manager Assistant The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 10 of 14 25712 Commercentre Drive Lake Forest, California 92630 949.297.5020 Phone 949.297.5027 Fax Environmental Management Strategies, Inc. Project: Otay Land III 8 Goodyear, Suite 125 Project Number: EST Irvine CA, 92618 Project Manager: Gary Mclue Reported: 06/23/17 12:21 TO-15 - Quality Control SunStar Laboratories, Inc. Analyte Result Reporting Limit Units ND 5.0 ppb(v) Spike Level Source Result %REC %REC Limits RPD RPD Limit Notes Batch 7061940 - Canister Analysis Prepared: 06/19/17 Analyzed: 06/20/17 Blank (7061940-BLK1) Isopropyl alcohol Surrogate: 4-Bromofluorobenzene 5.87 Duplicate (7061940-DUP1) Isopropyl alcohol Surrogate: 4-Bromofluorobenzene SunStar Laboratories, Inc. Mike Jaroudi, Project Manager Assistant " 6.12 5.0 93.9 40-160 Prepared: 06/19/17 Analyzed: 06/20/17 Source: T171566-01 ND 6.25 ppb(v) " ND 6.25 30 97.9 40-160 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 11 of 14 25712 Commercentre Drive Lake Forest, California 92630 949.297.5020 Phone 949.297.5027 Fax Environmental Management Strategies, Inc. Project: Otay Land III 8 Goodyear, Suite 125 Project Number: EST Irvine CA, 92618 Project Manager: Gary Mclue Reported: 06/23/17 12:21 Methane by GC - Quality Control SunStar Laboratories, Inc. Analyte Result Reporting Limit ND 5.0 Units Spike Level Source Result %REC %REC Limits RPD RPD Limit Notes Batch 7062110 - EPA 5030 GC Prepared: 06/21/17 Analyzed: 06/22/17 Blank (7062110-BLK1) Methane Duplicate (7062110-DUP1) Methane SunStar Laboratories, Inc. Mike Jaroudi, Project Manager Assistant ppm(v) Prepared: 06/21/17 Analyzed: 06/22/17 Source: T171566-01 ND 7.5 ppm(v) ND 20 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 12 of 14 25712 Commercentre Drive Lake Forest, California 92630 949.297.5020 Phone 949.297.5027 Fax Environmental Management Strategies, Inc. Project: Otay Land III 8 Goodyear, Suite 125 Project Number: EST Irvine CA, 92618 Project Manager: Gary Mclue Reported: 06/23/17 12:21 Fixed Gases ASTM D1946-90 - Quality Control SunStar Laboratories, Inc. Result Reporting Limit Carbon Dioxide ND 1.00 % Oxygen ND 1.00 " Analyte Units Spike Level Source Result %REC %REC Limits RPD RPD Limit 5.15 20 Notes Batch 7061602 - EPA 5030 GC Prepared & Analyzed: 06/16/17 Blank (7061602-BLK1) Duplicate (7061602-DUP1) Carbon Dioxide Oxygen SunStar Laboratories, Inc. Mike Jaroudi, Project Manager Assistant Prepared & Analyzed: 06/16/17 Source: T171566-01 ND 1.00 % ND 22.8 1.00 " 24.0 20 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 13 of 14 25712 Commercentre Drive Lake Forest, California 92630 949.297.5020 Phone 949.297.5027 Fax Environmental Management Strategies, Inc. Project: Otay Land III 8 Goodyear, Suite 125 Project Number: EST Irvine CA, 92618 Project Manager: Gary Mclue Reported: 06/23/17 12:21 Notes and Definitions DET Analyte DETECTED ND Analyte NOT DETECTED at or above the reporting limit NR Not Reported dry Sample results reported on a dry weight basis RPD Relative Percent Difference SunStar Laboratories, Inc. Mike Jaroudi, Project Manager Assistant The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 14 of 14 RECORD 1L4, Cowma'i'?l ?Vt/Vi BQVGA em Env1ronmental Support Technologies Irvme, CA 92608- Tel (949) 679 9500- Fax (949) 679-9501 Client: SamplerName: ZlomJ Page: Lof Address: V1u/t?idqa PNQ. Cat-R415: ESTProject#: EST Custody Seals 92m 109%? 47/17/75 __SiteLocation @4125 aloe?um? Cam Project Manager. WM Phone: 5155? "6335?) Email' Turnaround Time?) Sample Receipt (Check one) Intact: 7 YesIce: YesJig?eff? . - a c: Rush: . Custody Seals. YesN/A(Receivedon Site): '3 g? E: Sample Container k# of Sampling Preservative 3, Sample Name Matrix Type Container Date Time Type E. f; (.J ?9 CA - Special Instructio? yavdw "5 Mar i trim Sim 36 mm @5194 OOPS \t 92 l. 904 sets? eta?SM? l2:2:_t C904 +4095 Sepwou?S ms aim l?s ow EMA Sens? V, 2:2. t- t; at new 97:30 .Y mum 92 as 135? x: we ?2 ReIinquished by (Signature) ij [7 Date/Time: 52* Received by:' 7% @1577 DatefTime: $352 Relinquished by: (Signature) Date/T "116 1 Received by: Date/Time: l. su nsta . Laboratories SAMPLE RECEIVING REVIEW SHEET Batch/W ork Order - . . - Ufa/55$ - I I Client Name: I Project: 7 7 - Elm/M 51*an OTAV Ill - - I - - - II - Delivered by:? I Client SunStIar CourierI ID.IGSO - FedEx El Other If'Courier, Received by: Date/ITlme Courler . Rece1ved: -. LaIb. Recelved by Date/Time Lab -. . . - . i - -I I I gm?, - Recelvedg -. - - - *54517 2/ 49:52; Total number'o'f coolers received: .9 I I ?ITemperature Cooler #1 P- the CF (- - corrected temperature ?Temperature Cooler #2 ii the CF (- corrected temperature I Temperature Cooler the CF (- corrected temperature Temperature criteria(no frOzen ?c0ntainers) 1n cntena DYes Samples recelved on 1ce EYES Complete Non-Conformance Sheet If on ice, samples received saIne day 9 - . collected? . - EYES 9 Acceptable Complete Non-conformance Sheet. .Custody- seals? intact Ion cooler/sample 3 i-IDNo?l? Sample contalners intact . .Yes II sample labels match Cha1n of Custody I-IDs .Yes Total number of containers received match COC . IZIY es Proper Containers received for analyses requested on COC . DNo?l?: .-: Proper preserVative indicated on COC/ICOn-tainers for analyses requested 'DNof? - I Complete shipment received in goOd condition With correct temperatures, .- - Containers, labels, volumes preservatives and with-in method specified Yes holding times Complete Non?Conformance Receiving Sheet if checked Cooler/Sample Review {Initials and date: g? . - - 45-17 Comments: .- Page let? 71 . (949) 297?5020 I II 25712 Commercentre Drive I Lake Forest, CA 92630 Printed: 6/16/2017 8:33:37AM WORK ORDER T171566 Client: Project Manager: Environmental Management Strategies, Inc. Project: Otay Land III Project Number: Mike Jaroudi EST Report To: Environmental Management Strategies, Inc. Gary Mclue 8 Goodyear, Suite 125 Irvine, CA 92618 Date Due: 06/23/17 17:00 (5 day TAT) Received By: Sunny Lounethone Date Received: 06/15/17 16:52 Sunny Lounethone Date Logged In: 06/15/17 17:08 Expires Comments Logged In By: Samples Received at: Custody Seals Containers Intact No Yes Received On Ice No COC/Labels Agree Yes Preservation Confirm No Analysis Due TAT T171566-01 SGP-10-5 [Air] Sampled 06/15/17 09:54 (GMT-08:00) Pacific Time (US & 8015m Methane 06/23/17 15:00 5 06/18/17 09:54 Fixed Gases 06/23/17 15:00 5 07/13/17 09:54 Carbon Dioxide and Oxygen only TO-15 06/23/17 15:00 5 07/15/17 09:54 IPA Only T171566-02 SGP-09-5 [Air] Sampled 06/15/17 11:32 (GMT-08:00) Pacific Time (US & 8015m Methane 06/23/17 15:00 5 06/18/17 11:32 Fixed Gases 06/23/17 15:00 5 07/13/17 11:32 Carbon Dioxide and Oxygen only TO-15 06/23/17 15:00 5 07/15/17 11:32 IPA Only T171566-03 SGP-06-5 NP [Air] Sampled 06/15/17 12:27 (GMT-08:00) Pacific Time (US & 8015m Methane 06/23/17 15:00 5 06/18/17 12:27 Fixed Gases 06/23/17 15:00 5 07/13/17 12:27 Carbon Dioxide and Oxygen only TO-15 06/23/17 15:00 5 07/15/17 12:27 IPA Only T171566-04 SGP-06-5 [Air] Sampled 06/15/17 12:45 (GMT-08:00) Pacific Time (US & 8015m Methane 06/23/17 15:00 5 06/18/17 12:45 Fixed Gases 06/23/17 15:00 5 07/13/17 12:45 Carbon Dioxide and Oxygen only TO-15 06/23/17 15:00 5 07/15/17 12:45 IPA Only Page 1 of 2 Printed: 6/16/2017 8:33:37AM WORK ORDER T171566 Client: Project Manager: Environmental Management Strategies, Inc. Project: Otay Land III Analysis Due TAT Project Number: Mike Jaroudi EST Expires Comments T171566-05 SGP-02-5 NP [Air] Sampled 06/15/17 13:06 (GMT-08:00) Pacific Time (US & 8015m Methane 06/23/17 15:00 5 06/18/17 13:06 Fixed Gases 06/23/17 15:00 5 07/13/17 13:06 Carbon Dioxide and Oxygen only TO-15 06/23/17 15:00 5 07/15/17 13:06 IPA Only T171566-06 SGP-02-5 [Air] Sampled 06/15/17 13:22 (GMT-08:00) Pacific Time (US & 8015m Methane 06/23/17 15:00 5 06/18/17 13:22 Fixed Gases 06/23/17 15:00 5 07/13/17 13:22 Carbon Dioxide and Oxygen only TO-15 06/23/17 15:00 5 07/15/17 13:22 IPA Only T171566-07 SGP-02-30 [Air] Sampled 06/15/17 13:58 (GMT-08:00) Pacific Time (US & 8015m Methane 06/23/17 15:00 5 06/18/17 13:58 Fixed Gases 06/23/17 15:00 5 07/13/17 13:58 Carbon Dioxide and Oxygen only TO-15 06/23/17 15:00 5 07/15/17 13:58 IPA Only Reviewed By Date Page 2 of 2 June 29, 2017 Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 RE: Otay Ranch Village 3 Chula Vista, CA. 91911 Enclosed are the results of analyses for soil gas samples received by Environmental Support Technologies laboratory on 06/26/17 16:02. The analyses were performed according to the prescribed method as outlined by EPA 8260B. A shut in test was performed, leak test was performed, equipment blank was run, and selected purge volume was 3PV. If you have any questions concerning this report, please feel free to contact Project Manager. Sincerely, Ashley Flores Ashley Flores Project Manager Environmental Support Technologies laboratories are certified by the California Department of Health Services (CDHS), Environmental Laboratory Accreditation Program (ELAP) No's. 2772, 2773, and 2767. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann Reported: 29-Jun-17 15:23 ANALYTICAL REPORT FOR SAMPLES Sample ID Laboratory ID Matrix Date Sampled Date Analyzed Equipment Blank 3F72601-01 Air 26-Jun-17 08:05 26-Jun-17 08:21 Material Blank 3F72601-02 Air 26-Jun-17 08:35 26-Jun-17 08:49 SGP-760-5 3PV 3F72601-03 Air 26-Jun-17 09:05 26-Jun-17 09:18 SGP-760-20 3PV 3F72601-04 Air 26-Jun-17 10:00 26-Jun-17 10:14 SGP-769-5 3PV 3F72601-05 Air 26-Jun-17 10:30 26-Jun-17 10:43 SGP-769-15 3PV 3F72601-06 Air 26-Jun-17 10:55 26-Jun-17 11:11 SGP-745-5 3PV 3F72601-07 Air 26-Jun-17 11:25 26-Jun-17 11:40 SGP-735-5 3PV 3F72601-08 Air 26-Jun-17 11:55 26-Jun-17 12:08 SGP-735-15 3PV 3F72601-09 Air 26-Jun-17 12:25 26-Jun-17 12:37 SGP-196-5 3PV 3F72601-10 Air 26-Jun-17 13:25 26-Jun-17 13:40 SGP-196-30 3PV 3F72601-11 Air 26-Jun-17 13:55 26-Jun-17 14:09 SGP-202-5 3PV 3F72601-12 Air 26-Jun-17 14:25 26-Jun-17 14:37 SGP-202-25 3PV 3F72601-13 Air 26-Jun-17 14:50 26-Jun-17 15:06 SGP-211-5 3PV 3F72601-14 Air 26-Jun-17 15:30 26-Jun-17 15:47 SGP-211-25 3PV 3F72601-15 Air 26-Jun-17 16:00 26-Jun-17 16:15 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 1 of 39 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 15:23 Volatile Organic Compounds Environmental Support Technologies Analyte Equipment Blank (3F72601-01) Air 1,1,1,2-Tetrachloroethane 1,1,1-Trichloroethane 1,1,2,2-Tetrachloroethane 1,1,2-Trichloroethane 1,1,2-Trichloro-trifluoroethane 1,1-Dichloroethane 1,1-Dichloroethene 1,1-Dichloropropene 1,2,3-Trichlorobenzene 1,2,3-Trichloropropane 1,2,4-Trichlorobenzene 1,2,4-Trimethylbenzene 1,2-Dibromo-3-chloropropane 1,2-Dibromoethane 1,2-Dichlorobenzene 1,2-Dichloroethane 1,2-Dichloropropane 1,3,5-Trimethylbenzene 1,3-Dichlorobenzene 1,3-Dichloropropane 1,4-Dichlorobenzene 2,2-Dichloropropane 2-Chlorotoluene 4-Chlorotoluene Benzene Bromobenzene Bromochloromethane Bromodichloromethane Bromoform Bromomethane Carbon disulfide Carbon tetrachloride Chlorobenzene Chloroethane Chloroform Chloromethane cis-1,2-Dichloroethene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F2602 06/26/17 06/26/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/26/17 08:05 Analyzed: 06/26/17 08:21 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 20 20 24 20 20 20 20 20 20 20 20 20 45 20 20 20 20 20 20 20 20 20 20 20 20 20 90 20 20 150 20 20 20 21 20 20 20 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 2 of 39 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 15:23 Volatile Organic Compounds Environmental Support Technologies Analyte Equipment Blank (3F72601-01) Air cis-1,3-Dichloropropene Dibromochloromethane Dibromomethane Dichlorodifluoromethane Ethylbenzene Hexachlorobutadiene Isopropylbenzene meta- and para-Xylenes Methylene Chloride Naphthalene n-Butylbenzene n-Propylbenzene ortho-Xylene p-Isopropyltoluene sec-Butylbenzene Styrene tert-Butylbenzene Tetrachloroethene Toluene trans-1,2-Dichloroethene trans-1,3-Dichloropropene Trichloroethene Trichlorofluoromethane Vinyl Chloride 2-Propanol Surrogate: Dibromofluoromethane Surrogate: Toluene-d8 Surrogate: 4-Bromofluorobenzene Diisopropyl Ether (DIPE) Ethyl tert-butyl ether (EtBE) Methyl tert-butyl ether (MtBE) tert-Amyl methyl ether (TAME) tert-Butanol (TBA) Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F2602 06/26/17 06/26/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/26/17 08:05 Analyzed: 06/26/17 08:21 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 20 90 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 290 ND ND ND ND ND 106 % 92.2 % 100 % 1000 1000 1000 1000 20000 75-125 75-125 75-125 " 1 " " " " " " " " " " " " " " " " " " " " " " " " " " " " The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 3 of 39 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 15:23 Volatile Organic Compounds Environmental Support Technologies Analyte Material Blank (3F72601-02) Air 1,1,1,2-Tetrachloroethane 1,1,1-Trichloroethane 1,1,2,2-Tetrachloroethane 1,1,2-Trichloroethane 1,1,2-Trichloro-trifluoroethane 1,1-Dichloroethane 1,1-Dichloroethene 1,1-Dichloropropene 1,2,3-Trichlorobenzene 1,2,3-Trichloropropane 1,2,4-Trichlorobenzene 1,2,4-Trimethylbenzene 1,2-Dibromo-3-chloropropane 1,2-Dibromoethane 1,2-Dichlorobenzene 1,2-Dichloroethane 1,2-Dichloropropane 1,3,5-Trimethylbenzene 1,3-Dichlorobenzene 1,3-Dichloropropane 1,4-Dichlorobenzene 2,2-Dichloropropane 2-Chlorotoluene 4-Chlorotoluene Benzene Bromobenzene Bromochloromethane Bromodichloromethane Bromoform Bromomethane Carbon disulfide Carbon tetrachloride Chlorobenzene Chloroethane Chloroform Chloromethane cis-1,2-Dichloroethene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F2602 06/26/17 06/26/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/26/17 08:35 Analyzed: 06/26/17 08:49 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 20 20 24 20 20 20 20 20 20 20 20 20 45 20 20 20 20 20 20 20 20 20 20 20 20 20 90 20 20 150 20 20 20 21 20 20 20 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 4 of 39 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 15:23 Volatile Organic Compounds Environmental Support Technologies Analyte Material Blank (3F72601-02) Air cis-1,3-Dichloropropene Dibromochloromethane Dibromomethane Dichlorodifluoromethane Ethylbenzene Hexachlorobutadiene Isopropylbenzene meta- and para-Xylenes Methylene Chloride Naphthalene n-Butylbenzene n-Propylbenzene ortho-Xylene p-Isopropyltoluene sec-Butylbenzene Styrene tert-Butylbenzene Tetrachloroethene Toluene trans-1,2-Dichloroethene trans-1,3-Dichloropropene Trichloroethene Trichlorofluoromethane Vinyl Chloride 2-Propanol Surrogate: Dibromofluoromethane Surrogate: Toluene-d8 Surrogate: 4-Bromofluorobenzene Diisopropyl Ether (DIPE) Ethyl tert-butyl ether (EtBE) Methyl tert-butyl ether (MtBE) tert-Amyl methyl ether (TAME) tert-Butanol (TBA) Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F2602 06/26/17 06/26/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/26/17 08:35 Analyzed: 06/26/17 08:49 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 20 90 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 290 ND ND ND ND ND 108 % 93.5 % 104 % 1000 1000 1000 1000 20000 75-125 75-125 75-125 " 1 " " " " " " " " " " " " " " " " " " " " " " " " " " " " The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 5 of 39 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 15:23 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-760-5 3PV (3F72601-03) Air 1,1,1,2-Tetrachloroethane 1,1,1-Trichloroethane 1,1,2,2-Tetrachloroethane 1,1,2-Trichloroethane 1,1,2-Trichloro-trifluoroethane 1,1-Dichloroethane 1,1-Dichloroethene 1,1-Dichloropropene 1,2,3-Trichlorobenzene 1,2,3-Trichloropropane 1,2,4-Trichlorobenzene 1,2,4-Trimethylbenzene 1,2-Dibromo-3-chloropropane 1,2-Dibromoethane 1,2-Dichlorobenzene 1,2-Dichloroethane 1,2-Dichloropropane 1,3,5-Trimethylbenzene 1,3-Dichlorobenzene 1,3-Dichloropropane 1,4-Dichlorobenzene 2,2-Dichloropropane 2-Chlorotoluene 4-Chlorotoluene Benzene Bromobenzene Bromochloromethane Bromodichloromethane Bromoform Bromomethane Carbon disulfide Carbon tetrachloride Chlorobenzene Chloroethane Chloroform Chloromethane cis-1,2-Dichloroethene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F2602 06/26/17 06/26/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/26/17 09:05 Analyzed: 06/26/17 09:18 ND ND ND ND ND ND ND ND ND ND ND 60 ND ND ND ND ND 20 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 20 20 24 20 20 20 20 20 20 20 20 20 45 20 20 20 20 20 20 20 20 20 20 20 20 20 90 20 20 150 20 20 20 21 20 20 20 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 6 of 39 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 15:23 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-760-5 3PV (3F72601-03) Air cis-1,3-Dichloropropene Dibromochloromethane Dibromomethane Dichlorodifluoromethane Ethylbenzene Hexachlorobutadiene Isopropylbenzene meta- and para-Xylenes Methylene Chloride Naphthalene n-Butylbenzene n-Propylbenzene ortho-Xylene p-Isopropyltoluene sec-Butylbenzene Styrene tert-Butylbenzene Tetrachloroethene Toluene trans-1,2-Dichloroethene trans-1,3-Dichloropropene Trichloroethene Trichlorofluoromethane Vinyl Chloride 2-Propanol Surrogate: Dibromofluoromethane Surrogate: Toluene-d8 Surrogate: 4-Bromofluorobenzene Diisopropyl Ether (DIPE) Ethyl tert-butyl ether (EtBE) Methyl tert-butyl ether (MtBE) tert-Amyl methyl ether (TAME) tert-Butanol (TBA) Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F2602 06/26/17 06/26/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/26/17 09:05 Analyzed: 06/26/17 09:18 ND ND ND ND 40 ND ND 180 ND ND ND 10 50 ND ND ND ND ND 90 ND ND ND ND ND ND 20 90 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 290 ND ND ND ND ND 104 % 96.1 % 98.1 % 1000 1000 1000 1000 20000 75-125 75-125 75-125 " 1 " " " " " " " " " " " " " " " " " " " " " " " " " " " " J The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 7 of 39 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 15:23 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-760-20 3PV (3F72601-04) Air 1,1,1,2-Tetrachloroethane 1,1,1-Trichloroethane 1,1,2,2-Tetrachloroethane 1,1,2-Trichloroethane 1,1,2-Trichloro-trifluoroethane 1,1-Dichloroethane 1,1-Dichloroethene 1,1-Dichloropropene 1,2,3-Trichlorobenzene 1,2,3-Trichloropropane 1,2,4-Trichlorobenzene 1,2,4-Trimethylbenzene 1,2-Dibromo-3-chloropropane 1,2-Dibromoethane 1,2-Dichlorobenzene 1,2-Dichloroethane 1,2-Dichloropropane 1,3,5-Trimethylbenzene 1,3-Dichlorobenzene 1,3-Dichloropropane 1,4-Dichlorobenzene 2,2-Dichloropropane 2-Chlorotoluene 4-Chlorotoluene Benzene Bromobenzene Bromochloromethane Bromodichloromethane Bromoform Bromomethane Carbon disulfide Carbon tetrachloride Chlorobenzene Chloroethane Chloroform Chloromethane cis-1,2-Dichloroethene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F2602 06/26/17 06/26/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/26/17 10:00 Analyzed: 06/26/17 10:14 ND ND ND ND ND ND ND ND ND ND ND 70 ND ND ND ND ND 30 ND ND ND ND ND ND 20 ND ND ND ND ND ND ND ND ND ND ND ND 20 20 24 20 20 20 20 20 20 20 20 20 45 20 20 20 20 20 20 20 20 20 20 20 20 20 90 20 20 150 20 20 20 21 20 20 20 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 8 of 39 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 15:23 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-760-20 3PV (3F72601-04) Air cis-1,3-Dichloropropene Dibromochloromethane Dibromomethane Dichlorodifluoromethane Ethylbenzene Hexachlorobutadiene Isopropylbenzene meta- and para-Xylenes Methylene Chloride Naphthalene n-Butylbenzene n-Propylbenzene ortho-Xylene p-Isopropyltoluene sec-Butylbenzene Styrene tert-Butylbenzene Tetrachloroethene Toluene trans-1,2-Dichloroethene trans-1,3-Dichloropropene Trichloroethene Trichlorofluoromethane Vinyl Chloride 2-Propanol Surrogate: Dibromofluoromethane Surrogate: Toluene-d8 Surrogate: 4-Bromofluorobenzene Diisopropyl Ether (DIPE) Ethyl tert-butyl ether (EtBE) Methyl tert-butyl ether (MtBE) tert-Amyl methyl ether (TAME) tert-Butanol (TBA) Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F2602 06/26/17 06/26/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/26/17 10:00 Analyzed: 06/26/17 10:14 ND ND ND ND 100 ND ND 380 ND ND ND 20 80 10 ND ND ND ND 300 ND ND ND ND ND ND 20 90 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 290 ND ND ND ND ND 105 % 97.0 % 101 % 1000 1000 1000 1000 20000 75-125 75-125 75-125 " 1 " " " " " " " " " " " " " " " " " " " " " " " " " " " " J The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 9 of 39 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 15:23 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-769-5 3PV (3F72601-05) Air 1,1,1,2-Tetrachloroethane 1,1,1-Trichloroethane 1,1,2,2-Tetrachloroethane 1,1,2-Trichloroethane 1,1,2-Trichloro-trifluoroethane 1,1-Dichloroethane 1,1-Dichloroethene 1,1-Dichloropropene 1,2,3-Trichlorobenzene 1,2,3-Trichloropropane 1,2,4-Trichlorobenzene 1,2,4-Trimethylbenzene 1,2-Dibromo-3-chloropropane 1,2-Dibromoethane 1,2-Dichlorobenzene 1,2-Dichloroethane 1,2-Dichloropropane 1,3,5-Trimethylbenzene 1,3-Dichlorobenzene 1,3-Dichloropropane 1,4-Dichlorobenzene 2,2-Dichloropropane 2-Chlorotoluene 4-Chlorotoluene Benzene Bromobenzene Bromochloromethane Bromodichloromethane Bromoform Bromomethane Carbon disulfide Carbon tetrachloride Chlorobenzene Chloroethane Chloroform Chloromethane cis-1,2-Dichloroethene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F2602 06/26/17 06/26/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/26/17 10:30 Analyzed: 06/26/17 10:43 ND ND ND ND ND ND ND ND ND ND ND 70 ND ND ND ND ND 30 ND ND ND ND ND ND 20 ND ND ND ND ND ND ND ND ND ND ND ND 20 20 24 20 20 20 20 20 20 20 20 20 45 20 20 20 20 20 20 20 20 20 20 20 20 20 90 20 20 150 20 20 20 21 20 20 20 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 10 of 39 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 15:23 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-769-5 3PV (3F72601-05) Air cis-1,3-Dichloropropene Dibromochloromethane Dibromomethane Dichlorodifluoromethane Ethylbenzene Hexachlorobutadiene Isopropylbenzene meta- and para-Xylenes Methylene Chloride Naphthalene n-Butylbenzene n-Propylbenzene ortho-Xylene p-Isopropyltoluene sec-Butylbenzene Styrene tert-Butylbenzene Tetrachloroethene Toluene trans-1,2-Dichloroethene trans-1,3-Dichloropropene Trichloroethene Trichlorofluoromethane Vinyl Chloride 2-Propanol Surrogate: Dibromofluoromethane Surrogate: Toluene-d8 Surrogate: 4-Bromofluorobenzene Diisopropyl Ether (DIPE) Ethyl tert-butyl ether (EtBE) Methyl tert-butyl ether (MtBE) tert-Amyl methyl ether (TAME) tert-Butanol (TBA) Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F2602 06/26/17 06/26/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/26/17 10:30 Analyzed: 06/26/17 10:43 ND ND ND ND 60 ND ND 240 ND ND ND 10 70 10 ND ND ND ND 160 ND ND ND ND ND ND 20 90 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 290 ND ND ND ND ND 103 % 97.3 % 101 % 1000 1000 1000 1000 20000 75-125 75-125 75-125 " 1 " " " " " " " " " " " " " " " " " " " " " " " " " " " " J J The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 11 of 39 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 15:23 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-769-15 3PV (3F72601-06) Air 1,1,1,2-Tetrachloroethane 1,1,1-Trichloroethane 1,1,2,2-Tetrachloroethane 1,1,2-Trichloroethane 1,1,2-Trichloro-trifluoroethane 1,1-Dichloroethane 1,1-Dichloroethene 1,1-Dichloropropene 1,2,3-Trichlorobenzene 1,2,3-Trichloropropane 1,2,4-Trichlorobenzene 1,2,4-Trimethylbenzene 1,2-Dibromo-3-chloropropane 1,2-Dibromoethane 1,2-Dichlorobenzene 1,2-Dichloroethane 1,2-Dichloropropane 1,3,5-Trimethylbenzene 1,3-Dichlorobenzene 1,3-Dichloropropane 1,4-Dichlorobenzene 2,2-Dichloropropane 2-Chlorotoluene 4-Chlorotoluene Benzene Bromobenzene Bromochloromethane Bromodichloromethane Bromoform Bromomethane Carbon disulfide Carbon tetrachloride Chlorobenzene Chloroethane Chloroform Chloromethane cis-1,2-Dichloroethene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F2602 06/26/17 06/26/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/26/17 10:55 Analyzed: 06/26/17 11:11 ND ND ND ND ND ND ND ND ND ND ND 30 ND ND ND ND ND 10 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 20 20 24 20 20 20 20 20 20 20 20 20 45 20 20 20 20 20 20 20 20 20 20 20 20 20 90 20 20 150 20 20 20 21 20 20 20 J The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 12 of 39 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 15:23 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-769-15 3PV (3F72601-06) Air cis-1,3-Dichloropropene Dibromochloromethane Dibromomethane Dichlorodifluoromethane Ethylbenzene Hexachlorobutadiene Isopropylbenzene meta- and para-Xylenes Methylene Chloride Naphthalene n-Butylbenzene n-Propylbenzene ortho-Xylene p-Isopropyltoluene sec-Butylbenzene Styrene tert-Butylbenzene Tetrachloroethene Toluene trans-1,2-Dichloroethene trans-1,3-Dichloropropene Trichloroethene Trichlorofluoromethane Vinyl Chloride 2-Propanol Surrogate: Dibromofluoromethane Surrogate: Toluene-d8 Surrogate: 4-Bromofluorobenzene Diisopropyl Ether (DIPE) Ethyl tert-butyl ether (EtBE) Methyl tert-butyl ether (MtBE) tert-Amyl methyl ether (TAME) tert-Butanol (TBA) Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F2602 06/26/17 06/26/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/26/17 10:55 Analyzed: 06/26/17 11:11 ND ND ND ND 20 ND ND 70 ND ND ND ND 20 ND ND ND ND 10 50 ND ND ND ND ND ND 20 90 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 290 ND ND ND ND ND 108 % 95.6 % 101 % 1000 1000 1000 1000 20000 75-125 75-125 75-125 " 1 " " " " " " " " " " " " " " " " " " " " " " " " " " " " J The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 13 of 39 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 15:23 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-745-5 3PV (3F72601-07) Air 1,1,1,2-Tetrachloroethane 1,1,1-Trichloroethane 1,1,2,2-Tetrachloroethane 1,1,2-Trichloroethane 1,1,2-Trichloro-trifluoroethane 1,1-Dichloroethane 1,1-Dichloroethene 1,1-Dichloropropene 1,2,3-Trichlorobenzene 1,2,3-Trichloropropane 1,2,4-Trichlorobenzene 1,2,4-Trimethylbenzene 1,2-Dibromo-3-chloropropane 1,2-Dibromoethane 1,2-Dichlorobenzene 1,2-Dichloroethane 1,2-Dichloropropane 1,3,5-Trimethylbenzene 1,3-Dichlorobenzene 1,3-Dichloropropane 1,4-Dichlorobenzene 2,2-Dichloropropane 2-Chlorotoluene 4-Chlorotoluene Benzene Bromobenzene Bromochloromethane Bromodichloromethane Bromoform Bromomethane Carbon disulfide Carbon tetrachloride Chlorobenzene Chloroethane Chloroform Chloromethane cis-1,2-Dichloroethene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F2602 06/26/17 06/26/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/26/17 11:25 Analyzed: 06/26/17 11:40 ND ND ND ND ND ND ND ND ND ND ND 220 ND ND ND ND ND 80 ND ND ND ND ND ND 40 ND ND ND ND ND ND ND ND ND ND ND ND 20 20 24 20 20 20 20 20 20 20 20 20 45 20 20 20 20 20 20 20 20 20 20 20 20 20 90 20 20 150 20 20 20 21 20 20 20 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 14 of 39 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 15:23 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-745-5 3PV (3F72601-07) Air cis-1,3-Dichloropropene Dibromochloromethane Dibromomethane Dichlorodifluoromethane Ethylbenzene Hexachlorobutadiene Isopropylbenzene meta- and para-Xylenes Methylene Chloride Naphthalene n-Butylbenzene n-Propylbenzene ortho-Xylene p-Isopropyltoluene sec-Butylbenzene Styrene tert-Butylbenzene Tetrachloroethene Toluene trans-1,2-Dichloroethene trans-1,3-Dichloropropene Trichloroethene Trichlorofluoromethane Vinyl Chloride 2-Propanol Surrogate: Dibromofluoromethane Surrogate: Toluene-d8 Surrogate: 4-Bromofluorobenzene Diisopropyl Ether (DIPE) Ethyl tert-butyl ether (EtBE) Methyl tert-butyl ether (MtBE) tert-Amyl methyl ether (TAME) tert-Butanol (TBA) Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F2602 06/26/17 06/26/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/26/17 11:25 Analyzed: 06/26/17 11:40 ND ND ND ND 190 ND ND 760 ND ND ND 40 460 30 ND ND ND ND 470 ND ND ND ND ND ND 20 90 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 290 ND ND ND ND ND 107 % 95.8 % 99.0 % 1000 1000 1000 1000 20000 75-125 75-125 75-125 " 1 " " " " " " " " " " " " " " " " " " " " " " " " " " " " The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 15 of 39 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 15:23 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-735-5 3PV (3F72601-08) Air 1,1,1,2-Tetrachloroethane 1,1,1-Trichloroethane 1,1,2,2-Tetrachloroethane 1,1,2-Trichloroethane 1,1,2-Trichloro-trifluoroethane 1,1-Dichloroethane 1,1-Dichloroethene 1,1-Dichloropropene 1,2,3-Trichlorobenzene 1,2,3-Trichloropropane 1,2,4-Trichlorobenzene 1,2,4-Trimethylbenzene 1,2-Dibromo-3-chloropropane 1,2-Dibromoethane 1,2-Dichlorobenzene 1,2-Dichloroethane 1,2-Dichloropropane 1,3,5-Trimethylbenzene 1,3-Dichlorobenzene 1,3-Dichloropropane 1,4-Dichlorobenzene 2,2-Dichloropropane 2-Chlorotoluene 4-Chlorotoluene Benzene Bromobenzene Bromochloromethane Bromodichloromethane Bromoform Bromomethane Carbon disulfide Carbon tetrachloride Chlorobenzene Chloroethane Chloroform Chloromethane cis-1,2-Dichloroethene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F2602 06/26/17 06/26/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/26/17 11:55 Analyzed: 06/26/17 12:08 ND ND ND ND ND ND ND ND ND ND ND 10 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 20 20 24 20 20 20 20 20 20 20 20 20 45 20 20 20 20 20 20 20 20 20 20 20 20 20 90 20 20 150 20 20 20 21 20 20 20 J The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 16 of 39 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 15:23 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-735-5 3PV (3F72601-08) Air cis-1,3-Dichloropropene Dibromochloromethane Dibromomethane Dichlorodifluoromethane Ethylbenzene Hexachlorobutadiene Isopropylbenzene meta- and para-Xylenes Methylene Chloride Naphthalene n-Butylbenzene n-Propylbenzene ortho-Xylene p-Isopropyltoluene sec-Butylbenzene Styrene tert-Butylbenzene Tetrachloroethene Toluene trans-1,2-Dichloroethene trans-1,3-Dichloropropene Trichloroethene Trichlorofluoromethane Vinyl Chloride 2-Propanol Surrogate: Dibromofluoromethane Surrogate: Toluene-d8 Surrogate: 4-Bromofluorobenzene Diisopropyl Ether (DIPE) Ethyl tert-butyl ether (EtBE) Methyl tert-butyl ether (MtBE) tert-Amyl methyl ether (TAME) tert-Butanol (TBA) Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F2602 06/26/17 06/26/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/26/17 11:55 Analyzed: 06/26/17 12:08 ND ND ND ND ND ND ND 20 ND ND ND ND ND ND ND ND ND ND 10 ND ND ND ND ND ND 20 90 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 290 ND ND ND ND ND 110 % 96.8 % 100 % 1000 1000 1000 1000 20000 75-125 75-125 75-125 " 1 " " " " " " " " " " " " " " " " " " " " " " " " " " " " J The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 17 of 39 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 15:23 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-735-15 3PV (3F72601-09) Air 1,1,1,2-Tetrachloroethane 1,1,1-Trichloroethane 1,1,2,2-Tetrachloroethane 1,1,2-Trichloroethane 1,1,2-Trichloro-trifluoroethane 1,1-Dichloroethane 1,1-Dichloroethene 1,1-Dichloropropene 1,2,3-Trichlorobenzene 1,2,3-Trichloropropane 1,2,4-Trichlorobenzene 1,2,4-Trimethylbenzene 1,2-Dibromo-3-chloropropane 1,2-Dibromoethane 1,2-Dichlorobenzene 1,2-Dichloroethane 1,2-Dichloropropane 1,3,5-Trimethylbenzene 1,3-Dichlorobenzene 1,3-Dichloropropane 1,4-Dichlorobenzene 2,2-Dichloropropane 2-Chlorotoluene 4-Chlorotoluene Benzene Bromobenzene Bromochloromethane Bromodichloromethane Bromoform Bromomethane Carbon disulfide Carbon tetrachloride Chlorobenzene Chloroethane Chloroform Chloromethane cis-1,2-Dichloroethene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F2602 06/26/17 06/26/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/26/17 12:25 Analyzed: 06/26/17 12:37 ND ND ND ND ND ND ND ND ND ND ND 10 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 20 20 24 20 20 20 20 20 20 20 20 20 45 20 20 20 20 20 20 20 20 20 20 20 20 20 90 20 20 150 20 20 20 21 20 20 20 J The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 18 of 39 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 15:23 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-735-15 3PV (3F72601-09) Air cis-1,3-Dichloropropene Dibromochloromethane Dibromomethane Dichlorodifluoromethane Ethylbenzene Hexachlorobutadiene Isopropylbenzene meta- and para-Xylenes Methylene Chloride Naphthalene n-Butylbenzene n-Propylbenzene ortho-Xylene p-Isopropyltoluene sec-Butylbenzene Styrene tert-Butylbenzene Tetrachloroethene Toluene trans-1,2-Dichloroethene trans-1,3-Dichloropropene Trichloroethene Trichlorofluoromethane Vinyl Chloride 2-Propanol Surrogate: Dibromofluoromethane Surrogate: Toluene-d8 Surrogate: 4-Bromofluorobenzene Diisopropyl Ether (DIPE) Ethyl tert-butyl ether (EtBE) Methyl tert-butyl ether (MtBE) tert-Amyl methyl ether (TAME) tert-Butanol (TBA) Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F2602 06/26/17 06/26/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/26/17 12:25 Analyzed: 06/26/17 12:37 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 10 ND ND ND ND ND ND 20 90 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 290 ND ND ND ND ND 109 % 96.6 % 102 % 1000 1000 1000 1000 20000 75-125 75-125 75-125 " 1 " " " " " " " " " " " " " " " " " " " " " " " " " " " " J The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 19 of 39 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 15:23 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-196-5 3PV (3F72601-10) Air 1,1,1,2-Tetrachloroethane 1,1,1-Trichloroethane 1,1,2,2-Tetrachloroethane 1,1,2-Trichloroethane 1,1,2-Trichloro-trifluoroethane 1,1-Dichloroethane 1,1-Dichloroethene 1,1-Dichloropropene 1,2,3-Trichlorobenzene 1,2,3-Trichloropropane 1,2,4-Trichlorobenzene 1,2,4-Trimethylbenzene 1,2-Dibromo-3-chloropropane 1,2-Dibromoethane 1,2-Dichlorobenzene 1,2-Dichloroethane 1,2-Dichloropropane 1,3,5-Trimethylbenzene 1,3-Dichlorobenzene 1,3-Dichloropropane 1,4-Dichlorobenzene 2,2-Dichloropropane 2-Chlorotoluene 4-Chlorotoluene Benzene Bromobenzene Bromochloromethane Bromodichloromethane Bromoform Bromomethane Carbon disulfide Carbon tetrachloride Chlorobenzene Chloroethane Chloroform Chloromethane cis-1,2-Dichloroethene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F2602 06/26/17 06/26/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/26/17 13:25 Analyzed: 06/26/17 13:40 ND ND ND ND ND ND ND ND ND ND ND 50 ND ND ND ND ND 10 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 20 20 24 20 20 20 20 20 20 20 20 20 45 20 20 20 20 20 20 20 20 20 20 20 20 20 90 20 20 150 20 20 20 21 20 20 20 J The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 20 of 39 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 15:23 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-196-5 3PV (3F72601-10) Air cis-1,3-Dichloropropene Dibromochloromethane Dibromomethane Dichlorodifluoromethane Ethylbenzene Hexachlorobutadiene Isopropylbenzene meta- and para-Xylenes Methylene Chloride Naphthalene n-Butylbenzene n-Propylbenzene ortho-Xylene p-Isopropyltoluene sec-Butylbenzene Styrene tert-Butylbenzene Tetrachloroethene Toluene trans-1,2-Dichloroethene trans-1,3-Dichloropropene Trichloroethene Trichlorofluoromethane Vinyl Chloride 2-Propanol Surrogate: Dibromofluoromethane Surrogate: Toluene-d8 Surrogate: 4-Bromofluorobenzene Diisopropyl Ether (DIPE) Ethyl tert-butyl ether (EtBE) Methyl tert-butyl ether (MtBE) tert-Amyl methyl ether (TAME) tert-Butanol (TBA) Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F2602 06/26/17 06/26/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/26/17 13:25 Analyzed: 06/26/17 13:40 ND ND ND ND 10 ND ND 50 ND ND ND ND 20 10 ND ND ND ND 30 ND ND ND ND ND ND 20 90 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 290 ND ND ND ND ND 111 % 94.9 % 99.0 % 1000 1000 1000 1000 20000 75-125 75-125 75-125 " 1 " " " " " " " " " " " " " " " " " " " " " " " " " " " " J J The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 21 of 39 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 15:23 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-196-30 3PV (3F72601-11) Air 1,1,1,2-Tetrachloroethane 1,1,1-Trichloroethane 1,1,2,2-Tetrachloroethane 1,1,2-Trichloroethane 1,1,2-Trichloro-trifluoroethane 1,1-Dichloroethane 1,1-Dichloroethene 1,1-Dichloropropene 1,2,3-Trichlorobenzene 1,2,3-Trichloropropane 1,2,4-Trichlorobenzene 1,2,4-Trimethylbenzene 1,2-Dibromo-3-chloropropane 1,2-Dibromoethane 1,2-Dichlorobenzene 1,2-Dichloroethane 1,2-Dichloropropane 1,3,5-Trimethylbenzene 1,3-Dichlorobenzene 1,3-Dichloropropane 1,4-Dichlorobenzene 2,2-Dichloropropane 2-Chlorotoluene 4-Chlorotoluene Benzene Bromobenzene Bromochloromethane Bromodichloromethane Bromoform Bromomethane Carbon disulfide Carbon tetrachloride Chlorobenzene Chloroethane Chloroform Chloromethane cis-1,2-Dichloroethene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F2602 06/26/17 06/26/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/26/17 13:55 Analyzed: 06/26/17 14:09 ND ND ND ND ND ND ND ND ND ND ND 140 ND ND ND ND ND 70 ND ND ND ND ND ND 40 ND ND ND ND ND 50 ND ND ND ND ND ND 20 20 24 20 20 20 20 20 20 20 20 20 45 20 20 20 20 20 20 20 20 20 20 20 20 20 90 20 20 150 20 20 20 21 20 20 20 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 22 of 39 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 15:23 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-196-30 3PV (3F72601-11) Air cis-1,3-Dichloropropene Dibromochloromethane Dibromomethane Dichlorodifluoromethane Ethylbenzene Hexachlorobutadiene Isopropylbenzene meta- and para-Xylenes Methylene Chloride Naphthalene n-Butylbenzene n-Propylbenzene ortho-Xylene p-Isopropyltoluene sec-Butylbenzene Styrene tert-Butylbenzene Tetrachloroethene Toluene trans-1,2-Dichloroethene trans-1,3-Dichloropropene Trichloroethene Trichlorofluoromethane Vinyl Chloride 2-Propanol Surrogate: Dibromofluoromethane Surrogate: Toluene-d8 Surrogate: 4-Bromofluorobenzene Diisopropyl Ether (DIPE) Ethyl tert-butyl ether (EtBE) Methyl tert-butyl ether (MtBE) tert-Amyl methyl ether (TAME) tert-Butanol (TBA) Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F2602 06/26/17 06/26/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/26/17 13:55 Analyzed: 06/26/17 14:09 ND ND ND ND 180 ND 10 640 ND ND ND 30 180 20 ND ND ND ND 520 ND ND ND ND ND ND 20 90 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 290 ND ND ND ND ND 111 % 97.5 % 103 % 1000 1000 1000 1000 20000 75-125 75-125 75-125 " 1 " " " " " " " " " " " " " " " " " " " " " " " " " " " " J The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 23 of 39 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 15:23 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-202-5 3PV (3F72601-12) Air 1,1,1,2-Tetrachloroethane 1,1,1-Trichloroethane 1,1,2,2-Tetrachloroethane 1,1,2-Trichloroethane 1,1,2-Trichloro-trifluoroethane 1,1-Dichloroethane 1,1-Dichloroethene 1,1-Dichloropropene 1,2,3-Trichlorobenzene 1,2,3-Trichloropropane 1,2,4-Trichlorobenzene 1,2,4-Trimethylbenzene 1,2-Dibromo-3-chloropropane 1,2-Dibromoethane 1,2-Dichlorobenzene 1,2-Dichloroethane 1,2-Dichloropropane 1,3,5-Trimethylbenzene 1,3-Dichlorobenzene 1,3-Dichloropropane 1,4-Dichlorobenzene 2,2-Dichloropropane 2-Chlorotoluene 4-Chlorotoluene Benzene Bromobenzene Bromochloromethane Bromodichloromethane Bromoform Bromomethane Carbon disulfide Carbon tetrachloride Chlorobenzene Chloroethane Chloroform Chloromethane cis-1,2-Dichloroethene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F2602 06/26/17 06/26/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/26/17 14:25 Analyzed: 06/26/17 14:37 ND ND ND ND ND ND ND ND ND ND ND 70 ND ND ND ND ND 20 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 20 20 24 20 20 20 20 20 20 20 20 20 45 20 20 20 20 20 20 20 20 20 20 20 20 20 90 20 20 150 20 20 20 21 20 20 20 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 24 of 39 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 15:23 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-202-5 3PV (3F72601-12) Air cis-1,3-Dichloropropene Dibromochloromethane Dibromomethane Dichlorodifluoromethane Ethylbenzene Hexachlorobutadiene Isopropylbenzene meta- and para-Xylenes Methylene Chloride Naphthalene n-Butylbenzene n-Propylbenzene ortho-Xylene p-Isopropyltoluene sec-Butylbenzene Styrene tert-Butylbenzene Tetrachloroethene Toluene trans-1,2-Dichloroethene trans-1,3-Dichloropropene Trichloroethene Trichlorofluoromethane Vinyl Chloride 2-Propanol Surrogate: Dibromofluoromethane Surrogate: Toluene-d8 Surrogate: 4-Bromofluorobenzene Diisopropyl Ether (DIPE) Ethyl tert-butyl ether (EtBE) Methyl tert-butyl ether (MtBE) tert-Amyl methyl ether (TAME) tert-Butanol (TBA) Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F2602 06/26/17 06/26/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/26/17 14:25 Analyzed: 06/26/17 14:37 ND ND ND ND 30 ND ND 120 ND ND ND ND 40 ND ND ND ND ND 60 ND ND ND ND ND ND 20 90 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 290 ND ND ND ND ND 110 % 95.8 % 104 % 1000 1000 1000 1000 20000 75-125 75-125 75-125 " 1 " " " " " " " " " " " " " " " " " " " " " " " " " " " " The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 25 of 39 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 15:23 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-202-25 3PV (3F72601-13) Air 1,1,1,2-Tetrachloroethane 1,1,1-Trichloroethane 1,1,2,2-Tetrachloroethane 1,1,2-Trichloroethane 1,1,2-Trichloro-trifluoroethane 1,1-Dichloroethane 1,1-Dichloroethene 1,1-Dichloropropene 1,2,3-Trichlorobenzene 1,2,3-Trichloropropane 1,2,4-Trichlorobenzene 1,2,4-Trimethylbenzene 1,2-Dibromo-3-chloropropane 1,2-Dibromoethane 1,2-Dichlorobenzene 1,2-Dichloroethane 1,2-Dichloropropane 1,3,5-Trimethylbenzene 1,3-Dichlorobenzene 1,3-Dichloropropane 1,4-Dichlorobenzene 2,2-Dichloropropane 2-Chlorotoluene 4-Chlorotoluene Benzene Bromobenzene Bromochloromethane Bromodichloromethane Bromoform Bromomethane Carbon disulfide Carbon tetrachloride Chlorobenzene Chloroethane Chloroform Chloromethane cis-1,2-Dichloroethene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F2602 06/26/17 06/26/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/26/17 14:50 Analyzed: 06/26/17 15:06 ND ND ND ND ND ND ND ND ND ND ND 90 ND ND ND ND ND 40 ND ND ND ND ND ND 20 ND ND ND ND ND 160 ND ND ND ND ND ND 20 20 24 20 20 20 20 20 20 20 20 20 45 20 20 20 20 20 20 20 20 20 20 20 20 20 90 20 20 150 20 20 20 21 20 20 20 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 26 of 39 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 15:23 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-202-25 3PV (3F72601-13) Air cis-1,3-Dichloropropene Dibromochloromethane Dibromomethane Dichlorodifluoromethane Ethylbenzene Hexachlorobutadiene Isopropylbenzene meta- and para-Xylenes Methylene Chloride Naphthalene n-Butylbenzene n-Propylbenzene ortho-Xylene p-Isopropyltoluene sec-Butylbenzene Styrene tert-Butylbenzene Tetrachloroethene Toluene trans-1,2-Dichloroethene trans-1,3-Dichloropropene Trichloroethene Trichlorofluoromethane Vinyl Chloride 2-Propanol Surrogate: Dibromofluoromethane Surrogate: Toluene-d8 Surrogate: 4-Bromofluorobenzene Diisopropyl Ether (DIPE) Ethyl tert-butyl ether (EtBE) Methyl tert-butyl ether (MtBE) tert-Amyl methyl ether (TAME) tert-Butanol (TBA) Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F2602 06/26/17 06/26/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/26/17 14:50 Analyzed: 06/26/17 15:06 ND ND ND ND 90 ND ND 330 ND ND ND ND 110 ND ND ND ND ND 210 ND ND ND ND ND ND 20 90 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 290 ND ND ND ND ND 112 % 95.4 % 102 % 1000 1000 1000 1000 20000 75-125 75-125 75-125 " 1 " " " " " " " " " " " " " " " " " " " " " " " " " " " " The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 27 of 39 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 15:23 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-211-5 3PV (3F72601-14) Air 1,1,1,2-Tetrachloroethane 1,1,1-Trichloroethane 1,1,2,2-Tetrachloroethane 1,1,2-Trichloroethane 1,1,2-Trichloro-trifluoroethane 1,1-Dichloroethane 1,1-Dichloroethene 1,1-Dichloropropene 1,2,3-Trichlorobenzene 1,2,3-Trichloropropane 1,2,4-Trichlorobenzene 1,2,4-Trimethylbenzene 1,2-Dibromo-3-chloropropane 1,2-Dibromoethane 1,2-Dichlorobenzene 1,2-Dichloroethane 1,2-Dichloropropane 1,3,5-Trimethylbenzene 1,3-Dichlorobenzene 1,3-Dichloropropane 1,4-Dichlorobenzene 2,2-Dichloropropane 2-Chlorotoluene 4-Chlorotoluene Benzene Bromobenzene Bromochloromethane Bromodichloromethane Bromoform Bromomethane Carbon disulfide Carbon tetrachloride Chlorobenzene Chloroethane Chloroform Chloromethane cis-1,2-Dichloroethene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F2602 06/26/17 06/26/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/26/17 15:30 Analyzed: 06/26/17 15:47 ND ND ND ND ND ND ND ND ND ND ND 90 ND ND ND ND ND 40 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 20 20 24 20 20 20 20 20 20 20 20 20 45 20 20 20 20 20 20 20 20 20 20 20 20 20 90 20 20 150 20 20 20 21 20 20 20 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 28 of 39 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 15:23 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-211-5 3PV (3F72601-14) Air cis-1,3-Dichloropropene Dibromochloromethane Dibromomethane Dichlorodifluoromethane Ethylbenzene Hexachlorobutadiene Isopropylbenzene meta- and para-Xylenes Methylene Chloride Naphthalene n-Butylbenzene n-Propylbenzene ortho-Xylene p-Isopropyltoluene sec-Butylbenzene Styrene tert-Butylbenzene Tetrachloroethene Toluene trans-1,2-Dichloroethene trans-1,3-Dichloropropene Trichloroethene Trichlorofluoromethane Vinyl Chloride 2-Propanol Surrogate: Dibromofluoromethane Surrogate: Toluene-d8 Surrogate: 4-Bromofluorobenzene Diisopropyl Ether (DIPE) Ethyl tert-butyl ether (EtBE) Methyl tert-butyl ether (MtBE) tert-Amyl methyl ether (TAME) tert-Butanol (TBA) Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F2602 06/26/17 06/26/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/26/17 15:30 Analyzed: 06/26/17 15:47 ND ND ND ND 70 ND ND 290 ND ND ND 20 90 10 ND ND ND ND 150 ND ND ND ND ND ND 20 90 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 290 ND ND ND ND ND 111 % 93.4 % 103 % 1000 1000 1000 1000 20000 75-125 75-125 75-125 " 1 " " " " " " " " " " " " " " " " " " " " " " " " " " " " J The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 29 of 39 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 15:23 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-211-25 3PV (3F72601-15) Air 1,1,1,2-Tetrachloroethane 1,1,1-Trichloroethane 1,1,2,2-Tetrachloroethane 1,1,2-Trichloroethane 1,1,2-Trichloro-trifluoroethane 1,1-Dichloroethane 1,1-Dichloroethene 1,1-Dichloropropene 1,2,3-Trichlorobenzene 1,2,3-Trichloropropane 1,2,4-Trichlorobenzene 1,2,4-Trimethylbenzene 1,2-Dibromo-3-chloropropane 1,2-Dibromoethane 1,2-Dichlorobenzene 1,2-Dichloroethane 1,2-Dichloropropane 1,3,5-Trimethylbenzene 1,3-Dichlorobenzene 1,3-Dichloropropane 1,4-Dichlorobenzene 2,2-Dichloropropane 2-Chlorotoluene 4-Chlorotoluene Benzene Bromobenzene Bromochloromethane Bromodichloromethane Bromoform Bromomethane Carbon disulfide Carbon tetrachloride Chlorobenzene Chloroethane Chloroform Chloromethane cis-1,2-Dichloroethene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F2602 06/26/17 06/26/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/26/17 16:00 Analyzed: 06/26/17 16:15 ND ND ND ND ND ND ND ND ND ND ND 120 ND ND ND ND ND 50 ND ND ND ND ND ND 50 ND ND ND ND ND 170 ND ND ND ND ND ND 20 20 24 20 20 20 20 20 20 20 20 20 45 20 20 20 20 20 20 20 20 20 20 20 20 20 90 20 20 150 20 20 20 21 20 20 20 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 30 of 39 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 15:23 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-211-25 3PV (3F72601-15) Air cis-1,3-Dichloropropene Dibromochloromethane Dibromomethane Dichlorodifluoromethane Ethylbenzene Hexachlorobutadiene Isopropylbenzene meta- and para-Xylenes Methylene Chloride Naphthalene n-Butylbenzene n-Propylbenzene ortho-Xylene p-Isopropyltoluene sec-Butylbenzene Styrene tert-Butylbenzene Tetrachloroethene Toluene trans-1,2-Dichloroethene trans-1,3-Dichloropropene Trichloroethene Trichlorofluoromethane Vinyl Chloride 2-Propanol Surrogate: Dibromofluoromethane Surrogate: Toluene-d8 Surrogate: 4-Bromofluorobenzene Diisopropyl Ether (DIPE) Ethyl tert-butyl ether (EtBE) Methyl tert-butyl ether (MtBE) tert-Amyl methyl ether (TAME) tert-Butanol (TBA) Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F2602 06/26/17 06/26/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/26/17 16:00 Analyzed: 06/26/17 16:15 ND ND ND ND 160 ND ND 560 ND ND ND 30 160 30 ND ND ND ND 480 ND ND ND ND ND ND 20 90 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 290 ND ND ND ND ND 114 % 95.2 % 104 % 1000 1000 1000 1000 20000 75-125 75-125 75-125 " 1 " " " " " " " " " " " " " " " " " " " " " " " " " " " " The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 31 of 39 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 15:23 Volatile Organic Compounds - Quality Control Environmental Support Technologies Result Reporting Limit 1,1,1,2-Tetrachloroethane ND 20 Diisopropyl Ether (DIPE) ND 1000 " 1,1,1-Trichloroethane ND 20 " Ethyl tert-butyl ether (EtBE) ND 1000 " 1,1,2,2-Tetrachloroethane ND 24 " Methyl tert-butyl ether (MtBE) ND 1000 " 1,1,2-Trichloroethane ND 20 " tert-Amyl methyl ether (TAME) ND 1000 " 1,1,2-Trichloro-trifluoroethane ND 20 " tert-Butanol (TBA) ND 20000 " 1,1-Dichloroethane ND 20 " 1,1-Dichloroethene ND 20 " 1,1-Dichloropropene ND 20 " 1,2,3-Trichlorobenzene ND 20 " 1,2,3-Trichloropropane ND 20 " 1,2,4-Trichlorobenzene ND 20 " 1,2,4-Trimethylbenzene ND 20 " 1,2-Dibromo-3-chloropropane ND 45 " 1,2-Dibromoethane ND 20 " 1,2-Dichlorobenzene ND 20 " 1,2-Dichloroethane ND 20 " 1,2-Dichloropropane ND 20 " 1,3,5-Trimethylbenzene ND 20 " 1,3-Dichlorobenzene ND 20 " 1,3-Dichloropropane ND 20 " 1,4-Dichlorobenzene ND 20 " 2,2-Dichloropropane ND 20 " 2-Chlorotoluene ND 20 " 4-Chlorotoluene ND 20 " Benzene ND 20 " Bromobenzene ND 20 " Bromochloromethane ND 90 " Bromodichloromethane ND 20 " Analyte Units Spike Level Source Result %REC %REC Limits RPD RPD Limit Notes Batch 37F2602 - Volatiles Blank (37F2602-BLK1) Prepared & Analyzed: 06/26/17 ug/m³ Air The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 32 of 39 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 15:23 Volatile Organic Compounds - Quality Control Environmental Support Technologies Result Reporting Limit Bromoform ND 20 ug/m³ Air Bromomethane ND 150 " Carbon disulfide ND 20 " Carbon tetrachloride ND 20 " Chlorobenzene ND 20 " Chloroethane ND 21 " Chloroform ND 20 " Chloromethane ND 20 " cis-1,2-Dichloroethene ND 20 " cis-1,3-Dichloropropene ND 20 " Dibromochloromethane ND 90 " Dibromomethane ND 20 " Dichlorodifluoromethane ND 20 " Ethylbenzene ND 20 " Hexachlorobutadiene ND 20 " Isopropylbenzene ND 20 " meta- and para-Xylenes ND 20 " Methylene Chloride ND 20 " Naphthalene ND 20 " n-Butylbenzene ND 20 " n-Propylbenzene ND 20 " ortho-Xylene ND 20 " p-Isopropyltoluene ND 20 " sec-Butylbenzene ND 20 " Styrene ND 20 " tert-Butylbenzene ND 20 " Tetrachloroethene ND 20 " Toluene ND 20 " trans-1,2-Dichloroethene ND 20 " trans-1,3-Dichloropropene ND 20 " Trichloroethene ND 20 " Trichlorofluoromethane ND 20 " Vinyl Chloride ND 20 " Analyte Units Spike Level Source Result %REC %REC Limits RPD RPD Limit Notes Batch 37F2602 - Volatiles Blank (37F2602-BLK1) Prepared & Analyzed: 06/26/17 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 33 of 39 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 15:23 Volatile Organic Compounds - Quality Control Environmental Support Technologies Analyte Result Reporting Limit ND 290 Units Spike Level Source Result %REC %REC Limits RPD RPD Limit Notes Batch 37F2602 - Volatiles Blank (37F2602-BLK1) 2-Propanol Prepared & Analyzed: 06/26/17 ug/m³ Air Surrogate: Dibromofluoromethane 2630 " 2500 105 75-125 Surrogate: Toluene-d8 2380 " 2500 95.2 75-125 Surrogate: 4-Bromofluorobenzene 2560 " 2500 102 75-125 LCS (37F2602-BS1) Prepared & Analyzed: 06/26/17 Diisopropyl Ether (DIPE) 1340 1000 ug/m³ Air 1,1,1,2-Tetrachloroethane 1240 1250 107 85-137 20 " 1250 99.2 Ethyl tert-butyl ether (EtBE) 75-136 1250 1000 " 1250 100 85-130 1,1,1-Trichloroethane 1310 20 " 1250 105 73-134 1,1,2,2-Tetrachloroethane 1200 24 " 1250 96.0 56-149 Methyl tert-butyl ether (MtBE) 2420 1000 " 2500 96.8 85-130 tert-Amyl methyl ether (TAME) 1220 1000 " 1250 97.6 85-125 1,1,2-Trichloroethane 1120 20 " 1250 89.6 67-137 11500 20000 " 12500 91.7 61-159 1,1,2-Trichloro-trifluoroethane 1120 20 " 1250 89.6 83-125 1,1-Dichloroethane 1300 20 " 1250 104 80-121 1,1-Dichloroethene 1270 20 " 1250 102 73-137 1,1-Dichloropropene 1210 20 " 1250 96.8 77-122 1,2,3-Trichlorobenzene 1150 20 " 1250 92.0 67-133 1,2,3-Trichloropropane 1300 20 " 1250 104 56-145 1,2,4-Trichlorobenzene 1290 20 " 1250 103 71-135 1,2,4-Trimethylbenzene 1340 20 " 1250 107 76-140 1,2-Dibromo-3-chloropropane 1290 45 " 1250 103 43-158 1,2-Dibromoethane 1300 20 " 1250 104 80-130 1,2-Dichlorobenzene 1280 20 " 1250 102 67-139 1,2-Dichloroethane 1330 20 " 1250 106 75-131 1,2-Dichloropropane 1230 20 " 1250 98.4 62-144 1,3,5-Trimethylbenzene 1150 20 " 1250 92.0 78-125 1,3-Dichlorobenzene 1380 20 " 1250 110 82-120 1,3-Dichloropropane 1330 20 " 1250 106 61-145 1,4-Dichlorobenzene 1360 20 " 1250 109 84-120 2,2-Dichloropropane 1320 20 " 1250 106 68-134 2-Chlorotoluene 1380 20 " 1250 110 65-127 tert-Butanol (TBA) J The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 34 of 39 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 15:23 Volatile Organic Compounds - Quality Control Environmental Support Technologies Result Reporting Limit 4-Chlorotoluene 1380 20 ug/m³ Air 1250 110 65-127 Benzene 1280 20 " 1250 102 79-118 Bromobenzene 1310 20 " 1250 105 69-140 Bromochloromethane 1250 90 " 1250 100 61-141 Bromodichloromethane 1360 20 " 1250 109 67-137 Bromoform 1300 20 " 1250 104 57-152 Bromomethane 1190 150 " 1250 95.2 51-148 Carbon disulfide 1330 20 " 1250 106 61-140 Carbon tetrachloride 1130 20 " 1250 90.4 74-143 Chlorobenzene 1300 20 " 1250 104 67-140 Chloroethane 1240 21 " 1250 99.2 60-137 Chloroform 1160 20 " 1250 92.8 82-140 Chloromethane 1230 20 " 1250 98.4 58-139 cis-1,2-Dichloroethene 1240 20 " 1250 99.2 85-116 cis-1,3-Dichloropropene 1250 20 " 1250 100 66-142 Dibromochloromethane 1220 90 " 1250 97.6 61-140 Dibromomethane 1280 20 " 1250 102 66-143 Dichlorodifluoromethane 1360 20 " 1250 109 47-129 Ethylbenzene 1120 20 " 1250 89.6 70-125 Hexachlorobutadiene 1280 20 " 1250 102 71-145 Isopropylbenzene 1310 20 " 1250 105 85-116 meta- and para-Xylenes 2680 20 " 2500 107 83-115 Methylene Chloride 1110 20 " 1250 88.8 81-126 Naphthalene 1180 20 " 1250 94.4 56-140 n-Butylbenzene 1320 20 " 1250 106 60-149 n-Propylbenzene 1120 20 " 1250 89.6 77-129 ortho-Xylene 1250 20 " 1250 100 85-115 p-Isopropyltoluene 1240 20 " 1250 99.2 63-144 sec-Butylbenzene 1180 20 " 1250 94.4 68-128 Styrene 1260 20 " 1250 101 65-142 tert-Butylbenzene 1110 20 " 1250 88.8 60-128 Tetrachloroethene 1280 20 " 1250 102 60-144 Toluene 1350 20 " 1250 108 70-115 Analyte Units Spike Level Source Result %REC %REC Limits RPD RPD Limit Notes Batch 37F2602 - Volatiles LCS (37F2602-BS1) Prepared & Analyzed: 06/26/17 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 35 of 39 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 15:23 Volatile Organic Compounds - Quality Control Environmental Support Technologies Result Reporting Limit trans-1,2-Dichloroethene 1110 20 ug/m³ Air 1250 88.8 72-133 trans-1,3-Dichloropropene 1230 20 " 1250 98.4 68-140 Trichloroethene 1280 20 " 1250 102 68-132 Trichlorofluoromethane 1270 20 " 1250 102 62-144 Vinyl Chloride 1200 20 " 1250 96.0 66-137 Analyte Units Spike Level Source Result %REC %REC Limits RPD RPD Limit Notes Batch 37F2602 - Volatiles LCS (37F2602-BS1) Prepared & Analyzed: 06/26/17 Surrogate: Dibromofluoromethane 13100 " 12500 104 75-125 Surrogate: Toluene-d8 12200 " 12500 97.5 75-125 Surrogate: 4-Bromofluorobenzene 13100 " 12500 105 75-125 Duplicate (37F2602-DUP1) Source: 3F72601-03 Diisopropyl Ether (DIPE) ND 1000 1,1,1,2-Tetrachloroethane ND 1,1,1-Trichloroethane Prepared & Analyzed: 06/26/17 ug/m³ Air ND 20 20 " ND 50 ND 20 " ND 50 Ethyl tert-butyl ether (EtBE) ND 1000 " ND 20 1,1,2,2-Tetrachloroethane ND 24 " ND 50 Methyl tert-butyl ether (MtBE) ND 1000 " ND 20 1,1,2-Trichloroethane ND 20 " ND 50 tert-Amyl methyl ether (TAME) ND 1000 " ND 20 1,1,2-Trichloro-trifluoroethane ND 20 " ND 50 tert-Butanol (TBA) ND 20000 " ND 20 1,1-Dichloroethane ND 20 " ND 50 1,1-Dichloroethene ND 20 " ND 50 1,1-Dichloropropene ND 20 " ND 50 1,2,3-Trichlorobenzene ND 20 " ND 50 1,2,3-Trichloropropane ND 20 " ND 50 1,2,4-Trichlorobenzene ND 20 " ND 1,2,4-Trimethylbenzene 50.0 20 " 60.0 1,2-Dibromo-3-chloropropane ND 45 " ND 50 1,2-Dibromoethane ND 20 " ND 50 1,2-Dichlorobenzene ND 20 " ND 50 1,2-Dichloroethane ND 20 " ND 50 1,2-Dichloropropane ND 20 " ND 20.0 20 " 20.0 ND 20 " ND 1,3,5-Trimethylbenzene 1,3-Dichlorobenzene 50 18.2 50 50 0.00 50 50 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 36 of 39 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 15:23 Volatile Organic Compounds - Quality Control Environmental Support Technologies Analyte Result Reporting Limit Units Spike Level Source Result %REC %REC Limits RPD RPD Limit Notes Batch 37F2602 - Volatiles Duplicate (37F2602-DUP1) Source: 3F72601-03 Prepared & Analyzed: 06/26/17 1,3-Dichloropropane ND 20 ug/m³ Air ND 50 1,4-Dichlorobenzene ND 20 " ND 50 2,2-Dichloropropane ND 20 " ND 50 2-Chlorotoluene ND 20 " ND 50 4-Chlorotoluene ND 20 " ND 50 Benzene ND 20 " ND 50 Bromobenzene ND 20 " ND 50 Bromochloromethane ND 90 " ND 50 Bromodichloromethane ND 20 " ND 50 Bromoform ND 20 " ND 50 Bromomethane ND 150 " ND 50 Carbon disulfide ND 20 " ND 50 Carbon tetrachloride ND 20 " ND 50 Chlorobenzene ND 20 " ND 50 Chloroethane ND 21 " ND 50 Chloroform ND 20 " ND 50 Chloromethane ND 20 " ND 50 cis-1,2-Dichloroethene ND 20 " ND 50 cis-1,3-Dichloropropene ND 20 " ND 50 Dibromochloromethane ND 90 " ND 50 Dibromomethane ND 20 " ND 50 Dichlorodifluoromethane ND 20 " ND 40.0 20 " 40.0 Hexachlorobutadiene ND 20 " ND Isopropylbenzene ND 20 " ND meta- and para-Xylenes 160 20 " 180 Methylene Chloride ND 20 " ND 50 Naphthalene ND 20 " ND 50 n-Butylbenzene ND 20 " ND n-Propylbenzene 10.0 20 " 10.0 0.00 50 ortho-Xylene 50.0 20 " 50.0 0.00 50 p-Isopropyltoluene ND 20 " ND 50 sec-Butylbenzene ND 20 " ND 50 Ethylbenzene 50 0.00 50 50 50 11.8 50 50 J The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 37 of 39 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 15:23 Volatile Organic Compounds - Quality Control Environmental Support Technologies Analyte Result Reporting Limit Units Spike Level Source Result %REC %REC Limits RPD RPD Limit Notes Batch 37F2602 - Volatiles Duplicate (37F2602-DUP1) Source: 3F72601-03 Prepared & Analyzed: 06/26/17 Styrene ND 20 ug/m³ Air ND 50 tert-Butylbenzene ND 20 " ND 50 Tetrachloroethene ND 20 " ND 90.0 20 " 90.0 trans-1,2-Dichloroethene ND 20 " ND 50 trans-1,3-Dichloropropene ND 20 " ND 50 Trichloroethene ND 20 " ND 50 Trichlorofluoromethane ND 20 " ND 50 Vinyl Chloride ND 20 " ND 50 2-Propanol ND 290 " ND 200 Toluene 50 0.00 Surrogate: Dibromofluoromethane 2510 " 2500 100 75-125 Surrogate: Toluene-d8 2410 " 2500 96.6 75-125 Surrogate: 4-Bromofluorobenzene 2440 " 2500 97.6 75-125 50 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 38 of 39 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 15:23 Notes and Definitions J Detected but below the Reporting Limit; therefore, result is an estimated concentration (CLP J-Flag). DET Analyte DETECTED ND Analyte NOT DETECTED at or above the reporting limit NR Not Reported dry Sample results reported on a dry weight basis RPD Relative Percent Difference The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 39 of 39 Items for Project Manager Review LabNumber Analysis 3F72601-05 OXY SG Analyte Exception Missing 4-Bromofluorobenzene 3F72601-02 OXY SG Missing Dibromofluoromethane 3F72601-01 OXY SG Missing Dibromofluoromethane 3F72601-15 OXY SG Missing 4-Bromofluorobenzene 3F72601-14 OXY SG Missing 4-Bromofluorobenzene 3F72601-13 OXY SG Missing 4-Bromofluorobenzene 3F72601-12 OXY SG Missing 4-Bromofluorobenzene 3F72601-11 OXY SG Missing 4-Bromofluorobenzene 3F72601-10 OXY SG Missing 4-Bromofluorobenzene 3F72601-09 OXY SG Missing 4-Bromofluorobenzene 3F72601-08 OXY SG Missing 4-Bromofluorobenzene 3F72601-06 OXY SG Missing 4-Bromofluorobenzene 3F72601-05 OXY SG Missing Dibromofluoromethane 3F72601-04 OXY SG Missing 4-Bromofluorobenzene 3F72601-03 OXY SG Missing 4-Bromofluorobenzene 3F72601-02 OXY SG Missing 4-Bromofluorobenzene 3F72601-01 OXY SG This is a modified report Missing 4-Bromofluorobenzene OXY SG (Air) Special Units Used 8260B (SG) / CHHSLS RES (Air) Special Units Used OXY SG (Air) J-Flags used 8260B (SG) / CHHSLS RES (Air) J-Flags used OXY SG (Air) Result calculations based on MDL 8260B (SG) / CHHSLS RES (Air) Result calculations based on MDL VERSION 5.8.5:2735 3F72601-07 OXY SG Missing 4-Bromofluorobenzene 3F72601-01 OXY SG Missing Toluene-d8 3F72601-14 OXY SG Missing Toluene-d8 3F72601-13 OXY SG Missing Toluene-d8 3F72601-12 OXY SG Missing Toluene-d8 3F72601-11 OXY SG Missing Toluene-d8 3F72601-10 OXY SG Missing Toluene-d8 3F72601-09 OXY SG Missing Toluene-d8 3F72601-08 OXY SG Missing Toluene-d8 3F72601-07 OXY SG Missing Toluene-d8 3F72601-06 OXY SG Missing Toluene-d8 3F72601-05 OXY SG Missing Toluene-d8 3F72601-04 OXY SG Missing Toluene-d8 3F72601-03 OXY SG Missing Dibromofluoromethane 3F72601-02 OXY SG Missing Toluene-d8 3F72601-04 OXY SG Missing Dibromofluoromethane 3F72601-15 OXY SG Missing Dibromofluoromethane 3F72601-14 OXY SG Missing Dibromofluoromethane 3F72601-13 OXY SG Missing Dibromofluoromethane 3F72601-12 OXY SG Missing Dibromofluoromethane 3F72601-11 OXY SG Missing Dibromofluoromethane 3F72601-10 OXY SG Missing Dibromofluoromethane 3F72601-09 OXY SG Missing Dibromofluoromethane June 29, 2017 Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 RE: Otay Ranch Village 3 Chula Vista, CA. 91911 Enclosed are the results of analyses for soil gas samples received by Environmental Support Technologies laboratory on 06/27/17 16:28. The analyses were performed according to the prescribed method as outlined by EPA 8260B. A shut in test was performed, leak test was performed, equipment blank was run, and selected purge volume was 3PV. If you have any questions concerning this report, please feel free to contact Project Manager. Sincerely, Ashley Flores Ashley Flores Project Manager Environmental Support Technologies laboratories are certified by the California Department of Health Services (CDHS), Environmental Laboratory Accreditation Program (ELAP) No's. 2772, 2773, and 2767. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann Reported: 29-Jun-17 16:06 ANALYTICAL REPORT FOR SAMPLES Sample ID Laboratory ID Matrix Date Sampled Date Analyzed Equipment Blank 3F72701-01 Air 27-Jun-17 07:20 27-Jun-17 07:38 Material Blank 3F72701-02 Air 27-Jun-17 07:50 27-Jun-17 08:08 SGP-42-5 3PV 3F72701-03 Air 27-Jun-17 08:25 27-Jun-17 08:37 SGP-42-25 3PV 3F72701-04 Air 27-Jun-17 09:20 27-Jun-17 09:33 SGP-51-5 3PV 3F72701-05 Air 27-Jun-17 09:50 27-Jun-17 10:02 SGP-51-25 3PV 3F72701-06 Air 27-Jun-17 10:15 27-Jun-17 10:30 SGP-342-5 3PV 3F72701-07 Air 27-Jun-17 10:45 27-Jun-17 10:59 SGP-342-32 3PV 3F72701-08 Air 27-Jun-17 11:10 27-Jun-17 11:27 SGP-101-5 3PV 3F72701-09 Air 27-Jun-17 11:45 27-Jun-17 11:55 SGP-101-25 3PV 3F72701-10 Air 27-Jun-17 12:25 27-Jun-17 12:41 SGP-108-5 3PV 3F72701-11 Air 27-Jun-17 13:40 27-Jun-17 13:55 SGP-108-25 3PV 3F72701-12 Air 27-Jun-17 14:10 27-Jun-17 14:23 SGP-94-5 3PV 3F72701-13 Air 27-Jun-17 14:40 27-Jun-17 14:52 SGP-94-25 3PV 3F72701-14 Air 27-Jun-17 15:05 27-Jun-17 15:20 SGP-126-5 3PV 3F72701-15 Air 27-Jun-17 15:35 27-Jun-17 15:49 SGP-126-25 3PV 3F72701-16 Air 27-Jun-17 16:05 27-Jun-17 16:17 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 1 of 41 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 16:06 Volatile Organic Compounds Environmental Support Technologies Analyte Equipment Blank (3F72701-01) Air 1,1,1,2-Tetrachloroethane 1,1,1-Trichloroethane 1,1,2,2-Tetrachloroethane 1,1,2-Trichloroethane 1,1,2-Trichloro-trifluoroethane 1,1-Dichloroethane 1,1-Dichloroethene 1,1-Dichloropropene 1,2,3-Trichlorobenzene 1,2,3-Trichloropropane 1,2,4-Trichlorobenzene 1,2,4-Trimethylbenzene 1,2-Dibromo-3-chloropropane 1,2-Dibromoethane 1,2-Dichlorobenzene 1,2-Dichloroethane 1,2-Dichloropropane 1,3,5-Trimethylbenzene 1,3-Dichlorobenzene 1,3-Dichloropropane 1,4-Dichlorobenzene 2,2-Dichloropropane 2-Chlorotoluene 4-Chlorotoluene Benzene Bromobenzene Bromochloromethane Bromodichloromethane Bromoform Bromomethane Carbon disulfide Carbon tetrachloride Chlorobenzene Chloroethane Chloroform Chloromethane cis-1,2-Dichloroethene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F2702 06/27/17 06/27/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/27/17 07:20 Analyzed: 06/27/17 07:38 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 20 20 24 20 20 20 20 20 20 20 20 20 45 20 20 20 20 20 20 20 20 20 20 20 20 20 90 20 20 150 20 20 20 21 20 20 20 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 2 of 41 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 16:06 Volatile Organic Compounds Environmental Support Technologies Analyte Equipment Blank (3F72701-01) Air cis-1,3-Dichloropropene Dibromochloromethane Dibromomethane Dichlorodifluoromethane Ethylbenzene Hexachlorobutadiene Isopropylbenzene meta- and para-Xylenes Methylene Chloride Naphthalene n-Butylbenzene n-Propylbenzene ortho-Xylene p-Isopropyltoluene sec-Butylbenzene Styrene tert-Butylbenzene Tetrachloroethene Toluene trans-1,2-Dichloroethene trans-1,3-Dichloropropene Trichloroethene Trichlorofluoromethane Vinyl Chloride 2-Propanol Surrogate: Dibromofluoromethane Surrogate: Toluene-d8 Surrogate: 4-Bromofluorobenzene Diisopropyl Ether (DIPE) Ethyl tert-butyl ether (EtBE) Methyl tert-butyl ether (MtBE) tert-Amyl methyl ether (TAME) tert-Butanol (TBA) Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F2702 06/27/17 06/27/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/27/17 07:20 Analyzed: 06/27/17 07:38 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 20 90 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 290 ND ND ND ND ND 109 % 93.2 % 103 % 1000 1000 1000 1000 20000 75-125 75-125 75-125 " 1 " " " " " " " " " " " " " " " " " " " " " " " " " " " " The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 3 of 41 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 16:06 Volatile Organic Compounds Environmental Support Technologies Analyte Material Blank (3F72701-02) Air 1,1,1,2-Tetrachloroethane 1,1,1-Trichloroethane 1,1,2,2-Tetrachloroethane 1,1,2-Trichloroethane 1,1,2-Trichloro-trifluoroethane 1,1-Dichloroethane 1,1-Dichloroethene 1,1-Dichloropropene 1,2,3-Trichlorobenzene 1,2,3-Trichloropropane 1,2,4-Trichlorobenzene 1,2,4-Trimethylbenzene 1,2-Dibromo-3-chloropropane 1,2-Dibromoethane 1,2-Dichlorobenzene 1,2-Dichloroethane 1,2-Dichloropropane 1,3,5-Trimethylbenzene 1,3-Dichlorobenzene 1,3-Dichloropropane 1,4-Dichlorobenzene 2,2-Dichloropropane 2-Chlorotoluene 4-Chlorotoluene Benzene Bromobenzene Bromochloromethane Bromodichloromethane Bromoform Bromomethane Carbon disulfide Carbon tetrachloride Chlorobenzene Chloroethane Chloroform Chloromethane cis-1,2-Dichloroethene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F2702 06/27/17 06/27/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/27/17 07:50 Analyzed: 06/27/17 08:08 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 20 20 24 20 20 20 20 20 20 20 20 20 45 20 20 20 20 20 20 20 20 20 20 20 20 20 90 20 20 150 20 20 20 21 20 20 20 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 4 of 41 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 16:06 Volatile Organic Compounds Environmental Support Technologies Analyte Material Blank (3F72701-02) Air cis-1,3-Dichloropropene Dibromochloromethane Dibromomethane Dichlorodifluoromethane Ethylbenzene Hexachlorobutadiene Isopropylbenzene meta- and para-Xylenes Methylene Chloride Naphthalene n-Butylbenzene n-Propylbenzene ortho-Xylene p-Isopropyltoluene sec-Butylbenzene Styrene tert-Butylbenzene Tetrachloroethene Toluene trans-1,2-Dichloroethene trans-1,3-Dichloropropene Trichloroethene Trichlorofluoromethane Vinyl Chloride 2-Propanol Surrogate: Dibromofluoromethane Surrogate: Toluene-d8 Surrogate: 4-Bromofluorobenzene Diisopropyl Ether (DIPE) Ethyl tert-butyl ether (EtBE) Methyl tert-butyl ether (MtBE) tert-Amyl methyl ether (TAME) tert-Butanol (TBA) Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F2702 06/27/17 06/27/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/27/17 07:50 Analyzed: 06/27/17 08:08 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 20 90 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 290 ND ND ND ND ND 109 % 93.6 % 102 % 1000 1000 1000 1000 20000 75-125 75-125 75-125 " 1 " " " " " " " " " " " " " " " " " " " " " " " " " " " " The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 5 of 41 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 16:06 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-42-5 3PV (3F72701-03) Air 1,1,1,2-Tetrachloroethane 1,1,1-Trichloroethane 1,1,2,2-Tetrachloroethane 1,1,2-Trichloroethane 1,1,2-Trichloro-trifluoroethane 1,1-Dichloroethane 1,1-Dichloroethene 1,1-Dichloropropene 1,2,3-Trichlorobenzene 1,2,3-Trichloropropane 1,2,4-Trichlorobenzene 1,2,4-Trimethylbenzene 1,2-Dibromo-3-chloropropane 1,2-Dibromoethane 1,2-Dichlorobenzene 1,2-Dichloroethane 1,2-Dichloropropane 1,3,5-Trimethylbenzene 1,3-Dichlorobenzene 1,3-Dichloropropane 1,4-Dichlorobenzene 2,2-Dichloropropane 2-Chlorotoluene 4-Chlorotoluene Benzene Bromobenzene Bromochloromethane Bromodichloromethane Bromoform Bromomethane Carbon disulfide Carbon tetrachloride Chlorobenzene Chloroethane Chloroform Chloromethane cis-1,2-Dichloroethene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F2702 06/27/17 06/27/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/27/17 08:25 Analyzed: 06/27/17 08:37 ND ND ND ND ND ND ND ND ND ND ND 200 ND ND ND ND ND 80 ND ND ND ND ND ND 20 ND ND ND ND ND ND ND ND ND ND ND ND 20 20 24 20 20 20 20 20 20 20 20 20 45 20 20 20 20 20 20 20 20 20 20 20 20 20 90 20 20 150 20 20 20 21 20 20 20 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 6 of 41 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 16:06 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-42-5 3PV (3F72701-03) Air cis-1,3-Dichloropropene Dibromochloromethane Dibromomethane Dichlorodifluoromethane Ethylbenzene Hexachlorobutadiene Isopropylbenzene meta- and para-Xylenes Methylene Chloride Naphthalene n-Butylbenzene n-Propylbenzene ortho-Xylene p-Isopropyltoluene sec-Butylbenzene Styrene tert-Butylbenzene Tetrachloroethene Toluene trans-1,2-Dichloroethene trans-1,3-Dichloropropene Trichloroethene Trichlorofluoromethane Vinyl Chloride 2-Propanol Surrogate: Dibromofluoromethane Surrogate: Toluene-d8 Surrogate: 4-Bromofluorobenzene Diisopropyl Ether (DIPE) Ethyl tert-butyl ether (EtBE) Methyl tert-butyl ether (MtBE) tert-Amyl methyl ether (TAME) tert-Butanol (TBA) Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F2702 06/27/17 06/27/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/27/17 08:25 Analyzed: 06/27/17 08:37 ND ND ND ND 140 ND ND 580 ND ND ND 40 200 20 ND ND ND ND 370 ND ND ND 20 ND ND 20 90 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 290 ND ND ND ND ND 99.8 % 97.6 % 102 % 1000 1000 1000 1000 20000 75-125 75-125 75-125 " 1 " " " " " " " " " " " " " " " " " " " " " " " " " " " " The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 7 of 41 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 16:06 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-42-25 3PV (3F72701-04) Air 1,1,1,2-Tetrachloroethane 1,1,1-Trichloroethane 1,1,2,2-Tetrachloroethane 1,1,2-Trichloroethane 1,1,2-Trichloro-trifluoroethane 1,1-Dichloroethane 1,1-Dichloroethene 1,1-Dichloropropene 1,2,3-Trichlorobenzene 1,2,3-Trichloropropane 1,2,4-Trichlorobenzene 1,2,4-Trimethylbenzene 1,2-Dibromo-3-chloropropane 1,2-Dibromoethane 1,2-Dichlorobenzene 1,2-Dichloroethane 1,2-Dichloropropane 1,3,5-Trimethylbenzene 1,3-Dichlorobenzene 1,3-Dichloropropane 1,4-Dichlorobenzene 2,2-Dichloropropane 2-Chlorotoluene 4-Chlorotoluene Benzene Bromobenzene Bromochloromethane Bromodichloromethane Bromoform Bromomethane Carbon disulfide Carbon tetrachloride Chlorobenzene Chloroethane Chloroform Chloromethane cis-1,2-Dichloroethene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F2702 06/27/17 06/27/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/27/17 09:20 Analyzed: 06/27/17 09:33 ND ND ND ND ND ND ND ND ND ND ND 280 ND ND ND ND ND 110 ND ND ND ND ND ND 40 ND ND ND ND ND ND ND ND ND ND ND ND 20 20 24 20 20 20 20 20 20 20 20 20 45 20 20 20 20 20 20 20 20 20 20 20 20 20 90 20 20 150 20 20 20 21 20 20 20 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 8 of 41 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 16:06 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-42-25 3PV (3F72701-04) Air cis-1,3-Dichloropropene Dibromochloromethane Dibromomethane Dichlorodifluoromethane Ethylbenzene Hexachlorobutadiene Isopropylbenzene meta- and para-Xylenes Methylene Chloride Naphthalene n-Butylbenzene n-Propylbenzene ortho-Xylene p-Isopropyltoluene sec-Butylbenzene Styrene tert-Butylbenzene Tetrachloroethene Toluene trans-1,2-Dichloroethene trans-1,3-Dichloropropene Trichloroethene Trichlorofluoromethane Vinyl Chloride 2-Propanol Surrogate: Dibromofluoromethane Surrogate: Toluene-d8 Surrogate: 4-Bromofluorobenzene Diisopropyl Ether (DIPE) Ethyl tert-butyl ether (EtBE) Methyl tert-butyl ether (MtBE) tert-Amyl methyl ether (TAME) tert-Butanol (TBA) Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F2702 06/27/17 06/27/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/27/17 09:20 Analyzed: 06/27/17 09:33 ND ND ND ND 170 ND 10 720 ND ND ND 50 250 30 ND ND ND ND 430 ND ND ND 20 ND ND 20 90 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 290 ND ND ND ND ND 104 % 96.5 % 100 % 1000 1000 1000 1000 20000 75-125 75-125 75-125 " 1 " " " " " " " " " " " " " " " " " " " " " " " " " " " " J The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 9 of 41 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 16:06 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-51-5 3PV (3F72701-05) Air 1,1,1,2-Tetrachloroethane 1,1,1-Trichloroethane 1,1,2,2-Tetrachloroethane 1,1,2-Trichloroethane 1,1,2-Trichloro-trifluoroethane 1,1-Dichloroethane 1,1-Dichloroethene 1,1-Dichloropropene 1,2,3-Trichlorobenzene 1,2,3-Trichloropropane 1,2,4-Trichlorobenzene 1,2,4-Trimethylbenzene 1,2-Dibromo-3-chloropropane 1,2-Dibromoethane 1,2-Dichlorobenzene 1,2-Dichloroethane 1,2-Dichloropropane 1,3,5-Trimethylbenzene 1,3-Dichlorobenzene 1,3-Dichloropropane 1,4-Dichlorobenzene 2,2-Dichloropropane 2-Chlorotoluene 4-Chlorotoluene Benzene Bromobenzene Bromochloromethane Bromodichloromethane Bromoform Bromomethane Carbon disulfide Carbon tetrachloride Chlorobenzene Chloroethane Chloroform Chloromethane cis-1,2-Dichloroethene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F2702 06/27/17 06/27/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/27/17 09:50 Analyzed: 06/27/17 10:02 ND ND ND ND ND ND ND ND ND ND ND 190 ND ND ND ND ND 80 ND ND ND ND ND ND 60 ND ND ND ND ND ND ND ND ND ND ND ND 20 20 24 20 20 20 20 20 20 20 20 20 45 20 20 20 20 20 20 20 20 20 20 20 20 20 90 20 20 150 20 20 20 21 20 20 20 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 10 of 41 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 16:06 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-51-5 3PV (3F72701-05) Air cis-1,3-Dichloropropene Dibromochloromethane Dibromomethane Dichlorodifluoromethane Ethylbenzene Hexachlorobutadiene Isopropylbenzene meta- and para-Xylenes Methylene Chloride Naphthalene n-Butylbenzene n-Propylbenzene ortho-Xylene p-Isopropyltoluene sec-Butylbenzene Styrene tert-Butylbenzene Tetrachloroethene Toluene trans-1,2-Dichloroethene trans-1,3-Dichloropropene Trichloroethene Trichlorofluoromethane Vinyl Chloride 2-Propanol Surrogate: Dibromofluoromethane Surrogate: Toluene-d8 Surrogate: 4-Bromofluorobenzene Diisopropyl Ether (DIPE) Ethyl tert-butyl ether (EtBE) Methyl tert-butyl ether (MtBE) tert-Amyl methyl ether (TAME) tert-Butanol (TBA) Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F2702 06/27/17 06/27/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/27/17 09:50 Analyzed: 06/27/17 10:02 ND ND ND ND 210 ND 10 760 ND ND ND 40 220 30 ND ND ND ND 660 ND ND ND 10 ND ND 20 90 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 290 ND ND ND ND ND 103 % 95.1 % 98.1 % 1000 1000 1000 1000 20000 " " 75-125 75-125 75-125 " " " " " " " " " " " " " " " " " 1 " " " " " " " " " " " " " " " " " " " " " " " " " " " " J J The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 11 of 41 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 16:06 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-51-25 3PV (3F72701-06) Air 1,1,1,2-Tetrachloroethane 1,1,1-Trichloroethane 1,1,2,2-Tetrachloroethane 1,1,2-Trichloroethane 1,1,2-Trichloro-trifluoroethane 1,1-Dichloroethane 1,1-Dichloroethene 1,1-Dichloropropene 1,2,3-Trichlorobenzene 1,2,3-Trichloropropane 1,2,4-Trichlorobenzene 1,2,4-Trimethylbenzene 1,2-Dibromo-3-chloropropane 1,2-Dibromoethane 1,2-Dichlorobenzene 1,2-Dichloroethane 1,2-Dichloropropane 1,3,5-Trimethylbenzene 1,3-Dichlorobenzene 1,3-Dichloropropane 1,4-Dichlorobenzene 2,2-Dichloropropane 2-Chlorotoluene 4-Chlorotoluene Benzene Bromobenzene Bromochloromethane Bromodichloromethane Bromoform Bromomethane Carbon disulfide Carbon tetrachloride Chlorobenzene Chloroethane Chloroform Chloromethane cis-1,2-Dichloroethene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F2702 06/27/17 06/27/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/27/17 10:15 Analyzed: 06/27/17 10:30 ND ND ND ND ND ND ND ND ND ND ND 80 ND ND ND ND ND 40 ND ND ND ND ND ND 20 ND ND ND ND ND 160 ND ND ND ND ND ND 20 20 24 20 20 20 20 20 20 20 20 20 45 20 20 20 20 20 20 20 20 20 20 20 20 20 90 20 20 150 20 20 20 21 20 20 20 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 12 of 41 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 16:06 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-51-25 3PV (3F72701-06) Air cis-1,3-Dichloropropene Dibromochloromethane Dibromomethane Dichlorodifluoromethane Ethylbenzene Hexachlorobutadiene Isopropylbenzene meta- and para-Xylenes Methylene Chloride Naphthalene n-Butylbenzene n-Propylbenzene ortho-Xylene p-Isopropyltoluene sec-Butylbenzene Styrene tert-Butylbenzene Tetrachloroethene Toluene trans-1,2-Dichloroethene trans-1,3-Dichloropropene Trichloroethene Trichlorofluoromethane Vinyl Chloride 2-Propanol Surrogate: Dibromofluoromethane Surrogate: Toluene-d8 Surrogate: 4-Bromofluorobenzene Diisopropyl Ether (DIPE) Ethyl tert-butyl ether (EtBE) Methyl tert-butyl ether (MtBE) tert-Amyl methyl ether (TAME) tert-Butanol (TBA) Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F2702 06/27/17 06/27/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/27/17 10:15 Analyzed: 06/27/17 10:30 ND ND ND ND 60 ND 60 220 ND ND ND 20 70 50 ND ND ND ND 130 ND ND ND ND ND ND 20 90 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 290 ND ND ND ND ND 109 % 92.6 % 102 % 1000 1000 1000 1000 20000 75-125 75-125 75-125 " 1 " " " " " " " " " " " " " " " " " " " " " " " " " " " " The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 13 of 41 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 16:06 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-342-5 3PV (3F72701-07) Air 1,1,1,2-Tetrachloroethane 1,1,1-Trichloroethane 1,1,2,2-Tetrachloroethane 1,1,2-Trichloroethane 1,1,2-Trichloro-trifluoroethane 1,1-Dichloroethane 1,1-Dichloroethene 1,1-Dichloropropene 1,2,3-Trichlorobenzene 1,2,3-Trichloropropane 1,2,4-Trichlorobenzene 1,2,4-Trimethylbenzene 1,2-Dibromo-3-chloropropane 1,2-Dibromoethane 1,2-Dichlorobenzene 1,2-Dichloroethane 1,2-Dichloropropane 1,3,5-Trimethylbenzene 1,3-Dichlorobenzene 1,3-Dichloropropane 1,4-Dichlorobenzene 2,2-Dichloropropane 2-Chlorotoluene 4-Chlorotoluene Benzene Bromobenzene Bromochloromethane Bromodichloromethane Bromoform Bromomethane Carbon disulfide Carbon tetrachloride Chlorobenzene Chloroethane Chloroform Chloromethane cis-1,2-Dichloroethene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F2702 06/27/17 06/27/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/27/17 10:45 Analyzed: 06/27/17 10:59 ND ND ND ND ND ND ND ND ND ND ND 80 ND ND ND ND ND 30 ND ND ND ND ND ND 20 ND ND ND ND ND ND ND ND ND ND ND ND 20 20 24 20 20 20 20 20 20 20 20 20 45 20 20 20 20 20 20 20 20 20 20 20 20 20 90 20 20 150 20 20 20 21 20 20 20 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 14 of 41 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 16:06 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-342-5 3PV (3F72701-07) Air cis-1,3-Dichloropropene Dibromochloromethane Dibromomethane Dichlorodifluoromethane Ethylbenzene Hexachlorobutadiene Isopropylbenzene meta- and para-Xylenes Methylene Chloride Naphthalene n-Butylbenzene n-Propylbenzene ortho-Xylene p-Isopropyltoluene sec-Butylbenzene Styrene tert-Butylbenzene Tetrachloroethene Toluene trans-1,2-Dichloroethene trans-1,3-Dichloropropene Trichloroethene Trichlorofluoromethane Vinyl Chloride 2-Propanol Surrogate: Dibromofluoromethane Surrogate: Toluene-d8 Surrogate: 4-Bromofluorobenzene Diisopropyl Ether (DIPE) Ethyl tert-butyl ether (EtBE) Methyl tert-butyl ether (MtBE) tert-Amyl methyl ether (TAME) tert-Butanol (TBA) Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F2702 06/27/17 06/27/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/27/17 10:45 Analyzed: 06/27/17 10:59 ND ND ND ND 70 ND ND 240 ND ND ND 20 80 20 ND ND ND ND 160 ND ND ND ND ND ND 20 90 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 290 ND ND ND ND ND 109 % 96.4 % 102 % 1000 1000 1000 1000 20000 75-125 75-125 75-125 " 1 " " " " " " " " " " " " " " " " " " " " " " " " " " " " The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 15 of 41 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 16:06 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-342-32 3PV (3F72701-08) Air 1,1,1,2-Tetrachloroethane 1,1,1-Trichloroethane 1,1,2,2-Tetrachloroethane 1,1,2-Trichloroethane 1,1,2-Trichloro-trifluoroethane 1,1-Dichloroethane 1,1-Dichloroethene 1,1-Dichloropropene 1,2,3-Trichlorobenzene 1,2,3-Trichloropropane 1,2,4-Trichlorobenzene 1,2,4-Trimethylbenzene 1,2-Dibromo-3-chloropropane 1,2-Dibromoethane 1,2-Dichlorobenzene 1,2-Dichloroethane 1,2-Dichloropropane 1,3,5-Trimethylbenzene 1,3-Dichlorobenzene 1,3-Dichloropropane 1,4-Dichlorobenzene 2,2-Dichloropropane 2-Chlorotoluene 4-Chlorotoluene Benzene Bromobenzene Bromochloromethane Bromodichloromethane Bromoform Bromomethane Carbon disulfide Carbon tetrachloride Chlorobenzene Chloroethane Chloroform Chloromethane cis-1,2-Dichloroethene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F2702 06/27/17 06/27/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/27/17 11:10 Analyzed: 06/27/17 11:27 ND ND ND ND ND ND ND ND ND ND ND 10 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 10 ND ND 20 20 24 20 20 20 20 20 20 20 20 20 45 20 20 20 20 20 20 20 20 20 20 20 20 20 90 20 20 150 20 20 20 21 20 20 20 J J The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 16 of 41 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 16:06 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-342-32 3PV (3F72701-08) Air cis-1,3-Dichloropropene Dibromochloromethane Dibromomethane Dichlorodifluoromethane Ethylbenzene Hexachlorobutadiene Isopropylbenzene meta- and para-Xylenes Methylene Chloride Naphthalene n-Butylbenzene n-Propylbenzene ortho-Xylene p-Isopropyltoluene sec-Butylbenzene Styrene tert-Butylbenzene Tetrachloroethene Toluene trans-1,2-Dichloroethene trans-1,3-Dichloropropene Trichloroethene Trichlorofluoromethane Vinyl Chloride 2-Propanol Surrogate: Dibromofluoromethane Surrogate: Toluene-d8 Surrogate: 4-Bromofluorobenzene Diisopropyl Ether (DIPE) Ethyl tert-butyl ether (EtBE) Methyl tert-butyl ether (MtBE) tert-Amyl methyl ether (TAME) tert-Butanol (TBA) Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F2702 06/27/17 06/27/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/27/17 11:10 Analyzed: 06/27/17 11:27 ND ND ND ND ND ND ND 20 ND ND ND ND ND ND ND ND ND ND 10 ND ND ND ND ND ND 20 90 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 290 ND ND ND ND ND 104 % 97.0 % 101 % 1000 1000 1000 1000 20000 75-125 75-125 75-125 " 1 " " " " " " " " " " " " " " " " " " " " " " " " " " " " J The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 17 of 41 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 16:06 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-101-5 3PV (3F72701-09) Air 1,1,1,2-Tetrachloroethane 1,1,1-Trichloroethane 1,1,2,2-Tetrachloroethane 1,1,2-Trichloroethane 1,1,2-Trichloro-trifluoroethane 1,1-Dichloroethane 1,1-Dichloroethene 1,1-Dichloropropene 1,2,3-Trichlorobenzene 1,2,3-Trichloropropane 1,2,4-Trichlorobenzene 1,2,4-Trimethylbenzene 1,2-Dibromo-3-chloropropane 1,2-Dibromoethane 1,2-Dichlorobenzene 1,2-Dichloroethane 1,2-Dichloropropane 1,3,5-Trimethylbenzene 1,3-Dichlorobenzene 1,3-Dichloropropane 1,4-Dichlorobenzene 2,2-Dichloropropane 2-Chlorotoluene 4-Chlorotoluene Benzene Bromobenzene Bromochloromethane Bromodichloromethane Bromoform Bromomethane Carbon disulfide Carbon tetrachloride Chlorobenzene Chloroethane Chloroform Chloromethane cis-1,2-Dichloroethene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F2702 06/27/17 06/27/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/27/17 11:45 Analyzed: 06/27/17 11:55 ND ND ND ND ND ND ND ND ND ND ND 150 ND ND ND ND ND 70 ND ND ND ND ND ND 30 ND ND ND ND ND ND ND ND ND ND ND ND 20 20 24 20 20 20 20 20 20 20 20 20 45 20 20 20 20 20 20 20 20 20 20 20 20 20 90 20 20 150 20 20 20 21 20 20 20 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 18 of 41 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 16:06 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-101-5 3PV (3F72701-09) Air cis-1,3-Dichloropropene Dibromochloromethane Dibromomethane Dichlorodifluoromethane Ethylbenzene Hexachlorobutadiene Isopropylbenzene meta- and para-Xylenes Methylene Chloride Naphthalene n-Butylbenzene n-Propylbenzene ortho-Xylene p-Isopropyltoluene sec-Butylbenzene Styrene tert-Butylbenzene Tetrachloroethene Toluene trans-1,2-Dichloroethene trans-1,3-Dichloropropene Trichloroethene Trichlorofluoromethane Vinyl Chloride 2-Propanol Surrogate: Dibromofluoromethane Surrogate: Toluene-d8 Surrogate: 4-Bromofluorobenzene Diisopropyl Ether (DIPE) Ethyl tert-butyl ether (EtBE) Methyl tert-butyl ether (MtBE) tert-Amyl methyl ether (TAME) tert-Butanol (TBA) Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F2702 06/27/17 06/27/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/27/17 11:45 Analyzed: 06/27/17 11:55 ND ND ND ND 90 ND 10 390 ND ND ND 30 130 10 ND ND ND ND 270 ND ND ND ND ND ND 20 90 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 290 ND ND ND ND ND 106 % 95.0 % 101 % 1000 1000 1000 1000 20000 75-125 75-125 75-125 " 1 " " " " " " " " " " " " " " " " " " " " " " " " " " " " J J The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 19 of 41 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 16:06 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-101-25 3PV (3F72701-10) Air 1,1,1,2-Tetrachloroethane 1,1,1-Trichloroethane 1,1,2,2-Tetrachloroethane 1,1,2-Trichloroethane 1,1,2-Trichloro-trifluoroethane 1,1-Dichloroethane 1,1-Dichloroethene 1,1-Dichloropropene 1,2,3-Trichlorobenzene 1,2,3-Trichloropropane 1,2,4-Trichlorobenzene 1,2,4-Trimethylbenzene 1,2-Dibromo-3-chloropropane 1,2-Dibromoethane 1,2-Dichlorobenzene 1,2-Dichloroethane 1,2-Dichloropropane 1,3,5-Trimethylbenzene 1,3-Dichlorobenzene 1,3-Dichloropropane 1,4-Dichlorobenzene 2,2-Dichloropropane 2-Chlorotoluene 4-Chlorotoluene Benzene Bromobenzene Bromochloromethane Bromodichloromethane Bromoform Bromomethane Carbon disulfide Carbon tetrachloride Chlorobenzene Chloroethane Chloroform Chloromethane cis-1,2-Dichloroethene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F2702 06/27/17 06/27/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/27/17 12:25 Analyzed: 06/27/17 12:41 ND ND ND ND ND ND ND ND ND ND ND 100 ND ND ND ND ND 50 ND ND ND ND ND ND 30 ND ND ND ND ND ND ND ND ND ND ND ND 20 20 24 20 20 20 20 20 20 20 20 20 45 20 20 20 20 20 20 20 20 20 20 20 20 20 90 20 20 150 20 20 20 21 20 20 20 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 20 of 41 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 16:06 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-101-25 3PV (3F72701-10) Air cis-1,3-Dichloropropene Dibromochloromethane Dibromomethane Dichlorodifluoromethane Ethylbenzene Hexachlorobutadiene Isopropylbenzene meta- and para-Xylenes Methylene Chloride Naphthalene n-Butylbenzene n-Propylbenzene ortho-Xylene p-Isopropyltoluene sec-Butylbenzene Styrene tert-Butylbenzene Tetrachloroethene Toluene trans-1,2-Dichloroethene trans-1,3-Dichloropropene Trichloroethene Trichlorofluoromethane Vinyl Chloride 2-Propanol Surrogate: Dibromofluoromethane Surrogate: Toluene-d8 Surrogate: 4-Bromofluorobenzene Diisopropyl Ether (DIPE) Ethyl tert-butyl ether (EtBE) Methyl tert-butyl ether (MtBE) tert-Amyl methyl ether (TAME) tert-Butanol (TBA) Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F2702 06/27/17 06/27/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/27/17 12:25 Analyzed: 06/27/17 12:41 ND ND ND ND 70 ND ND 280 ND ND ND 20 90 10 ND ND ND ND 180 ND ND ND ND ND ND 20 90 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 290 ND ND ND ND ND 109 % 93.1 % 101 % 1000 1000 1000 1000 20000 75-125 75-125 75-125 " 1 " " " " " " " " " " " " " " " " " " " " " " " " " " " " J The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 21 of 41 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 16:06 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-108-5 3PV (3F72701-11) Air 1,1,1,2-Tetrachloroethane 1,1,1-Trichloroethane 1,1,2,2-Tetrachloroethane 1,1,2-Trichloroethane 1,1,2-Trichloro-trifluoroethane 1,1-Dichloroethane 1,1-Dichloroethene 1,1-Dichloropropene 1,2,3-Trichlorobenzene 1,2,3-Trichloropropane 1,2,4-Trichlorobenzene 1,2,4-Trimethylbenzene 1,2-Dibromo-3-chloropropane 1,2-Dibromoethane 1,2-Dichlorobenzene 1,2-Dichloroethane 1,2-Dichloropropane 1,3,5-Trimethylbenzene 1,3-Dichlorobenzene 1,3-Dichloropropane 1,4-Dichlorobenzene 2,2-Dichloropropane 2-Chlorotoluene 4-Chlorotoluene Benzene Bromobenzene Bromochloromethane Bromodichloromethane Bromoform Bromomethane Carbon disulfide Carbon tetrachloride Chlorobenzene Chloroethane Chloroform Chloromethane cis-1,2-Dichloroethene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F2702 06/27/17 06/27/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/27/17 13:40 Analyzed: 06/27/17 13:55 ND ND ND ND ND ND ND ND ND ND ND 100 ND ND ND ND ND 40 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 20 20 24 20 20 20 20 20 20 20 20 20 45 20 20 20 20 20 20 20 20 20 20 20 20 20 90 20 20 150 20 20 20 21 20 20 20 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 22 of 41 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 16:06 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-108-5 3PV (3F72701-11) Air cis-1,3-Dichloropropene Dibromochloromethane Dibromomethane Dichlorodifluoromethane Ethylbenzene Hexachlorobutadiene Isopropylbenzene meta- and para-Xylenes Methylene Chloride Naphthalene n-Butylbenzene n-Propylbenzene ortho-Xylene p-Isopropyltoluene sec-Butylbenzene Styrene tert-Butylbenzene Tetrachloroethene Toluene trans-1,2-Dichloroethene trans-1,3-Dichloropropene Trichloroethene Trichlorofluoromethane Vinyl Chloride 2-Propanol Surrogate: Dibromofluoromethane Surrogate: Toluene-d8 Surrogate: 4-Bromofluorobenzene Diisopropyl Ether (DIPE) Ethyl tert-butyl ether (EtBE) Methyl tert-butyl ether (MtBE) tert-Amyl methyl ether (TAME) tert-Butanol (TBA) Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F2702 06/27/17 06/27/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/27/17 13:40 Analyzed: 06/27/17 13:55 ND ND ND ND 50 ND ND 190 ND ND ND 20 70 10 ND ND ND ND 100 ND ND ND ND ND ND 20 90 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 290 ND ND ND ND ND 111 % 90.4 % 101 % 1000 1000 1000 1000 20000 75-125 75-125 75-125 " 1 " " " " " " " " " " " " " " " " " " " " " " " " " " " " J The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 23 of 41 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 16:06 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-108-25 3PV (3F72701-12) Air 1,1,1,2-Tetrachloroethane 1,1,1-Trichloroethane 1,1,2,2-Tetrachloroethane 1,1,2-Trichloroethane 1,1,2-Trichloro-trifluoroethane 1,1-Dichloroethane 1,1-Dichloroethene 1,1-Dichloropropene 1,2,3-Trichlorobenzene 1,2,3-Trichloropropane 1,2,4-Trichlorobenzene 1,2,4-Trimethylbenzene 1,2-Dibromo-3-chloropropane 1,2-Dibromoethane 1,2-Dichlorobenzene 1,2-Dichloroethane 1,2-Dichloropropane 1,3,5-Trimethylbenzene 1,3-Dichlorobenzene 1,3-Dichloropropane 1,4-Dichlorobenzene 2,2-Dichloropropane 2-Chlorotoluene 4-Chlorotoluene Benzene Bromobenzene Bromochloromethane Bromodichloromethane Bromoform Bromomethane Carbon disulfide Carbon tetrachloride Chlorobenzene Chloroethane Chloroform Chloromethane cis-1,2-Dichloroethene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F2702 06/27/17 06/27/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/27/17 14:10 Analyzed: 06/27/17 14:23 ND ND ND ND ND ND ND ND ND ND ND 40 ND ND ND ND ND 10 ND ND ND ND ND ND 10 ND ND ND ND ND ND ND ND ND ND ND ND 20 20 24 20 20 20 20 20 20 20 20 20 45 20 20 20 20 20 20 20 20 20 20 20 20 20 90 20 20 150 20 20 20 21 20 20 20 J J The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 24 of 41 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 16:06 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-108-25 3PV (3F72701-12) Air cis-1,3-Dichloropropene Dibromochloromethane Dibromomethane Dichlorodifluoromethane Ethylbenzene Hexachlorobutadiene Isopropylbenzene meta- and para-Xylenes Methylene Chloride Naphthalene n-Butylbenzene n-Propylbenzene ortho-Xylene p-Isopropyltoluene sec-Butylbenzene Styrene tert-Butylbenzene Tetrachloroethene Toluene trans-1,2-Dichloroethene trans-1,3-Dichloropropene Trichloroethene Trichlorofluoromethane Vinyl Chloride 2-Propanol Surrogate: Dibromofluoromethane Surrogate: Toluene-d8 Surrogate: 4-Bromofluorobenzene Diisopropyl Ether (DIPE) Ethyl tert-butyl ether (EtBE) Methyl tert-butyl ether (MtBE) tert-Amyl methyl ether (TAME) tert-Butanol (TBA) Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F2702 06/27/17 06/27/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/27/17 14:10 Analyzed: 06/27/17 14:23 ND ND ND ND 10 ND ND 50 ND ND ND ND 20 ND ND ND ND ND 30 ND ND ND 10 ND ND 20 90 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 290 ND ND ND ND ND 107 % 92.4 % 99.6 % 1000 1000 1000 1000 20000 " " 75-125 75-125 75-125 " " " " " " " " " " " " " " " " " 1 " " " " " " " " " " " " " " " " " " " " " " " " " " " " J J The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 25 of 41 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 16:06 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-94-5 3PV (3F72701-13) Air 1,1,1,2-Tetrachloroethane 1,1,1-Trichloroethane 1,1,2,2-Tetrachloroethane 1,1,2-Trichloroethane 1,1,2-Trichloro-trifluoroethane 1,1-Dichloroethane 1,1-Dichloroethene 1,1-Dichloropropene 1,2,3-Trichlorobenzene 1,2,3-Trichloropropane 1,2,4-Trichlorobenzene 1,2,4-Trimethylbenzene 1,2-Dibromo-3-chloropropane 1,2-Dibromoethane 1,2-Dichlorobenzene 1,2-Dichloroethane 1,2-Dichloropropane 1,3,5-Trimethylbenzene 1,3-Dichlorobenzene 1,3-Dichloropropane 1,4-Dichlorobenzene 2,2-Dichloropropane 2-Chlorotoluene 4-Chlorotoluene Benzene Bromobenzene Bromochloromethane Bromodichloromethane Bromoform Bromomethane Carbon disulfide Carbon tetrachloride Chlorobenzene Chloroethane Chloroform Chloromethane cis-1,2-Dichloroethene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F2702 06/27/17 06/27/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/27/17 14:40 Analyzed: 06/27/17 14:52 ND ND ND ND ND ND ND ND ND ND ND 60 ND ND ND ND ND 20 ND ND ND ND ND ND 20 ND ND ND ND ND ND ND ND ND ND ND ND 20 20 24 20 20 20 20 20 20 20 20 20 45 20 20 20 20 20 20 20 20 20 20 20 20 20 90 20 20 150 20 20 20 21 20 20 20 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 26 of 41 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 16:06 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-94-5 3PV (3F72701-13) Air cis-1,3-Dichloropropene Dibromochloromethane Dibromomethane Dichlorodifluoromethane Ethylbenzene Hexachlorobutadiene Isopropylbenzene meta- and para-Xylenes Methylene Chloride Naphthalene n-Butylbenzene n-Propylbenzene ortho-Xylene p-Isopropyltoluene sec-Butylbenzene Styrene tert-Butylbenzene Tetrachloroethene Toluene trans-1,2-Dichloroethene trans-1,3-Dichloropropene Trichloroethene Trichlorofluoromethane Vinyl Chloride 2-Propanol Surrogate: Dibromofluoromethane Surrogate: Toluene-d8 Surrogate: 4-Bromofluorobenzene Diisopropyl Ether (DIPE) Ethyl tert-butyl ether (EtBE) Methyl tert-butyl ether (MtBE) tert-Amyl methyl ether (TAME) tert-Butanol (TBA) Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F2702 06/27/17 06/27/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/27/17 14:40 Analyzed: 06/27/17 14:52 ND ND ND ND 40 ND ND 160 ND ND ND 10 50 ND ND ND ND ND 120 ND ND ND ND ND ND 20 90 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 290 ND ND ND ND ND 110 % 92.6 % 99.4 % 1000 1000 1000 1000 20000 75-125 75-125 75-125 " 1 " " " " " " " " " " " " " " " " " " " " " " " " " " " " J The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 27 of 41 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 16:06 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-94-25 3PV (3F72701-14) Air 1,1,1,2-Tetrachloroethane 1,1,1-Trichloroethane 1,1,2,2-Tetrachloroethane 1,1,2-Trichloroethane 1,1,2-Trichloro-trifluoroethane 1,1-Dichloroethane 1,1-Dichloroethene 1,1-Dichloropropene 1,2,3-Trichlorobenzene 1,2,3-Trichloropropane 1,2,4-Trichlorobenzene 1,2,4-Trimethylbenzene 1,2-Dibromo-3-chloropropane 1,2-Dibromoethane 1,2-Dichlorobenzene 1,2-Dichloroethane 1,2-Dichloropropane 1,3,5-Trimethylbenzene 1,3-Dichlorobenzene 1,3-Dichloropropane 1,4-Dichlorobenzene 2,2-Dichloropropane 2-Chlorotoluene 4-Chlorotoluene Benzene Bromobenzene Bromochloromethane Bromodichloromethane Bromoform Bromomethane Carbon disulfide Carbon tetrachloride Chlorobenzene Chloroethane Chloroform Chloromethane cis-1,2-Dichloroethene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F2702 06/27/17 06/27/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/27/17 15:05 Analyzed: 06/27/17 15:20 ND ND ND ND ND ND ND ND ND ND ND 50 ND ND ND ND ND 20 ND ND ND ND ND ND 30 ND ND ND ND ND 140 ND ND ND ND ND ND 20 20 24 20 20 20 20 20 20 20 20 20 45 20 20 20 20 20 20 20 20 20 20 20 20 20 90 20 20 150 20 20 20 21 20 20 20 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 28 of 41 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 16:06 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-94-25 3PV (3F72701-14) Air cis-1,3-Dichloropropene Dibromochloromethane Dibromomethane Dichlorodifluoromethane Ethylbenzene Hexachlorobutadiene Isopropylbenzene meta- and para-Xylenes Methylene Chloride Naphthalene n-Butylbenzene n-Propylbenzene ortho-Xylene p-Isopropyltoluene sec-Butylbenzene Styrene tert-Butylbenzene Tetrachloroethene Toluene trans-1,2-Dichloroethene trans-1,3-Dichloropropene Trichloroethene Trichlorofluoromethane Vinyl Chloride 2-Propanol Surrogate: Dibromofluoromethane Surrogate: Toluene-d8 Surrogate: 4-Bromofluorobenzene Diisopropyl Ether (DIPE) Ethyl tert-butyl ether (EtBE) Methyl tert-butyl ether (MtBE) tert-Amyl methyl ether (TAME) tert-Butanol (TBA) Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F2702 06/27/17 06/27/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/27/17 15:05 Analyzed: 06/27/17 15:20 ND ND ND ND 30 ND ND 130 ND ND ND ND 30 ND ND ND ND ND 100 ND ND ND ND ND ND 20 90 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 290 ND ND ND ND ND 120 % 87.1 % 107 % 1000 1000 1000 1000 20000 75-125 75-125 75-125 " 1 " " " " " " " " " " " " " " " " " " " " " " " " " " " " The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 29 of 41 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 16:06 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-126-5 3PV (3F72701-15) Air 1,1,1,2-Tetrachloroethane 1,1,1-Trichloroethane 1,1,2,2-Tetrachloroethane 1,1,2-Trichloroethane 1,1,2-Trichloro-trifluoroethane 1,1-Dichloroethane 1,1-Dichloroethene 1,1-Dichloropropene 1,2,3-Trichlorobenzene 1,2,3-Trichloropropane 1,2,4-Trichlorobenzene 1,2,4-Trimethylbenzene 1,2-Dibromo-3-chloropropane 1,2-Dibromoethane 1,2-Dichlorobenzene 1,2-Dichloroethane 1,2-Dichloropropane 1,3,5-Trimethylbenzene 1,3-Dichlorobenzene 1,3-Dichloropropane 1,4-Dichlorobenzene 2,2-Dichloropropane 2-Chlorotoluene 4-Chlorotoluene Benzene Bromobenzene Bromochloromethane Bromodichloromethane Bromoform Bromomethane Carbon disulfide Carbon tetrachloride Chlorobenzene Chloroethane Chloroform Chloromethane cis-1,2-Dichloroethene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F2702 06/27/17 06/27/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/27/17 15:35 Analyzed: 06/27/17 15:49 ND ND ND ND ND ND ND ND ND ND ND 480 ND ND ND ND ND 240 ND ND ND ND ND ND 100 ND ND ND ND ND ND ND ND ND ND ND ND 20 20 24 20 20 20 20 20 20 20 20 20 45 20 20 20 20 20 20 20 20 20 20 20 20 20 90 20 20 150 20 20 20 21 20 20 20 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 30 of 41 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 16:06 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-126-5 3PV (3F72701-15) Air cis-1,3-Dichloropropene Dibromochloromethane Dibromomethane Dichlorodifluoromethane Ethylbenzene Hexachlorobutadiene Isopropylbenzene meta- and para-Xylenes Methylene Chloride Naphthalene n-Butylbenzene n-Propylbenzene ortho-Xylene p-Isopropyltoluene sec-Butylbenzene Styrene tert-Butylbenzene Tetrachloroethene Toluene trans-1,2-Dichloroethene trans-1,3-Dichloropropene Trichloroethene Trichlorofluoromethane Vinyl Chloride 2-Propanol Surrogate: Dibromofluoromethane Surrogate: Toluene-d8 Surrogate: 4-Bromofluorobenzene Diisopropyl Ether (DIPE) Ethyl tert-butyl ether (EtBE) Methyl tert-butyl ether (MtBE) tert-Amyl methyl ether (TAME) tert-Butanol (TBA) Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F2702 06/27/17 06/27/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/27/17 15:35 Analyzed: 06/27/17 15:49 ND ND ND ND 240 ND 30 970 ND ND 20 80 290 20 ND ND ND ND 700 ND ND ND ND ND ND 20 90 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 290 ND ND ND ND ND 112 % 92.7 % 101 % 1000 1000 1000 1000 20000 75-125 75-125 75-125 " 1 " " " " " " " " " " " " " " " " " " " " " " " " " " " " The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 31 of 41 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 16:06 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-126-25 3PV (3F72701-16) Air 1,1,1,2-Tetrachloroethane 1,1,1-Trichloroethane 1,1,2,2-Tetrachloroethane 1,1,2-Trichloroethane 1,1,2-Trichloro-trifluoroethane 1,1-Dichloroethane 1,1-Dichloroethene 1,1-Dichloropropene 1,2,3-Trichlorobenzene 1,2,3-Trichloropropane 1,2,4-Trichlorobenzene 1,2,4-Trimethylbenzene 1,2-Dibromo-3-chloropropane 1,2-Dibromoethane 1,2-Dichlorobenzene 1,2-Dichloroethane 1,2-Dichloropropane 1,3,5-Trimethylbenzene 1,3-Dichlorobenzene 1,3-Dichloropropane 1,4-Dichlorobenzene 2,2-Dichloropropane 2-Chlorotoluene 4-Chlorotoluene Benzene Bromobenzene Bromochloromethane Bromodichloromethane Bromoform Bromomethane Carbon disulfide Carbon tetrachloride Chlorobenzene Chloroethane Chloroform Chloromethane cis-1,2-Dichloroethene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F2702 06/27/17 06/27/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/27/17 16:05 Analyzed: 06/27/17 16:17 ND ND ND ND ND ND ND ND ND ND ND 260 ND ND ND ND ND 120 ND ND ND ND ND ND 130 ND ND ND ND ND 60 ND ND ND ND ND ND 20 20 24 20 20 20 20 20 20 20 20 20 45 20 20 20 20 20 20 20 20 20 20 20 20 20 90 20 20 150 20 20 20 21 20 20 20 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 32 of 41 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 16:06 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-126-25 3PV (3F72701-16) Air cis-1,3-Dichloropropene Dibromochloromethane Dibromomethane Dichlorodifluoromethane Ethylbenzene Hexachlorobutadiene Isopropylbenzene meta- and para-Xylenes Methylene Chloride Naphthalene n-Butylbenzene n-Propylbenzene ortho-Xylene p-Isopropyltoluene sec-Butylbenzene Styrene tert-Butylbenzene Tetrachloroethene Toluene trans-1,2-Dichloroethene trans-1,3-Dichloropropene Trichloroethene Trichlorofluoromethane Vinyl Chloride 2-Propanol Surrogate: Dibromofluoromethane Surrogate: Toluene-d8 Surrogate: 4-Bromofluorobenzene Diisopropyl Ether (DIPE) Ethyl tert-butyl ether (EtBE) Methyl tert-butyl ether (MtBE) tert-Amyl methyl ether (TAME) tert-Butanol (TBA) Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F2702 06/27/17 06/27/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/27/17 16:05 Analyzed: 06/27/17 16:17 ND ND ND ND 140 ND 10 590 ND ND ND 40 160 ND ND ND ND ND 580 ND ND ND ND ND ND 20 90 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 290 ND ND ND ND ND 118 % 94.2 % 103 % 1000 1000 1000 1000 20000 75-125 75-125 75-125 " 1 " " " " " " " " " " " " " " " " " " " " " " " " " " " " J The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 33 of 41 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 16:06 Volatile Organic Compounds - Quality Control Environmental Support Technologies Result Reporting Limit 1,1,1,2-Tetrachloroethane ND 20 Diisopropyl Ether (DIPE) ND 1000 " 1,1,1-Trichloroethane ND 20 " Ethyl tert-butyl ether (EtBE) ND 1000 " 1,1,2,2-Tetrachloroethane ND 24 " Methyl tert-butyl ether (MtBE) ND 1000 " 1,1,2-Trichloroethane ND 20 " tert-Amyl methyl ether (TAME) ND 1000 " 1,1,2-Trichloro-trifluoroethane ND 20 " tert-Butanol (TBA) ND 20000 " 1,1-Dichloroethane ND 20 " 1,1-Dichloroethene ND 20 " 1,1-Dichloropropene ND 20 " 1,2,3-Trichlorobenzene ND 20 " 1,2,3-Trichloropropane ND 20 " 1,2,4-Trichlorobenzene ND 20 " 1,2,4-Trimethylbenzene ND 20 " 1,2-Dibromo-3-chloropropane ND 45 " 1,2-Dibromoethane ND 20 " 1,2-Dichlorobenzene ND 20 " 1,2-Dichloroethane ND 20 " 1,2-Dichloropropane ND 20 " 1,3,5-Trimethylbenzene ND 20 " 1,3-Dichlorobenzene ND 20 " 1,3-Dichloropropane ND 20 " 1,4-Dichlorobenzene ND 20 " 2,2-Dichloropropane ND 20 " 2-Chlorotoluene ND 20 " 4-Chlorotoluene ND 20 " Benzene ND 20 " Bromobenzene ND 20 " Bromochloromethane ND 90 " Bromodichloromethane ND 20 " Analyte Units Spike Level Source Result %REC %REC Limits RPD RPD Limit Notes Batch 37F2702 - Volatiles Blank (37F2702-BLK1) Prepared & Analyzed: 06/27/17 ug/m³ Air The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 34 of 41 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 16:06 Volatile Organic Compounds - Quality Control Environmental Support Technologies Result Reporting Limit Bromoform ND 20 ug/m³ Air Bromomethane ND 150 " Carbon disulfide ND 20 " Carbon tetrachloride ND 20 " Chlorobenzene ND 20 " Chloroethane ND 21 " Chloroform ND 20 " Chloromethane ND 20 " cis-1,2-Dichloroethene ND 20 " cis-1,3-Dichloropropene ND 20 " Dibromochloromethane ND 90 " Dibromomethane ND 20 " Dichlorodifluoromethane ND 20 " Ethylbenzene ND 20 " Hexachlorobutadiene ND 20 " Isopropylbenzene ND 20 " meta- and para-Xylenes ND 20 " Methylene Chloride ND 20 " Naphthalene ND 20 " n-Butylbenzene ND 20 " n-Propylbenzene ND 20 " ortho-Xylene ND 20 " p-Isopropyltoluene ND 20 " sec-Butylbenzene ND 20 " Styrene ND 20 " tert-Butylbenzene ND 20 " Tetrachloroethene ND 20 " 10.0 20 " trans-1,2-Dichloroethene ND 20 " trans-1,3-Dichloropropene ND 20 " Trichloroethene ND 20 " Trichlorofluoromethane ND 20 " Vinyl Chloride ND 20 " Analyte Units Spike Level Source Result %REC %REC Limits RPD RPD Limit Notes Batch 37F2702 - Volatiles Blank (37F2702-BLK1) Toluene Prepared & Analyzed: 06/27/17 J The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 35 of 41 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 16:06 Volatile Organic Compounds - Quality Control Environmental Support Technologies Analyte Result Reporting Limit ND 290 Units Spike Level Source Result %REC %REC Limits RPD RPD Limit Notes Batch 37F2702 - Volatiles Blank (37F2702-BLK1) 2-Propanol Prepared & Analyzed: 06/27/17 ug/m³ Air Surrogate: Dibromofluoromethane 2770 " 2500 111 75-125 Surrogate: Toluene-d8 2330 " 2500 93.4 75-125 Surrogate: 4-Bromofluorobenzene 2530 " 2500 101 75-125 LCS (37F2702-BS1) Prepared & Analyzed: 06/27/17 Diisopropyl Ether (DIPE) 1390 1000 ug/m³ Air 1,1,1,2-Tetrachloroethane 1150 1250 111 85-137 20 " 1250 92.0 Ethyl tert-butyl ether (EtBE) 75-136 1180 1000 " 1250 94.4 85-130 1,1,1-Trichloroethane 1160 20 " 1250 92.8 73-134 1,1,2,2-Tetrachloroethane 1170 24 " 1250 93.6 56-149 Methyl tert-butyl ether (MtBE) 2020 1000 " 2500 80.8 80-130 tert-Amyl methyl ether (TAME) 1140 1000 " 1250 91.2 85-125 1,1,2-Trichloroethane 1230 20 " 1250 98.4 67-137 11000 20000 " 12500 88.1 61-159 1,1,2-Trichloro-trifluoroethane 1310 20 " 1250 105 83-125 1,1-Dichloroethane 1190 20 " 1250 95.2 80-121 1,1-Dichloroethene 1270 20 " 1250 102 73-137 1,1-Dichloropropene 1280 20 " 1250 102 77-122 1,2,3-Trichlorobenzene 1300 20 " 1250 104 67-133 1,2,3-Trichloropropane 1130 20 " 1250 90.4 56-145 1,2,4-Trichlorobenzene 1250 20 " 1250 100 71-135 1,2,4-Trimethylbenzene 1200 20 " 1250 96.0 76-140 1,2-Dibromo-3-chloropropane 1170 45 " 1250 93.6 43-158 1,2-Dibromoethane 1380 20 " 1250 110 80-130 1,2-Dichlorobenzene 1340 20 " 1250 107 67-139 1,2-Dichloroethane 1180 20 " 1250 94.4 75-131 1,2-Dichloropropane 1220 20 " 1250 97.6 62-144 1,3,5-Trimethylbenzene 1320 20 " 1250 106 78-125 1,3-Dichlorobenzene 1220 20 " 1250 97.6 82-120 1,3-Dichloropropane 1330 20 " 1250 106 61-145 1,4-Dichlorobenzene 1230 20 " 1250 98.4 84-120 2,2-Dichloropropane 1140 20 " 1250 91.2 68-134 2-Chlorotoluene 1300 20 " 1250 104 65-127 tert-Butanol (TBA) J The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 36 of 41 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 16:06 Volatile Organic Compounds - Quality Control Environmental Support Technologies Result Reporting Limit 4-Chlorotoluene 1330 20 ug/m³ Air 1250 106 65-127 Benzene 1150 20 " 1250 92.0 79-118 Bromobenzene 1230 20 " 1250 98.4 69-140 Bromochloromethane 1300 90 " 1250 104 61-141 Bromodichloromethane 1130 20 " 1250 90.4 67-137 Bromoform 1110 20 " 1250 88.8 57-152 Bromomethane 1360 150 " 1250 109 51-148 Carbon disulfide 1220 20 " 1250 97.6 61-140 Carbon tetrachloride 1170 20 " 1250 93.6 74-143 Chlorobenzene 1290 20 " 1250 103 67-140 Chloroethane 1370 21 " 1250 110 60-137 Chloroform 1200 20 " 1250 96.0 82-140 Chloromethane 1130 20 " 1250 90.4 58-139 cis-1,2-Dichloroethene 1310 20 " 1250 105 85-116 cis-1,3-Dichloropropene 1070 20 " 1250 85.6 66-142 Dibromochloromethane 1310 90 " 1250 105 61-140 Dibromomethane 1220 20 " 1250 97.6 66-143 Dichlorodifluoromethane 1330 20 " 1250 106 47-129 Ethylbenzene 1280 20 " 1250 102 70-125 Hexachlorobutadiene 1370 20 " 1250 110 71-145 Isopropylbenzene 1140 20 " 1250 91.2 85-116 meta- and para-Xylenes 2510 20 " 2500 100 83-115 Methylene Chloride 1340 20 " 1250 107 81-126 Naphthalene 1290 20 " 1250 103 56-140 n-Butylbenzene 1240 20 " 1250 99.2 60-149 n-Propylbenzene 1290 20 " 1250 103 77-129 ortho-Xylene 1190 20 " 1250 95.2 85-115 p-Isopropyltoluene 1340 20 " 1250 107 63-144 sec-Butylbenzene 1360 20 " 1250 109 68-128 Styrene 1170 20 " 1250 93.6 65-142 tert-Butylbenzene 1300 20 " 1250 104 60-128 Tetrachloroethene 1300 20 " 1250 104 60-144 Toluene 1340 20 " 1250 107 70-115 Analyte Units Spike Level Source Result %REC %REC Limits RPD RPD Limit Notes Batch 37F2702 - Volatiles LCS (37F2702-BS1) Prepared & Analyzed: 06/27/17 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 37 of 41 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 16:06 Volatile Organic Compounds - Quality Control Environmental Support Technologies Result Reporting Limit trans-1,2-Dichloroethene 1390 20 ug/m³ Air 1250 111 72-133 trans-1,3-Dichloropropene 1090 20 " 1250 87.2 68-140 Trichloroethene 1330 20 " 1250 106 68-132 Trichlorofluoromethane 1150 20 " 1250 92.0 62-144 Vinyl Chloride 1240 20 " 1250 99.2 66-137 Analyte Units Spike Level Source Result %REC %REC Limits RPD RPD Limit Notes Batch 37F2702 - Volatiles LCS (37F2702-BS1) Prepared & Analyzed: 06/27/17 Surrogate: Dibromofluoromethane 12100 " 12500 96.9 75-125 Surrogate: Toluene-d8 12100 " 12500 96.6 75-125 Surrogate: 4-Bromofluorobenzene 13000 " 12500 104 75-125 Duplicate (37F2702-DUP1) Source: 3F72701-03 Diisopropyl Ether (DIPE) ND 1000 1,1,1,2-Tetrachloroethane ND 1,1,1-Trichloroethane Prepared & Analyzed: 06/27/17 ug/m³ Air ND 20 20 " ND 50 ND 20 " ND 50 Ethyl tert-butyl ether (EtBE) ND 1000 " ND 20 1,1,2,2-Tetrachloroethane ND 24 " ND 50 Methyl tert-butyl ether (MtBE) ND 1000 " ND 20 1,1,2-Trichloroethane ND 20 " ND 50 tert-Amyl methyl ether (TAME) ND 1000 " ND 20 1,1,2-Trichloro-trifluoroethane ND 20 " ND 50 tert-Butanol (TBA) ND 20000 " ND 20 1,1-Dichloroethane ND 20 " ND 50 1,1-Dichloroethene ND 20 " ND 50 1,1-Dichloropropene ND 20 " ND 50 1,2,3-Trichlorobenzene ND 20 " ND 50 1,2,3-Trichloropropane ND 20 " ND 50 1,2,4-Trichlorobenzene ND 20 " ND 1,2,4-Trimethylbenzene 180 20 " 200 1,2-Dibromo-3-chloropropane ND 45 " ND 50 1,2-Dibromoethane ND 20 " ND 50 1,2-Dichlorobenzene ND 20 " ND 50 1,2-Dichloroethane ND 20 " ND 50 1,2-Dichloropropane ND 20 " ND 70.0 20 " 80.0 ND 20 " ND 1,3,5-Trimethylbenzene 1,3-Dichlorobenzene 50 10.5 50 50 13.3 50 50 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 38 of 41 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 16:06 Volatile Organic Compounds - Quality Control Environmental Support Technologies Analyte Result Reporting Limit Units Spike Level Source Result %REC %REC Limits RPD RPD Limit Notes Batch 37F2702 - Volatiles Duplicate (37F2702-DUP1) Source: 3F72701-03 Prepared & Analyzed: 06/27/17 1,3-Dichloropropane ND 20 ug/m³ Air ND 50 1,4-Dichlorobenzene ND 20 " ND 50 2,2-Dichloropropane ND 20 " ND 50 2-Chlorotoluene ND 20 " ND 50 4-Chlorotoluene ND 20 " ND 20.0 20 " 20.0 Bromobenzene ND 20 " ND 50 Bromochloromethane ND 90 " ND 50 Bromodichloromethane ND 20 " ND 50 Bromoform ND 20 " ND 50 Bromomethane ND 150 " ND 50 Carbon disulfide ND 20 " ND 50 Carbon tetrachloride ND 20 " ND 50 Chlorobenzene ND 20 " ND 50 Chloroethane ND 21 " ND 50 Chloroform ND 20 " ND 50 Chloromethane ND 20 " ND 50 cis-1,2-Dichloroethene ND 20 " ND 50 cis-1,3-Dichloropropene ND 20 " ND 50 Dibromochloromethane ND 90 " ND 50 Dibromomethane ND 20 " ND 50 Dichlorodifluoromethane ND 20 " ND Ethylbenzene 120 20 " 140 Hexachlorobutadiene ND 20 " ND Isopropylbenzene 10.0 20 " ND meta- and para-Xylenes 500 20 " 580 Methylene Chloride ND 20 " ND 50 Naphthalene ND 20 " ND 50 n-Butylbenzene ND 20 " ND n-Propylbenzene 30.0 20 " 40.0 28.6 50 ortho-Xylene 180 20 " 200 10.5 50 p-Isopropyltoluene 20.0 20 " 20.0 0.00 50 sec-Butylbenzene ND 20 " ND Benzene 50 0.00 50 50 15.4 50 50 50 14.8 J 50 50 50 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 39 of 41 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 16:06 Volatile Organic Compounds - Quality Control Environmental Support Technologies Analyte Result Reporting Limit Units Spike Level Source Result %REC %REC Limits RPD RPD Limit Notes Batch 37F2702 - Volatiles Duplicate (37F2702-DUP1) Source: 3F72701-03 Prepared & Analyzed: 06/27/17 Styrene ND 20 ug/m³ Air ND 50 tert-Butylbenzene ND 20 " ND 50 Tetrachloroethene ND 20 " ND Toluene 320 20 " 370 trans-1,2-Dichloroethene ND 20 " ND 50 trans-1,3-Dichloropropene ND 20 " ND 50 Trichloroethene ND 20 " ND 10.0 20 " 20.0 Trichlorofluoromethane 50 14.5 50 50 66.7 50 Vinyl Chloride ND 20 " ND 50 2-Propanol ND 290 " ND 200 Surrogate: Dibromofluoromethane 2560 " 2500 102 75-125 Surrogate: Toluene-d8 2360 " 2500 94.2 75-125 Surrogate: 4-Bromofluorobenzene 2530 " 2500 101 75-125 QR-04, J The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 40 of 41 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 16:06 Notes and Definitions QR-04 The RPD result for this analyte in the sample exceeded the QC control limits; however, the RPD for other analytes were within the QC control limits. J Detected but below the Reporting Limit; therefore, result is an estimated concentration (CLP J-Flag). DET Analyte DETECTED ND Analyte NOT DETECTED at or above the reporting limit NR Not Reported dry Sample results reported on a dry weight basis RPD Relative Percent Difference The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 41 of 41 Items for Project Manager Review LabNumber Analysis 3F72701-04 OXY SG Analyte Exception 3F72701-01 OXY SG Missing Dibromofluoromethane 3F72701-16 OXY SG Missing 4-Bromofluorobenzene 3F72701-15 OXY SG Missing 4-Bromofluorobenzene 3F72701-14 OXY SG Missing 4-Bromofluorobenzene 3F72701-13 OXY SG Missing 4-Bromofluorobenzene 3F72701-12 OXY SG Missing 4-Bromofluorobenzene 3F72701-11 OXY SG Missing 4-Bromofluorobenzene 3F72701-10 OXY SG Missing 4-Bromofluorobenzene 3F72701-09 OXY SG Missing 4-Bromofluorobenzene 3F72701-08 OXY SG Missing 4-Bromofluorobenzene 3F72701-07 OXY SG Missing 4-Bromofluorobenzene 3F72701-03 OXY SG Missing Dibromofluoromethane 3F72701-05 OXY SG Missing 4-Bromofluorobenzene 3F72701-04 OXY SG Missing Dibromofluoromethane 3F72701-03 OXY SG Missing 4-Bromofluorobenzene 3F72701-02 OXY SG Missing 4-Bromofluorobenzene 3F72701-01 OXY SG 37F2702-DUP1 8260B (SG) / CHHSLS RES Trichlorofluoromethane 37F2702-DUP1 8260B (SG) / CHHSLS RES Trichlorofluoromethane QR-04: The RPD result for this analyte in the sample exceeded the QC control limits; however, the RP Exceeds RPD limit OXY SG (Air) Special Units Used 8260B (SG) / CHHSLS RES (Air) Special Units Used OXY SG (Air) J-Flags used 8260B (SG) / CHHSLS RES (Air) J-Flags used OXY SG (Air) Result calculations based on MDL 8260B (SG) / CHHSLS RES (Air) Result calculations based on MDL Missing 4-Bromofluorobenzene This is a modified report Missing 4-Bromofluorobenzene VERSION 5.8.5:2735 3F72701-06 OXY SG Missing 4-Bromofluorobenzene 3F72701-01 OXY SG Missing Toluene-d8 3F72701-15 OXY SG Missing Toluene-d8 3F72701-14 OXY SG Missing Toluene-d8 3F72701-13 OXY SG Missing Toluene-d8 3F72701-12 OXY SG Missing Toluene-d8 3F72701-11 OXY SG Missing Toluene-d8 3F72701-10 OXY SG Missing Toluene-d8 3F72701-09 OXY SG Missing Toluene-d8 3F72701-08 OXY SG Missing Toluene-d8 3F72701-07 OXY SG Missing Toluene-d8 3F72701-06 OXY SG Missing Toluene-d8 3F72701-05 OXY SG Missing Toluene-d8 3F72701-04 OXY SG Missing Toluene-d8 3F72701-02 OXY SG Missing Dibromofluoromethane 3F72701-02 OXY SG Missing Toluene-d8 3F72701-16 OXY SG Missing Toluene-d8 3F72701-16 OXY SG Missing Dibromofluoromethane 3F72701-15 OXY SG Missing Dibromofluoromethane 3F72701-14 OXY SG Missing Dibromofluoromethane June 29, 2017 Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 RE: Otay Ranch Village 3 Chula Vista, CA. 91911 Enclosed are the results of analyses for soil gas samples received by Environmental Support Technologies laboratory on 06/28/17 13:07. The analyses were performed according to the prescribed method as outlined by EPA 8260B. A shut in test was performed, leak test was performed, equipment blank was run, and selected purge volume was 3PV. If you have any questions concerning this report, please feel free to contact Project Manager. Sincerely, Ashley Flores Ashley Flores Project Manager Environmental Support Technologies laboratories are certified by the California Department of Health Services (CDHS), Environmental Laboratory Accreditation Program (ELAP) No's. 2772, 2773, and 2767. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann Reported: 29-Jun-17 16:42 ANALYTICAL REPORT FOR SAMPLES Sample ID Laboratory ID Matrix Date Sampled Date Analyzed Equipment Blank 3F72801-01 Air 28-Jun-17 07:55 28-Jun-17 08:08 Material Blank 3F72801-02 Air 28-Jun-17 08:20 28-Jun-17 08:36 SGP-253-5 3PV 3F72801-03 Air 28-Jun-17 08:55 28-Jun-17 09:09 SGP-253-22 3PV 3F72801-04 Air 28-Jun-17 09:50 28-Jun-17 10:06 SGP-711-5 3PV 3F72801-05 Air 28-Jun-17 10:20 28-Jun-17 10:34 SGP-711-8 3PV 3F72801-06 Air 28-Jun-17 10:50 28-Jun-17 11:06 SGP-699-5 3PV 3F72801-07 Air 28-Jun-17 11:20 28-Jun-17 11:34 SGP-699-25 3PV 3F72801-08 Air 28-Jun-17 11:50 28-Jun-17 12:02 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 1 of 25 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 16:42 Volatile Organic Compounds Environmental Support Technologies Analyte Equipment Blank (3F72801-01) Air 1,1,1,2-Tetrachloroethane 1,1,1-Trichloroethane 1,1,2,2-Tetrachloroethane 1,1,2-Trichloroethane 1,1,2-Trichloro-trifluoroethane 1,1-Dichloroethane 1,1-Dichloroethene 1,1-Dichloropropene 1,2,3-Trichlorobenzene 1,2,3-Trichloropropane 1,2,4-Trichlorobenzene 1,2,4-Trimethylbenzene 1,2-Dibromo-3-chloropropane 1,2-Dibromoethane 1,2-Dichlorobenzene 1,2-Dichloroethane 1,2-Dichloropropane 1,3,5-Trimethylbenzene 1,3-Dichlorobenzene 1,3-Dichloropropane 1,4-Dichlorobenzene 2,2-Dichloropropane 2-Chlorotoluene 4-Chlorotoluene Benzene Bromobenzene Bromochloromethane Bromodichloromethane Bromoform Bromomethane Carbon disulfide Carbon tetrachloride Chlorobenzene Chloroethane Chloroform Chloromethane cis-1,2-Dichloroethene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F2802 06/28/17 06/28/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/28/17 07:55 Analyzed: 06/28/17 08:08 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 20 20 24 20 20 20 20 20 20 20 20 20 45 20 20 20 20 20 20 20 20 20 20 20 20 20 90 20 20 150 20 20 20 21 20 20 20 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 2 of 25 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 16:42 Volatile Organic Compounds Environmental Support Technologies Analyte Equipment Blank (3F72801-01) Air cis-1,3-Dichloropropene Dibromochloromethane Dibromomethane Dichlorodifluoromethane Ethylbenzene Hexachlorobutadiene Isopropylbenzene meta- and para-Xylenes Methylene Chloride Naphthalene n-Butylbenzene n-Propylbenzene ortho-Xylene p-Isopropyltoluene sec-Butylbenzene Styrene tert-Butylbenzene Tetrachloroethene Toluene trans-1,2-Dichloroethene trans-1,3-Dichloropropene Trichloroethene Trichlorofluoromethane Vinyl Chloride 2-Propanol Surrogate: Dibromofluoromethane Surrogate: Toluene-d8 Surrogate: 4-Bromofluorobenzene Diisopropyl Ether (DIPE) Ethyl tert-butyl ether (EtBE) Methyl tert-butyl ether (MtBE) tert-Amyl methyl ether (TAME) tert-Butanol (TBA) Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F2802 06/28/17 06/28/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/28/17 07:55 Analyzed: 06/28/17 08:08 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 20 90 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 290 ND ND ND ND ND 107 % 91.6 % 99.8 % 1000 1000 1000 1000 20000 75-125 75-125 75-125 " 1 " " " " " " " " " " " " " " " " " " " " " " " " " " " " The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 3 of 25 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 16:42 Volatile Organic Compounds Environmental Support Technologies Analyte Material Blank (3F72801-02) Air 1,1,1,2-Tetrachloroethane 1,1,1-Trichloroethane 1,1,2,2-Tetrachloroethane 1,1,2-Trichloroethane 1,1,2-Trichloro-trifluoroethane 1,1-Dichloroethane 1,1-Dichloroethene 1,1-Dichloropropene 1,2,3-Trichlorobenzene 1,2,3-Trichloropropane 1,2,4-Trichlorobenzene 1,2,4-Trimethylbenzene 1,2-Dibromo-3-chloropropane 1,2-Dibromoethane 1,2-Dichlorobenzene 1,2-Dichloroethane 1,2-Dichloropropane 1,3,5-Trimethylbenzene 1,3-Dichlorobenzene 1,3-Dichloropropane 1,4-Dichlorobenzene 2,2-Dichloropropane 2-Chlorotoluene 4-Chlorotoluene Benzene Bromobenzene Bromochloromethane Bromodichloromethane Bromoform Bromomethane Carbon disulfide Carbon tetrachloride Chlorobenzene Chloroethane Chloroform Chloromethane cis-1,2-Dichloroethene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F2802 06/28/17 06/28/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/28/17 08:20 Analyzed: 06/28/17 08:36 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 20 20 24 20 20 20 20 20 20 20 20 20 45 20 20 20 20 20 20 20 20 20 20 20 20 20 90 20 20 150 20 20 20 21 20 20 20 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 4 of 25 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 16:42 Volatile Organic Compounds Environmental Support Technologies Analyte Material Blank (3F72801-02) Air cis-1,3-Dichloropropene Dibromochloromethane Dibromomethane Dichlorodifluoromethane Ethylbenzene Hexachlorobutadiene Isopropylbenzene meta- and para-Xylenes Methylene Chloride Naphthalene n-Butylbenzene n-Propylbenzene ortho-Xylene p-Isopropyltoluene sec-Butylbenzene Styrene tert-Butylbenzene Tetrachloroethene Toluene trans-1,2-Dichloroethene trans-1,3-Dichloropropene Trichloroethene Trichlorofluoromethane Vinyl Chloride 2-Propanol Surrogate: Dibromofluoromethane Surrogate: Toluene-d8 Surrogate: 4-Bromofluorobenzene Diisopropyl Ether (DIPE) Ethyl tert-butyl ether (EtBE) Methyl tert-butyl ether (MtBE) tert-Amyl methyl ether (TAME) tert-Butanol (TBA) Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F2802 06/28/17 06/28/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/28/17 08:20 Analyzed: 06/28/17 08:36 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 20 90 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 290 ND ND ND ND ND 109 % 93.7 % 99.4 % 1000 1000 1000 1000 20000 75-125 75-125 75-125 " 1 " " " " " " " " " " " " " " " " " " " " " " " " " " " " The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 5 of 25 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 16:42 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-253-5 3PV (3F72801-03) Air 1,1,1,2-Tetrachloroethane 1,1,1-Trichloroethane 1,1,2,2-Tetrachloroethane 1,1,2-Trichloroethane 1,1,2-Trichloro-trifluoroethane 1,1-Dichloroethane 1,1-Dichloroethene 1,1-Dichloropropene 1,2,3-Trichlorobenzene 1,2,3-Trichloropropane 1,2,4-Trichlorobenzene 1,2,4-Trimethylbenzene 1,2-Dibromo-3-chloropropane 1,2-Dibromoethane 1,2-Dichlorobenzene 1,2-Dichloroethane 1,2-Dichloropropane 1,3,5-Trimethylbenzene 1,3-Dichlorobenzene 1,3-Dichloropropane 1,4-Dichlorobenzene 2,2-Dichloropropane 2-Chlorotoluene 4-Chlorotoluene Benzene Bromobenzene Bromochloromethane Bromodichloromethane Bromoform Bromomethane Carbon disulfide Carbon tetrachloride Chlorobenzene Chloroethane Chloroform Chloromethane cis-1,2-Dichloroethene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F2802 06/28/17 06/28/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/28/17 08:55 Analyzed: 06/28/17 09:09 ND ND ND ND ND ND ND ND ND ND ND 410 ND ND ND ND ND 190 ND ND ND ND ND ND 60 ND ND ND ND ND 90 ND ND ND ND ND ND 20 20 24 20 20 20 20 20 20 20 20 20 45 20 20 20 20 20 20 20 20 20 20 20 20 20 90 20 20 150 20 20 20 21 20 20 20 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 6 of 25 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 16:42 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-253-5 3PV (3F72801-03) Air cis-1,3-Dichloropropene Dibromochloromethane Dibromomethane Dichlorodifluoromethane Ethylbenzene Hexachlorobutadiene Isopropylbenzene meta- and para-Xylenes Methylene Chloride Naphthalene n-Butylbenzene n-Propylbenzene ortho-Xylene p-Isopropyltoluene sec-Butylbenzene Styrene tert-Butylbenzene Tetrachloroethene Toluene trans-1,2-Dichloroethene trans-1,3-Dichloropropene Trichloroethene Trichlorofluoromethane Vinyl Chloride 2-Propanol Surrogate: Dibromofluoromethane Surrogate: Toluene-d8 Surrogate: 4-Bromofluorobenzene Diisopropyl Ether (DIPE) Ethyl tert-butyl ether (EtBE) Methyl tert-butyl ether (MtBE) tert-Amyl methyl ether (TAME) tert-Butanol (TBA) Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F2802 06/28/17 06/28/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/28/17 08:55 Analyzed: 06/28/17 09:09 ND ND ND ND 180 ND 20 830 ND ND 10 70 280 10 ND ND ND ND 470 ND ND ND ND ND ND 20 90 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 290 ND ND ND ND ND 105 % 94.8 % 97.9 % 1000 1000 1000 1000 20000 75-125 75-125 75-125 " 1 " " " " " " " " " " " " " " " " " " " " " " " " " " " " J J The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 7 of 25 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 16:42 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-253-22 3PV (3F72801-04) Air 1,1,1,2-Tetrachloroethane 1,1,1-Trichloroethane 1,1,2,2-Tetrachloroethane 1,1,2-Trichloroethane 1,1,2-Trichloro-trifluoroethane 1,1-Dichloroethane 1,1-Dichloroethene 1,1-Dichloropropene 1,2,3-Trichlorobenzene 1,2,3-Trichloropropane 1,2,4-Trichlorobenzene 1,2,4-Trimethylbenzene 1,2-Dibromo-3-chloropropane 1,2-Dibromoethane 1,2-Dichlorobenzene 1,2-Dichloroethane 1,2-Dichloropropane 1,3,5-Trimethylbenzene 1,3-Dichlorobenzene 1,3-Dichloropropane 1,4-Dichlorobenzene 2,2-Dichloropropane 2-Chlorotoluene 4-Chlorotoluene Benzene Bromobenzene Bromochloromethane Bromodichloromethane Bromoform Bromomethane Carbon disulfide Carbon tetrachloride Chlorobenzene Chloroethane Chloroform Chloromethane cis-1,2-Dichloroethene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F2802 06/28/17 06/28/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/28/17 09:50 Analyzed: 06/28/17 10:06 ND ND ND ND ND ND ND ND ND ND ND 40 ND ND ND ND ND 20 ND ND ND ND ND ND 10 ND ND ND ND ND 90 ND ND ND ND ND ND 20 20 24 20 20 20 20 20 20 20 20 20 45 20 20 20 20 20 20 20 20 20 20 20 20 20 90 20 20 150 20 20 20 21 20 20 20 J The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 8 of 25 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 16:42 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-253-22 3PV (3F72801-04) Air cis-1,3-Dichloropropene Dibromochloromethane Dibromomethane Dichlorodifluoromethane Ethylbenzene Hexachlorobutadiene Isopropylbenzene meta- and para-Xylenes Methylene Chloride Naphthalene n-Butylbenzene n-Propylbenzene ortho-Xylene p-Isopropyltoluene sec-Butylbenzene Styrene tert-Butylbenzene Tetrachloroethene Toluene trans-1,2-Dichloroethene trans-1,3-Dichloropropene Trichloroethene Trichlorofluoromethane Vinyl Chloride 2-Propanol Surrogate: Dibromofluoromethane Surrogate: Toluene-d8 Surrogate: 4-Bromofluorobenzene Diisopropyl Ether (DIPE) Ethyl tert-butyl ether (EtBE) Methyl tert-butyl ether (MtBE) tert-Amyl methyl ether (TAME) tert-Butanol (TBA) Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F2802 06/28/17 06/28/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/28/17 09:50 Analyzed: 06/28/17 10:06 ND ND ND ND 20 ND ND 60 ND ND ND ND 20 ND ND ND ND ND 40 ND ND ND ND ND ND 20 90 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 290 ND ND ND ND ND 102 % 95.2 % 103 % 1000 1000 1000 1000 20000 75-125 75-125 75-125 " 1 " " " " " " " " " " " " " " " " " " " " " " " " " " " " The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 9 of 25 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 16:42 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-711-5 3PV (3F72801-05) Air 1,1,1,2-Tetrachloroethane 1,1,1-Trichloroethane 1,1,2,2-Tetrachloroethane 1,1,2-Trichloroethane 1,1,2-Trichloro-trifluoroethane 1,1-Dichloroethane 1,1-Dichloroethene 1,1-Dichloropropene 1,2,3-Trichlorobenzene 1,2,3-Trichloropropane 1,2,4-Trichlorobenzene 1,2,4-Trimethylbenzene 1,2-Dibromo-3-chloropropane 1,2-Dibromoethane 1,2-Dichlorobenzene 1,2-Dichloroethane 1,2-Dichloropropane 1,3,5-Trimethylbenzene 1,3-Dichlorobenzene 1,3-Dichloropropane 1,4-Dichlorobenzene 2,2-Dichloropropane 2-Chlorotoluene 4-Chlorotoluene Benzene Bromobenzene Bromochloromethane Bromodichloromethane Bromoform Bromomethane Carbon disulfide Carbon tetrachloride Chlorobenzene Chloroethane Chloroform Chloromethane cis-1,2-Dichloroethene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F2802 06/28/17 06/28/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/28/17 10:20 Analyzed: 06/28/17 10:34 ND ND ND ND ND ND ND ND ND ND ND 10 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 20 20 24 20 20 20 20 20 20 20 20 20 45 20 20 20 20 20 20 20 20 20 20 20 20 20 90 20 20 150 20 20 20 21 20 20 20 J The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 10 of 25 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 16:42 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-711-5 3PV (3F72801-05) Air cis-1,3-Dichloropropene Dibromochloromethane Dibromomethane Dichlorodifluoromethane Ethylbenzene Hexachlorobutadiene Isopropylbenzene meta- and para-Xylenes Methylene Chloride Naphthalene n-Butylbenzene n-Propylbenzene ortho-Xylene p-Isopropyltoluene sec-Butylbenzene Styrene tert-Butylbenzene Tetrachloroethene Toluene trans-1,2-Dichloroethene trans-1,3-Dichloropropene Trichloroethene Trichlorofluoromethane Vinyl Chloride 2-Propanol Surrogate: Dibromofluoromethane Surrogate: Toluene-d8 Surrogate: 4-Bromofluorobenzene Diisopropyl Ether (DIPE) Ethyl tert-butyl ether (EtBE) Methyl tert-butyl ether (MtBE) tert-Amyl methyl ether (TAME) tert-Butanol (TBA) Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F2802 06/28/17 06/28/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/28/17 10:20 Analyzed: 06/28/17 10:34 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 20 90 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 290 ND ND ND ND ND 104 % 96.0 % 99.0 % 1000 1000 1000 1000 20000 75-125 75-125 75-125 " 1 " " " " " " " " " " " " " " " " " " " " " " " " " " " " The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 11 of 25 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 16:42 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-711-8 3PV (3F72801-06) Air 1,1,1,2-Tetrachloroethane 1,1,1-Trichloroethane 1,1,2,2-Tetrachloroethane 1,1,2-Trichloroethane 1,1,2-Trichloro-trifluoroethane 1,1-Dichloroethane 1,1-Dichloroethene 1,1-Dichloropropene 1,2,3-Trichlorobenzene 1,2,3-Trichloropropane 1,2,4-Trichlorobenzene 1,2,4-Trimethylbenzene 1,2-Dibromo-3-chloropropane 1,2-Dibromoethane 1,2-Dichlorobenzene 1,2-Dichloroethane 1,2-Dichloropropane 1,3,5-Trimethylbenzene 1,3-Dichlorobenzene 1,3-Dichloropropane 1,4-Dichlorobenzene 2,2-Dichloropropane 2-Chlorotoluene 4-Chlorotoluene Benzene Bromobenzene Bromochloromethane Bromodichloromethane Bromoform Bromomethane Carbon disulfide Carbon tetrachloride Chlorobenzene Chloroethane Chloroform Chloromethane cis-1,2-Dichloroethene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F2802 06/28/17 06/28/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/28/17 10:50 Analyzed: 06/28/17 11:06 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 20 20 24 20 20 20 20 20 20 20 20 20 45 20 20 20 20 20 20 20 20 20 20 20 20 20 90 20 20 150 20 20 20 21 20 20 20 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 12 of 25 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 16:42 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-711-8 3PV (3F72801-06) Air cis-1,3-Dichloropropene Dibromochloromethane Dibromomethane Dichlorodifluoromethane Ethylbenzene Hexachlorobutadiene Isopropylbenzene meta- and para-Xylenes Methylene Chloride Naphthalene n-Butylbenzene n-Propylbenzene ortho-Xylene p-Isopropyltoluene sec-Butylbenzene Styrene tert-Butylbenzene Tetrachloroethene Toluene trans-1,2-Dichloroethene trans-1,3-Dichloropropene Trichloroethene Trichlorofluoromethane Vinyl Chloride 2-Propanol Surrogate: Dibromofluoromethane Surrogate: Toluene-d8 Surrogate: 4-Bromofluorobenzene Diisopropyl Ether (DIPE) Ethyl tert-butyl ether (EtBE) Methyl tert-butyl ether (MtBE) tert-Amyl methyl ether (TAME) tert-Butanol (TBA) Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F2802 06/28/17 06/28/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/28/17 10:50 Analyzed: 06/28/17 11:06 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 20 90 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 290 ND ND ND ND ND 107 % 94.5 % 105 % 1000 1000 1000 1000 20000 75-125 75-125 75-125 " 1 " " " " " " " " " " " " " " " " " " " " " " " " " " " " The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 13 of 25 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 16:42 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-699-5 3PV (3F72801-07) Air 1,1,1,2-Tetrachloroethane 1,1,1-Trichloroethane 1,1,2,2-Tetrachloroethane 1,1,2-Trichloroethane 1,1,2-Trichloro-trifluoroethane 1,1-Dichloroethane 1,1-Dichloroethene 1,1-Dichloropropene 1,2,3-Trichlorobenzene 1,2,3-Trichloropropane 1,2,4-Trichlorobenzene 1,2,4-Trimethylbenzene 1,2-Dibromo-3-chloropropane 1,2-Dibromoethane 1,2-Dichlorobenzene 1,2-Dichloroethane 1,2-Dichloropropane 1,3,5-Trimethylbenzene 1,3-Dichlorobenzene 1,3-Dichloropropane 1,4-Dichlorobenzene 2,2-Dichloropropane 2-Chlorotoluene 4-Chlorotoluene Benzene Bromobenzene Bromochloromethane Bromodichloromethane Bromoform Bromomethane Carbon disulfide Carbon tetrachloride Chlorobenzene Chloroethane Chloroform Chloromethane cis-1,2-Dichloroethene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F2802 06/28/17 06/28/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/28/17 11:20 Analyzed: 06/28/17 11:34 ND ND ND ND ND ND ND ND ND ND ND 450 ND ND ND ND ND 210 ND ND ND ND ND ND 100 ND ND ND ND ND 70 ND ND ND ND ND ND 20 20 24 20 20 20 20 20 20 20 20 20 45 20 20 20 20 20 20 20 20 20 20 20 20 20 90 20 20 150 20 20 20 21 20 20 20 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 14 of 25 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 16:42 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-699-5 3PV (3F72801-07) Air cis-1,3-Dichloropropene Dibromochloromethane Dibromomethane Dichlorodifluoromethane Ethylbenzene Hexachlorobutadiene Isopropylbenzene meta- and para-Xylenes Methylene Chloride Naphthalene n-Butylbenzene n-Propylbenzene ortho-Xylene p-Isopropyltoluene sec-Butylbenzene Styrene tert-Butylbenzene Tetrachloroethene Toluene trans-1,2-Dichloroethene trans-1,3-Dichloropropene Trichloroethene Trichlorofluoromethane Vinyl Chloride 2-Propanol Surrogate: Dibromofluoromethane Surrogate: Toluene-d8 Surrogate: 4-Bromofluorobenzene Diisopropyl Ether (DIPE) Ethyl tert-butyl ether (EtBE) Methyl tert-butyl ether (MtBE) tert-Amyl methyl ether (TAME) tert-Butanol (TBA) Result Reporting Limit Units Notes Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F2802 06/28/17 06/28/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " J " " " " " " J " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Sampled: 06/28/17 11:20 Analyzed: 06/28/17 11:34 ND ND ND ND 210 ND 20 900 ND ND 10 80 270 10 10 ND ND ND 650 ND ND ND ND ND ND 20 90 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 290 ND ND ND ND ND 102 % 93.9 % 97.0 % 1000 1000 1000 1000 20000 75-125 75-125 75-125 " 1 " " " " " " " " " " " " " " " " " " " " " " " " " " " " J The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 15 of 25 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 16:42 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-699-25 3PV (3F72801-08) Air 1,1,1,2-Tetrachloroethane 1,1,1-Trichloroethane 1,1,2,2-Tetrachloroethane 1,1,2-Trichloroethane 1,1,2-Trichloro-trifluoroethane 1,1-Dichloroethane 1,1-Dichloroethene 1,1-Dichloropropene 1,2,3-Trichlorobenzene 1,2,3-Trichloropropane 1,2,4-Trichlorobenzene 1,2,4-Trimethylbenzene 1,2-Dibromo-3-chloropropane 1,2-Dibromoethane 1,2-Dichlorobenzene 1,2-Dichloroethane 1,2-Dichloropropane 1,3,5-Trimethylbenzene 1,3-Dichlorobenzene 1,3-Dichloropropane 1,4-Dichlorobenzene 2,2-Dichloropropane 2-Chlorotoluene 4-Chlorotoluene Benzene Bromobenzene Bromochloromethane Bromodichloromethane Bromoform Bromomethane Carbon disulfide Carbon tetrachloride Chlorobenzene Chloroethane Chloroform Chloromethane cis-1,2-Dichloroethene Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F2802 06/28/17 06/28/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/28/17 11:50 Analyzed: 06/28/17 12:02 ND ND ND ND ND ND ND ND ND ND ND 280 ND ND ND ND ND 140 ND ND ND ND ND ND 90 ND ND ND ND ND ND ND ND ND ND ND ND 20 20 24 20 20 20 20 20 20 20 20 20 45 20 20 20 20 20 20 20 20 20 20 20 20 20 90 20 20 150 20 20 20 21 20 20 20 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 16 of 25 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 16:42 Volatile Organic Compounds Environmental Support Technologies Analyte SGP-699-25 3PV (3F72801-08) Air cis-1,3-Dichloropropene Dibromochloromethane Dibromomethane Dichlorodifluoromethane Ethylbenzene Hexachlorobutadiene Isopropylbenzene meta- and para-Xylenes Methylene Chloride Naphthalene n-Butylbenzene n-Propylbenzene ortho-Xylene p-Isopropyltoluene sec-Butylbenzene Styrene tert-Butylbenzene Tetrachloroethene Toluene trans-1,2-Dichloroethene trans-1,3-Dichloropropene Trichloroethene Trichlorofluoromethane Vinyl Chloride 2-Propanol Surrogate: Dibromofluoromethane Surrogate: Toluene-d8 Surrogate: 4-Bromofluorobenzene Diisopropyl Ether (DIPE) Ethyl tert-butyl ether (EtBE) Methyl tert-butyl ether (MtBE) tert-Amyl methyl ether (TAME) tert-Butanol (TBA) Result Reporting Limit Units Dilution Batch Prepared Analyzed Method ug/m³ Air 1 37F2802 06/28/17 06/28/17 EPA 8260B " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Notes Sampled: 06/28/17 11:50 Analyzed: 06/28/17 12:02 ND ND ND ND 150 ND 20 620 ND ND ND 50 170 10 ND ND ND ND 490 ND ND ND ND ND ND 20 90 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 290 ND ND ND ND ND 102 % 95.6 % 97.1 % 1000 1000 1000 1000 20000 75-125 75-125 75-125 " 1 " " " " " " " " " " " " " " " " " " " " " " " " " " " " J The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 17 of 25 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 16:42 Volatile Organic Compounds - Quality Control Environmental Support Technologies Result Reporting Limit 1,1,1,2-Tetrachloroethane ND 20 Diisopropyl Ether (DIPE) ND 1000 " 1,1,1-Trichloroethane ND 20 " Ethyl tert-butyl ether (EtBE) ND 1000 " 1,1,2,2-Tetrachloroethane ND 24 " Methyl tert-butyl ether (MtBE) ND 1000 " 1,1,2-Trichloroethane ND 20 " tert-Amyl methyl ether (TAME) ND 1000 " 1,1,2-Trichloro-trifluoroethane ND 20 " tert-Butanol (TBA) ND 20000 " 1,1-Dichloroethane ND 20 " 1,1-Dichloroethene ND 20 " 1,1-Dichloropropene ND 20 " 1,2,3-Trichlorobenzene ND 20 " 1,2,3-Trichloropropane ND 20 " 1,2,4-Trichlorobenzene ND 20 " 1,2,4-Trimethylbenzene ND 20 " 1,2-Dibromo-3-chloropropane ND 45 " 1,2-Dibromoethane ND 20 " 1,2-Dichlorobenzene ND 20 " 1,2-Dichloroethane ND 20 " 1,2-Dichloropropane ND 20 " 1,3,5-Trimethylbenzene ND 20 " 1,3-Dichlorobenzene ND 20 " 1,3-Dichloropropane ND 20 " 1,4-Dichlorobenzene ND 20 " 2,2-Dichloropropane ND 20 " 2-Chlorotoluene ND 20 " 4-Chlorotoluene ND 20 " Benzene ND 20 " Bromobenzene ND 20 " Bromochloromethane ND 90 " Bromodichloromethane ND 20 " Analyte Units Spike Level Source Result %REC %REC Limits RPD RPD Limit Notes Batch 37F2802 - Volatiles Blank (37F2802-BLK1) Prepared & Analyzed: 06/28/17 ug/m³ Air The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 18 of 25 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 16:42 Volatile Organic Compounds - Quality Control Environmental Support Technologies Result Reporting Limit Bromoform ND 20 ug/m³ Air Bromomethane ND 150 " Carbon disulfide ND 20 " Carbon tetrachloride ND 20 " Chlorobenzene ND 20 " Chloroethane ND 21 " Chloroform ND 20 " Chloromethane ND 20 " cis-1,2-Dichloroethene ND 20 " cis-1,3-Dichloropropene ND 20 " Dibromochloromethane ND 90 " Dibromomethane ND 20 " Dichlorodifluoromethane ND 20 " Ethylbenzene ND 20 " Hexachlorobutadiene ND 20 " Isopropylbenzene ND 20 " meta- and para-Xylenes ND 20 " Methylene Chloride ND 20 " Naphthalene ND 20 " n-Butylbenzene ND 20 " n-Propylbenzene ND 20 " ortho-Xylene ND 20 " p-Isopropyltoluene ND 20 " sec-Butylbenzene ND 20 " Styrene ND 20 " tert-Butylbenzene ND 20 " Tetrachloroethene ND 20 " Toluene ND 20 " trans-1,2-Dichloroethene ND 20 " trans-1,3-Dichloropropene ND 20 " Trichloroethene ND 20 " Trichlorofluoromethane ND 20 " Vinyl Chloride ND 20 " Analyte Units Spike Level Source Result %REC %REC Limits RPD RPD Limit Notes Batch 37F2802 - Volatiles Blank (37F2802-BLK1) Prepared & Analyzed: 06/28/17 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 19 of 25 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 16:42 Volatile Organic Compounds - Quality Control Environmental Support Technologies Analyte Result Reporting Limit ND 290 Units Spike Level Source Result %REC %REC Limits RPD RPD Limit Notes Batch 37F2802 - Volatiles Blank (37F2802-BLK1) 2-Propanol Prepared & Analyzed: 06/28/17 ug/m³ Air Surrogate: Dibromofluoromethane 2740 " 2500 110 75-125 Surrogate: Toluene-d8 2270 " 2500 90.9 75-125 Surrogate: 4-Bromofluorobenzene 2520 " 2500 101 75-125 LCS (37F2802-BS1) Prepared & Analyzed: 06/28/17 Diisopropyl Ether (DIPE) 1190 1000 ug/m³ Air 1,1,1,2-Tetrachloroethane 1250 1250 95.2 70-137 20 " 1250 100 Ethyl tert-butyl ether (EtBE) 75-136 1170 1000 " 1250 93.6 70-130 1,1,1-Trichloroethane 1130 20 " 1250 90.4 73-134 1,1,2,2-Tetrachloroethane 1350 24 " 1250 108 56-149 Methyl tert-butyl ether (MtBE) 1920 1000 " 2500 76.8 70-130 tert-Amyl methyl ether (TAME) 1060 1000 " 1250 84.8 70-125 1,1,2-Trichloroethane 1370 20 " 1250 110 67-137 12500 20000 " 12500 100 61-159 1,1,2-Trichloro-trifluoroethane 1200 20 " 1250 96.0 83-125 1,1-Dichloroethane 1110 20 " 1250 88.8 80-121 1,1-Dichloroethene 1160 20 " 1250 92.8 73-137 1,1-Dichloropropene 1200 20 " 1250 96.0 77-122 1,2,3-Trichlorobenzene 1330 20 " 1250 106 67-133 1,2,3-Trichloropropane 1280 20 " 1250 102 56-145 1,2,4-Trichlorobenzene 1280 20 " 1250 102 71-135 1,2,4-Trimethylbenzene 1240 20 " 1250 99.2 76-140 1,2-Dibromo-3-chloropropane 1130 45 " 1250 90.4 43-158 1,2-Dibromoethane 1310 20 " 1250 105 80-130 1,2-Dichlorobenzene 1110 20 " 1250 88.8 67-139 1,2-Dichloroethane 1170 20 " 1250 93.6 75-131 1,2-Dichloropropane 1250 20 " 1250 100 62-144 1,3,5-Trimethylbenzene 1130 20 " 1250 90.4 78-125 1,3-Dichlorobenzene 1310 20 " 1250 105 82-120 1,3-Dichloropropane 1280 20 " 1250 102 61-145 1,4-Dichlorobenzene 1360 20 " 1250 109 84-120 2,2-Dichloropropane 1080 20 " 1250 86.4 68-134 2-Chlorotoluene 1330 20 " 1250 106 65-127 tert-Butanol (TBA) J The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 20 of 25 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 16:42 Volatile Organic Compounds - Quality Control Environmental Support Technologies Result Reporting Limit 4-Chlorotoluene 1310 20 ug/m³ Air 1250 105 65-127 Benzene 1380 20 " 1250 110 79-118 Bromobenzene 1320 20 " 1250 106 69-140 Bromochloromethane 1290 90 " 1250 103 61-141 Bromodichloromethane 1240 20 " 1250 99.2 67-137 Bromoform 1300 20 " 1250 104 57-152 Bromomethane 1380 150 " 1250 110 51-148 Carbon disulfide 1340 20 " 1250 107 61-140 Carbon tetrachloride 1230 20 " 1250 98.4 74-143 Chlorobenzene 1100 20 " 1250 88.0 67-140 Chloroethane 1280 21 " 1250 102 60-137 Chloroform 1160 20 " 1250 92.8 82-140 Chloromethane 1110 20 " 1250 88.8 58-139 cis-1,2-Dichloroethene 1270 20 " 1250 102 85-116 cis-1,3-Dichloropropene 1260 20 " 1250 101 66-142 Dibromochloromethane 1320 90 " 1250 106 61-140 Dibromomethane 1370 20 " 1250 110 66-143 Dichlorodifluoromethane 1340 20 " 1250 107 47-129 Ethylbenzene 1150 20 " 1250 92.0 70-125 Hexachlorobutadiene 1190 20 " 1250 95.2 71-145 Isopropylbenzene 1240 20 " 1250 99.2 85-116 meta- and para-Xylenes 2580 20 " 2500 103 83-115 Methylene Chloride 1280 20 " 1250 102 81-126 Naphthalene 1280 20 " 1250 102 56-140 n-Butylbenzene 1330 20 " 1250 106 60-149 n-Propylbenzene 1370 20 " 1250 110 77-129 ortho-Xylene 1370 20 " 1250 110 85-115 p-Isopropyltoluene 1230 20 " 1250 98.4 63-144 sec-Butylbenzene 1200 20 " 1250 96.0 68-128 Styrene 1230 20 " 1250 98.4 65-142 tert-Butylbenzene 1360 20 " 1250 109 60-128 Tetrachloroethene 1310 20 " 1250 105 60-144 Toluene 1260 20 " 1250 101 70-115 Analyte Units Spike Level Source Result %REC %REC Limits RPD RPD Limit Notes Batch 37F2802 - Volatiles LCS (37F2802-BS1) Prepared & Analyzed: 06/28/17 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 21 of 25 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 16:42 Volatile Organic Compounds - Quality Control Environmental Support Technologies Result Reporting Limit trans-1,2-Dichloroethene 1320 20 ug/m³ Air 1250 106 72-133 trans-1,3-Dichloropropene 1280 20 " 1250 102 68-140 Trichloroethene 1120 20 " 1250 89.6 68-132 Trichlorofluoromethane 1330 20 " 1250 106 62-144 Vinyl Chloride 1330 20 " 1250 106 66-137 Analyte Units Spike Level Source Result %REC %REC Limits RPD RPD Limit Notes Batch 37F2802 - Volatiles LCS (37F2802-BS1) Prepared & Analyzed: 06/28/17 Surrogate: Dibromofluoromethane 13200 " 12500 105 75-125 Surrogate: Toluene-d8 12100 " 12500 96.6 75-125 Surrogate: 4-Bromofluorobenzene 13100 " 12500 104 75-125 Duplicate (37F2802-DUP1) Source: 3F72801-03 Diisopropyl Ether (DIPE) ND 1000 1,1,1,2-Tetrachloroethane ND 1,1,1-Trichloroethane Prepared & Analyzed: 06/28/17 ug/m³ Air ND 20 20 " ND 50 ND 20 " ND 50 Ethyl tert-butyl ether (EtBE) ND 1000 " ND 20 1,1,2,2-Tetrachloroethane ND 24 " ND 50 Methyl tert-butyl ether (MtBE) ND 1000 " ND 20 1,1,2-Trichloroethane ND 20 " ND 50 tert-Amyl methyl ether (TAME) ND 1000 " ND 20 1,1,2-Trichloro-trifluoroethane ND 20 " ND 50 tert-Butanol (TBA) ND 20000 " ND 20 1,1-Dichloroethane ND 20 " ND 50 1,1-Dichloroethene ND 20 " ND 50 1,1-Dichloropropene ND 20 " ND 50 1,2,3-Trichlorobenzene ND 20 " ND 50 1,2,3-Trichloropropane ND 20 " ND 50 1,2,4-Trichlorobenzene ND 20 " ND 1,2,4-Trimethylbenzene 390 20 " 410 1,2-Dibromo-3-chloropropane ND 45 " ND 50 1,2-Dibromoethane ND 20 " ND 50 1,2-Dichlorobenzene ND 20 " ND 50 1,2-Dichloroethane ND 20 " ND 50 1,2-Dichloropropane ND 20 " ND 1,3,5-Trimethylbenzene 190 20 " 190 1,3-Dichlorobenzene ND 20 " ND 50 5.00 50 50 0.00 50 50 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 22 of 25 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 16:42 Volatile Organic Compounds - Quality Control Environmental Support Technologies Analyte Result Reporting Limit Units Spike Level Source Result %REC %REC Limits RPD RPD Limit Notes Batch 37F2802 - Volatiles Duplicate (37F2802-DUP1) Source: 3F72801-03 Prepared & Analyzed: 06/28/17 1,3-Dichloropropane ND 20 ug/m³ Air ND 50 1,4-Dichlorobenzene ND 20 " ND 50 2,2-Dichloropropane ND 20 " ND 50 2-Chlorotoluene ND 20 " ND 50 4-Chlorotoluene ND 20 " ND 50.0 20 " 60.0 Bromobenzene ND 20 " ND 50 Bromochloromethane ND 90 " ND 50 Bromodichloromethane ND 20 " ND 50 Bromoform ND 20 " ND 50 Bromomethane ND 150 " ND Carbon disulfide 80.0 20 " 90.0 Carbon tetrachloride ND 20 " ND 50 Chlorobenzene ND 20 " ND 50 Chloroethane ND 21 " ND 50 Chloroform ND 20 " ND 50 Chloromethane ND 20 " ND 50 cis-1,2-Dichloroethene ND 20 " ND 50 cis-1,3-Dichloropropene ND 20 " ND 50 Dibromochloromethane ND 90 " ND 50 Dibromomethane ND 20 " ND 50 Dichlorodifluoromethane ND 20 " ND Ethylbenzene 180 20 " 180 Hexachlorobutadiene ND 20 " ND Isopropylbenzene 20.0 20 " 20.0 0.00 50 meta- and para-Xylenes 800 20 " 830 3.68 50 Methylene Chloride ND 20 " ND Naphthalene ND 20 " ND n-Butylbenzene 10.0 20 " 10.0 0.00 50 n-Propylbenzene 70.0 20 " 70.0 0.00 50 ortho-Xylene 260 20 " 280 7.41 50 p-Isopropyltoluene 10.0 20 " 10.0 0.00 50 sec-Butylbenzene ND 20 " ND Benzene 50 18.2 50 50 11.8 50 50 0.00 50 50 50 50 J J 50 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 23 of 25 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 16:42 Volatile Organic Compounds - Quality Control Environmental Support Technologies Analyte Result Reporting Limit Units Spike Level Source Result %REC %REC Limits RPD RPD Limit Notes Batch 37F2802 - Volatiles Duplicate (37F2802-DUP1) Source: 3F72801-03 Prepared & Analyzed: 06/28/17 Styrene ND 20 ug/m³ Air ND 50 tert-Butylbenzene ND 20 " ND 50 Tetrachloroethene ND 20 " ND Toluene 450 20 " 470 trans-1,2-Dichloroethene ND 20 " ND 50 trans-1,3-Dichloropropene ND 20 " ND 50 Trichloroethene ND 20 " ND 50 Trichlorofluoromethane ND 20 " ND 50 Vinyl Chloride ND 20 " ND 50 2-Propanol ND 290 " ND 200 50 4.35 Surrogate: Dibromofluoromethane 2550 " 2500 102 75-125 Surrogate: Toluene-d8 2350 " 2500 93.8 75-125 Surrogate: 4-Bromofluorobenzene 2470 " 2500 98.7 75-125 50 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 24 of 25 Project: Otay Ranch Village 3 Chula Vista, CA. 91911 Project Number: EST3095 Project Manager: Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave, Ste. A San Diego, California 92123 Reported: 29-Jun-17 16:42 Notes and Definitions J Detected but below the Reporting Limit; therefore, result is an estimated concentration (CLP J-Flag). DET Analyte DETECTED ND Analyte NOT DETECTED at or above the reporting limit NR Not Reported dry Sample results reported on a dry weight basis RPD Relative Percent Difference The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 8 Goodyear, Suite 125, Irvine, California 92618 Telephone: (949) 679-9500 Fax: (949) 679-9501 Page 25 of 25 Mobile Geochemistry Inc. 31 July 2017 Mr. Brian Kettmann TRC Solutions 4393 Viewridge Ave., Suite A San Diego, CA 92123 H&P Project: TRC071217-SB1 Rev 2 Client Project: 280845/PH01 / Otay Ranch Village 3 Dear Mr. Brian Kettmann: Enclosed is the analytical report for the above referenced project. The data herein applies to samples as received by H&P Mobile Geochemistry, Inc. on 7/12/2017 -7/14/2017 which were analyzed in accordance with the attached Chain of Custody record(s) . The results for all sample analyses and required QA/QC analyses are presented in the following sections and summarized in the documents: • • • • • • • Sample Summary Case Narrative (if applicable) Sample Results Quality Control Summary Notes and Definitions / Appendix Chain of Custody Sampling Logs (if applicable) Unless otherwise noted, I certify that all analyses were performed and reviewed in compliance with our Quality Systems Manual and Standard Operating Procedures. This report shall not be reproduced, except in full, without the written approval of H &P Mobile Geochemistry, Inc. We at H&P Mobile Geochemistry, Inc. sincerely appreciate the opportunity to provide analytical services to you on this project. If you have any questions or concerns regarding this analytical report, please contact me at your convenience at 760-804-9678. Sincerely, Janis La Roux Laboratory Director H&P Mobile Geochemistry, Inc. is certified under the California ELAP and the National Environmental Laboratory Accreditation Conference (NELAC). H&P is approved as an Environmental Testing Laboratory and Mobile Laboratory in accordance with the DoD-ELAP Program and ISO/IEC 17025:2005 programs, accreditation number 69070 for EPA Method TO-15, H&P Method TO-15, EPA Method 8260B and H&P 8260SV. Quality. Accuracy. Experience. 2470 Impala Drive, Carlsbad, CA 92010 & Field Office - Signal Hill, CA P 1.800.834.9888 / 760.804.9678 F 760.804.9159 W handpmg.com Page 1 of 17 2470 Impala Drive Carlsbad, CA 92010 760-804-9678 Phone 760-804-9159 Fax H&P Mobile Geochemistry Inc. TRC Solutions 4393 Viewridge Ave., Suite A San Diego, CA 92123 Project: TRC071217-SB1 Rev 2 Project Number: 280845/PH01 / Otay Ranch Village 3 Project Manager: Mr. Brian Kettmann Reported: 31-Jul-17 10:50 ANALYTICAL REPORT FOR SAMPLES Sample ID Laboratory ID Matrix Date Sampled Date Received SGP-126-5' Pre E707036-02 Vapor 12-Jul-17 12-Jul-17 SGP-126-25' Pre E707036-03 Vapor 12-Jul-17 12-Jul-17 SGP-126-5' Post E707036-04 Vapor 12-Jul-17 12-Jul-17 SGP-126-25' Post E707036-05 Vapor 12-Jul-17 12-Jul-17 SGP-699-5' Pre E707036-06 Vapor 12-Jul-17 12-Jul-17 SGP-699-25' Pre E707036-07 Vapor 12-Jul-17 12-Jul-17 SGP-699-5' Post E707036-08 Vapor 12-Jul-17 12-Jul-17 SGP-699-25' Post E707036-09 Vapor 12-Jul-17 12-Jul-17 SGP-42-5' Pre E707036-10 Vapor 12-Jul-17 12-Jul-17 SGP-42-25' Pre E707036-11 Vapor 12-Jul-17 12-Jul-17 SGP-42-5' Post E707036-12 Vapor 12-Jul-17 12-Jul-17 SGP-42-25' Post E707036-13 Vapor 12-Jul-17 12-Jul-17 SGP-06-5' Pre E707036-14 Vapor 12-Jul-17 12-Jul-17 SGP-05-5' Pre E707036-15 Vapor 12-Jul-17 12-Jul-17 SGP-05-5' Pre Rep E707036-16 Vapor 12-Jul-17 12-Jul-17 SGP-04-5' Pre E707036-17 Vapor 12-Jul-17 12-Jul-17 SGP-04-13' Pre E707036-18 Vapor 12-Jul-17 12-Jul-17 SGP-05-13' Pre E707036-19 Vapor 12-Jul-17 12-Jul-17 SGP-01-5' Pre E707041-01 Vapor 13-Jul-17 13-Jul-17 SGP-01-10' Pre E707041-02 Vapor 13-Jul-17 13-Jul-17 SGP-02-5' Pre E707041-03 Vapor 13-Jul-17 13-Jul-17 SGP-02-15' Pre E707041-04 Vapor 13-Jul-17 13-Jul-17 SGP-02-32' Pre E707041-05 Vapor 13-Jul-17 13-Jul-17 SGP-03-5' Pre E707041-06 Vapor 13-Jul-17 13-Jul-17 SGP-03-15' Pre E707041-07 Vapor 13-Jul-17 13-Jul-17 SGP-03-23' Pre E707041-08 Vapor 13-Jul-17 13-Jul-17 SGP-03-23' Pre Rep E707041-09 Vapor 13-Jul-17 13-Jul-17 SGP-09-5' Pre E707041-10 Vapor 13-Jul-17 13-Jul-17 Page 2 of 17 2470 Impala Drive Carlsbad, CA 92010 760-804-9678 Phone 760-804-9159 Fax H&P Mobile Geochemistry Inc. TRC Solutions 4393 Viewridge Ave., Suite A San Diego, CA 92123 Project: TRC071217-SB1 Rev 2 Project Number: 280845/PH01 / Otay Ranch Village 3 Project Manager: Mr. Brian Kettmann Reported: 31-Jul-17 10:50 ANALYTICAL REPORT FOR SAMPLES Sample ID Laboratory ID Matrix SGP-09-10' Pre E707041-11 Vapor Date Sampled 13-Jul-17 Date Received 13-Jul-17 SGP-51-5' Pre E707041-12 Vapor 13-Jul-17 13-Jul-17 SGP-51-25' Pre E707041-13 Vapor 13-Jul-17 13-Jul-17 SGP-51-5' Post E707041-14 Vapor 13-Jul-17 13-Jul-17 SGP-51-25' Post E707041-15 Vapor 13-Jul-17 13-Jul-17 SGP-196-5' Pre E707041-16 Vapor 13-Jul-17 13-Jul-17 SGP-196-30' Pre E707041-17 Vapor 13-Jul-17 13-Jul-17 SGP-202-5' Pre E707041-18 Vapor 13-Jul-17 13-Jul-17 SGP-202-25' Pre E707041-19 Vapor 13-Jul-17 13-Jul-17 SGP-202-5' Post E707041-20 Vapor 13-Jul-17 13-Jul-17 SGP-202-25' Post E707041-21 Vapor 13-Jul-17 13-Jul-17 SGP-211-5' Pre E707041-22 Vapor 13-Jul-17 13-Jul-17 SGP-211-25' Pre E707041-23 Vapor 13-Jul-17 13-Jul-17 SGP-211-5' Post E707041-24 Vapor 13-Jul-17 13-Jul-17 SGP-211-25' Post E707041-25 Vapor 13-Jul-17 13-Jul-17 SGP-711-5' Pre E707041-26 Vapor 13-Jul-17 13-Jul-17 SGP-711-8' Pre E707041-27 Vapor 13-Jul-17 13-Jul-17 SGP-94-5' Pre E707047-01 Vapor 14-Jul-17 14-Jul-17 SGP-94-25' Pre E707047-02 Vapor 14-Jul-17 14-Jul-17 SGP-94-5' Post E707047-03 Vapor 14-Jul-17 14-Jul-17 SGP-94-25' Post E707047-04 Vapor 14-Jul-17 14-Jul-17 SGP-108-5' Pre E707047-05 Vapor 14-Jul-17 14-Jul-17 SGP-108-25' Pre E707047-06 Vapor 14-Jul-17 14-Jul-17 SGP-108-5' Post E707047-07 Vapor 14-Jul-17 14-Jul-17 SGP-108-25' Post E707047-08 Vapor 14-Jul-17 14-Jul-17 SGP-101-5' Pre E707047-09 Vapor 14-Jul-17 14-Jul-17 SGP-101-25' Pre E707047-10 Vapor 14-Jul-17 14-Jul-17 SGP-101-5' Post E707047-11 Vapor 14-Jul-17 14-Jul-17 Page 3 of 17 2470 Impala Drive Carlsbad, CA 92010 760-804-9678 Phone 760-804-9159 Fax H&P Mobile Geochemistry Inc. TRC Solutions 4393 Viewridge Ave., Suite A San Diego, CA 92123 Project: TRC071217-SB1 Rev 2 Project Number: 280845/PH01 / Otay Ranch Village 3 Project Manager: Mr. Brian Kettmann Reported: 31-Jul-17 10:50 ANALYTICAL REPORT FOR SAMPLES Sample ID Laboratory ID Matrix SGP-101-5' Post Rep E707047-12 Vapor Date Sampled 14-Jul-17 Date Received 14-Jul-17 SGP-253-5' Pre E707047-13 Vapor 14-Jul-17 14-Jul-17 SGP-253-22' Pre E707047-14 Vapor 14-Jul-17 14-Jul-17 SGP-342-5' Pre E707047-15 Vapor 14-Jul-17 14-Jul-17 SGP-342-32' Pre E707047-16 Vapor 14-Jul-17 14-Jul-17 SGP-735-5' Pre E707047-17 Vapor 14-Jul-17 14-Jul-17 SGP-735-25' Pre E707047-18 Vapor 14-Jul-17 14-Jul-17 SGP-745-5' Pre E707047-19 Vapor 14-Jul-17 14-Jul-17 SGP-769-5' Pre E707047-20 Vapor 14-Jul-17 14-Jul-17 SGP-769-15' Pre E707047-21 Vapor 14-Jul-17 14-Jul-17 SGP-760-5' Pre E707047-22 Vapor 14-Jul-17 14-Jul-17 SGP-760-20' Pre E707047-23 Vapor 14-Jul-17 14-Jul-17 SGP-101-25' Post E707047-24 Vapor 14-Jul-17 14-Jul-17 Page 4 of 17 2470 Impala Drive Carlsbad, CA 92010 760-804-9678 Phone 760-804-9159 Fax H&P Mobile Geochemistry Inc. TRC Solutions 4393 Viewridge Ave., Suite A San Diego, CA 92123 Project: TRC071217-SB1 Rev 2 Project Number: 280845/PH01 / Otay Ranch Village 3 Project Manager: Mr. Brian Kettmann Reported: 31-Jul-17 10:50 Soil Gas and Vapor Analysis H&P Mobile Geochemistry, Inc. Analyte Result Reporting Limit Dilution Factor Batch Prepared Analyzed Method ppmv 1 EG71212 12-Jul-17 12-Jul-17 EPA 8015M " " " " " " ppmv 10 EG71212 12-Jul-17 12-Jul-17 EPA 8015M " 1 " " " " ppmv 2 EG71212 12-Jul-17 12-Jul-17 EPA 8015M " 1 " " " " ppmv 20 EG71212 12-Jul-17 12-Jul-17 EPA 8015M " 2 " " " " ppmv 1 EG71212 12-Jul-17 12-Jul-17 EPA 8015M " " " " " " ppmv 1 EG71212 12-Jul-17 12-Jul-17 EPA 8015M " " " " " " ppmv 20 EG71212 12-Jul-17 12-Jul-17 EPA 8015M " 1 " " " " Units Notes SGP-126-5' Pre (E707036-02) Vapor Sampled: 12-Jul-17 Received: 12-Jul-17 Methane Hexane (LCC) 800 ND 10 10 SGP-126-25' Pre (E707036-03) Vapor Sampled: 12-Jul-17 Received: 12-Jul-17 Methane Hexane (LCC) 4800 ND 100 10 SGP-126-5' Post (E707036-04) Vapor Sampled: 12-Jul-17 Received: 12-Jul-17 Methane Hexane (LCC) 1200 ND 20 10 SGP-126-25' Post (E707036-05) Vapor Sampled: 12-Jul-17 Received: 12-Jul-17 Methane Hexane (LCC) 17000 ND 200 20 SGP-699-5' Pre (E707036-06) Vapor Sampled: 12-Jul-17 Received: 12-Jul-17 Methane Hexane (LCC) 90 ND 10 10 SGP-699-25' Pre (E707036-07) Vapor Sampled: 12-Jul-17 Received: 12-Jul-17 Methane Hexane (LCC) 16 ND 10 10 SGP-699-5' Post (E707036-08) Vapor Sampled: 12-Jul-17 Received: 12-Jul-17 Methane Hexane (LCC) 6300 ND 200 10 Page 5 of 17 2470 Impala Drive Carlsbad, CA 92010 760-804-9678 Phone 760-804-9159 Fax H&P Mobile Geochemistry Inc. TRC Solutions 4393 Viewridge Ave., Suite A San Diego, CA 92123 Project: TRC071217-SB1 Rev 2 Project Number: 280845/PH01 / Otay Ranch Village 3 Project Manager: Mr. Brian Kettmann Reported: 31-Jul-17 10:50 Soil Gas and Vapor Analysis H&P Mobile Geochemistry, Inc. Analyte Result Reporting Limit Dilution Factor Batch Prepared Analyzed Method ppmv 20 EG71212 12-Jul-17 12-Jul-17 EPA 8015M " 1 " " " " ppmv 1 EG71212 12-Jul-17 12-Jul-17 EPA 8015M " " " " " " ppmv 40 EG71212 12-Jul-17 12-Jul-17 EPA 8015M " 1 " " " " ppmv 1 EG71313 12-Jul-17 12-Jul-17 EPA 8015M " " " " " " ppmv 10 EG71313 12-Jul-17 12-Jul-17 EPA 8015M " 1 " " " " ppmv 1 EG71313 12-Jul-17 12-Jul-17 EPA 8015M " " " " " " ppmv 1 EG71313 12-Jul-17 12-Jul-17 EPA 8015M " " " " " " Units Notes SGP-699-25' Post (E707036-09) Vapor Sampled: 12-Jul-17 Received: 12-Jul-17 Methane Hexane (LCC) 13000 ND 200 10 SGP-42-5' Pre (E707036-10) Vapor Sampled: 12-Jul-17 Received: 12-Jul-17 Methane Hexane (LCC) 18 ND 10 10 SGP-42-25' Pre (E707036-11) Vapor Sampled: 12-Jul-17 Received: 12-Jul-17 Methane Hexane (LCC) 31000 ND 400 10 SGP-42-5' Post (E707036-12) Vapor Sampled: 12-Jul-17 Received: 12-Jul-17 Methane Hexane (LCC) 71 ND 10 10 SGP-42-25' Post (E707036-13) Vapor Sampled: 12-Jul-17 Received: 12-Jul-17 Methane Hexane (LCC) 4200 ND 100 10 SGP-06-5' Pre (E707036-14) Vapor Sampled: 12-Jul-17 Received: 12-Jul-17 Methane Hexane (LCC) 47 ND 10 10 SGP-05-5' Pre (E707036-15) Vapor Sampled: 12-Jul-17 Received: 12-Jul-17 Methane Hexane (LCC) 52 ND 10 10 Page 6 of 17 2470 Impala Drive Carlsbad, CA 92010 760-804-9678 Phone 760-804-9159 Fax H&P Mobile Geochemistry Inc. TRC Solutions 4393 Viewridge Ave., Suite A San Diego, CA 92123 Project: TRC071217-SB1 Rev 2 Project Number: 280845/PH01 / Otay Ranch Village 3 Project Manager: Mr. Brian Kettmann Reported: 31-Jul-17 10:50 Soil Gas and Vapor Analysis H&P Mobile Geochemistry, Inc. Analyte Result Reporting Limit Dilution Factor Batch Prepared Analyzed Method ppmv 1 EG71313 12-Jul-17 12-Jul-17 EPA 8015M " " " " " " ppmv 1 EG71313 12-Jul-17 12-Jul-17 EPA 8015M " " " " " " ppmv 1 EG71313 12-Jul-17 12-Jul-17 EPA 8015M " " " " " " ppmv 1 EG71313 12-Jul-17 12-Jul-17 EPA 8015M " " " " " " ppmv 1 EG71312 13-Jul-17 13-Jul-17 EPA 8015M " " " " " " ppmv 1 EG71312 13-Jul-17 13-Jul-17 EPA 8015M " " " " " " ppmv 1 EG71312 13-Jul-17 13-Jul-17 EPA 8015M " " " " " " Units Notes SGP-05-5' Pre Rep (E707036-16) Vapor Sampled: 12-Jul-17 Received: 12-Jul-17 Methane Hexane (LCC) 49 ND 10 10 SGP-04-5' Pre (E707036-17) Vapor Sampled: 12-Jul-17 Received: 12-Jul-17 Methane Hexane (LCC) ND ND 10 10 SGP-04-13' Pre (E707036-18) Vapor Sampled: 12-Jul-17 Received: 12-Jul-17 Methane Hexane (LCC) 35 ND 10 10 SGP-05-13' Pre (E707036-19) Vapor Sampled: 12-Jul-17 Received: 12-Jul-17 Methane Hexane (LCC) 57 ND 10 10 SGP-01-5' Pre (E707041-01) Vapor Sampled: 13-Jul-17 Received: 13-Jul-17 Methane Hexane (LCC) 16 ND 10 10 SGP-01-10' Pre (E707041-02) Vapor Sampled: 13-Jul-17 Received: 13-Jul-17 Methane Hexane (LCC) 38 ND 10 10 SGP-02-5' Pre (E707041-03) Vapor Sampled: 13-Jul-17 Received: 13-Jul-17 Methane Hexane (LCC) ND ND 10 10 Page 7 of 17 2470 Impala Drive Carlsbad, CA 92010 760-804-9678 Phone 760-804-9159 Fax H&P Mobile Geochemistry Inc. TRC Solutions 4393 Viewridge Ave., Suite A San Diego, CA 92123 Project: TRC071217-SB1 Rev 2 Project Number: 280845/PH01 / Otay Ranch Village 3 Project Manager: Mr. Brian Kettmann Reported: 31-Jul-17 10:50 Soil Gas and Vapor Analysis H&P Mobile Geochemistry, Inc. Analyte Result Reporting Limit Dilution Factor Batch Prepared Analyzed Method ppmv 1 EG71312 13-Jul-17 13-Jul-17 EPA 8015M " " " " " " ppmv 1 EG71312 13-Jul-17 13-Jul-17 EPA 8015M " " " " " " ppmv 1 EG71312 13-Jul-17 13-Jul-17 EPA 8015M " " " " " " ppmv 1 EG71312 13-Jul-17 13-Jul-17 EPA 8015M " " " " " " ppmv 1 EG71312 13-Jul-17 13-Jul-17 EPA 8015M " " " " " " ppmv 1 EG71312 13-Jul-17 13-Jul-17 EPA 8015M " " " " " " ppmv 1 EG71312 13-Jul-17 13-Jul-17 EPA 8015M " " " " " " Units Notes SGP-02-15' Pre (E707041-04) Vapor Sampled: 13-Jul-17 Received: 13-Jul-17 Methane Hexane (LCC) 37 ND 10 10 SGP-02-32' Pre (E707041-05) Vapor Sampled: 13-Jul-17 Received: 13-Jul-17 Methane Hexane (LCC) 77 ND 10 10 SGP-03-5' Pre (E707041-06) Vapor Sampled: 13-Jul-17 Received: 13-Jul-17 Methane Hexane (LCC) 11 ND 10 10 SGP-03-15' Pre (E707041-07) Vapor Sampled: 13-Jul-17 Received: 13-Jul-17 Methane Hexane (LCC) 46 ND 10 10 SGP-03-23' Pre (E707041-08) Vapor Sampled: 13-Jul-17 Received: 13-Jul-17 Methane Hexane (LCC) 59 ND 10 10 SGP-03-23' Pre Rep (E707041-09) Vapor Sampled: 13-Jul-17 Received: 13-Jul-17 Methane Hexane (LCC) 59 ND 10 10 SGP-09-5' Pre (E707041-10) Vapor Sampled: 13-Jul-17 Received: 13-Jul-17 Methane Hexane (LCC) ND ND 10 10 Page 8 of 17 2470 Impala Drive Carlsbad, CA 92010 760-804-9678 Phone 760-804-9159 Fax H&P Mobile Geochemistry Inc. TRC Solutions 4393 Viewridge Ave., Suite A San Diego, CA 92123 Project: TRC071217-SB1 Rev 2 Project Number: 280845/PH01 / Otay Ranch Village 3 Project Manager: Mr. Brian Kettmann Reported: 31-Jul-17 10:50 Soil Gas and Vapor Analysis H&P Mobile Geochemistry, Inc. Analyte Result Reporting Limit Dilution Factor Batch Prepared Analyzed Method ppmv 1 EG71312 13-Jul-17 13-Jul-17 EPA 8015M " " " " " " ppmv 1 EG71312 13-Jul-17 13-Jul-17 EPA 8015M " " " " " " ppmv 1 EG71312 13-Jul-17 13-Jul-17 EPA 8015M " " " " " " ppmv 1 EG71312 13-Jul-17 13-Jul-17 EPA 8015M " " " " " " ppmv 1 EG71312 13-Jul-17 13-Jul-17 EPA 8015M " " " " " " ppmv 1 EG71312 13-Jul-17 13-Jul-17 EPA 8015M " " " " " " ppmv 1 EG71312 13-Jul-17 13-Jul-17 EPA 8015M " " " " " " Units Notes SGP-09-10' Pre (E707041-11) Vapor Sampled: 13-Jul-17 Received: 13-Jul-17 Methane Hexane (LCC) 36 ND 10 10 SGP-51-5' Pre (E707041-12) Vapor Sampled: 13-Jul-17 Received: 13-Jul-17 Methane Hexane (LCC) 14 ND 10 10 SGP-51-25' Pre (E707041-13) Vapor Sampled: 13-Jul-17 Received: 13-Jul-17 Methane Hexane (LCC) 110 ND 10 10 SGP-51-5' Post (E707041-14) Vapor Sampled: 13-Jul-17 Received: 13-Jul-17 Methane Hexane (LCC) ND ND 10 10 SGP-51-25' Post (E707041-15) Vapor Sampled: 13-Jul-17 Received: 13-Jul-17 Methane Hexane (LCC) 200 ND 10 10 SGP-196-5' Pre (E707041-16) Vapor Sampled: 13-Jul-17 Received: 13-Jul-17 Methane Hexane (LCC) 20 ND 10 10 SGP-196-30' Pre (E707041-17) Vapor Sampled: 13-Jul-17 Received: 13-Jul-17 Methane Hexane (LCC) 780 ND 10 10 Page 9 of 17 2470 Impala Drive Carlsbad, CA 92010 760-804-9678 Phone 760-804-9159 Fax H&P Mobile Geochemistry Inc. TRC Solutions 4393 Viewridge Ave., Suite A San Diego, CA 92123 Project: TRC071217-SB1 Rev 2 Project Number: 280845/PH01 / Otay Ranch Village 3 Project Manager: Mr. Brian Kettmann Reported: 31-Jul-17 10:50 Soil Gas and Vapor Analysis H&P Mobile Geochemistry, Inc. Analyte Result Reporting Limit Dilution Factor Batch Prepared Analyzed Method ppmv 1 EG71312 13-Jul-17 13-Jul-17 EPA 8015M " " " " " " ppmv 10 EG71312 13-Jul-17 13-Jul-17 EPA 8015M " 1 " " " " ppmv 2 EG71312 13-Jul-17 13-Jul-17 EPA 8015M " 1 " " " " ppmv 10 EG71312 13-Jul-17 13-Jul-17 EPA 8015M " 1 " " " " ppmv 1 EG71312 13-Jul-17 13-Jul-17 EPA 8015M " " " " " " ppmv 1 EG71312 13-Jul-17 13-Jul-17 EPA 8015M " " " " " " ppmv 1 EG71312 13-Jul-17 13-Jul-17 EPA 8015M " " " " " " Units Notes SGP-202-5' Pre (E707041-18) Vapor Sampled: 13-Jul-17 Received: 13-Jul-17 Methane Hexane (LCC) 330 ND 10 10 SGP-202-25' Pre (E707041-19) Vapor Sampled: 13-Jul-17 Received: 13-Jul-17 Methane Hexane (LCC) 4300 ND 100 10 SGP-202-5' Post (E707041-20) Vapor Sampled: 13-Jul-17 Received: 13-Jul-17 Methane Hexane (LCC) 1700 ND 20 10 SGP-202-25' Post (E707041-21) Vapor Sampled: 13-Jul-17 Received: 13-Jul-17 Methane Hexane (LCC) 4600 ND 100 10 SGP-211-5' Pre (E707041-22) Vapor Sampled: 13-Jul-17 Received: 13-Jul-17 Methane Hexane (LCC) 21 ND 10 10 SGP-211-25' Pre (E707041-23) Vapor Sampled: 13-Jul-17 Received: 13-Jul-17 Methane Hexane (LCC) 12 ND 10 10 SGP-211-5' Post (E707041-24) Vapor Sampled: 13-Jul-17 Received: 13-Jul-17 Methane Hexane (LCC) ND ND 10 10 Page 10 of 17 2470 Impala Drive Carlsbad, CA 92010 760-804-9678 Phone 760-804-9159 Fax H&P Mobile Geochemistry Inc. TRC Solutions 4393 Viewridge Ave., Suite A San Diego, CA 92123 Project: TRC071217-SB1 Rev 2 Project Number: 280845/PH01 / Otay Ranch Village 3 Project Manager: Mr. Brian Kettmann Reported: 31-Jul-17 10:50 Soil Gas and Vapor Analysis H&P Mobile Geochemistry, Inc. Analyte Result Reporting Limit Dilution Factor Batch Prepared Analyzed Method ppmv 20 EG71312 13-Jul-17 13-Jul-17 EPA 8015M " 1 " " " " ppmv 1 EG71312 13-Jul-17 13-Jul-17 EPA 8015M " " " " " " ppmv 1 EG71312 13-Jul-17 13-Jul-17 EPA 8015M " " " " " " ppmv 1 EG71408 14-Jul-17 14-Jul-17 EPA 8015M " " " " " " ppmv 10 EG71408 14-Jul-17 14-Jul-17 EPA 8015M " 1 " " " " ppmv 1 EG71408 14-Jul-17 14-Jul-17 EPA 8015M " " " " " " ppmv 20 EG71408 14-Jul-17 14-Jul-17 EPA 8015M " 1 " " " " Units Notes SGP-211-25' Post (E707041-25) Vapor Sampled: 13-Jul-17 Received: 13-Jul-17 Methane Hexane (LCC) 8800 ND 200 10 SGP-711-5' Pre (E707041-26) Vapor Sampled: 13-Jul-17 Received: 13-Jul-17 Methane Hexane (LCC) 10 ND 10 10 SGP-711-8' Pre (E707041-27) Vapor Sampled: 13-Jul-17 Received: 13-Jul-17 Methane Hexane (LCC) 12 ND 10 10 SGP-94-5' Pre (E707047-01) Vapor Sampled: 14-Jul-17 Received: 14-Jul-17 Methane Hexane (LCC) ND ND 10 10 SGP-94-25' Pre (E707047-02) Vapor Sampled: 14-Jul-17 Received: 14-Jul-17 Methane Hexane (LCC) 9200 ND 100 10 SGP-94-5' Post (E707047-03) Vapor Sampled: 14-Jul-17 Received: 14-Jul-17 Methane Hexane (LCC) ND ND 10 10 SGP-94-25' Post (E707047-04) Vapor Sampled: 14-Jul-17 Received: 14-Jul-17 Methane Hexane (LCC) 9400 ND 200 10 Page 11 of 17 2470 Impala Drive Carlsbad, CA 92010 760-804-9678 Phone 760-804-9159 Fax H&P Mobile Geochemistry Inc. TRC Solutions 4393 Viewridge Ave., Suite A San Diego, CA 92123 Project: TRC071217-SB1 Rev 2 Project Number: 280845/PH01 / Otay Ranch Village 3 Project Manager: Mr. Brian Kettmann Reported: 31-Jul-17 10:50 Soil Gas and Vapor Analysis H&P Mobile Geochemistry, Inc. Analyte Result Reporting Limit Dilution Factor Batch Prepared Analyzed Method ppmv 1 EG71408 14-Jul-17 14-Jul-17 EPA 8015M " " " " " " ppmv 1 EG71408 14-Jul-17 14-Jul-17 EPA 8015M " " " " " " ppmv 1 EG71408 14-Jul-17 14-Jul-17 EPA 8015M " " " " " " ppmv 2 EG71408 14-Jul-17 14-Jul-17 EPA 8015M " 1 " " " " ppmv 1 EG71408 14-Jul-17 14-Jul-17 EPA 8015M " " " " " " ppmv 1 EG71408 14-Jul-17 14-Jul-17 EPA 8015M " " " " " " ppmv 1 EG71408 14-Jul-17 14-Jul-17 EPA 8015M " " " " " " Units Notes SGP-108-5' Pre (E707047-05) Vapor Sampled: 14-Jul-17 Received: 14-Jul-17 Methane Hexane (LCC) 20 ND 10 10 SGP-108-25' Pre (E707047-06) Vapor Sampled: 14-Jul-17 Received: 14-Jul-17 Methane Hexane (LCC) 12 ND 10 10 SGP-108-5' Post (E707047-07) Vapor Sampled: 14-Jul-17 Received: 14-Jul-17 Methane Hexane (LCC) ND ND 10 10 SGP-108-25' Post (E707047-08) Vapor Sampled: 14-Jul-17 Received: 14-Jul-17 Methane Hexane (LCC) 1300 ND 20 10 SGP-101-5' Pre (E707047-09) Vapor Sampled: 14-Jul-17 Received: 14-Jul-17 Methane Hexane (LCC) 62 ND 10 10 SGP-101-25' Pre (E707047-10) Vapor Sampled: 14-Jul-17 Received: 14-Jul-17 Methane Hexane (LCC) 19 ND 10 10 SGP-101-5' Post (E707047-11) Vapor Sampled: 14-Jul-17 Received: 14-Jul-17 Methane Hexane (LCC) 18 ND 10 10 Page 12 of 17 2470 Impala Drive Carlsbad, CA 92010 760-804-9678 Phone 760-804-9159 Fax H&P Mobile Geochemistry Inc. TRC Solutions 4393 Viewridge Ave., Suite A San Diego, CA 92123 Project: TRC071217-SB1 Rev 2 Project Number: 280845/PH01 / Otay Ranch Village 3 Project Manager: Mr. Brian Kettmann Reported: 31-Jul-17 10:50 Soil Gas and Vapor Analysis H&P Mobile Geochemistry, Inc. Analyte Result Reporting Limit Dilution Factor Batch Prepared Analyzed Method ppmv 1 EG71408 14-Jul-17 14-Jul-17 EPA 8015M " " " " " " ppmv 1 EG71408 14-Jul-17 14-Jul-17 EPA 8015M " " " " " " ppmv 1 EG71408 14-Jul-17 14-Jul-17 EPA 8015M " " " " " " ppmv 1 EG71408 14-Jul-17 14-Jul-17 EPA 8015M " " " " " " ppmv 1 EG71408 14-Jul-17 14-Jul-17 EPA 8015M " " " " " " ppmv 1 EG71408 14-Jul-17 14-Jul-17 EPA 8015M " " " " " " ppmv 1 EG71408 14-Jul-17 14-Jul-17 EPA 8015M " " " " " " Units Notes SGP-101-5' Post Rep (E707047-12) Vapor Sampled: 14-Jul-17 Received: 14-Jul-17 Methane Hexane (LCC) 19 ND 10 10 SGP-253-5' Pre (E707047-13) Vapor Sampled: 14-Jul-17 Received: 14-Jul-17 Methane Hexane (LCC) ND ND 10 10 SGP-253-22' Pre (E707047-14) Vapor Sampled: 14-Jul-17 Received: 14-Jul-17 Methane Hexane (LCC) ND ND 10 10 SGP-342-5' Pre (E707047-15) Vapor Sampled: 14-Jul-17 Received: 14-Jul-17 Methane Hexane (LCC) 17 ND 10 10 SGP-342-32' Pre (E707047-16) Vapor Sampled: 14-Jul-17 Received: 14-Jul-17 Methane Hexane (LCC) ND ND 10 10 SGP-735-5' Pre (E707047-17) Vapor Sampled: 14-Jul-17 Received: 14-Jul-17 Methane Hexane (LCC) 12 ND 10 10 SGP-735-25' Pre (E707047-18) Vapor Sampled: 14-Jul-17 Received: 14-Jul-17 Methane Hexane (LCC) 82 ND 10 10 Page 13 of 17 2470 Impala Drive Carlsbad, CA 92010 760-804-9678 Phone 760-804-9159 Fax H&P Mobile Geochemistry Inc. TRC Solutions 4393 Viewridge Ave., Suite A San Diego, CA 92123 Project: TRC071217-SB1 Rev 2 Project Number: 280845/PH01 / Otay Ranch Village 3 Project Manager: Mr. Brian Kettmann Reported: 31-Jul-17 10:50 Soil Gas and Vapor Analysis H&P Mobile Geochemistry, Inc. Analyte Result Reporting Limit Dilution Factor Batch Prepared Analyzed Method ppmv 1 EG71408 14-Jul-17 14-Jul-17 EPA 8015M " " " " " " ppmv 1 EG71408 14-Jul-17 14-Jul-17 EPA 8015M " " " " " " ppmv 1 EG71408 14-Jul-17 14-Jul-17 EPA 8015M " " " " " " ppmv 1 EG71408 14-Jul-17 14-Jul-17 EPA 8015M " " " " " " ppmv 1 EG71408 14-Jul-17 14-Jul-17 EPA 8015M " " " " " " ppmv 10 EG71408 14-Jul-17 14-Jul-17 EPA 8015M " 1 " " " " Units Notes SGP-745-5' Pre (E707047-19) Vapor Sampled: 14-Jul-17 Received: 14-Jul-17 Methane Hexane (LCC) 14 ND 10 10 SGP-769-5' Pre (E707047-20) Vapor Sampled: 14-Jul-17 Received: 14-Jul-17 Methane Hexane (LCC) 17 ND 10 10 SGP-769-15' Pre (E707047-21) Vapor Sampled: 14-Jul-17 Received: 14-Jul-17 Methane Hexane (LCC) 46 ND 10 10 SGP-760-5' Pre (E707047-22) Vapor Sampled: 14-Jul-17 Received: 14-Jul-17 Methane Hexane (LCC) 14 ND 10 10 SGP-760-20' Pre (E707047-23) Vapor Sampled: 14-Jul-17 Received: 14-Jul-17 Methane Hexane (LCC) ND ND 10 10 SGP-101-25' Post (E707047-24) Vapor Sampled: 14-Jul-17 Received: 14-Jul-17 Methane Hexane (LCC) 4800 ND 100 10 Page 14 of 17 2470 Impala Drive Carlsbad, CA 92010 760-804-9678 Phone 760-804-9159 Fax H&P Mobile Geochemistry Inc. TRC Solutions 4393 Viewridge Ave., Suite A San Diego, CA 92123 Project: TRC071217-SB1 Rev 2 Project Number: 280845/PH01 / Otay Ranch Village 3 Project Manager: Mr. Brian Kettmann Reported: 31-Jul-17 10:50 Soil Gas and Vapor Analysis - Quality Control H&P Mobile Geochemistry, Inc. Analyte Result Reporting Limit Units Spike Level Source Result %REC %REC Limits RPD RPD Limit Notes Batch EG71212 - GC Prepared & Analyzed: 12-Jul-17 Blank (EG71212-BLK1) Hexane (LCC) Methane ND ND 10 10 ppmv " Batch EG71312 - GC Prepared & Analyzed: 13-Jul-17 Blank (EG71312-BLK1) Hexane (LCC) Methane ND ND 10 10 ppmv ND ND 10 10 ppmv " Prepared & Analyzed: 13-Jul-17 Blank (EG71312-BLK2) Hexane (LCC) Methane " Batch EG71313 - GC Prepared & Analyzed: 20-Jul-17 Blank (EG71313-BLK1) Hexane (LCC) Methane ND ND 10 10 ppmv ND ND 10 10 ppmv " Batch EG71408 - GC Prepared & Analyzed: 14-Jul-17 Blank (EG71408-BLK1) Hexane (LCC) Methane " Page 15 of 17 2470 Impala Drive Carlsbad, CA 92010 760-804-9678 Phone 760-804-9159 Fax H&P Mobile Geochemistry Inc. TRC Solutions 4393 Viewridge Ave., Suite A San Diego, CA 92123 Project: TRC071217-SB1 Rev 2 Project Number: 280845/PH01 / Otay Ranch Village 3 Project Manager: Mr. Brian Kettmann Reported: 31-Jul-17 10:50 Soil Gas and Vapor Analysis - Quality Control H&P Mobile Geochemistry, Inc. Analyte Result Reporting Limit Units Spike Level Source Result %REC %REC Limits RPD RPD Limit Notes Batch EG71408 - GC Prepared & Analyzed: 14-Jul-17 Blank (EG71408-BLK2) Hexane (LCC) Methane ND ND 10 10 ppmv " Page 16 of 17 2470 Impala Drive Carlsbad, CA 92010 760-804-9678 Phone 760-804-9159 Fax H&P Mobile Geochemistry Inc. TRC Solutions 4393 Viewridge Ave., Suite A San Diego, CA 92123 Project: TRC071217-SB1 Rev 2 Project Number: 280845/PH01 / Otay Ranch Village 3 Project Manager: Mr. Brian Kettmann Reported: 31-Jul-17 10:50 Notes and Definitions LCC Leak Check Compound ND Analyte NOT DETECTED at or above the reporting limit MDL Method Detection Limit %REC Percent Recovery RPD Relative Percent Difference Appendix H&P Mobile Geochemistry, Inc. is approved as an Environmental Testing Laboratory and Mobile Laboratory in accordance with the DoD -ELAP Program and ISO/IEC 17025:2005 programs, accreditation number 69070 for EPA Method TO-15, H&P Method TO-15, EPA Method 8260B and H&P 8260SV. H&P is approved by the State of Arizona as an Environmental Testing Laboratory and Mobile Laboratory , certification numbers AZM758 and AZ0779. H&P is approved by the State of California as an Environmental Laboratory and Mobile Laboratory in conformance with the Environmental Laboratory Accreditation Program (ELAP) for the category of Volatile and Semi-Volatile Organic Chemistry of Hazardous Waste, certification numbers 2740, 2741, 2743, 2744, 2745, 2754 & 2930. H&P is approved by the State of Florida Department of Health under the National Environmental Laboratory Accreditation Conference (NELAC) certification number E871100. The complete list of stationary and mobile laboratory certifications along with the fields of testing (FOTs) and analyte lists are available at www.handpmg.com/about/certifications. Page 17 of 17 Lab Client and Project Information ❑ 3-day Rush Ill CA Geotracker Global ID: ❑ 48-Hr Rush FIELD POINT NAME (if applicable) ___.4.64).. ,-,_er:77_ 50-P - 126 .-.5 ' PRE S P - /2t 25- P2 G - 4.P -126 -,5 ' f'66.7Scr-R- i 2. c., - 2s ' Pa;-,-- Approved " • h . .hed by: Approved/Relinquished by: _ Date: * -7'- / (z/, -7 SAMPLE TYPE CONTAINER Indoor Air (IA), Ambient _ DATE mm/dd/yy TIME 24hr clock t Air (AA), Subslab (SS), 400mU1U6L Summa, Soil Vapor (SV) _ 1 Tedlar, Tube, etc. . Idol /002 1020 i cItizt 9crP -co?? -5 ' P Pc 9qP -61q- 26 'Pee .SCi-P-61r - 5 ' Pofr :50-r-- 6” -26- ' PO-Cr Sci-P -42 -S`' Ave. ,, sis ...1. 046 . .......aly " ____ /122 /123 1141 //SO /1/1/ •... 4,„phyb -,.. Company: 'Approval constitutes as authorization to proceed with analysis and acceptance of conditions on back ;Z 05 vidi N/ ✓ z, /j 25 I V V,e _ 1\ 4/ ...L .k1 -4-: ,,i1.4 cV VI J 2 0 -I— 2(.1- j 2q- I Bsg 855 lig ?ii SCT - /OS -5' PRE' SCTP 108 - 25' PRC /85' 216 v, 251 2.14 VI ( 205 SGP-101-5 ` PRE SG- P-101-2S' pP-Er 207comm." Approved/Relinquis sr) I— CI FIELD POINT NAME (0 0 CONTAINER Temp: -//z/ // 7- 4-) A / Additional Instructions to Laboratory: • See Notes Below Receipt Notes/Tracking #: 7-Ogg E5 TO-15❑ TO-17m El 5-7 day Stnd El Standard Report ❑ Level III 0 Yes • No q Outside Lab: Sampler Information Turnaround Time -?-121 -7- - 513 2_ Receipt Gauge ID: (.1 Reporting Requirements -7--R CO Datet t„.1/17 Time: Received by. (3 •-s-N Company /lb( p Date: ZJON/Ji-D J. Time / 1 7/ f q- y. Company: Date: Time: Received by: Company: Date: Time: Approved/Relinquished by: Company: Date: Time: Received by: Company: Date: Time: Approved/Relinqui "/01 c i 7. 0 Lab Work Order #..----4,0 , Report E-Mail(s): AA 4_ 0,12.Ktiz T"— KETTMAt4 72 /13 Date Rec'd: 7_./ / 4 i 14. Control #: / Project Location: sqs 6-perz5)/ /5 la t a N ,K errAAA AtAl v 4/3 Sample Receipt (Lab Use Only) Project Name / # 2s 0 3 (sorbent tu be) , r< c. SO t—ur o AJ.S r TPHv as Gas Lab Client/Consultant: /-7 DATE: Page / 'of VAPOR I AIR Chain of Custody Methane by EPA8015m 7? *Approval constitutes as authorization to proceed with analysis and acceptance of conditions on back Rev 08/18/2014 IRc Lab Cl ent Project Manager: SouvrioA)_s ker,ivtA„.),j Bg I At.) Project Name / #: 230g457"pI-1 0 i Project Location: es?qs Lab Work Order # L- - 0 7- Lab Client City, State, Zip: Sample Intact: • Yes • No Phone Number: Receipt Gauge ID: • Standard Report ❑ Level III ❑ Level IV ❑ Other EDD: ❑ Excel EDD ❑ 5-7 day Stnd ❑ 24-Hr Rush Sampler(s): ❑ 3-day Rush ❑ Mobile Lab Signature: ❑ Other: Date: ❑ 48-Hr Rush 4-/ / Temp: Receipt Notes/Tracking #: TOR-A. G 5 4„:1; Ej See Notes Below -- U j/ 4- Lab PM Initials: 4- /14-/1-4- s'G-P-1(f)t.-5 1 P05r GC/-1,- 101 -5' Posr SG- P- 253 - 51 PRE AP Ap r ye. OA" b 4151111b am /y, / V // V V 1 /f Methane by EPA8015m LeakCheckCompound ❑ IPAEHe D DFA Aromatic/Al iphatic Fractions 8260SVm 0 TO- 15m E TPHv as Diesel (sorbent tube) TO- 17m ETO-15m 1129 2-4-I v 1.,/ 20- / / ;209 c D SC-P- 7-61-5' PRE ---Z ,/ / 1/ /155 PRE '4L. X kIl 372 (77/7 / 4 /8_5 , om414 i . A.,61.44/z_ Company F./ k I D Date: 7/14/ 11, Time: Time: 11tr Received by. Date: Time: Received by: Company: Date: Time: Date: Time. Received by Company: Date: Time: 1 ? is. ❑ 5 C/- P--i-i5-5' \-11 /a32_ /033 1048 /0219 I/2g cl}titeif E- ❑ SP-25-3- 22' PgE 3 C-P -342 -S I PRES---P - 34 2- 32 ' pgtS CT P -7-ES - 5 'Me" SCT P -x-35 -25 'prz . V / --.) /B5 24 7205 2 /6 2012112 25 1 v, /003 /004- R EP TPHv as Gas 8260SVm DATE mm/dd/yy Naphthalene 8260SV NAME (if applicable) SAMPLE NAME CONTAINER Indoor Air (IA), Ambient SIZE & TYPE TIME Air (AN, Subslab (SS), 400mU1 LAL Summa or Tedlar or Tube 24hr clock Soil Vapor (SV) ReceiptVac SAMPLE TYPE FIELD POINT Lab use only: II ppmv CONTAINER ID( fftttt) ❑ ppbv . nett .. Company: Approved/Relinquished by: Company: 'Approval constitutes as authorization to proceed with analysis and acceptance of conditions on back D ❑ µg/m3 ❑ ❑ p.g/L Oxygenates 8260SV ❑ T O- 15 * Preferred VOC units (please choose one): VO Cs StandardFu llList 8260SV❑ TO-15 ❑ Check if Project Analyte List is Attached VOCs Short List /Project List 8260SV ❑ TO- 15 Additional Instructions to Laboratory: 0 TO-15 Ej TO-17m I ❑ CA Geotracker Global ID: p. .(:) 4 Outside Lab: Sampler Information Turnaround Time Reporting Requirements / „, b( TA co 7-1211--S1 H&P Project # Report E-Mail(s): Lab Client Address: Page 2 of 3 7 Date RRecd:/ i WAX Ex' E rex, y 1/ Sample Receipt (Lab Use Only) Control #: /7.06 i 13 14 I ri- Lab Client and Project Information Lab Client/Consultant: DATE: VAPOR / AIR Chain of Custody FixedGases by ASTM D1945 CO2D02D N2 p 2470 Impala Drive, Carlsbad, CA 92010 & Field Office - Signal Hill, CA W handpmg.com E info@handpmg.com F 760.804.9159 P 760.804.9678 Mobile Geochemistry, Inc. Rev 08/18/2014 7p Mobile Geochemistry, Inc. 2470 Impala Drive, Carlsbad, CA 92010 & Field Office - Signal Hill, CA W handpmg.com E info@handpmg.com P 760.804.9678 F 760.804.9159 DATE: ' /4/ / /7" Page l of 3 VAPOR I AIR Chain of Custody Lab Client and Project Information Lab Client/Consultant: Project Name / #: T RC- So curl 0A5- Lab Client Project Manager: Project Location: Bg 0 &I k Err Nt A " NJ Lab Client Address: Sample Receipt (Lab Use Only) 2s 08Lis- / ID 1--iv I 8 et s- c_-__7. . ,v ErcZt y loti/ly Date Rec'd: H&P Project # Report E-Mail(s): Control #: 1-4,0c 1 5. 0.0/'.0/ : 7 7/1 / 4/, , -7---Rc, 0 4. 1 2... 1 -4_ cf3. 1 Lab Work Order # -0 7 a 4 -4-- Lab Client City, State, Zip: Sample Intact: • Yes • No 0 See Notes Below Phone Number: Receipt Gauge ID: ❑ 5-7 day Stnd ❑ 24-Hr Rush Sampler(s): ❑ Excel EDD ❑ Other EDD: ❑ 3-day Rush El. Mobile Lab Signature: ❑ CA Geotracker Global ID: ❑ 48-Hr Rush ❑ Other: Date: ,i-i,,-. /‘ _ 0/Z/2 -G- Receipt Notes/Tracking #: Lab PM Initials: i SC. "ID- 361- 15 pee GT-P- q6 et -S' FREci. r - 7 6,0 - 2 CY-Ze7 -P - 1 0 1 - 2S- CV 1233 -, 1 Met- ive t4,1 1 ,s,,,,ie- ...,, - 20525 1 2 4 -4- FixedGases by ASTM D1945 12-I t• 123 2 Methane by EPA8015m .+A4 /1.4_ DFA❑ IPA❑ He TIME 24hr clock 8260SVm ❑ TO-15m DATE mm/dd/yy V 1,/ 1 2 2/2- ki U ..) k x --I: — V 1/", / v ❑ ❑ S CONTAINER TPHv as Diesel (sorbent tube) TO-17m Aromatic/Aliphatic Fractions 8260SVm ❑ TO- 15m Leak CheckCompound SAMPLE NAME SAMPLE TYPE Indoor Air (IA), Ambient Air (AA), Subslab (SS), 400mU1 LAL Summa Soil Vapor (SV) or Tedlar or Tube 8260SV❑ TO-15❑ TO-17m FIELD POINT NAME (if applicable) TPHv as Gas ❑ ppmv Lab use only: Receipt Vac ❑ ppbv CONTAINER ID (#44#) ❑ l.ug/m3 SIZE & TYPE ❑ [ig/L Naphthalene * Preferred VOC units (please choose one): VOCs Standard Full List ❑ Check if Project Analyte List is Attached 8260SV❑ TO-15 Additional Instructions to Laboratory: Oxygenates /41// 1-- 8260SV❑ TO-15 ❑ Level IV Outside Lab: 8260SV❑ TO-15 ❑ Standard Report ❑ Level III Sampler Information CO2❑ 02❑ N2 Turnaround Time VOCs S hort List / Project List Reporting Requirements Temp: Approved/Relinquished by: Company: Company: *Approval constitutes as authorization to proceed with analysis and acceptance of conditions on back c ❑ ....,_______ Comat .... ❑ Approved/Relinquished by: N ❑ Approved/Reyiquishe Date Time: / ,.— Received by: 1 omAL-0 J . M 1 Company Date: iyi 11_ Time: )--(11f Date Time: Received by: Company: Date: Time: Date: Time: Received by: Company: Date: Time: Rev 08/18/2014 FMSOO4 Revision: 4 Revised: 3f22l'2017 Effective: 3f24f20]? Page 1 of 1 Mobile Geochemistry Inc. Log Sheet: Soil Vapor Sampling with Syringe kl H&PProject#: Date: Site Address: 3?18 Page: I of (1 Consultant: gfjg?dn) Rep(s): . 7W3 Consultant Rep(s): 1/ Scanned?amg Equipment Info Purge Volume lnforma ion Leak Check Compound El ?esampie my lnline Gauge lD#: PV Amount: Tubing Acloth saturatedwith 1.06 is placed around 2 ow :3 3.31:3? 27cm Sample Information Probe Specs Purge 8. Collection Information . Sam le Probe Tubin . Sand 0 Shm'? Leak Pur Pum Sam Ie ProbeVac '0 ?722% Lani 3% :23; 0:93;, 432?: min (mini, min 52% 1 5] I75 737i? Sf) ?15% 5 l; JZ 7:3 23 Zeal ?00 [Lav "36.0 921 2 3!:wa 07K 3530mm :3 a Is? lZ 22212 225 Cm 3.72 300 3 lilo ?11539 BO ma, 8 ?1 )2 2.23 it 225 1/ .263 zoo lm?lzoo (52/ 4 as So move or l2 2.25 lZ 2.25 700 at 5 SO iwzzs a YZ 2,21; '12 2:2-23 Iz 225 I/zscm Loo lad-IS zoo 7 SI). 20?? SO It'll ii :25 I2 2325? - zoo 8 Sb? Mil-1531 50 hr; 25 2-32 [7 2.gr?'xi 22: It 2.5 (zoo ?was: 10 50 ?50 2:9 2:7, .60 l7. '23 )1 52-21203 12.2.2: l3. az'g ECO L. 12 30 Iii56:; Site Notes such as weather visitors. scope deviations health safety Issues. etc. (When making sample speci?c notes, reference the line number above): HMciici-?Iak deck tensor/e CM Ai?kz Rafi-6?5 meg am! a? (514?!in [not $441143,? Mobile Geochemistry Inc. Iii. Sheet: Soil Vapor Sampling with Syringe Project C. LalZiWig 5 Site Address: 3635' {MI/nu Wm, Consultant: Consultant Rep(s): Date: Page: Rep(s): . 723% FMSOO4 Revision: 4 Revised: 3/22i2017 Etchtive: 3/24i20l7 Page Reviewed. 343;) Scanned: ?c5 ?it/{of Equipment Info lniine Gauge Pump 0910 Purge Volume Informa 'on PV Amount: PV Includes: Tubing '7 Egand 40% Dry Bent 50% Leak Check Compound A cloth saturated with LCC is pieced around '3 1.1.1IZ-TFA tubing connections and probe seal. This is El IPA done for all sampies unless othemrise notedJa/Oth er: W5 E1 1.1-DFA Resampie Key RS =2 in." 1. Feii ,4 3,1 swiftri?vlv?n Sample Information Probe Specs rin Sample Sam Ie Probe Tubing 9 Volume . Depth Length ID Time (CC) (ft) 2980 Sand Dia (in) as 2-15 24. 2:25 2.23 ll 2 it? a 2.23 1-2: Tubing Sand Dry OD Ht Point ID 7. 2, Bent Ht Die Purge Collection Information Purge Pump Sample ProbeVac Flow Rate Time FlowRate (mL/min) (min:sec) (mUmin) B450 100 i 260 200 5 Zoo 20c) Purge Ben" Vol (mL) Check 22, 2,2" 2 .25 2x15 .23 0 at" a - ?In. Site Notes such as weather, visitors. scope deviations. health safety issues. etc. (When making sample speci?c notes, reference the line number above): Mobile Geochemistry Inc. tl Log Sheet: Soil Vapor Sampling with Syringe Project #2 "j {(093 Site Address: gag (?95qu Date: Page: of FMSOO4 Revision: 4 Revised: 3/22/2017 EtTective: 312412017 Page 1 of 1 Re viewed: Q) Consultant: 72C Rep(s): K?ng? Consultant Rep(s): 3635C 9 mI-H?r" Scanned?'Uprds Equipment Info Purge Volume Information Leak Check Som'pound Ra camps-I Key Inline GaugelD#: ?7'28 PVAmount: PV Includes: ,lZ? Tubing Acloth saturatedwifh LCCI'splace-daround E11 5w g, 21 0'90 3 2/38"? 40%, ryBentSO/B E'Other: new Sample Information Probe Specs Purge Collection Information . Shutln ill: SI: Eli lit Hail 615}: are 1 20?: .SC 9% '1 .167 2.25 2.25 C) -- [Zr-v - 2 Ol- lo?e RS SQ l0 ii :18? )z 2.25- l'Z 2.2; (are '3 Pm Zb?Iz so 9333 '3 WC Its? 12 2.(22482:28 12 225? 5 SLIP no: $vo 2% ss $12, $2 sci ,lisii Fit flit2.25 5/ C) - (?ac ?ves-?Mm 231 301535 \?200 3 31.? 2% Fr. SC) 3:124:670 - 9 ~25 $26? 297' BO 8% 2'5 42?; ll 2:25 l2. 2-55 42w 10 Su?-?ips 2:09 so 5 )2 225 R223 0) - 4% - 1? F'ft' ZUA 50% 10 l?Z? vs, 2237? an 4 - 12 (LP- 3t.-g Vet 1455 501001,; ?5 is"; 12: 23-5) l? 212?; {Post} had no If} Site Notes such as weather, visitors sco deviations [health a. safety issues etc. (When makin Cd HP ?ecitic notes, reference the line number above): :93 HM 53m1 WM @acflae? Ol-Al-i-Has w/ Mfr? to mm ?im mow 10k? 5 .3 . Mobile Geochemistry Inc. ll: Log Sheet. Soil Vapor Sampling with Syringe FMSOO4 Revision: 4 Revised: 3/22/20] 7 Effective: 3/24l20 7 Page 1 of Project#: 35? Date: 7/ Site Address: 345 5,44,45,1ey) Page: ?2 of ?23 Consultant. {ef?j/ Rep(s): (It (wa- Reviewedi Consultant Rep(s): Scanned?brf?lb Equipment Info Purge Volume Information Leak Check Compound 13 Resampfe Key Inline Gauge /l PV Amount: PV Includes: D?i?ubing Aclofh saturated with LCCI?splacedaround Pump 01,10 .7 and 40% tubing connections andprobe seal. Thisis Dry Bent 50% done foraIIsampIes unless ofhenwse noted. ,El?Other: HWM F53 fa, Sample Information Probe Specs Purge Collection Information . Sam le Probe Tubin . Sand Shm'? Leak Pure Pum Sam Ie ProbeV sti?e ?333 .312: 3:32; 013:, vil?frifu $2353" (mini, eff: 1 Va. 205 SD 1008 28 a? I: 2.25 )z . 2 Post 20? 50 on 5 -l8?7 l? 2.12"; l? 273 224+ 42,00 ll'o? (:00 a5 W3 3 Ejl?Zl-?rl Smell ZS 2:7 is? I2 223 lZ 2.2.) Z943 (8ch 12-45 6m HCO 4 51,19- l?llg R: 151? 90 E, AMI-2: 3/273 I2 1/ [go-u 5 r3093 ilk? 30 m5 2; I: 2.75 C) 13ch GOLF m2. 8 Fm 259150 12202 2.5m ZEN 89 2'5 ,liS?? if 2'35 l'Z 12') 0' - - 2w, so sol/l lZ 2123 I2 22; IIrowa tea 9 shove/2I225 (260 ms we H20 10 5199?.50 65?? 25 it} 'le l?L 2:5 l?Z 2:45 c) (Zoo 12 205: 3?0 till Jig-I I2 385 233* 4533' ?30'7" 42"" ?47 H50 Site Notes such Aas weathe VI itors icope deviations health safety' Issues, etc. (When making sample specific notes, reference the line number above): ?37146" 0k Lu/ [713}? Iii/Lily} Mobile FMSOU4 Geochemistry Inc. Revision: 4 Revised: 3/2290]? . . Effective: 3/24f20l7 Log Sheet: Sorl Vapor Sampling Syringe Page 1 of] . r7 Project 198/ Date: g/ )3 Site Address: Zf??a?tl {100% PageConsultant: 77% Rep(s): [2 Aim 5 Reviewed:_0fiis_ Consultant Rep(s): :3655?: [2 Scanned: I ??35 Purge Volume Information Leak Check Compound Resampie Key Inline Gauge 2,3 PV Amount: PV Includes: ?Tubing A do?, saturated with LCC placed around 5-5-93 Pump . and 40% tubing connections and probe seal. This Dry Bent 50% done for all samples unless othenaw'se noted E?Other; WW 3% for Flt? Sample Information Probe Specs Purge Collection Information . Shut In . Probe Tubing Tubing Sand Sand Dry Dry Test Leak Purge Purge Pump PointlD . Depth Length OD (in) HI (in) Die Bent. Bent. 60 sec Check (ft) Hl(in.) Die (in. (V) ?5 ZF ?lg ?1 2357 Q25 i, ?do H20 9 - l'Z? 2-75 [5 2.75 0 ?eco ?5 7.25 45? Sample ProbeVac Vol (mL) Flow Rate Time Flow Rate Hg (mL/min) (min:sec) (lemin) H20 Site Notes such as weather, visitors, scope deviations. health safety issues, etc. (When making sample specific notes, reference the line number above): Ir . $8 Cg Mobile Geochemistry Inc. FMSOO4 Revision: 4 Revised: 3122/20]? Echctive: 3/24/20]? Log Sheet: Soil Vapor Sampling with Syringe page 0r-r H&PProject#: QiZl?Z/?g/ Date: SiteAddress: gigs (My' Page: fl of 3 Consultant: TKC git-kg) Rep(s): {my Reviewed-if; Consultant Rep(s): 6/ Scanneds?o ??35 Equipment Info Purge Volume Information Leak Check Compound El Resampfe Key, lnline Gauge 1?39; PVAmount: PV Includes: ,IZI?Tubing Ado?, saturatedwm, ?e Hpr?e a bib :5 58"? f2: :00? ',Dry Bent50% a 'E?OtheL/k?w haw?. Sample Information Probe Specs Purge Collection Information . Sample Probe Tubin . Sand 0 Dry ShUt'? Leak Purge Pum Sam Ie ProbeVac ?(Iii 53% 0:32., ei?je?c 6:3? mt: Willi, in?n- Eris 1 Shear?BIZ22; [269 2 sir-r4 ~29r7rr "2w SCI 55 f? ?57' it 7.2) ,2 2.yogi-2w 30 85% 5 q? Isl} I: 2.2; )2 2.25 (,7?er 200 (zoo 4 R?st?z/?l SO ?85?l 2% 211/ ,157 2.73 r2 1/ 25w ECO 12345 (556 1% 5 SambaIr? 7?5 2.25 72 2.2; 0 are 6 ?25 VI: fill; 30633 75 ,Ii? If 22?; re 22.75 0 7 55104353 Vast 80 mi! 5 r} if)? i? 715/? 22? 1/ 1/723? 2'60 Holidza: I6 3 SbP-io?i?aa?s Foal? 2% 550 Z5 IZ 7:5 171? 5,25 /zrcr4 [2 a; 4&0 a? 9 Fit 70530 6332 '1 2.23 It as 43022 10 Fre ?20? 25 ii 1.15 l? 2.25 0 (2.4-0 1? P?si I853) recs 6 .l6?i 17.7.25 l? 225? 62124200 17w i l-ZSPosl ill/7 50 ?5 ,m l? {2'5 a 225 zsqi 100 loo 9sz Site Notes suchQ?L as weather visitors, scope deviations, health safety Issues etc. (When making sample specific notes, reference the line number above): . @?ws 0x33: e-?r gcc/mm f9 {1me Cl Emil; Am mmuk-S-g?) EW- 23 17045619sz C933 oqgi?tt?a?) Vinnie o?I?a r-rr/ Hi? was Hi Mobiie . . Geochemistry Inc. Revised:3/22f20l7 . Effective: 3/24/2017 Log Sheet: SOII Vapor Sampling Pagelofl H&PProject#: rSEi Date: SiteAddress: gigs {kWh Page: of ?3 Consultant: I Rep(s): 7W 9 Reviewed.& Consultant Rep(s): 3255? <1 Equipment Info Purge Volume Information Leak Check Compound 1.1-DFA Resample Key ln'?ne GaugelD#: 7250/ PV Amount: Aclom saturated with LCC js pmed around RS ?a Sample Information Probe Specs Purge 8: Collection Information . Sam le Probe Tubin . Sand 0 8mm? Leak Pur Pum Sam Ie ProbeVac ?tie sit? ?at? 1123313331223, :31: ?8.33:5 052.132., 0:15)? ,vii?fifu $235.3 ("11:21:38, 7:235:13: at 1 So roe/4 5 is? 2.25 2.25 2914 4300 QC- Hie 2 203 5'5 1031' 7. If 2'25 (Z ?f 5260 3 21L 30 26 ?dbl )1 7.2911 7.71 I, - <24: 1 Swag-were 20'? so your gap-3112,3712? 242 50 'in )2 3'4 1'5? 1'7 173 17, (no 6 51,- 16-35315 Pairs-i 50 ?-23 jg? ?:25 1/ (9 -- 7 ?ip" ?35 55 ?2411 i3? 2?35 l'Z' 272'; 8 ?191?" Was-31% 200? SC my?) 5 1K Us 2?2 42h7,75 ,2 gram A 111 765 so 1er, )5 r1? 16?} I2 ?2.71 1'2 271 1622's 525 1/ *1 43cc ?llawa/?t?rc it? 30 3735 ?0 J39 )2 7.25 :2 2:75 a (are Site Notes such as weather, visitors. scope-cleiiations, health safety issues. etc. (When making sample specific notes, reference the line number above): Hi. Mobile Geochemistry Inc. gSh:eet Soil Vapor Sampling with Syringe FMSOU4 Revision: 4 Revised: 3929017 Effective: Page 1 of Project I 7? 3 l3 Date: Site Address. 51% 9. Page: of 3 Consultant: 5%7437 Rep(s): Revieweds? Consultant Rep(s): ?jfsf-(y Scanned?rr?s Equipment Info Purge Volume Information Leak Check Compound 1.1-DFA ?Ewemple Key lnline Gauge PV Amount: PV Includes: Wubing A cloth saturated with LCC is placed amund CI "if- .. 3 gi- Egg/W, Sample Information Point ID Probe Specs Probe Tubing Depth Length (ft) 2 Tubing Sand OD Ht l? 2, Sand Die Purge Collection Information 0 Shut In Berri Test 60 sec 7 2-75 Purge Pump Sample ProbeVac Flow Rate Time Flow Rate Hg (mUmin) (min:sec) (mUmin) ?34420 I2 #5 Leak Check (V) Bent. Ht Die C0 .93 MG Site Notes such as weather. visitors scope de e?ns prealth safety Issues etc. (When making sample speci?c notes reference the line number above): Mobile Geochemistry Inc. 31 July 2017 Mr. Brian Kettmann TRC Solutions 4393 Viewridge Ave., Suite A San Diego, CA 92123 H&P Project: TRC071717-L6 Rev Client Project: 280845/PH01 / Otay Ranch Village 3 Dear Mr. Brian Kettmann: Enclosed is the analytical report for the above referenced project. The data herein applies to samples as received by H&P Mobile Geochemistry, Inc. on 7/17/2017 -7/18/2017 which were analyzed in accordance with the attached Chain of Custody record(s) . The results for all sample analyses and required QA/QC analyses are presented in the following sections and summarized in the documents: • • • • • • • Sample Summary Case Narrative (if applicable) Sample Results Quality Control Summary Notes and Definitions / Appendix Chain of Custody Sampling Logs (if applicable) Unless otherwise noted, I certify that all analyses were performed and reviewed in compliance with our Quality Systems Manual and Standard Operating Procedures. This report shall not be reproduced, except in full, without the written approval of H &P Mobile Geochemistry, Inc. We at H&P Mobile Geochemistry, Inc. sincerely appreciate the opportunity to provide analytical services to you on this project. If you have any questions or concerns regarding this analytical report, please contact me at your convenience at 760-804-9678. Sincerely, Janis La Roux Laboratory Director H&P Mobile Geochemistry, Inc. is certified under the California ELAP and the National Environmental Laboratory Accreditation Conference (NELAC). H&P is approved as an Environmental Testing Laboratory and Mobile Laboratory in accordance with the DoD-ELAP Program and ISO/IEC 17025:2005 programs, accreditation number 69070 for EPA Method TO-15, H&P Method TO-15, EPA Method 8260B and H&P 8260SV. Quality. Accuracy. Experience. 2470 Impala Drive, Carlsbad, CA 92010 & Field Office - Signal Hill, CA P 1.800.834.9888 / 760.804.9678 F 760.804.9159 W handpmg.com Page 1 of 68 2470 Impala Drive Carlsbad, CA 92010 760-804-9678 Phone 760-804-9159 Fax H&P Mobile Geochemistry Inc. TRC Solutions 4393 Viewridge Ave., Suite A San Diego, CA 92123 Project: TRC071717-L6 Rev Project Number: 280845/PH01 / Otay Ranch Village 3 Project Manager: Mr. Brian Kettmann Reported: 31-Jul-17 12:20 ANALYTICAL REPORT FOR SAMPLES Sample ID Laboratory ID Matrix Date Sampled Date Received SGP-07 PRE E707054-01 Vapor 17-Jul-17 17-Jul-17 SGP-07 POST E707054-02 Vapor 17-Jul-17 17-Jul-17 SGP-816-3 E707054-03 Vapor 17-Jul-17 17-Jul-17 SGP-818-10 E707054-04 Vapor 17-Jul-17 17-Jul-17 SGP-818-5 E707054-05 Vapor 17-Jul-17 17-Jul-17 SGP-824-5 E707054-06 Vapor 17-Jul-17 17-Jul-17 SGP-817-10 E707054-07 Vapor 17-Jul-17 17-Jul-17 SGP-817-5 E707054-08 Vapor 17-Jul-17 17-Jul-17 SGP-817-5 REP E707054-09 Vapor 17-Jul-17 17-Jul-17 SGP-825-12 E707054-10 Vapor 17-Jul-17 17-Jul-17 SGP-825-5 E707054-11 Vapor 17-Jul-17 17-Jul-17 SGP-A-East-20 E707064-01 Vapor 18-Jul-17 18-Jul-17 SGP-A-East-5 E707064-02 Vapor 18-Jul-17 18-Jul-17 SGP-A-East-5 REP E707064-03 Vapor 18-Jul-17 18-Jul-17 SGP-A-West-9 E707064-04 Vapor 18-Jul-17 18-Jul-17 SGP-A-West-5 E707064-05 Vapor 18-Jul-17 18-Jul-17 SGP-223-25 E707064-06 Vapor 18-Jul-17 18-Jul-17 SGP-223-5 E707064-07 Vapor 18-Jul-17 18-Jul-17 SGP-324-25 E707064-08 Vapor 18-Jul-17 18-Jul-17 SGP-324-5 E707064-09 Vapor 18-Jul-17 18-Jul-17 SGP-335-30 E707064-10 Vapor 18-Jul-17 18-Jul-17 SGP-335-5 E707064-11 Vapor 18-Jul-17 18-Jul-17 SGP-352-25 E707064-12 Vapor 18-Jul-17 18-Jul-17 SGP-352-5 E707064-13 Vapor 18-Jul-17 18-Jul-17 SGP-73-25 E707064-14 Vapor 18-Jul-17 18-Jul-17 SGP-73-5 E707064-15 Vapor 18-Jul-17 18-Jul-17 SGP-60-25 E707064-16 Vapor 18-Jul-17 18-Jul-17 SGP-60-5 E707064-17 Vapor 18-Jul-17 18-Jul-17 Page 2 of 68 2470 Impala Drive Carlsbad, CA 92010 760-804-9678 Phone 760-804-9159 Fax H&P Mobile Geochemistry Inc. TRC Solutions 4393 Viewridge Ave., Suite A San Diego, CA 92123 Project: TRC071717-L6 Rev Project Number: 280845/PH01 / Otay Ranch Village 3 Project Manager: Mr. Brian Kettmann Reported: 31-Jul-17 12:20 This page is intentionally left blank. Page 3 of 68 2470 Impala Drive Carlsbad, CA 92010 760-804-9678 Phone 760-804-9159 Fax H&P Mobile Geochemistry Inc. TRC Solutions 4393 Viewridge Ave., Suite A San Diego, CA 92123 Project: TRC071717-L6 Rev Project Number: 280845/PH01 / Otay Ranch Village 3 Project Manager: Mr. Brian Kettmann Reported: 31-Jul-17 12:20 Soil Gas and Vapor Analysis H&P Mobile Geochemistry, Inc. Analyte Result MDL Reporting Limit Units Dilution Factor Batch Prepared Analyzed Method ppmv 40 EG71708 17-Jul-17 17-Jul-17 EPA 8015M 10 ppmv 1 EG71708 17-Jul-17 17-Jul-17 EPA 8015M 10 ppmv 1 EG71708 17-Jul-17 17-Jul-17 EPA 8015M 10 ppmv 1 EG71708 17-Jul-17 17-Jul-17 EPA 8015M 10 ppmv 1 EG71708 17-Jul-17 17-Jul-17 EPA 8015M 10 ppmv 1 EG71708 17-Jul-17 17-Jul-17 EPA 8015M 10 ppmv 1 EG71708 17-Jul-17 17-Jul-17 EPA 8015M 10 ppmv 1 EG71708 17-Jul-17 17-Jul-17 EPA 8015M ppmv 1 EG71708 17-Jul-17 17-Jul-17 EPA 8015M Notes SGP-07 PRE (E707054-01) Vapor Sampled: 17-Jul-17 Received: 17-Jul-17 Methane 38000 400 SGP-07 POST (E707054-02) Vapor Sampled: 17-Jul-17 Received: 17-Jul-17 Methane 490 SGP-816-3 (E707054-03) Vapor Sampled: 17-Jul-17 Received: 17-Jul-17 Methane 18 SGP-818-10 (E707054-04) Vapor Sampled: 17-Jul-17 Received: 17-Jul-17 Methane ND SGP-818-5 (E707054-05) Vapor Sampled: 17-Jul-17 Received: 17-Jul-17 Methane ND SGP-824-5 (E707054-06) Vapor Sampled: 17-Jul-17 Received: 17-Jul-17 Methane ND SGP-817-10 (E707054-07) Vapor Sampled: 17-Jul-17 Received: 17-Jul-17 Methane ND SGP-817-5 (E707054-08) Vapor Sampled: 17-Jul-17 Received: 17-Jul-17 Methane ND SGP-817-5 REP (E707054-09) Vapor Sampled: 17-Jul-17 Received: 17-Jul-17 Methane ND 10 Page 4 of 68 2470 Impala Drive Carlsbad, CA 92010 760-804-9678 Phone 760-804-9159 Fax H&P Mobile Geochemistry Inc. TRC Solutions 4393 Viewridge Ave., Suite A San Diego, CA 92123 Project: TRC071717-L6 Rev Project Number: 280845/PH01 / Otay Ranch Village 3 Project Manager: Mr. Brian Kettmann Reported: 31-Jul-17 12:20 Soil Gas and Vapor Analysis H&P Mobile Geochemistry, Inc. Analyte Result MDL Reporting Limit Units Dilution Factor Batch Prepared Analyzed Method 10 ppmv 1 EG71708 17-Jul-17 17-Jul-17 EPA 8015M 10 ppmv 1 EG71708 17-Jul-17 17-Jul-17 EPA 8015M ppmv 1 EG71807 18-Jul-17 18-Jul-17 EPA 8015M ppmv 1 EG71807 18-Jul-17 18-Jul-17 EPA 8015M ppmv 1 EG71807 18-Jul-17 18-Jul-17 EPA 8015M ppmv 1 EG71807 18-Jul-17 18-Jul-17 EPA 8015M ppmv 1 EG71807 18-Jul-17 18-Jul-17 EPA 8015M 10 ppmv 1 EG71807 18-Jul-17 18-Jul-17 EPA 8015M 10 ppmv 1 EG71807 18-Jul-17 18-Jul-17 EPA 8015M Notes SGP-825-12 (E707054-10) Vapor Sampled: 17-Jul-17 Received: 17-Jul-17 Methane ND SGP-825-5 (E707054-11) Vapor Sampled: 17-Jul-17 Received: 17-Jul-17 Methane ND SGP-A-East-20 (E707064-01) Vapor Sampled: 18-Jul-17 Received: 18-Jul-17 Methane 10 10 SGP-A-East-5 (E707064-02) Vapor Sampled: 18-Jul-17 Received: 18-Jul-17 Methane 37 10 SGP-A-East-5 REP (E707064-03) Vapor Sampled: 18-Jul-17 Received: 18-Jul-17 Methane 25 10 SGP-A-West-9 (E707064-04) Vapor Sampled: 18-Jul-17 Received: 18-Jul-17 Methane ND 10 SGP-A-West-5 (E707064-05) Vapor Sampled: 18-Jul-17 Received: 18-Jul-17 Methane ND 10 SGP-223-25 (E707064-06) Vapor Sampled: 18-Jul-17 Received: 18-Jul-17 Methane 150 SGP-223-5 (E707064-07) Vapor Sampled: 18-Jul-17 Received: 18-Jul-17 Methane ND Page 5 of 68 2470 Impala Drive Carlsbad, CA 92010 760-804-9678 Phone 760-804-9159 Fax H&P Mobile Geochemistry Inc. TRC Solutions 4393 Viewridge Ave., Suite A San Diego, CA 92123 Project: TRC071717-L6 Rev Project Number: 280845/PH01 / Otay Ranch Village 3 Project Manager: Mr. Brian Kettmann Reported: 31-Jul-17 12:20 Soil Gas and Vapor Analysis H&P Mobile Geochemistry, Inc. Analyte Result MDL Reporting Limit Units Dilution Factor Batch Prepared Analyzed Method 10 ppmv 1 EG71807 18-Jul-17 18-Jul-17 EPA 8015M 10 ppmv 1 EG71807 18-Jul-17 18-Jul-17 EPA 8015M 10 ppmv 1 EG71807 18-Jul-17 18-Jul-17 EPA 8015M 10 ppmv 1 EG71807 18-Jul-17 18-Jul-17 EPA 8015M 10 ppmv 1 EG71807 18-Jul-17 18-Jul-17 EPA 8015M 10 ppmv 1 EG71807 18-Jul-17 18-Jul-17 EPA 8015M 10 ppmv 1 EG71807 18-Jul-17 18-Jul-17 EPA 8015M 10 ppmv 1 EG71807 18-Jul-17 18-Jul-17 EPA 8015M 10 ppmv 1 EG71807 18-Jul-17 18-Jul-17 EPA 8015M Notes SGP-324-25 (E707064-08) Vapor Sampled: 18-Jul-17 Received: 18-Jul-17 Methane 140 SGP-324-5 (E707064-09) Vapor Sampled: 18-Jul-17 Received: 18-Jul-17 Methane ND SGP-335-30 (E707064-10) Vapor Sampled: 18-Jul-17 Received: 18-Jul-17 Methane 210 SGP-335-5 (E707064-11) Vapor Sampled: 18-Jul-17 Received: 18-Jul-17 Methane 430 SGP-352-25 (E707064-12) Vapor Sampled: 18-Jul-17 Received: 18-Jul-17 Methane 970 SGP-352-5 (E707064-13) Vapor Sampled: 18-Jul-17 Received: 18-Jul-17 Methane 68 SGP-73-25 (E707064-14) Vapor Sampled: 18-Jul-17 Received: 18-Jul-17 Methane ND SGP-73-5 (E707064-15) Vapor Sampled: 18-Jul-17 Received: 18-Jul-17 Methane ND SGP-60-25 (E707064-16) Vapor Sampled: 18-Jul-17 Received: 18-Jul-17 Methane 11 Page 6 of 68 2470 Impala Drive Carlsbad, CA 92010 760-804-9678 Phone 760-804-9159 Fax H&P Mobile Geochemistry Inc. TRC Solutions 4393 Viewridge Ave., Suite A San Diego, CA 92123 Project: TRC071717-L6 Rev Project Number: 280845/PH01 / Otay Ranch Village 3 Project Manager: Mr. Brian Kettmann Reported: 31-Jul-17 12:20 Soil Gas and Vapor Analysis H&P Mobile Geochemistry, Inc. Analyte Result MDL Reporting Limit Units Dilution Factor Batch Prepared Analyzed Method ppmv 1 EG71807 18-Jul-17 18-Jul-17 EPA 8015M Notes SGP-60-5 (E707064-17) Vapor Sampled: 18-Jul-17 Received: 18-Jul-17 Methane ND 10 Page 7 of 68 2470 Impala Drive Carlsbad, CA 92010 760-804-9678 Phone 760-804-9159 Fax H&P Mobile Geochemistry Inc. TRC Solutions 4393 Viewridge Ave., Suite A San Diego, CA 92123 Project: TRC071717-L6 Rev Project Number: 280845/PH01 / Otay Ranch Village 3 Project Manager: Mr. Brian Kettmann Reported: 31-Jul-17 12:20 Volatile Organic Compounds by H&P 8260SV H&P Mobile Geochemistry, Inc. Analyte Result MDL Reporting Limit Units Dilution Factor Batch Prepared Analyzed Method Notes SGP-816-3 (E707054-03) Vapor Sampled: 17-Jul-17 Received: 17-Jul-17 1,1-Difluoroethane (LCC) Dichlorodifluoromethane (F12) Chloromethane Vinyl chloride Bromomethane Chloroethane Trichlorofluoromethane (F11) 1,1-Dichloroethene Carbon disulfide 1,1,2 Trichlorotrifluoroethane (F113) Methylene chloride (Dichloromethane) Methyl tertiary-butyl ether (MTBE) trans-1,2-Dichloroethene Diisopropyl ether (DIPE) 1,1-Dichloroethane Ethyl tert-butyl ether (ETBE) 2,2-Dichloropropane cis-1,2-Dichloroethene Chloroform Bromochloromethane 1,1,1-Trichloroethane 1,1-Dichloropropene Carbon tetrachloride 1,2-Dichloroethane (EDC) Tertiary-amyl methyl ether (TAME) Benzene Trichloroethene 1,2-Dichloropropane Bromodichloromethane Dibromomethane cis-1,3-Dichloropropene Toluene trans-1,3-Dichloropropene 1,1,2-Trichloroethane 1,2-Dibromoethane (EDB) 1,3-Dichloropropane ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 20 ND ND ND ND ND ND ND ND ND ND 40 40 10 40 40 40 40 40 40 40 40 40 40 40 40 40 40 10 40 40 40 10 10 40 10 10 40 40 40 40 80 40 40 40 40 100 100 100 10 100 100 100 100 100 100 100 100 100 200 100 200 100 100 20 100 100 100 20 20 200 20 20 100 100 100 100 200 100 100 100 100 J- Report ug/m3 0.01 EG71707 17-Jul-17 17-Jul-17 H&P 8260SV " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " B-03, J Page 8 of 68 2470 Impala Drive Carlsbad, CA 92010 760-804-9678 Phone 760-804-9159 Fax H&P Mobile Geochemistry Inc. TRC Solutions 4393 Viewridge Ave., Suite A San Diego, CA 92123 Project: TRC071717-L6 Rev Project Number: 280845/PH01 / Otay Ranch Village 3 Project Manager: Mr. Brian Kettmann Reported: 31-Jul-17 12:20 Volatile Organic Compounds by H&P 8260SV H&P Mobile Geochemistry, Inc. Analyte Result MDL Reporting Limit Units Dilution Factor Batch Prepared Analyzed Method Notes SGP-816-3 (E707054-03) Vapor Sampled: 17-Jul-17 Received: 17-Jul-17 Tetrachloroethene Dibromochloromethane Chlorobenzene Ethylbenzene 1,1,1,2-Tetrachloroethane m,p-Xylene o-Xylene Styrene Bromoform Isopropylbenzene (Cumene) 1,1,2,2-Tetrachloroethane 1,2,3-Trichloropropane n-Propylbenzene Bromobenzene 1,3,5-Trimethylbenzene 2-Chlorotoluene 4-Chlorotoluene tert-Butylbenzene 1,2,4-Trimethylbenzene sec-Butylbenzene p-Isopropyltoluene 1,3-Dichlorobenzene 1,4-Dichlorobenzene n-Butylbenzene 1,2-Dichlorobenzene 1,2-Dibromo-3-chloropropane 1,2,4-Trichlorobenzene Hexachlorobutadiene Naphthalene 1,2,3-Trichlorobenzene Tertiary-butyl alcohol (TBA) Surrogate: Dibromofluoromethane Surrogate: 1,2-Dichloroethane-d4 Surrogate: Toluene-d8 Surrogate: 4-Bromofluorobenzene ND ND ND ND ND 90 ND ND ND ND ND ND ND ND ND ND ND ND 70 ND ND ND ND ND ND ND ND ND 50 ND ND 20 40 10 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 400 40 40 20 40 500 20 100 20 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 1000 100 100 20 100 1000 101 % 99.3 % 106 % 95.6 % J- Report ug/m3 0.01 EG71707 17-Jul-17 17-Jul-17 H&P 8260SV " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " 75-125 75-125 75-125 75-125 " " " " " " " " " " " " " " " " J J Page 9 of 68 2470 Impala Drive Carlsbad, CA 92010 760-804-9678 Phone 760-804-9159 Fax H&P Mobile Geochemistry Inc. TRC Solutions 4393 Viewridge Ave., Suite A San Diego, CA 92123 Project: TRC071717-L6 Rev Project Number: 280845/PH01 / Otay Ranch Village 3 Project Manager: Mr. Brian Kettmann Reported: 31-Jul-17 12:20 Volatile Organic Compounds by H&P 8260SV H&P Mobile Geochemistry, Inc. Analyte Result MDL Reporting Limit Units Dilution Factor Batch Prepared Analyzed Method SGP-818-10 (E707054-04) Vapor Sampled: 17-Jul-17 Received: 17-Jul-17 1,1-Difluoroethane (LCC) Dichlorodifluoromethane (F12) Chloromethane Vinyl chloride Bromomethane Chloroethane Trichlorofluoromethane (F11) 1,1-Dichloroethene 1,1,2 Trichlorotrifluoroethane (F113) Carbon disulfide Methylene chloride (Dichloromethane) Methyl tertiary-butyl ether (MTBE) trans-1,2-Dichloroethene Diisopropyl ether (DIPE) 1,1-Dichloroethane Ethyl tert-butyl ether (ETBE) 2,2-Dichloropropane cis-1,2-Dichloroethene Chloroform Bromochloromethane 1,1,1-Trichloroethane 1,1-Dichloropropene Carbon tetrachloride 1,2-Dichloroethane (EDC) Tertiary-amyl methyl ether (TAME) Benzene Trichloroethene 1,2-Dichloropropane Bromodichloromethane Dibromomethane cis-1,3-Dichloropropene Toluene trans-1,3-Dichloropropene 1,1,2-Trichloroethane 1,2-Dibromoethane (EDB) 1,3-Dichloropropane ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 30 ND ND ND ND ND 210 ND ND ND ND 40 40 10 40 40 40 40 40 40 40 40 40 40 40 40 40 40 10 40 40 40 10 10 40 10 10 40 40 40 40 80 40 40 40 40 100 100 100 10 100 100 100 100 100 100 100 100 100 200 100 200 100 100 20 100 100 100 20 20 200 20 20 100 100 100 100 200 100 100 100 100 Notes J- Report ug/m3 0.01 EG71707 17-Jul-17 17-Jul-17 H&P 8260SV " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " B-03 Page 10 of 68 2470 Impala Drive Carlsbad, CA 92010 760-804-9678 Phone 760-804-9159 Fax H&P Mobile Geochemistry Inc. TRC Solutions 4393 Viewridge Ave., Suite A San Diego, CA 92123 Project: TRC071717-L6 Rev Project Number: 280845/PH01 / Otay Ranch Village 3 Project Manager: Mr. Brian Kettmann Reported: 31-Jul-17 12:20 Volatile Organic Compounds by H&P 8260SV H&P Mobile Geochemistry, Inc. Analyte Result MDL Reporting Limit Units Dilution Factor Batch Prepared Analyzed Method SGP-818-10 (E707054-04) Vapor Sampled: 17-Jul-17 Received: 17-Jul-17 Tetrachloroethene Dibromochloromethane Chlorobenzene Ethylbenzene 1,1,1,2-Tetrachloroethane m,p-Xylene o-Xylene Styrene Bromoform Isopropylbenzene (Cumene) 1,1,2,2-Tetrachloroethane 1,2,3-Trichloropropane n-Propylbenzene Bromobenzene 1,3,5-Trimethylbenzene 2-Chlorotoluene 4-Chlorotoluene tert-Butylbenzene 1,2,4-Trimethylbenzene sec-Butylbenzene p-Isopropyltoluene 1,3-Dichlorobenzene 1,4-Dichlorobenzene n-Butylbenzene 1,2-Dichlorobenzene 1,2-Dibromo-3-chloropropane 1,2,4-Trichlorobenzene Hexachlorobutadiene Naphthalene 1,2,3-Trichlorobenzene Tertiary-butyl alcohol (TBA) Surrogate: Dibromofluoromethane Surrogate: 1,2-Dichloroethane-d4 Surrogate: Toluene-d8 Surrogate: 4-Bromofluorobenzene ND ND ND 70 ND 320 120 ND ND ND ND ND ND ND ND ND ND ND 150 ND ND ND ND ND ND ND ND ND ND ND ND 20 40 10 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 400 40 40 20 40 500 20 100 20 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 1000 100 100 20 100 1000 99.4 % 95.6 % 106 % 95.7 % Notes J- Report ug/m3 0.01 EG71707 17-Jul-17 17-Jul-17 H&P 8260SV " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " 75-125 75-125 75-125 75-125 " " " " " " " " " " " " " " " " J Page 11 of 68 2470 Impala Drive Carlsbad, CA 92010 760-804-9678 Phone 760-804-9159 Fax H&P Mobile Geochemistry Inc. TRC Solutions 4393 Viewridge Ave., Suite A San Diego, CA 92123 Project: TRC071717-L6 Rev Project Number: 280845/PH01 / Otay Ranch Village 3 Project Manager: Mr. Brian Kettmann Reported: 31-Jul-17 12:20 Volatile Organic Compounds by H&P 8260SV H&P Mobile Geochemistry, Inc. Analyte Result MDL Reporting Limit Units Dilution Factor Batch Prepared Analyzed Method SGP-818-5 (E707054-05) Vapor Sampled: 17-Jul-17 Received: 17-Jul-17 1,1-Difluoroethane (LCC) Dichlorodifluoromethane (F12) Chloromethane Vinyl chloride Bromomethane Chloroethane Trichlorofluoromethane (F11) 1,1-Dichloroethene Carbon disulfide 1,1,2 Trichlorotrifluoroethane (F113) Methylene chloride (Dichloromethane) Methyl tertiary-butyl ether (MTBE) trans-1,2-Dichloroethene Diisopropyl ether (DIPE) 1,1-Dichloroethane Ethyl tert-butyl ether (ETBE) 2,2-Dichloropropane cis-1,2-Dichloroethene Chloroform Bromochloromethane 1,1,1-Trichloroethane 1,1-Dichloropropene Carbon tetrachloride 1,2-Dichloroethane (EDC) Tertiary-amyl methyl ether (TAME) Benzene Trichloroethene 1,2-Dichloropropane Bromodichloromethane Dibromomethane cis-1,3-Dichloropropene Toluene trans-1,3-Dichloropropene 1,1,2-Trichloroethane 1,2-Dibromoethane (EDB) 1,3-Dichloropropane ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 30 ND ND ND ND ND 140 ND ND ND ND 40 40 10 40 40 40 40 40 40 40 40 40 40 40 40 40 40 10 40 40 40 10 10 40 10 10 40 40 40 40 80 40 40 40 40 100 100 100 10 100 100 100 100 100 100 100 100 100 200 100 200 100 100 20 100 100 100 20 20 200 20 20 100 100 100 100 200 100 100 100 100 Notes J- Report ug/m3 0.01 EG71707 17-Jul-17 17-Jul-17 H&P 8260SV " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " B-03 J Page 12 of 68 2470 Impala Drive Carlsbad, CA 92010 760-804-9678 Phone 760-804-9159 Fax H&P Mobile Geochemistry Inc. TRC Solutions 4393 Viewridge Ave., Suite A San Diego, CA 92123 Project: TRC071717-L6 Rev Project Number: 280845/PH01 / Otay Ranch Village 3 Project Manager: Mr. Brian Kettmann Reported: 31-Jul-17 12:20 Volatile Organic Compounds by H&P 8260SV H&P Mobile Geochemistry, Inc. Analyte Result MDL Reporting Limit Units Dilution Factor Batch Prepared Analyzed Method SGP-818-5 (E707054-05) Vapor Sampled: 17-Jul-17 Received: 17-Jul-17 Tetrachloroethene Dibromochloromethane Chlorobenzene Ethylbenzene 1,1,1,2-Tetrachloroethane m,p-Xylene o-Xylene Styrene Bromoform Isopropylbenzene (Cumene) 1,1,2,2-Tetrachloroethane 1,2,3-Trichloropropane n-Propylbenzene Bromobenzene 1,3,5-Trimethylbenzene 2-Chlorotoluene 4-Chlorotoluene tert-Butylbenzene 1,2,4-Trimethylbenzene sec-Butylbenzene p-Isopropyltoluene 1,3-Dichlorobenzene 1,4-Dichlorobenzene n-Butylbenzene 1,2-Dichlorobenzene 1,2-Dibromo-3-chloropropane 1,2,4-Trichlorobenzene Hexachlorobutadiene Naphthalene 1,2,3-Trichlorobenzene Tertiary-butyl alcohol (TBA) Surrogate: Dibromofluoromethane Surrogate: 1,2-Dichloroethane-d4 Surrogate: Toluene-d8 Surrogate: 4-Bromofluorobenzene ND ND ND 50 ND 230 110 ND ND ND ND ND ND ND ND ND ND ND 160 ND ND ND ND ND ND ND ND ND ND ND ND 20 40 10 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 400 40 40 20 40 500 20 100 20 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 1000 100 100 20 100 1000 104 % 106 % 108 % 91.8 % Notes J- Report ug/m3 0.01 EG71707 17-Jul-17 17-Jul-17 H&P 8260SV " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " 75-125 75-125 75-125 75-125 " " " " " " " " " " " " " " " " J Page 13 of 68 2470 Impala Drive Carlsbad, CA 92010 760-804-9678 Phone 760-804-9159 Fax H&P Mobile Geochemistry Inc. TRC Solutions 4393 Viewridge Ave., Suite A San Diego, CA 92123 Project: TRC071717-L6 Rev Project Number: 280845/PH01 / Otay Ranch Village 3 Project Manager: Mr. Brian Kettmann Reported: 31-Jul-17 12:20 Volatile Organic Compounds by H&P 8260SV H&P Mobile Geochemistry, Inc. Analyte Result MDL Reporting Limit Units Dilution Factor Batch Prepared Analyzed Method SGP-824-5 (E707054-06) Vapor Sampled: 17-Jul-17 Received: 17-Jul-17 1,1-Difluoroethane (LCC) Dichlorodifluoromethane (F12) Chloromethane Vinyl chloride Bromomethane Chloroethane Trichlorofluoromethane (F11) 1,1-Dichloroethene 1,1,2 Trichlorotrifluoroethane (F113) Carbon disulfide Methylene chloride (Dichloromethane) Methyl tertiary-butyl ether (MTBE) trans-1,2-Dichloroethene Diisopropyl ether (DIPE) 1,1-Dichloroethane Ethyl tert-butyl ether (ETBE) 2,2-Dichloropropane cis-1,2-Dichloroethene Chloroform Bromochloromethane 1,1,1-Trichloroethane 1,1-Dichloropropene Carbon tetrachloride 1,2-Dichloroethane (EDC) Tertiary-amyl methyl ether (TAME) Benzene Trichloroethene 1,2-Dichloropropane Bromodichloromethane Dibromomethane cis-1,3-Dichloropropene Toluene trans-1,3-Dichloropropene 1,1,2-Trichloroethane 1,2-Dibromoethane (EDB) 1,3-Dichloropropane ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 10 ND ND ND ND ND 90 ND ND ND ND 40 40 10 40 40 40 40 40 40 40 40 40 40 40 40 40 40 10 40 40 40 10 10 40 10 10 40 40 40 40 80 40 40 40 40 100 100 100 10 100 100 100 100 100 100 100 100 100 200 100 200 100 100 20 100 100 100 20 20 200 20 20 100 100 100 100 200 100 100 100 100 Notes J- Report ug/m3 0.01 EG71707 17-Jul-17 17-Jul-17 H&P 8260SV " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " B-03, J J Page 14 of 68 2470 Impala Drive Carlsbad, CA 92010 760-804-9678 Phone 760-804-9159 Fax H&P Mobile Geochemistry Inc. TRC Solutions 4393 Viewridge Ave., Suite A San Diego, CA 92123 Project: TRC071717-L6 Rev Project Number: 280845/PH01 / Otay Ranch Village 3 Project Manager: Mr. Brian Kettmann Reported: 31-Jul-17 12:20 Volatile Organic Compounds by H&P 8260SV H&P Mobile Geochemistry, Inc. Analyte Result MDL Reporting Limit Units Dilution Factor Batch Prepared Analyzed Method SGP-824-5 (E707054-06) Vapor Sampled: 17-Jul-17 Received: 17-Jul-17 Tetrachloroethene Dibromochloromethane Chlorobenzene Ethylbenzene 1,1,1,2-Tetrachloroethane m,p-Xylene o-Xylene Styrene Bromoform Isopropylbenzene (Cumene) 1,1,2,2-Tetrachloroethane 1,2,3-Trichloropropane n-Propylbenzene Bromobenzene 1,3,5-Trimethylbenzene 2-Chlorotoluene 4-Chlorotoluene tert-Butylbenzene 1,2,4-Trimethylbenzene sec-Butylbenzene p-Isopropyltoluene 1,3-Dichlorobenzene 1,4-Dichlorobenzene n-Butylbenzene 1,2-Dichlorobenzene 1,2-Dibromo-3-chloropropane 1,2,4-Trichlorobenzene Hexachlorobutadiene Naphthalene 1,2,3-Trichlorobenzene Tertiary-butyl alcohol (TBA) Surrogate: Dibromofluoromethane Surrogate: 1,2-Dichloroethane-d4 Surrogate: Toluene-d8 Surrogate: 4-Bromofluorobenzene ND ND ND 40 ND 190 90 ND ND ND ND ND ND ND 60 ND ND ND 160 ND ND ND ND ND ND ND ND ND ND ND ND 20 40 10 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 400 40 40 20 40 500 20 100 20 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 1000 100 100 20 100 1000 102 % 103 % 106 % 99.6 % Notes J- Report ug/m3 0.01 EG71707 17-Jul-17 17-Jul-17 H&P 8260SV " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " 75-125 75-125 75-125 75-125 " " " " " " " " " " " " " " " " J J J Page 15 of 68 2470 Impala Drive Carlsbad, CA 92010 760-804-9678 Phone 760-804-9159 Fax H&P Mobile Geochemistry Inc. TRC Solutions 4393 Viewridge Ave., Suite A San Diego, CA 92123 Project: TRC071717-L6 Rev Project Number: 280845/PH01 / Otay Ranch Village 3 Project Manager: Mr. Brian Kettmann Reported: 31-Jul-17 12:20 Volatile Organic Compounds by H&P 8260SV H&P Mobile Geochemistry, Inc. Analyte Result MDL Reporting Limit Units Dilution Factor Batch Prepared Analyzed Method SGP-817-10 (E707054-07) Vapor Sampled: 17-Jul-17 Received: 17-Jul-17 1,1-Difluoroethane (LCC) Dichlorodifluoromethane (F12) Chloromethane Vinyl chloride Bromomethane Chloroethane Trichlorofluoromethane (F11) 1,1-Dichloroethene Carbon disulfide 1,1,2 Trichlorotrifluoroethane (F113) Methylene chloride (Dichloromethane) Methyl tertiary-butyl ether (MTBE) trans-1,2-Dichloroethene Diisopropyl ether (DIPE) 1,1-Dichloroethane Ethyl tert-butyl ether (ETBE) 2,2-Dichloropropane cis-1,2-Dichloroethene Chloroform Bromochloromethane 1,1,1-Trichloroethane 1,1-Dichloropropene Carbon tetrachloride 1,2-Dichloroethane (EDC) Tertiary-amyl methyl ether (TAME) Benzene Trichloroethene 1,2-Dichloropropane Bromodichloromethane Dibromomethane cis-1,3-Dichloropropene Toluene trans-1,3-Dichloropropene 1,1,2-Trichloroethane 1,2-Dibromoethane (EDB) 1,3-Dichloropropane ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 20 ND ND ND ND ND 110 ND ND ND ND 40 40 10 40 40 40 40 40 40 40 40 40 40 40 40 40 40 10 40 40 40 10 10 40 10 10 40 40 40 40 80 40 40 40 40 100 100 100 10 100 100 100 100 100 100 100 100 100 200 100 200 100 100 20 100 100 100 20 20 200 20 20 100 100 100 100 200 100 100 100 100 Notes J- Report ug/m3 0.01 EG71707 17-Jul-17 17-Jul-17 H&P 8260SV " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " B-03, J J Page 16 of 68 2470 Impala Drive Carlsbad, CA 92010 760-804-9678 Phone 760-804-9159 Fax H&P Mobile Geochemistry Inc. TRC Solutions 4393 Viewridge Ave., Suite A San Diego, CA 92123 Project: TRC071717-L6 Rev Project Number: 280845/PH01 / Otay Ranch Village 3 Project Manager: Mr. Brian Kettmann Reported: 31-Jul-17 12:20 Volatile Organic Compounds by H&P 8260SV H&P Mobile Geochemistry, Inc. Analyte Result MDL Reporting Limit Units Dilution Factor Batch Prepared Analyzed Method SGP-817-10 (E707054-07) Vapor Sampled: 17-Jul-17 Received: 17-Jul-17 Tetrachloroethene Dibromochloromethane Chlorobenzene Ethylbenzene 1,1,1,2-Tetrachloroethane m,p-Xylene o-Xylene Styrene Bromoform Isopropylbenzene (Cumene) 1,1,2,2-Tetrachloroethane 1,2,3-Trichloropropane n-Propylbenzene Bromobenzene 1,3,5-Trimethylbenzene 2-Chlorotoluene 4-Chlorotoluene tert-Butylbenzene 1,2,4-Trimethylbenzene sec-Butylbenzene p-Isopropyltoluene 1,3-Dichlorobenzene 1,4-Dichlorobenzene n-Butylbenzene 1,2-Dichlorobenzene 1,2-Dibromo-3-chloropropane 1,2,4-Trichlorobenzene Hexachlorobutadiene Naphthalene 1,2,3-Trichlorobenzene Tertiary-butyl alcohol (TBA) Surrogate: Dibromofluoromethane Surrogate: 1,2-Dichloroethane-d4 Surrogate: Toluene-d8 Surrogate: 4-Bromofluorobenzene ND ND ND 40 ND 170 70 ND ND ND ND ND ND ND ND ND ND ND 80 ND ND ND ND ND ND ND ND ND 20 ND ND 20 40 10 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 400 40 40 20 40 500 20 100 20 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 1000 100 100 20 100 1000 101 % 105 % 108 % 95.3 % Notes J- Report ug/m3 0.01 EG71707 17-Jul-17 17-Jul-17 H&P 8260SV " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " 75-125 75-125 75-125 75-125 " " " " " " " " " " " " " " " " J J J Page 17 of 68 2470 Impala Drive Carlsbad, CA 92010 760-804-9678 Phone 760-804-9159 Fax H&P Mobile Geochemistry Inc. TRC Solutions 4393 Viewridge Ave., Suite A San Diego, CA 92123 Project: TRC071717-L6 Rev Project Number: 280845/PH01 / Otay Ranch Village 3 Project Manager: Mr. Brian Kettmann Reported: 31-Jul-17 12:20 Volatile Organic Compounds by H&P 8260SV H&P Mobile Geochemistry, Inc. Analyte Result MDL Reporting Limit Units Dilution Factor Batch Prepared Analyzed Method SGP-817-5 (E707054-08) Vapor Sampled: 17-Jul-17 Received: 17-Jul-17 1,1-Difluoroethane (LCC) Dichlorodifluoromethane (F12) Chloromethane Vinyl chloride Bromomethane Chloroethane Trichlorofluoromethane (F11) 1,1-Dichloroethene 1,1,2 Trichlorotrifluoroethane (F113) Carbon disulfide Methylene chloride (Dichloromethane) Methyl tertiary-butyl ether (MTBE) trans-1,2-Dichloroethene Diisopropyl ether (DIPE) 1,1-Dichloroethane Ethyl tert-butyl ether (ETBE) 2,2-Dichloropropane cis-1,2-Dichloroethene Chloroform Bromochloromethane 1,1,1-Trichloroethane 1,1-Dichloropropene Carbon tetrachloride 1,2-Dichloroethane (EDC) Tertiary-amyl methyl ether (TAME) Benzene Trichloroethene 1,2-Dichloropropane Bromodichloromethane Dibromomethane cis-1,3-Dichloropropene Toluene trans-1,3-Dichloropropene 1,1,2-Trichloroethane 1,2-Dibromoethane (EDB) 1,3-Dichloropropane ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 10 ND ND ND ND ND 90 ND ND ND ND 40 40 10 40 40 40 40 40 40 40 40 40 40 40 40 40 40 10 40 40 40 10 10 40 10 10 40 40 40 40 80 40 40 40 40 100 100 100 10 100 100 100 100 100 100 100 100 100 200 100 200 100 100 20 100 100 100 20 20 200 20 20 100 100 100 100 200 100 100 100 100 Notes J- Report ug/m3 0.01 EG71707 17-Jul-17 17-Jul-17 H&P 8260SV " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " B-03, J J Page 18 of 68 2470 Impala Drive Carlsbad, CA 92010 760-804-9678 Phone 760-804-9159 Fax H&P Mobile Geochemistry Inc. TRC Solutions 4393 Viewridge Ave., Suite A San Diego, CA 92123 Project: TRC071717-L6 Rev Project Number: 280845/PH01 / Otay Ranch Village 3 Project Manager: Mr. Brian Kettmann Reported: 31-Jul-17 12:20 Volatile Organic Compounds by H&P 8260SV H&P Mobile Geochemistry, Inc. Analyte Result MDL Reporting Limit Units Dilution Factor Batch Prepared Analyzed Method SGP-817-5 (E707054-08) Vapor Sampled: 17-Jul-17 Received: 17-Jul-17 Tetrachloroethene Dibromochloromethane Chlorobenzene Ethylbenzene 1,1,1,2-Tetrachloroethane m,p-Xylene o-Xylene Styrene Bromoform Isopropylbenzene (Cumene) 1,1,2,2-Tetrachloroethane 1,2,3-Trichloropropane n-Propylbenzene Bromobenzene 1,3,5-Trimethylbenzene 2-Chlorotoluene 4-Chlorotoluene tert-Butylbenzene 1,2,4-Trimethylbenzene sec-Butylbenzene p-Isopropyltoluene 1,3-Dichlorobenzene 1,4-Dichlorobenzene n-Butylbenzene 1,2-Dichlorobenzene 1,2-Dibromo-3-chloropropane 1,2,4-Trichlorobenzene Hexachlorobutadiene Naphthalene 1,2,3-Trichlorobenzene Tertiary-butyl alcohol (TBA) Surrogate: Dibromofluoromethane Surrogate: 1,2-Dichloroethane-d4 Surrogate: Toluene-d8 Surrogate: 4-Bromofluorobenzene ND ND ND ND ND 190 90 ND ND ND ND ND ND ND ND ND ND ND 130 ND ND ND ND ND ND ND ND ND 20 ND ND 20 40 10 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 400 40 40 20 40 500 20 100 20 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 1000 100 100 20 100 1000 95.5 % 95.9 % 104 % 98.5 % Notes J- Report ug/m3 0.01 EG71707 17-Jul-17 17-Jul-17 H&P 8260SV " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " 75-125 75-125 75-125 75-125 " " " " " " " " " " " " " " " " J Page 19 of 68 2470 Impala Drive Carlsbad, CA 92010 760-804-9678 Phone 760-804-9159 Fax H&P Mobile Geochemistry Inc. TRC Solutions 4393 Viewridge Ave., Suite A San Diego, CA 92123 Project: TRC071717-L6 Rev Project Number: 280845/PH01 / Otay Ranch Village 3 Project Manager: Mr. Brian Kettmann Reported: 31-Jul-17 12:20 Volatile Organic Compounds by H&P 8260SV H&P Mobile Geochemistry, Inc. Analyte Result MDL Reporting Limit Units Dilution Factor Batch Prepared Analyzed Method SGP-817-5 REP (E707054-09) Vapor Sampled: 17-Jul-17 Received: 17-Jul-17 1,1-Difluoroethane (LCC) Dichlorodifluoromethane (F12) Chloromethane Vinyl chloride Bromomethane Chloroethane Trichlorofluoromethane (F11) 1,1-Dichloroethene 1,1,2 Trichlorotrifluoroethane (F113) Carbon disulfide Methylene chloride (Dichloromethane) Methyl tertiary-butyl ether (MTBE) trans-1,2-Dichloroethene Diisopropyl ether (DIPE) 1,1-Dichloroethane Ethyl tert-butyl ether (ETBE) 2,2-Dichloropropane cis-1,2-Dichloroethene Chloroform Bromochloromethane 1,1,1-Trichloroethane 1,1-Dichloropropene Carbon tetrachloride 1,2-Dichloroethane (EDC) Tertiary-amyl methyl ether (TAME) Benzene Trichloroethene 1,2-Dichloropropane Bromodichloromethane Dibromomethane cis-1,3-Dichloropropene Toluene trans-1,3-Dichloropropene 1,1,2-Trichloroethane 1,2-Dibromoethane (EDB) 1,3-Dichloropropane ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 20 ND ND ND ND ND 100 ND ND ND ND 40 40 10 40 40 40 40 40 40 40 40 40 40 40 40 40 40 10 40 40 40 10 10 40 10 10 40 40 40 40 80 40 40 40 40 100 100 100 10 100 100 100 100 100 100 100 100 100 200 100 200 100 100 20 100 100 100 20 20 200 20 20 100 100 100 100 200 100 100 100 100 Notes J- Report ug/m3 0.01 EG71707 17-Jul-17 17-Jul-17 H&P 8260SV " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " B-03, J J Page 20 of 68 2470 Impala Drive Carlsbad, CA 92010 760-804-9678 Phone 760-804-9159 Fax H&P Mobile Geochemistry Inc. TRC Solutions 4393 Viewridge Ave., Suite A San Diego, CA 92123 Project: TRC071717-L6 Rev Project Number: 280845/PH01 / Otay Ranch Village 3 Project Manager: Mr. Brian Kettmann Reported: 31-Jul-17 12:20 Volatile Organic Compounds by H&P 8260SV H&P Mobile Geochemistry, Inc. Analyte Result MDL Reporting Limit Units Dilution Factor Batch Prepared Analyzed Method SGP-817-5 REP (E707054-09) Vapor Sampled: 17-Jul-17 Received: 17-Jul-17 Tetrachloroethene Dibromochloromethane Chlorobenzene Ethylbenzene 1,1,1,2-Tetrachloroethane m,p-Xylene o-Xylene Styrene Bromoform Isopropylbenzene (Cumene) 1,1,2,2-Tetrachloroethane 1,2,3-Trichloropropane n-Propylbenzene Bromobenzene 1,3,5-Trimethylbenzene 2-Chlorotoluene 4-Chlorotoluene tert-Butylbenzene 1,2,4-Trimethylbenzene sec-Butylbenzene p-Isopropyltoluene 1,3-Dichlorobenzene 1,4-Dichlorobenzene n-Butylbenzene 1,2-Dichlorobenzene 1,2-Dibromo-3-chloropropane 1,2,4-Trichlorobenzene Hexachlorobutadiene Naphthalene 1,2,3-Trichlorobenzene Tertiary-butyl alcohol (TBA) Surrogate: Dibromofluoromethane Surrogate: 1,2-Dichloroethane-d4 Surrogate: Toluene-d8 Surrogate: 4-Bromofluorobenzene ND ND ND 40 ND 220 90 ND ND ND ND ND ND ND ND ND ND ND 110 ND ND ND ND ND ND ND ND ND ND ND ND 20 40 10 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 400 40 40 20 40 500 20 100 20 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 1000 100 100 20 100 1000 106 % 109 % 108 % 99.2 % Notes J- Report ug/m3 0.01 EG71707 17-Jul-17 17-Jul-17 H&P 8260SV " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " 75-125 75-125 75-125 75-125 " " " " " " " " " " " " " " " " J J Page 21 of 68 2470 Impala Drive Carlsbad, CA 92010 760-804-9678 Phone 760-804-9159 Fax H&P Mobile Geochemistry Inc. TRC Solutions 4393 Viewridge Ave., Suite A San Diego, CA 92123 Project: TRC071717-L6 Rev Project Number: 280845/PH01 / Otay Ranch Village 3 Project Manager: Mr. Brian Kettmann Reported: 31-Jul-17 12:20 Volatile Organic Compounds by H&P 8260SV H&P Mobile Geochemistry, Inc. Analyte Result MDL Reporting Limit Units Dilution Factor Batch Prepared Analyzed Method SGP-825-12 (E707054-10) Vapor Sampled: 17-Jul-17 Received: 17-Jul-17 1,1-Difluoroethane (LCC) Dichlorodifluoromethane (F12) Chloromethane Vinyl chloride Bromomethane Chloroethane Trichlorofluoromethane (F11) 1,1-Dichloroethene Carbon disulfide 1,1,2 Trichlorotrifluoroethane (F113) Methylene chloride (Dichloromethane) Methyl tertiary-butyl ether (MTBE) trans-1,2-Dichloroethene Diisopropyl ether (DIPE) 1,1-Dichloroethane Ethyl tert-butyl ether (ETBE) 2,2-Dichloropropane cis-1,2-Dichloroethene Chloroform Bromochloromethane 1,1,1-Trichloroethane 1,1-Dichloropropene Carbon tetrachloride 1,2-Dichloroethane (EDC) Tertiary-amyl methyl ether (TAME) Benzene Trichloroethene 1,2-Dichloropropane Bromodichloromethane Dibromomethane cis-1,3-Dichloropropene Toluene trans-1,3-Dichloropropene 1,1,2-Trichloroethane 1,2-Dibromoethane (EDB) 1,3-Dichloropropane ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 10 ND ND ND ND ND ND 10 ND ND ND ND ND ND ND ND ND ND 40 40 10 40 40 40 40 40 40 40 40 40 40 40 40 40 40 10 40 40 40 10 10 40 10 10 40 40 40 40 80 40 40 40 40 100 100 100 10 100 100 100 100 100 100 100 100 100 200 100 200 100 100 20 100 100 100 20 20 200 20 20 100 100 100 100 200 100 100 100 100 Notes J- Report ug/m3 0.01 EG71707 17-Jul-17 17-Jul-17 H&P 8260SV " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " J B-03, J Page 22 of 68 2470 Impala Drive Carlsbad, CA 92010 760-804-9678 Phone 760-804-9159 Fax H&P Mobile Geochemistry Inc. TRC Solutions 4393 Viewridge Ave., Suite A San Diego, CA 92123 Project: TRC071717-L6 Rev Project Number: 280845/PH01 / Otay Ranch Village 3 Project Manager: Mr. Brian Kettmann Reported: 31-Jul-17 12:20 Volatile Organic Compounds by H&P 8260SV H&P Mobile Geochemistry, Inc. Analyte Result MDL Reporting Limit Units Dilution Factor Batch Prepared Analyzed Method SGP-825-12 (E707054-10) Vapor Sampled: 17-Jul-17 Received: 17-Jul-17 Tetrachloroethene Dibromochloromethane Chlorobenzene Ethylbenzene 1,1,1,2-Tetrachloroethane m,p-Xylene o-Xylene Styrene Bromoform Isopropylbenzene (Cumene) 1,1,2,2-Tetrachloroethane 1,2,3-Trichloropropane n-Propylbenzene Bromobenzene 1,3,5-Trimethylbenzene 2-Chlorotoluene 4-Chlorotoluene tert-Butylbenzene 1,2,4-Trimethylbenzene sec-Butylbenzene p-Isopropyltoluene 1,3-Dichlorobenzene 1,4-Dichlorobenzene n-Butylbenzene 1,2-Dichlorobenzene 1,2-Dibromo-3-chloropropane 1,2,4-Trichlorobenzene Hexachlorobutadiene Naphthalene 1,2,3-Trichlorobenzene Tertiary-butyl alcohol (TBA) Surrogate: Dibromofluoromethane Surrogate: 1,2-Dichloroethane-d4 Surrogate: Toluene-d8 Surrogate: 4-Bromofluorobenzene ND ND ND ND ND 80 ND ND ND ND ND ND ND ND ND ND ND ND 80 ND ND ND ND ND ND ND ND ND ND ND ND 20 40 10 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 400 40 40 20 40 500 20 100 20 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 1000 100 100 20 100 1000 98.5 % 102 % 106 % 96.8 % Notes J- Report ug/m3 0.01 EG71707 17-Jul-17 17-Jul-17 H&P 8260SV " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " 75-125 75-125 75-125 75-125 " " " " " " " " " " " " " " " " J J Page 23 of 68 2470 Impala Drive Carlsbad, CA 92010 760-804-9678 Phone 760-804-9159 Fax H&P Mobile Geochemistry Inc. TRC Solutions 4393 Viewridge Ave., Suite A San Diego, CA 92123 Project: TRC071717-L6 Rev Project Number: 280845/PH01 / Otay Ranch Village 3 Project Manager: Mr. Brian Kettmann Reported: 31-Jul-17 12:20 Volatile Organic Compounds by H&P 8260SV H&P Mobile Geochemistry, Inc. Analyte Result MDL Reporting Limit Units Dilution Factor Batch Prepared Analyzed Method SGP-825-5 (E707054-11) Vapor Sampled: 17-Jul-17 Received: 17-Jul-17 1,1-Difluoroethane (LCC) Dichlorodifluoromethane (F12) Chloromethane Vinyl chloride Bromomethane Chloroethane Trichlorofluoromethane (F11) 1,1-Dichloroethene 1,1,2 Trichlorotrifluoroethane (F113) Carbon disulfide Methylene chloride (Dichloromethane) Methyl tertiary-butyl ether (MTBE) trans-1,2-Dichloroethene Diisopropyl ether (DIPE) 1,1-Dichloroethane Ethyl tert-butyl ether (ETBE) 2,2-Dichloropropane cis-1,2-Dichloroethene Chloroform Bromochloromethane 1,1,1-Trichloroethane 1,1-Dichloropropene Carbon tetrachloride 1,2-Dichloroethane (EDC) Tertiary-amyl methyl ether (TAME) Benzene Trichloroethene 1,2-Dichloropropane Bromodichloromethane Dibromomethane cis-1,3-Dichloropropene Toluene trans-1,3-Dichloropropene 1,1,2-Trichloroethane 1,2-Dibromoethane (EDB) 1,3-Dichloropropane ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 30 ND ND ND ND ND ND 10 ND ND ND ND ND ND ND ND ND ND 40 40 10 40 40 40 40 40 40 40 40 40 40 40 40 40 40 10 40 40 40 10 10 40 10 10 40 40 40 40 80 40 40 40 40 100 100 100 10 100 100 100 100 100 100 100 100 100 200 100 200 100 100 20 100 100 100 20 20 200 20 20 100 100 100 100 200 100 100 100 100 Notes J- Report ug/m3 0.01 EG71707 17-Jul-17 17-Jul-17 H&P 8260SV " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " B-03, J Page 24 of 68 2470 Impala Drive Carlsbad, CA 92010 760-804-9678 Phone 760-804-9159 Fax H&P Mobile Geochemistry Inc. TRC Solutions 4393 Viewridge Ave., Suite A San Diego, CA 92123 Project: TRC071717-L6 Rev Project Number: 280845/PH01 / Otay Ranch Village 3 Project Manager: Mr. Brian Kettmann Reported: 31-Jul-17 12:20 Volatile Organic Compounds by H&P 8260SV H&P Mobile Geochemistry, Inc. Analyte Result MDL Reporting Limit Units Dilution Factor Batch Prepared Analyzed Method SGP-825-5 (E707054-11) Vapor Sampled: 17-Jul-17 Received: 17-Jul-17 Tetrachloroethene Dibromochloromethane Chlorobenzene Ethylbenzene 1,1,1,2-Tetrachloroethane m,p-Xylene o-Xylene Styrene Bromoform Isopropylbenzene (Cumene) 1,1,2,2-Tetrachloroethane 1,2,3-Trichloropropane n-Propylbenzene Bromobenzene 1,3,5-Trimethylbenzene 2-Chlorotoluene 4-Chlorotoluene tert-Butylbenzene 1,2,4-Trimethylbenzene sec-Butylbenzene p-Isopropyltoluene 1,3-Dichlorobenzene 1,4-Dichlorobenzene n-Butylbenzene 1,2-Dichlorobenzene 1,2-Dibromo-3-chloropropane 1,2,4-Trichlorobenzene Hexachlorobutadiene Naphthalene 1,2,3-Trichlorobenzene Tertiary-butyl alcohol (TBA) Surrogate: Dibromofluoromethane Surrogate: 1,2-Dichloroethane-d4 Surrogate: Toluene-d8 Surrogate: 4-Bromofluorobenzene ND ND ND ND ND 90 ND ND ND ND ND ND ND ND ND ND ND ND 140 ND ND ND ND ND ND ND ND ND ND ND ND 20 40 10 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 400 40 40 20 40 500 20 100 20 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 1000 100 100 20 100 1000 99.6 % 102 % 106 % 101 % Notes J- Report ug/m3 0.01 EG71707 17-Jul-17 17-Jul-17 H&P 8260SV " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " 75-125 75-125 75-125 75-125 " " " " " " " " " " " " " " " " J Page 25 of 68 2470 Impala Drive Carlsbad, CA 92010 760-804-9678 Phone 760-804-9159 Fax H&P Mobile Geochemistry Inc. TRC Solutions 4393 Viewridge Ave., Suite A San Diego, CA 92123 Project: TRC071717-L6 Rev Project Number: 280845/PH01 / Otay Ranch Village 3 Project Manager: Mr. Brian Kettmann Reported: 31-Jul-17 12:20 Volatile Organic Compounds by H&P 8260SV H&P Mobile Geochemistry, Inc. Analyte Result MDL Reporting Limit Units Dilution Factor Batch Prepared Analyzed Method SGP-A-East-20 (E707064-01) Vapor Sampled: 18-Jul-17 Received: 18-Jul-17 1,1-Difluoroethane (LCC) Dichlorodifluoromethane (F12) Chloromethane Vinyl chloride Bromomethane Chloroethane Trichlorofluoromethane (F11) 1,1-Dichloroethene Carbon disulfide 1,1,2 Trichlorotrifluoroethane (F113) Methylene chloride (Dichloromethane) Methyl tertiary-butyl ether (MTBE) trans-1,2-Dichloroethene Diisopropyl ether (DIPE) 1,1-Dichloroethane Ethyl tert-butyl ether (ETBE) 2,2-Dichloropropane cis-1,2-Dichloroethene Chloroform Bromochloromethane 1,1,1-Trichloroethane 1,1-Dichloropropene Carbon tetrachloride 1,2-Dichloroethane (EDC) Tertiary-amyl methyl ether (TAME) Benzene Trichloroethene 1,2-Dichloropropane Bromodichloromethane Dibromomethane cis-1,3-Dichloropropene Toluene trans-1,3-Dichloropropene 1,1,2-Trichloroethane 1,2-Dibromoethane (EDB) 1,3-Dichloropropane ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 30 ND ND ND ND ND 310 ND ND ND ND 40 40 10 40 40 40 40 40 40 40 40 40 40 40 40 40 40 10 40 40 40 10 10 40 10 10 40 40 40 40 80 40 40 40 40 100 100 100 10 100 100 100 100 100 100 100 100 100 200 100 200 100 100 20 100 100 100 20 20 200 20 20 100 100 100 100 200 100 100 100 100 Notes J- Report ug/m3 0.01 EG71806 18-Jul-17 18-Jul-17 H&P 8260SV " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Page 26 of 68 2470 Impala Drive Carlsbad, CA 92010 760-804-9678 Phone 760-804-9159 Fax H&P Mobile Geochemistry Inc. TRC Solutions 4393 Viewridge Ave., Suite A San Diego, CA 92123 Project: TRC071717-L6 Rev Project Number: 280845/PH01 / Otay Ranch Village 3 Project Manager: Mr. Brian Kettmann Reported: 31-Jul-17 12:20 Volatile Organic Compounds by H&P 8260SV H&P Mobile Geochemistry, Inc. Analyte Result MDL Reporting Limit Units Dilution Factor Batch Prepared Analyzed Method SGP-A-East-20 (E707064-01) Vapor Sampled: 18-Jul-17 Received: 18-Jul-17 Tetrachloroethene Dibromochloromethane Chlorobenzene Ethylbenzene 1,1,1,2-Tetrachloroethane m,p-Xylene o-Xylene Styrene Bromoform Isopropylbenzene (Cumene) 1,1,2,2-Tetrachloroethane 1,2,3-Trichloropropane n-Propylbenzene Bromobenzene 1,3,5-Trimethylbenzene 2-Chlorotoluene 4-Chlorotoluene tert-Butylbenzene 1,2,4-Trimethylbenzene sec-Butylbenzene p-Isopropyltoluene 1,3-Dichlorobenzene 1,4-Dichlorobenzene n-Butylbenzene 1,2-Dichlorobenzene 1,2-Dibromo-3-chloropropane 1,2,4-Trichlorobenzene Hexachlorobutadiene Naphthalene 1,2,3-Trichlorobenzene Tertiary-butyl alcohol (TBA) Surrogate: Dibromofluoromethane Surrogate: 1,2-Dichloroethane-d4 Surrogate: Toluene-d8 Surrogate: 4-Bromofluorobenzene ND ND ND 160 ND 660 220 ND ND ND ND ND 60 ND 100 ND ND ND 320 ND 60 ND ND ND ND ND ND ND 20 ND ND 20 40 10 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 400 40 40 20 40 500 20 100 20 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 1000 100 100 20 100 1000 99.7 % 101 % 106 % 102 % Notes J- Report ug/m3 0.01 EG71806 18-Jul-17 18-Jul-17 H&P 8260SV " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " 75-125 75-125 75-125 75-125 " " " " " " " " " " " " " " " " J J Page 27 of 68 2470 Impala Drive Carlsbad, CA 92010 760-804-9678 Phone 760-804-9159 Fax H&P Mobile Geochemistry Inc. TRC Solutions 4393 Viewridge Ave., Suite A San Diego, CA 92123 Project: TRC071717-L6 Rev Project Number: 280845/PH01 / Otay Ranch Village 3 Project Manager: Mr. Brian Kettmann Reported: 31-Jul-17 12:20 Volatile Organic Compounds by H&P 8260SV H&P Mobile Geochemistry, Inc. Analyte Result MDL Reporting Limit Units Dilution Factor Batch Prepared Analyzed Method SGP-A-East-5 (E707064-02) Vapor Sampled: 18-Jul-17 Received: 18-Jul-17 1,1-Difluoroethane (LCC) Dichlorodifluoromethane (F12) Chloromethane Vinyl chloride Bromomethane Chloroethane Trichlorofluoromethane (F11) 1,1-Dichloroethene 1,1,2 Trichlorotrifluoroethane (F113) Carbon disulfide Methylene chloride (Dichloromethane) Methyl tertiary-butyl ether (MTBE) trans-1,2-Dichloroethene Diisopropyl ether (DIPE) 1,1-Dichloroethane Ethyl tert-butyl ether (ETBE) 2,2-Dichloropropane cis-1,2-Dichloroethene Chloroform Bromochloromethane 1,1,1-Trichloroethane 1,1-Dichloropropene Carbon tetrachloride 1,2-Dichloroethane (EDC) Tertiary-amyl methyl ether (TAME) Benzene Trichloroethene 1,2-Dichloropropane Bromodichloromethane Dibromomethane cis-1,3-Dichloropropene Toluene trans-1,3-Dichloropropene 1,1,2-Trichloroethane 1,2-Dibromoethane (EDB) 1,3-Dichloropropane ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 100 ND ND ND ND ND ND 10 ND ND ND ND ND ND ND ND ND ND 40 40 10 40 40 40 40 40 40 40 40 40 40 40 40 40 40 10 40 40 40 10 10 40 10 10 40 40 40 40 80 40 40 40 40 100 100 100 10 100 100 100 100 100 100 100 100 100 200 100 200 100 100 20 100 100 100 20 20 200 20 20 100 100 100 100 200 100 100 100 100 Notes J- Report ug/m3 0.01 EG71806 18-Jul-17 18-Jul-17 H&P 8260SV " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " J Page 28 of 68 2470 Impala Drive Carlsbad, CA 92010 760-804-9678 Phone 760-804-9159 Fax H&P Mobile Geochemistry Inc. TRC Solutions 4393 Viewridge Ave., Suite A San Diego, CA 92123 Project: TRC071717-L6 Rev Project Number: 280845/PH01 / Otay Ranch Village 3 Project Manager: Mr. Brian Kettmann Reported: 31-Jul-17 12:20 Volatile Organic Compounds by H&P 8260SV H&P Mobile Geochemistry, Inc. Analyte Result MDL Reporting Limit Units Dilution Factor Batch Prepared Analyzed Method SGP-A-East-5 (E707064-02) Vapor Sampled: 18-Jul-17 Received: 18-Jul-17 Tetrachloroethene Dibromochloromethane Chlorobenzene Ethylbenzene 1,1,1,2-Tetrachloroethane m,p-Xylene o-Xylene Styrene Bromoform Isopropylbenzene (Cumene) 1,1,2,2-Tetrachloroethane 1,2,3-Trichloropropane n-Propylbenzene Bromobenzene 1,3,5-Trimethylbenzene 2-Chlorotoluene 4-Chlorotoluene tert-Butylbenzene 1,2,4-Trimethylbenzene sec-Butylbenzene p-Isopropyltoluene 1,3-Dichlorobenzene 1,4-Dichlorobenzene n-Butylbenzene 1,2-Dichlorobenzene 1,2-Dibromo-3-chloropropane 1,2,4-Trichlorobenzene Hexachlorobutadiene Naphthalene 1,2,3-Trichlorobenzene Tertiary-butyl alcohol (TBA) Surrogate: Dibromofluoromethane Surrogate: 1,2-Dichloroethane-d4 Surrogate: Toluene-d8 Surrogate: 4-Bromofluorobenzene ND ND ND ND ND 50 ND ND ND ND ND ND ND ND ND ND ND ND 50 ND ND ND ND ND ND ND ND ND ND ND ND 20 40 10 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 400 40 40 20 40 500 20 100 20 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 1000 100 100 20 100 1000 99.6 % 102 % 107 % 96.7 % Notes J- Report ug/m3 0.01 EG71806 18-Jul-17 18-Jul-17 H&P 8260SV " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " 75-125 75-125 75-125 75-125 " " " " " " " " " " " " " " " " J J Page 29 of 68 2470 Impala Drive Carlsbad, CA 92010 760-804-9678 Phone 760-804-9159 Fax H&P Mobile Geochemistry Inc. TRC Solutions 4393 Viewridge Ave., Suite A San Diego, CA 92123 Project: TRC071717-L6 Rev Project Number: 280845/PH01 / Otay Ranch Village 3 Project Manager: Mr. Brian Kettmann Reported: 31-Jul-17 12:20 Volatile Organic Compounds by H&P 8260SV H&P Mobile Geochemistry, Inc. Analyte Result MDL Reporting Limit Units Dilution Factor Batch Prepared Analyzed Method SGP-A-East-5 REP (E707064-03) Vapor Sampled: 18-Jul-17 Received: 18-Jul-17 1,1-Difluoroethane (LCC) Dichlorodifluoromethane (F12) Chloromethane Vinyl chloride Bromomethane Chloroethane Trichlorofluoromethane (F11) 1,1-Dichloroethene Carbon disulfide 1,1,2 Trichlorotrifluoroethane (F113) Methylene chloride (Dichloromethane) Methyl tertiary-butyl ether (MTBE) trans-1,2-Dichloroethene Diisopropyl ether (DIPE) 1,1-Dichloroethane Ethyl tert-butyl ether (ETBE) 2,2-Dichloropropane cis-1,2-Dichloroethene Chloroform Bromochloromethane 1,1,1-Trichloroethane 1,1-Dichloropropene Carbon tetrachloride 1,2-Dichloroethane (EDC) Tertiary-amyl methyl ether (TAME) Benzene Trichloroethene 1,2-Dichloropropane Bromodichloromethane Dibromomethane cis-1,3-Dichloropropene Toluene trans-1,3-Dichloropropene 1,1,2-Trichloroethane 1,2-Dibromoethane (EDB) 1,3-Dichloropropane ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 70 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 40 40 10 40 40 40 40 40 40 40 40 40 40 40 40 40 40 10 40 40 40 10 10 40 10 10 40 40 40 40 80 40 40 40 40 100 100 100 10 100 100 100 100 100 100 100 100 100 200 100 200 100 100 20 100 100 100 20 20 200 20 20 100 100 100 100 200 100 100 100 100 Notes J- Report ug/m3 0.01 EG71806 18-Jul-17 18-Jul-17 H&P 8260SV " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Page 30 of 68 2470 Impala Drive Carlsbad, CA 92010 760-804-9678 Phone 760-804-9159 Fax H&P Mobile Geochemistry Inc. TRC Solutions 4393 Viewridge Ave., Suite A San Diego, CA 92123 Project: TRC071717-L6 Rev Project Number: 280845/PH01 / Otay Ranch Village 3 Project Manager: Mr. Brian Kettmann Reported: 31-Jul-17 12:20 Volatile Organic Compounds by H&P 8260SV H&P Mobile Geochemistry, Inc. Analyte Result MDL Reporting Limit Units Dilution Factor Batch Prepared Analyzed Method SGP-A-East-5 REP (E707064-03) Vapor Sampled: 18-Jul-17 Received: 18-Jul-17 Tetrachloroethene Dibromochloromethane Chlorobenzene Ethylbenzene 1,1,1,2-Tetrachloroethane m,p-Xylene o-Xylene Styrene Bromoform Isopropylbenzene (Cumene) 1,1,2,2-Tetrachloroethane 1,2,3-Trichloropropane n-Propylbenzene Bromobenzene 1,3,5-Trimethylbenzene 2-Chlorotoluene 4-Chlorotoluene tert-Butylbenzene 1,2,4-Trimethylbenzene sec-Butylbenzene p-Isopropyltoluene 1,3-Dichlorobenzene 1,4-Dichlorobenzene n-Butylbenzene 1,2-Dichlorobenzene 1,2-Dibromo-3-chloropropane 1,2,4-Trichlorobenzene Hexachlorobutadiene Naphthalene 1,2,3-Trichlorobenzene Tertiary-butyl alcohol (TBA) Surrogate: Dibromofluoromethane Surrogate: 1,2-Dichloroethane-d4 Surrogate: Toluene-d8 Surrogate: 4-Bromofluorobenzene ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 20 40 10 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 400 40 40 20 40 500 20 100 20 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 1000 100 100 20 100 1000 103 % 97.8 % 106 % 103 % Notes J- Report ug/m3 0.01 EG71806 18-Jul-17 18-Jul-17 H&P 8260SV " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " 75-125 75-125 75-125 75-125 " " " " " " " " " " " " " " " " Page 31 of 68 2470 Impala Drive Carlsbad, CA 92010 760-804-9678 Phone 760-804-9159 Fax H&P Mobile Geochemistry Inc. TRC Solutions 4393 Viewridge Ave., Suite A San Diego, CA 92123 Project: TRC071717-L6 Rev Project Number: 280845/PH01 / Otay Ranch Village 3 Project Manager: Mr. Brian Kettmann Reported: 31-Jul-17 12:20 Volatile Organic Compounds by H&P 8260SV H&P Mobile Geochemistry, Inc. Analyte Result MDL Reporting Limit Units Dilution Factor Batch Prepared Analyzed Method SGP-A-West-9 (E707064-04) Vapor Sampled: 18-Jul-17 Received: 18-Jul-17 1,1-Difluoroethane (LCC) Dichlorodifluoromethane (F12) Chloromethane Vinyl chloride Bromomethane Chloroethane Trichlorofluoromethane (F11) 1,1-Dichloroethene Carbon disulfide 1,1,2 Trichlorotrifluoroethane (F113) Methylene chloride (Dichloromethane) Methyl tertiary-butyl ether (MTBE) trans-1,2-Dichloroethene Diisopropyl ether (DIPE) 1,1-Dichloroethane Ethyl tert-butyl ether (ETBE) 2,2-Dichloropropane cis-1,2-Dichloroethene Chloroform Bromochloromethane 1,1,1-Trichloroethane 1,1-Dichloropropene Carbon tetrachloride 1,2-Dichloroethane (EDC) Tertiary-amyl methyl ether (TAME) Benzene Trichloroethene 1,2-Dichloropropane Bromodichloromethane Dibromomethane cis-1,3-Dichloropropene Toluene trans-1,3-Dichloropropene 1,1,2-Trichloroethane 1,2-Dibromoethane (EDB) 1,3-Dichloropropane ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 10 ND ND ND ND ND ND ND ND ND ND 40 40 10 40 40 40 40 40 40 40 40 40 40 40 40 40 40 10 40 40 40 10 10 40 10 10 40 40 40 40 80 40 40 40 40 100 100 100 10 100 100 100 100 100 100 100 100 100 200 100 200 100 100 20 100 100 100 20 20 200 20 20 100 100 100 100 200 100 100 100 100 Notes J- Report ug/m3 0.01 EG71806 18-Jul-17 18-Jul-17 H&P 8260SV " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " J Page 32 of 68 2470 Impala Drive Carlsbad, CA 92010 760-804-9678 Phone 760-804-9159 Fax H&P Mobile Geochemistry Inc. TRC Solutions 4393 Viewridge Ave., Suite A San Diego, CA 92123 Project: TRC071717-L6 Rev Project Number: 280845/PH01 / Otay Ranch Village 3 Project Manager: Mr. Brian Kettmann Reported: 31-Jul-17 12:20 Volatile Organic Compounds by H&P 8260SV H&P Mobile Geochemistry, Inc. Analyte Result MDL Reporting Limit Units Dilution Factor Batch Prepared Analyzed Method SGP-A-West-9 (E707064-04) Vapor Sampled: 18-Jul-17 Received: 18-Jul-17 Tetrachloroethene Dibromochloromethane Chlorobenzene Ethylbenzene 1,1,1,2-Tetrachloroethane m,p-Xylene o-Xylene Styrene Bromoform Isopropylbenzene (Cumene) 1,1,2,2-Tetrachloroethane 1,2,3-Trichloropropane n-Propylbenzene Bromobenzene 1,3,5-Trimethylbenzene 2-Chlorotoluene 4-Chlorotoluene tert-Butylbenzene 1,2,4-Trimethylbenzene sec-Butylbenzene p-Isopropyltoluene 1,3-Dichlorobenzene 1,4-Dichlorobenzene n-Butylbenzene 1,2-Dichlorobenzene 1,2-Dibromo-3-chloropropane 1,2,4-Trichlorobenzene Hexachlorobutadiene Naphthalene 1,2,3-Trichlorobenzene Tertiary-butyl alcohol (TBA) Surrogate: Dibromofluoromethane Surrogate: 1,2-Dichloroethane-d4 Surrogate: Toluene-d8 Surrogate: 4-Bromofluorobenzene ND ND ND ND ND 80 ND ND ND ND ND ND ND ND ND ND ND ND 60 ND ND ND ND ND ND ND ND ND ND ND ND 20 40 10 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 400 40 40 20 40 500 20 100 20 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 1000 100 100 20 100 1000 99.3 % 97.5 % 106 % 100 % Notes J- Report ug/m3 0.01 EG71806 18-Jul-17 18-Jul-17 H&P 8260SV " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " 75-125 75-125 75-125 75-125 " " " " " " " " " " " " " " " " J J Page 33 of 68 2470 Impala Drive Carlsbad, CA 92010 760-804-9678 Phone 760-804-9159 Fax H&P Mobile Geochemistry Inc. TRC Solutions 4393 Viewridge Ave., Suite A San Diego, CA 92123 Project: TRC071717-L6 Rev Project Number: 280845/PH01 / Otay Ranch Village 3 Project Manager: Mr. Brian Kettmann Reported: 31-Jul-17 12:20 Volatile Organic Compounds by H&P 8260SV H&P Mobile Geochemistry, Inc. Analyte Result MDL Reporting Limit Units Dilution Factor Batch Prepared Analyzed Method SGP-A-West-5 (E707064-05) Vapor Sampled: 18-Jul-17 Received: 18-Jul-17 1,1-Difluoroethane (LCC) Dichlorodifluoromethane (F12) Chloromethane Vinyl chloride Bromomethane Chloroethane Trichlorofluoromethane (F11) 1,1-Dichloroethene 1,1,2 Trichlorotrifluoroethane (F113) Carbon disulfide Methylene chloride (Dichloromethane) Methyl tertiary-butyl ether (MTBE) trans-1,2-Dichloroethene Diisopropyl ether (DIPE) 1,1-Dichloroethane Ethyl tert-butyl ether (ETBE) 2,2-Dichloropropane cis-1,2-Dichloroethene Chloroform Bromochloromethane 1,1,1-Trichloroethane 1,1-Dichloropropene Carbon tetrachloride 1,2-Dichloroethane (EDC) Tertiary-amyl methyl ether (TAME) Benzene Trichloroethene 1,2-Dichloropropane Bromodichloromethane Dibromomethane cis-1,3-Dichloropropene Toluene trans-1,3-Dichloropropene 1,1,2-Trichloroethane 1,2-Dibromoethane (EDB) 1,3-Dichloropropane ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 40 40 10 40 40 40 40 40 40 40 40 40 40 40 40 40 40 10 40 40 40 10 10 40 10 10 40 40 40 40 80 40 40 40 40 100 100 100 10 100 100 100 100 100 100 100 100 100 200 100 200 100 100 20 100 100 100 20 20 200 20 20 100 100 100 100 200 100 100 100 100 Notes J- Report ug/m3 0.01 EG71806 18-Jul-17 18-Jul-17 H&P 8260SV " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Page 34 of 68 2470 Impala Drive Carlsbad, CA 92010 760-804-9678 Phone 760-804-9159 Fax H&P Mobile Geochemistry Inc. TRC Solutions 4393 Viewridge Ave., Suite A San Diego, CA 92123 Project: TRC071717-L6 Rev Project Number: 280845/PH01 / Otay Ranch Village 3 Project Manager: Mr. Brian Kettmann Reported: 31-Jul-17 12:20 Volatile Organic Compounds by H&P 8260SV H&P Mobile Geochemistry, Inc. Analyte Result MDL Reporting Limit Units Dilution Factor Batch Prepared Analyzed Method SGP-A-West-5 (E707064-05) Vapor Sampled: 18-Jul-17 Received: 18-Jul-17 Tetrachloroethene Dibromochloromethane Chlorobenzene Ethylbenzene 1,1,1,2-Tetrachloroethane m,p-Xylene o-Xylene Styrene Bromoform Isopropylbenzene (Cumene) 1,1,2,2-Tetrachloroethane 1,2,3-Trichloropropane n-Propylbenzene Bromobenzene 1,3,5-Trimethylbenzene 2-Chlorotoluene 4-Chlorotoluene tert-Butylbenzene 1,2,4-Trimethylbenzene sec-Butylbenzene p-Isopropyltoluene 1,3-Dichlorobenzene 1,4-Dichlorobenzene n-Butylbenzene 1,2-Dichlorobenzene 1,2-Dibromo-3-chloropropane 1,2,4-Trichlorobenzene Hexachlorobutadiene Naphthalene 1,2,3-Trichlorobenzene Tertiary-butyl alcohol (TBA) Surrogate: Dibromofluoromethane Surrogate: 1,2-Dichloroethane-d4 Surrogate: Toluene-d8 Surrogate: 4-Bromofluorobenzene ND ND ND ND ND 60 ND ND ND ND ND ND ND ND ND ND ND ND 60 ND ND ND ND ND ND ND ND ND ND ND ND 20 40 10 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 400 40 40 20 40 500 20 100 20 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 1000 100 100 20 100 1000 96.6 % 98.5 % 108 % 93.4 % Notes J- Report ug/m3 0.01 EG71806 18-Jul-17 18-Jul-17 H&P 8260SV " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " 75-125 75-125 75-125 75-125 " " " " " " " " " " " " " " " " J J Page 35 of 68 2470 Impala Drive Carlsbad, CA 92010 760-804-9678 Phone 760-804-9159 Fax H&P Mobile Geochemistry Inc. TRC Solutions 4393 Viewridge Ave., Suite A San Diego, CA 92123 Project: TRC071717-L6 Rev Project Number: 280845/PH01 / Otay Ranch Village 3 Project Manager: Mr. Brian Kettmann Reported: 31-Jul-17 12:20 Volatile Organic Compounds by H&P 8260SV H&P Mobile Geochemistry, Inc. Analyte Result MDL Reporting Limit Units Dilution Factor Batch Prepared Analyzed Method SGP-223-25 (E707064-06) Vapor Sampled: 18-Jul-17 Received: 18-Jul-17 1,1-Difluoroethane (LCC) Dichlorodifluoromethane (F12) Chloromethane Vinyl chloride Bromomethane Chloroethane Trichlorofluoromethane (F11) 1,1-Dichloroethene Carbon disulfide 1,1,2 Trichlorotrifluoroethane (F113) Methylene chloride (Dichloromethane) Methyl tertiary-butyl ether (MTBE) trans-1,2-Dichloroethene Diisopropyl ether (DIPE) 1,1-Dichloroethane Ethyl tert-butyl ether (ETBE) 2,2-Dichloropropane cis-1,2-Dichloroethene Chloroform Bromochloromethane 1,1,1-Trichloroethane 1,1-Dichloropropene Carbon tetrachloride 1,2-Dichloroethane (EDC) Tertiary-amyl methyl ether (TAME) Benzene Trichloroethene 1,2-Dichloropropane Bromodichloromethane Dibromomethane cis-1,3-Dichloropropene Toluene trans-1,3-Dichloropropene 1,1,2-Trichloroethane 1,2-Dibromoethane (EDB) 1,3-Dichloropropane ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 30 ND ND ND ND ND ND 20 ND ND ND ND ND ND ND ND ND ND 40 40 10 40 40 40 40 40 40 40 40 40 40 40 40 40 40 10 40 40 40 10 10 40 10 10 40 40 40 40 80 40 40 40 40 100 100 100 10 100 100 100 100 100 100 100 100 100 200 100 200 100 100 20 100 100 100 20 20 200 20 20 100 100 100 100 200 100 100 100 100 Notes J- Report ug/m3 0.01 EG71806 18-Jul-17 18-Jul-17 H&P 8260SV " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " J Page 36 of 68 2470 Impala Drive Carlsbad, CA 92010 760-804-9678 Phone 760-804-9159 Fax H&P Mobile Geochemistry Inc. TRC Solutions 4393 Viewridge Ave., Suite A San Diego, CA 92123 Project: TRC071717-L6 Rev Project Number: 280845/PH01 / Otay Ranch Village 3 Project Manager: Mr. Brian Kettmann Reported: 31-Jul-17 12:20 Volatile Organic Compounds by H&P 8260SV H&P Mobile Geochemistry, Inc. Analyte Result MDL Reporting Limit Units Dilution Factor Batch Prepared Analyzed Method SGP-223-25 (E707064-06) Vapor Sampled: 18-Jul-17 Received: 18-Jul-17 Tetrachloroethene Dibromochloromethane Chlorobenzene Ethylbenzene 1,1,1,2-Tetrachloroethane m,p-Xylene o-Xylene Styrene Bromoform Isopropylbenzene (Cumene) 1,1,2,2-Tetrachloroethane 1,2,3-Trichloropropane n-Propylbenzene Bromobenzene 1,3,5-Trimethylbenzene 2-Chlorotoluene 4-Chlorotoluene tert-Butylbenzene 1,2,4-Trimethylbenzene sec-Butylbenzene p-Isopropyltoluene 1,3-Dichlorobenzene 1,4-Dichlorobenzene n-Butylbenzene 1,2-Dichlorobenzene 1,2-Dibromo-3-chloropropane 1,2,4-Trichlorobenzene Hexachlorobutadiene Naphthalene 1,2,3-Trichlorobenzene Tertiary-butyl alcohol (TBA) Surrogate: Dibromofluoromethane Surrogate: 1,2-Dichloroethane-d4 Surrogate: Toluene-d8 Surrogate: 4-Bromofluorobenzene ND ND ND ND ND 80 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 20 40 10 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 400 40 40 20 40 500 20 100 20 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 1000 100 100 20 100 1000 93.9 % 96.6 % 107 % 95.8 % Notes J- Report ug/m3 0.01 EG71806 18-Jul-17 18-Jul-17 H&P 8260SV " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " 75-125 75-125 75-125 75-125 " " " " " " " " " " " " " " " " J Page 37 of 68 2470 Impala Drive Carlsbad, CA 92010 760-804-9678 Phone 760-804-9159 Fax H&P Mobile Geochemistry Inc. TRC Solutions 4393 Viewridge Ave., Suite A San Diego, CA 92123 Project: TRC071717-L6 Rev Project Number: 280845/PH01 / Otay Ranch Village 3 Project Manager: Mr. Brian Kettmann Reported: 31-Jul-17 12:20 Volatile Organic Compounds by H&P 8260SV H&P Mobile Geochemistry, Inc. Analyte Result MDL Reporting Limit Units Dilution Factor Batch Prepared Analyzed Method SGP-223-5 (E707064-07) Vapor Sampled: 18-Jul-17 Received: 18-Jul-17 1,1-Difluoroethane (LCC) Dichlorodifluoromethane (F12) Chloromethane Vinyl chloride Bromomethane Chloroethane Trichlorofluoromethane (F11) 1,1-Dichloroethene 1,1,2 Trichlorotrifluoroethane (F113) Carbon disulfide Methylene chloride (Dichloromethane) Methyl tertiary-butyl ether (MTBE) trans-1,2-Dichloroethene Diisopropyl ether (DIPE) 1,1-Dichloroethane Ethyl tert-butyl ether (ETBE) 2,2-Dichloropropane cis-1,2-Dichloroethene Chloroform Bromochloromethane 1,1,1-Trichloroethane 1,1-Dichloropropene Carbon tetrachloride 1,2-Dichloroethane (EDC) Tertiary-amyl methyl ether (TAME) Benzene Trichloroethene 1,2-Dichloropropane Bromodichloromethane Dibromomethane cis-1,3-Dichloropropene Toluene trans-1,3-Dichloropropene 1,1,2-Trichloroethane 1,2-Dibromoethane (EDB) 1,3-Dichloropropane ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 60 ND ND ND ND ND ND 10 ND ND ND ND ND ND ND ND ND ND 40 40 10 40 40 40 40 40 40 40 40 40 40 40 40 40 40 10 40 40 40 10 10 40 10 10 40 40 40 40 80 40 40 40 40 100 100 100 10 100 100 100 100 100 100 100 100 100 200 100 200 100 100 20 100 100 100 20 20 200 20 20 100 100 100 100 200 100 100 100 100 Notes J- Report ug/m3 0.01 EG71806 18-Jul-17 18-Jul-17 H&P 8260SV " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " J Page 38 of 68 2470 Impala Drive Carlsbad, CA 92010 760-804-9678 Phone 760-804-9159 Fax H&P Mobile Geochemistry Inc. TRC Solutions 4393 Viewridge Ave., Suite A San Diego, CA 92123 Project: TRC071717-L6 Rev Project Number: 280845/PH01 / Otay Ranch Village 3 Project Manager: Mr. Brian Kettmann Reported: 31-Jul-17 12:20 Volatile Organic Compounds by H&P 8260SV H&P Mobile Geochemistry, Inc. Analyte Result MDL Reporting Limit Units Dilution Factor Batch Prepared Analyzed Method SGP-223-5 (E707064-07) Vapor Sampled: 18-Jul-17 Received: 18-Jul-17 Tetrachloroethene Dibromochloromethane Chlorobenzene Ethylbenzene 1,1,1,2-Tetrachloroethane m,p-Xylene o-Xylene Styrene Bromoform Isopropylbenzene (Cumene) 1,1,2,2-Tetrachloroethane 1,2,3-Trichloropropane n-Propylbenzene Bromobenzene 1,3,5-Trimethylbenzene 2-Chlorotoluene 4-Chlorotoluene tert-Butylbenzene 1,2,4-Trimethylbenzene sec-Butylbenzene p-Isopropyltoluene 1,3-Dichlorobenzene 1,4-Dichlorobenzene n-Butylbenzene 1,2-Dichlorobenzene 1,2-Dibromo-3-chloropropane 1,2,4-Trichlorobenzene Hexachlorobutadiene Naphthalene 1,2,3-Trichlorobenzene Tertiary-butyl alcohol (TBA) Surrogate: Dibromofluoromethane Surrogate: 1,2-Dichloroethane-d4 Surrogate: Toluene-d8 Surrogate: 4-Bromofluorobenzene ND ND ND 50 ND 340 160 ND ND ND ND ND 40 ND 100 ND ND ND 280 ND 70 ND ND ND ND ND ND ND ND ND ND 20 40 10 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 400 40 40 20 40 500 20 100 20 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 1000 100 100 20 100 1000 96.2 % 95.6 % 107 % 99.7 % Notes J- Report ug/m3 0.01 EG71806 18-Jul-17 18-Jul-17 H&P 8260SV " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " 75-125 75-125 75-125 75-125 " " " " " " " " " " " " " " " " J J J J Page 39 of 68 2470 Impala Drive Carlsbad, CA 92010 760-804-9678 Phone 760-804-9159 Fax H&P Mobile Geochemistry Inc. TRC Solutions 4393 Viewridge Ave., Suite A San Diego, CA 92123 Project: TRC071717-L6 Rev Project Number: 280845/PH01 / Otay Ranch Village 3 Project Manager: Mr. Brian Kettmann Reported: 31-Jul-17 12:20 Volatile Organic Compounds by H&P 8260SV H&P Mobile Geochemistry, Inc. Analyte Result MDL Reporting Limit Units Dilution Factor Batch Prepared Analyzed Method SGP-324-25 (E707064-08) Vapor Sampled: 18-Jul-17 Received: 18-Jul-17 1,1-Difluoroethane (LCC) Dichlorodifluoromethane (F12) Chloromethane Vinyl chloride Bromomethane Chloroethane Trichlorofluoromethane (F11) 1,1-Dichloroethene 1,1,2 Trichlorotrifluoroethane (F113) Carbon disulfide Methylene chloride (Dichloromethane) Methyl tertiary-butyl ether (MTBE) trans-1,2-Dichloroethene Diisopropyl ether (DIPE) 1,1-Dichloroethane Ethyl tert-butyl ether (ETBE) 2,2-Dichloropropane cis-1,2-Dichloroethene Chloroform Bromochloromethane 1,1,1-Trichloroethane 1,1-Dichloropropene Carbon tetrachloride 1,2-Dichloroethane (EDC) Tertiary-amyl methyl ether (TAME) Benzene Trichloroethene 1,2-Dichloropropane Bromodichloromethane Dibromomethane cis-1,3-Dichloropropene Toluene trans-1,3-Dichloropropene 1,1,2-Trichloroethane 1,2-Dibromoethane (EDB) 1,3-Dichloropropane ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 230 ND ND ND ND ND ND 10 ND ND 110 ND ND ND ND ND ND ND 40 40 10 40 40 40 40 40 40 40 40 40 40 40 40 40 40 10 40 40 40 10 10 40 10 10 40 40 40 40 80 40 40 40 40 100 100 100 10 100 100 100 100 100 100 100 100 100 200 100 200 100 100 20 100 100 100 20 20 200 20 20 100 100 100 100 200 100 100 100 100 Notes J- Report ug/m3 0.01 EG71806 18-Jul-17 18-Jul-17 H&P 8260SV " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " J Page 40 of 68 2470 Impala Drive Carlsbad, CA 92010 760-804-9678 Phone 760-804-9159 Fax H&P Mobile Geochemistry Inc. TRC Solutions 4393 Viewridge Ave., Suite A San Diego, CA 92123 Project: TRC071717-L6 Rev Project Number: 280845/PH01 / Otay Ranch Village 3 Project Manager: Mr. Brian Kettmann Reported: 31-Jul-17 12:20 Volatile Organic Compounds by H&P 8260SV H&P Mobile Geochemistry, Inc. Analyte Result MDL Reporting Limit Units Dilution Factor Batch Prepared Analyzed Method SGP-324-25 (E707064-08) Vapor Sampled: 18-Jul-17 Received: 18-Jul-17 Tetrachloroethene Dibromochloromethane Chlorobenzene Ethylbenzene 1,1,1,2-Tetrachloroethane m,p-Xylene o-Xylene Styrene Bromoform Isopropylbenzene (Cumene) 1,1,2,2-Tetrachloroethane 1,2,3-Trichloropropane n-Propylbenzene Bromobenzene 1,3,5-Trimethylbenzene 2-Chlorotoluene 4-Chlorotoluene tert-Butylbenzene 1,2,4-Trimethylbenzene sec-Butylbenzene p-Isopropyltoluene 1,3-Dichlorobenzene 1,4-Dichlorobenzene n-Butylbenzene 1,2-Dichlorobenzene 1,2-Dibromo-3-chloropropane 1,2,4-Trichlorobenzene Hexachlorobutadiene Naphthalene 1,2,3-Trichlorobenzene Tertiary-butyl alcohol (TBA) Surrogate: Dibromofluoromethane Surrogate: 1,2-Dichloroethane-d4 Surrogate: Toluene-d8 Surrogate: 4-Bromofluorobenzene ND 70 ND ND ND 70 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 20 40 10 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 400 40 40 20 40 500 20 100 20 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 1000 100 100 20 100 1000 97.6 % 98.2 % 106 % 98.4 % Notes J- Report ug/m3 0.01 EG71806 18-Jul-17 18-Jul-17 H&P 8260SV " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " 75-125 75-125 75-125 75-125 " " " " " " " " " " " " " " " " J J Page 41 of 68 2470 Impala Drive Carlsbad, CA 92010 760-804-9678 Phone 760-804-9159 Fax H&P Mobile Geochemistry Inc. TRC Solutions 4393 Viewridge Ave., Suite A San Diego, CA 92123 Project: TRC071717-L6 Rev Project Number: 280845/PH01 / Otay Ranch Village 3 Project Manager: Mr. Brian Kettmann Reported: 31-Jul-17 12:20 Volatile Organic Compounds by H&P 8260SV H&P Mobile Geochemistry, Inc. Analyte Result MDL Reporting Limit Units Dilution Factor Batch Prepared Analyzed Method SGP-324-5 (E707064-09) Vapor Sampled: 18-Jul-17 Received: 18-Jul-17 1,1-Difluoroethane (LCC) Dichlorodifluoromethane (F12) Chloromethane Vinyl chloride Bromomethane Chloroethane Trichlorofluoromethane (F11) 1,1-Dichloroethene Carbon disulfide 1,1,2 Trichlorotrifluoroethane (F113) Methylene chloride (Dichloromethane) Methyl tertiary-butyl ether (MTBE) trans-1,2-Dichloroethene Diisopropyl ether (DIPE) 1,1-Dichloroethane Ethyl tert-butyl ether (ETBE) 2,2-Dichloropropane cis-1,2-Dichloroethene Chloroform Bromochloromethane 1,1,1-Trichloroethane 1,1-Dichloropropene Carbon tetrachloride 1,2-Dichloroethane (EDC) Tertiary-amyl methyl ether (TAME) Benzene Trichloroethene 1,2-Dichloropropane Bromodichloromethane Dibromomethane cis-1,3-Dichloropropene Toluene trans-1,3-Dichloropropene 1,1,2-Trichloroethane 1,2-Dibromoethane (EDB) 1,3-Dichloropropane ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 430 ND ND ND ND ND ND 30 ND ND 290 ND ND 280 ND ND ND ND 40 40 10 40 40 40 40 40 40 40 40 40 40 40 40 40 40 10 40 40 40 10 10 40 10 10 40 40 40 40 80 40 40 40 40 100 100 100 10 100 100 100 100 100 100 100 100 100 200 100 200 100 100 20 100 100 100 20 20 200 20 20 100 100 100 100 200 100 100 100 100 Notes J- Report ug/m3 0.01 EG71806 18-Jul-17 18-Jul-17 H&P 8260SV " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Page 42 of 68 2470 Impala Drive Carlsbad, CA 92010 760-804-9678 Phone 760-804-9159 Fax H&P Mobile Geochemistry Inc. TRC Solutions 4393 Viewridge Ave., Suite A San Diego, CA 92123 Project: TRC071717-L6 Rev Project Number: 280845/PH01 / Otay Ranch Village 3 Project Manager: Mr. Brian Kettmann Reported: 31-Jul-17 12:20 Volatile Organic Compounds by H&P 8260SV H&P Mobile Geochemistry, Inc. Analyte Result MDL Reporting Limit Units Dilution Factor Batch Prepared Analyzed Method SGP-324-5 (E707064-09) Vapor Sampled: 18-Jul-17 Received: 18-Jul-17 Tetrachloroethene Dibromochloromethane Chlorobenzene Ethylbenzene 1,1,1,2-Tetrachloroethane m,p-Xylene o-Xylene Styrene Bromoform Isopropylbenzene (Cumene) 1,1,2,2-Tetrachloroethane 1,2,3-Trichloropropane n-Propylbenzene Bromobenzene 1,3,5-Trimethylbenzene 2-Chlorotoluene 4-Chlorotoluene tert-Butylbenzene 1,2,4-Trimethylbenzene sec-Butylbenzene p-Isopropyltoluene 1,3-Dichlorobenzene 1,4-Dichlorobenzene n-Butylbenzene 1,2-Dichlorobenzene 1,2-Dibromo-3-chloropropane 1,2,4-Trichlorobenzene Hexachlorobutadiene Naphthalene 1,2,3-Trichlorobenzene Tertiary-butyl alcohol (TBA) Surrogate: Dibromofluoromethane Surrogate: 1,2-Dichloroethane-d4 Surrogate: Toluene-d8 Surrogate: 4-Bromofluorobenzene ND 190 ND 160 ND 500 120 ND ND ND ND ND ND ND 60 ND ND ND 110 ND ND ND ND ND ND ND ND ND ND ND ND 20 40 10 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 400 40 40 20 40 500 20 100 20 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 1000 100 100 20 100 1000 95.3 % 96.3 % 106 % 94.4 % Notes J- Report ug/m3 0.01 EG71806 18-Jul-17 18-Jul-17 H&P 8260SV " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " 75-125 75-125 75-125 75-125 " " " " " " " " " " " " " " " " J Page 43 of 68 2470 Impala Drive Carlsbad, CA 92010 760-804-9678 Phone 760-804-9159 Fax H&P Mobile Geochemistry Inc. TRC Solutions 4393 Viewridge Ave., Suite A San Diego, CA 92123 Project: TRC071717-L6 Rev Project Number: 280845/PH01 / Otay Ranch Village 3 Project Manager: Mr. Brian Kettmann Reported: 31-Jul-17 12:20 Volatile Organic Compounds by H&P 8260SV H&P Mobile Geochemistry, Inc. Analyte Result MDL Reporting Limit Units Dilution Factor Batch Prepared Analyzed Method SGP-335-30 (E707064-10) Vapor Sampled: 18-Jul-17 Received: 18-Jul-17 1,1-Difluoroethane (LCC) Dichlorodifluoromethane (F12) Chloromethane Vinyl chloride Bromomethane Chloroethane Trichlorofluoromethane (F11) 1,1-Dichloroethene Carbon disulfide 1,1,2 Trichlorotrifluoroethane (F113) Methylene chloride (Dichloromethane) Methyl tertiary-butyl ether (MTBE) trans-1,2-Dichloroethene Diisopropyl ether (DIPE) 1,1-Dichloroethane Ethyl tert-butyl ether (ETBE) 2,2-Dichloropropane cis-1,2-Dichloroethene Chloroform Bromochloromethane 1,1,1-Trichloroethane 1,1-Dichloropropene Carbon tetrachloride 1,2-Dichloroethane (EDC) Tertiary-amyl methyl ether (TAME) Benzene Trichloroethene 1,2-Dichloropropane Bromodichloromethane Dibromomethane cis-1,3-Dichloropropene Toluene trans-1,3-Dichloropropene 1,1,2-Trichloroethane 1,2-Dibromoethane (EDB) 1,3-Dichloropropane ND ND ND ND ND ND ND ND 70 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 140 ND ND ND ND ND 990 ND ND ND ND 40 40 10 40 40 40 40 40 40 40 40 40 40 40 40 40 40 10 40 40 40 10 10 40 10 10 40 40 40 40 80 40 40 40 40 100 100 100 10 100 100 100 100 100 100 100 100 100 200 100 200 100 100 20 100 100 100 20 20 200 20 20 100 100 100 100 200 100 100 100 100 Notes J- Report ug/m3 0.01 EG71806 18-Jul-17 18-Jul-17 H&P 8260SV " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " J Page 44 of 68 2470 Impala Drive Carlsbad, CA 92010 760-804-9678 Phone 760-804-9159 Fax H&P Mobile Geochemistry Inc. TRC Solutions 4393 Viewridge Ave., Suite A San Diego, CA 92123 Project: TRC071717-L6 Rev Project Number: 280845/PH01 / Otay Ranch Village 3 Project Manager: Mr. Brian Kettmann Reported: 31-Jul-17 12:20 Volatile Organic Compounds by H&P 8260SV H&P Mobile Geochemistry, Inc. Analyte Result MDL Reporting Limit Units Dilution Factor Batch Prepared Analyzed Method SGP-335-30 (E707064-10) Vapor Sampled: 18-Jul-17 Received: 18-Jul-17 Tetrachloroethene Dibromochloromethane Chlorobenzene Ethylbenzene 1,1,1,2-Tetrachloroethane m,p-Xylene o-Xylene Styrene Bromoform Isopropylbenzene (Cumene) 1,1,2,2-Tetrachloroethane 1,2,3-Trichloropropane n-Propylbenzene Bromobenzene 1,3,5-Trimethylbenzene 2-Chlorotoluene 4-Chlorotoluene tert-Butylbenzene 1,2,4-Trimethylbenzene sec-Butylbenzene p-Isopropyltoluene 1,3-Dichlorobenzene 1,4-Dichlorobenzene n-Butylbenzene 1,2-Dichlorobenzene 1,2-Dibromo-3-chloropropane 1,2,4-Trichlorobenzene Hexachlorobutadiene Naphthalene 1,2,3-Trichlorobenzene Tertiary-butyl alcohol (TBA) Surrogate: Dibromofluoromethane Surrogate: 1,2-Dichloroethane-d4 Surrogate: Toluene-d8 Surrogate: 4-Bromofluorobenzene ND ND ND 430 ND 1400 410 ND ND ND ND ND 80 ND 150 ND ND ND 370 ND 80 ND ND ND ND ND ND ND ND ND ND 20 40 10 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 400 40 40 20 40 500 20 100 20 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 1000 100 100 20 100 1000 98.8 % 93.2 % 108 % 99.9 % Notes J- Report ug/m3 0.01 EG71806 18-Jul-17 18-Jul-17 H&P 8260SV " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " 75-125 75-125 75-125 75-125 " " " " " " " " " " " " " " " " J J Page 45 of 68 2470 Impala Drive Carlsbad, CA 92010 760-804-9678 Phone 760-804-9159 Fax H&P Mobile Geochemistry Inc. TRC Solutions 4393 Viewridge Ave., Suite A San Diego, CA 92123 Project: TRC071717-L6 Rev Project Number: 280845/PH01 / Otay Ranch Village 3 Project Manager: Mr. Brian Kettmann Reported: 31-Jul-17 12:20 Volatile Organic Compounds by H&P 8260SV H&P Mobile Geochemistry, Inc. Analyte Result MDL Reporting Limit Units Dilution Factor Batch Prepared Analyzed Method SGP-335-5 (E707064-11) Vapor Sampled: 18-Jul-17 Received: 18-Jul-17 1,1-Difluoroethane (LCC) Dichlorodifluoromethane (F12) Chloromethane Vinyl chloride Bromomethane Chloroethane Trichlorofluoromethane (F11) 1,1-Dichloroethene 1,1,2 Trichlorotrifluoroethane (F113) Carbon disulfide Methylene chloride (Dichloromethane) Methyl tertiary-butyl ether (MTBE) trans-1,2-Dichloroethene Diisopropyl ether (DIPE) 1,1-Dichloroethane Ethyl tert-butyl ether (ETBE) 2,2-Dichloropropane cis-1,2-Dichloroethene Chloroform Bromochloromethane 1,1,1-Trichloroethane 1,1-Dichloropropene Carbon tetrachloride 1,2-Dichloroethane (EDC) Tertiary-amyl methyl ether (TAME) Benzene Trichloroethene 1,2-Dichloropropane Bromodichloromethane Dibromomethane cis-1,3-Dichloropropene Toluene trans-1,3-Dichloropropene 1,1,2-Trichloroethane 1,2-Dibromoethane (EDB) 1,3-Dichloropropane ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 40 ND ND ND ND ND 190 ND ND ND ND 40 40 10 40 40 40 40 40 40 40 40 40 40 40 40 40 40 10 40 40 40 10 10 40 10 10 40 40 40 40 80 40 40 40 40 100 100 100 10 100 100 100 100 100 100 100 100 100 200 100 200 100 100 20 100 100 100 20 20 200 20 20 100 100 100 100 200 100 100 100 100 Notes J- Report ug/m3 0.01 EG71806 18-Jul-17 18-Jul-17 H&P 8260SV " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " J Page 46 of 68 2470 Impala Drive Carlsbad, CA 92010 760-804-9678 Phone 760-804-9159 Fax H&P Mobile Geochemistry Inc. TRC Solutions 4393 Viewridge Ave., Suite A San Diego, CA 92123 Project: TRC071717-L6 Rev Project Number: 280845/PH01 / Otay Ranch Village 3 Project Manager: Mr. Brian Kettmann Reported: 31-Jul-17 12:20 Volatile Organic Compounds by H&P 8260SV H&P Mobile Geochemistry, Inc. Analyte Result MDL Reporting Limit Units Dilution Factor Batch Prepared Analyzed Method SGP-335-5 (E707064-11) Vapor Sampled: 18-Jul-17 Received: 18-Jul-17 Tetrachloroethene Dibromochloromethane Chlorobenzene Ethylbenzene 1,1,1,2-Tetrachloroethane m,p-Xylene o-Xylene Styrene Bromoform Isopropylbenzene (Cumene) 1,1,2,2-Tetrachloroethane 1,2,3-Trichloropropane n-Propylbenzene Bromobenzene 1,3,5-Trimethylbenzene 2-Chlorotoluene 4-Chlorotoluene tert-Butylbenzene 1,2,4-Trimethylbenzene sec-Butylbenzene p-Isopropyltoluene 1,3-Dichlorobenzene 1,4-Dichlorobenzene n-Butylbenzene 1,2-Dichlorobenzene 1,2-Dibromo-3-chloropropane 1,2,4-Trichlorobenzene Hexachlorobutadiene Naphthalene 1,2,3-Trichlorobenzene Tertiary-butyl alcohol (TBA) Surrogate: Dibromofluoromethane Surrogate: 1,2-Dichloroethane-d4 Surrogate: Toluene-d8 Surrogate: 4-Bromofluorobenzene ND ND ND 110 ND 460 160 ND ND ND ND ND ND ND 80 ND ND ND 260 ND ND ND ND ND ND ND ND ND ND ND ND 20 40 10 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 400 40 40 20 40 500 20 100 20 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 1000 100 100 20 100 1000 94.7 % 95.1 % 109 % 98.9 % Notes J- Report ug/m3 0.01 EG71806 18-Jul-17 18-Jul-17 H&P 8260SV " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " 75-125 75-125 75-125 75-125 " " " " " " " " " " " " " " " " J Page 47 of 68 2470 Impala Drive Carlsbad, CA 92010 760-804-9678 Phone 760-804-9159 Fax H&P Mobile Geochemistry Inc. TRC Solutions 4393 Viewridge Ave., Suite A San Diego, CA 92123 Project: TRC071717-L6 Rev Project Number: 280845/PH01 / Otay Ranch Village 3 Project Manager: Mr. Brian Kettmann Reported: 31-Jul-17 12:20 Volatile Organic Compounds by H&P 8260SV H&P Mobile Geochemistry, Inc. Analyte Result MDL Reporting Limit Units Dilution Factor Batch Prepared Analyzed Method SGP-352-25 (E707064-12) Vapor Sampled: 18-Jul-17 Received: 18-Jul-17 1,1-Difluoroethane (LCC) Dichlorodifluoromethane (F12) Chloromethane Vinyl chloride Bromomethane Chloroethane Trichlorofluoromethane (F11) 1,1-Dichloroethene 1,1,2 Trichlorotrifluoroethane (F113) Carbon disulfide Methylene chloride (Dichloromethane) Methyl tertiary-butyl ether (MTBE) trans-1,2-Dichloroethene Diisopropyl ether (DIPE) 1,1-Dichloroethane Ethyl tert-butyl ether (ETBE) 2,2-Dichloropropane cis-1,2-Dichloroethene Chloroform Bromochloromethane 1,1,1-Trichloroethane 1,1-Dichloropropene Carbon tetrachloride 1,2-Dichloroethane (EDC) Tertiary-amyl methyl ether (TAME) Benzene Trichloroethene 1,2-Dichloropropane Bromodichloromethane Dibromomethane cis-1,3-Dichloropropene Toluene trans-1,3-Dichloropropene 1,1,2-Trichloroethane 1,2-Dibromoethane (EDB) 1,3-Dichloropropane ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 10 ND ND ND ND ND ND 30 ND ND ND ND ND 240 ND ND ND ND 40 40 10 40 40 40 40 40 40 40 40 40 40 40 40 40 40 10 40 40 40 10 10 40 10 10 40 40 40 40 80 40 40 40 40 100 100 100 10 100 100 100 100 100 100 100 100 100 200 100 200 100 100 20 100 100 100 20 20 200 20 20 100 100 100 100 200 100 100 100 100 Notes J- Report ug/m3 0.01 EG71806 18-Jul-17 18-Jul-17 H&P 8260SV " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " J Page 48 of 68 2470 Impala Drive Carlsbad, CA 92010 760-804-9678 Phone 760-804-9159 Fax H&P Mobile Geochemistry Inc. TRC Solutions 4393 Viewridge Ave., Suite A San Diego, CA 92123 Project: TRC071717-L6 Rev Project Number: 280845/PH01 / Otay Ranch Village 3 Project Manager: Mr. Brian Kettmann Reported: 31-Jul-17 12:20 Volatile Organic Compounds by H&P 8260SV H&P Mobile Geochemistry, Inc. Analyte Result MDL Reporting Limit Units Dilution Factor Batch Prepared Analyzed Method SGP-352-25 (E707064-12) Vapor Sampled: 18-Jul-17 Received: 18-Jul-17 Tetrachloroethene Dibromochloromethane Chlorobenzene Ethylbenzene 1,1,1,2-Tetrachloroethane m,p-Xylene o-Xylene Styrene Bromoform Isopropylbenzene (Cumene) 1,1,2,2-Tetrachloroethane 1,2,3-Trichloropropane n-Propylbenzene Bromobenzene 1,3,5-Trimethylbenzene 2-Chlorotoluene 4-Chlorotoluene tert-Butylbenzene 1,2,4-Trimethylbenzene sec-Butylbenzene p-Isopropyltoluene 1,3-Dichlorobenzene 1,4-Dichlorobenzene n-Butylbenzene 1,2-Dichlorobenzene 1,2-Dibromo-3-chloropropane 1,2,4-Trichlorobenzene Hexachlorobutadiene Naphthalene 1,2,3-Trichlorobenzene Tertiary-butyl alcohol (TBA) Surrogate: Dibromofluoromethane Surrogate: 1,2-Dichloroethane-d4 Surrogate: Toluene-d8 Surrogate: 4-Bromofluorobenzene ND ND ND 160 ND 590 220 ND ND ND ND ND 40 ND 90 ND ND ND 240 ND ND ND ND ND ND ND ND ND ND ND ND 20 40 10 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 400 40 40 20 40 500 20 100 20 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 1000 100 100 20 100 1000 96.9 % 97.2 % 103 % 98.4 % Notes J- Report ug/m3 0.01 EG71806 18-Jul-17 18-Jul-17 H&P 8260SV " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " 75-125 75-125 75-125 75-125 " " " " " " " " " " " " " " " " J J Page 49 of 68 2470 Impala Drive Carlsbad, CA 92010 760-804-9678 Phone 760-804-9159 Fax H&P Mobile Geochemistry Inc. TRC Solutions 4393 Viewridge Ave., Suite A San Diego, CA 92123 Project: TRC071717-L6 Rev Project Number: 280845/PH01 / Otay Ranch Village 3 Project Manager: Mr. Brian Kettmann Reported: 31-Jul-17 12:20 Volatile Organic Compounds by H&P 8260SV H&P Mobile Geochemistry, Inc. Analyte Result MDL Reporting Limit Units Dilution Factor Batch Prepared Analyzed Method SGP-352-5 (E707064-13) Vapor Sampled: 18-Jul-17 Received: 18-Jul-17 1,1-Difluoroethane (LCC) Dichlorodifluoromethane (F12) Chloromethane Vinyl chloride Bromomethane Chloroethane Trichlorofluoromethane (F11) 1,1-Dichloroethene Carbon disulfide 1,1,2 Trichlorotrifluoroethane (F113) Methylene chloride (Dichloromethane) Methyl tertiary-butyl ether (MTBE) trans-1,2-Dichloroethene Diisopropyl ether (DIPE) 1,1-Dichloroethane Ethyl tert-butyl ether (ETBE) 2,2-Dichloropropane cis-1,2-Dichloroethene Chloroform Bromochloromethane 1,1,1-Trichloroethane 1,1-Dichloropropene Carbon tetrachloride 1,2-Dichloroethane (EDC) Tertiary-amyl methyl ether (TAME) Benzene Trichloroethene 1,2-Dichloropropane Bromodichloromethane Dibromomethane cis-1,3-Dichloropropene Toluene trans-1,3-Dichloropropene 1,1,2-Trichloroethane 1,2-Dibromoethane (EDB) 1,3-Dichloropropane ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 20 ND ND ND ND ND 120 ND ND ND ND 40 40 10 40 40 40 40 40 40 40 40 40 40 40 40 40 40 10 40 40 40 10 10 40 10 10 40 40 40 40 80 40 40 40 40 100 100 100 10 100 100 100 100 100 100 100 100 100 200 100 200 100 100 20 100 100 100 20 20 200 20 20 100 100 100 100 200 100 100 100 100 Notes J- Report ug/m3 0.01 EG71806 18-Jul-17 18-Jul-17 H&P 8260SV " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " J J Page 50 of 68 2470 Impala Drive Carlsbad, CA 92010 760-804-9678 Phone 760-804-9159 Fax H&P Mobile Geochemistry Inc. TRC Solutions 4393 Viewridge Ave., Suite A San Diego, CA 92123 Project: TRC071717-L6 Rev Project Number: 280845/PH01 / Otay Ranch Village 3 Project Manager: Mr. Brian Kettmann Reported: 31-Jul-17 12:20 Volatile Organic Compounds by H&P 8260SV H&P Mobile Geochemistry, Inc. Analyte Result MDL Reporting Limit Units Dilution Factor Batch Prepared Analyzed Method SGP-352-5 (E707064-13) Vapor Sampled: 18-Jul-17 Received: 18-Jul-17 Tetrachloroethene Dibromochloromethane Chlorobenzene Ethylbenzene 1,1,1,2-Tetrachloroethane m,p-Xylene o-Xylene Styrene Bromoform Isopropylbenzene (Cumene) 1,1,2,2-Tetrachloroethane 1,2,3-Trichloropropane n-Propylbenzene Bromobenzene 1,3,5-Trimethylbenzene 2-Chlorotoluene 4-Chlorotoluene tert-Butylbenzene 1,2,4-Trimethylbenzene sec-Butylbenzene p-Isopropyltoluene 1,3-Dichlorobenzene 1,4-Dichlorobenzene n-Butylbenzene 1,2-Dichlorobenzene 1,2-Dibromo-3-chloropropane 1,2,4-Trichlorobenzene Hexachlorobutadiene Naphthalene 1,2,3-Trichlorobenzene Tertiary-butyl alcohol (TBA) Surrogate: Dibromofluoromethane Surrogate: 1,2-Dichloroethane-d4 Surrogate: Toluene-d8 Surrogate: 4-Bromofluorobenzene ND ND ND 70 ND 320 140 ND ND ND ND ND ND ND 70 ND ND ND 260 ND ND ND ND ND ND ND ND ND ND ND ND 20 40 10 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 400 40 40 20 40 500 20 100 20 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 1000 100 100 20 100 1000 97.9 % 96.6 % 109 % 98.3 % Notes J- Report ug/m3 0.01 EG71806 18-Jul-17 18-Jul-17 H&P 8260SV " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " 75-125 75-125 75-125 75-125 " " " " " " " " " " " " " " " " J J Page 51 of 68 2470 Impala Drive Carlsbad, CA 92010 760-804-9678 Phone 760-804-9159 Fax H&P Mobile Geochemistry Inc. TRC Solutions 4393 Viewridge Ave., Suite A San Diego, CA 92123 Project: TRC071717-L6 Rev Project Number: 280845/PH01 / Otay Ranch Village 3 Project Manager: Mr. Brian Kettmann Reported: 31-Jul-17 12:20 Volatile Organic Compounds by H&P 8260SV H&P Mobile Geochemistry, Inc. Analyte Result MDL Reporting Limit Units Dilution Factor Batch Prepared Analyzed Method SGP-73-25 (E707064-14) Vapor Sampled: 18-Jul-17 Received: 18-Jul-17 1,1-Difluoroethane (LCC) Dichlorodifluoromethane (F12) Chloromethane Vinyl chloride Bromomethane Chloroethane Trichlorofluoromethane (F11) 1,1-Dichloroethene Carbon disulfide 1,1,2 Trichlorotrifluoroethane (F113) Methylene chloride (Dichloromethane) Methyl tertiary-butyl ether (MTBE) trans-1,2-Dichloroethene Diisopropyl ether (DIPE) 1,1-Dichloroethane Ethyl tert-butyl ether (ETBE) 2,2-Dichloropropane cis-1,2-Dichloroethene Chloroform Bromochloromethane 1,1,1-Trichloroethane 1,1-Dichloropropene Carbon tetrachloride 1,2-Dichloroethane (EDC) Tertiary-amyl methyl ether (TAME) Benzene Trichloroethene 1,2-Dichloropropane Bromodichloromethane Dibromomethane cis-1,3-Dichloropropene Toluene trans-1,3-Dichloropropene 1,1,2-Trichloroethane 1,2-Dibromoethane (EDB) 1,3-Dichloropropane ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 20 ND ND ND ND ND ND 70 ND ND ND ND ND 850 ND ND ND ND 40 40 10 40 40 40 40 40 40 40 40 40 40 40 40 40 40 10 40 40 40 10 10 40 10 10 40 40 40 40 80 40 40 40 40 100 100 100 10 100 100 100 100 100 100 100 100 100 200 100 200 100 100 20 100 100 100 20 20 200 20 20 100 100 100 100 200 100 100 100 100 Notes J- Report ug/m3 0.01 EG71806 18-Jul-17 18-Jul-17 H&P 8260SV " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " J Page 52 of 68 2470 Impala Drive Carlsbad, CA 92010 760-804-9678 Phone 760-804-9159 Fax H&P Mobile Geochemistry Inc. TRC Solutions 4393 Viewridge Ave., Suite A San Diego, CA 92123 Project: TRC071717-L6 Rev Project Number: 280845/PH01 / Otay Ranch Village 3 Project Manager: Mr. Brian Kettmann Reported: 31-Jul-17 12:20 Volatile Organic Compounds by H&P 8260SV H&P Mobile Geochemistry, Inc. Analyte Result MDL Reporting Limit Units Dilution Factor Batch Prepared Analyzed Method SGP-73-25 (E707064-14) Vapor Sampled: 18-Jul-17 Received: 18-Jul-17 Tetrachloroethene Dibromochloromethane Chlorobenzene Ethylbenzene 1,1,1,2-Tetrachloroethane m,p-Xylene o-Xylene Styrene Bromoform Isopropylbenzene (Cumene) 1,1,2,2-Tetrachloroethane 1,2,3-Trichloropropane n-Propylbenzene Bromobenzene 1,3,5-Trimethylbenzene 2-Chlorotoluene 4-Chlorotoluene tert-Butylbenzene 1,2,4-Trimethylbenzene sec-Butylbenzene p-Isopropyltoluene 1,3-Dichlorobenzene 1,4-Dichlorobenzene n-Butylbenzene 1,2-Dichlorobenzene 1,2-Dibromo-3-chloropropane 1,2,4-Trichlorobenzene Hexachlorobutadiene Naphthalene 1,2,3-Trichlorobenzene Tertiary-butyl alcohol (TBA) Surrogate: Dibromofluoromethane Surrogate: 1,2-Dichloroethane-d4 Surrogate: Toluene-d8 Surrogate: 4-Bromofluorobenzene ND ND ND 370 ND 1300 380 ND ND ND ND ND 110 ND 170 ND ND ND 420 ND 70 ND ND ND ND ND ND ND ND ND ND 20 40 10 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 400 40 40 20 40 500 20 100 20 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 1000 100 100 20 100 1000 98.6 % 100 % 108 % 101 % Notes J- Report ug/m3 0.01 EG71806 18-Jul-17 18-Jul-17 H&P 8260SV " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " 75-125 75-125 75-125 75-125 " " " " " " " " " " " " " " " " J Page 53 of 68 2470 Impala Drive Carlsbad, CA 92010 760-804-9678 Phone 760-804-9159 Fax H&P Mobile Geochemistry Inc. TRC Solutions 4393 Viewridge Ave., Suite A San Diego, CA 92123 Project: TRC071717-L6 Rev Project Number: 280845/PH01 / Otay Ranch Village 3 Project Manager: Mr. Brian Kettmann Reported: 31-Jul-17 12:20 Volatile Organic Compounds by H&P 8260SV H&P Mobile Geochemistry, Inc. Analyte Result MDL Reporting Limit Units Dilution Factor Batch Prepared Analyzed Method SGP-73-5 (E707064-15) Vapor Sampled: 18-Jul-17 Received: 18-Jul-17 1,1-Difluoroethane (LCC) Dichlorodifluoromethane (F12) Chloromethane Vinyl chloride Bromomethane Chloroethane Trichlorofluoromethane (F11) 1,1-Dichloroethene Carbon disulfide 1,1,2 Trichlorotrifluoroethane (F113) Methylene chloride (Dichloromethane) Methyl tertiary-butyl ether (MTBE) trans-1,2-Dichloroethene Diisopropyl ether (DIPE) 1,1-Dichloroethane Ethyl tert-butyl ether (ETBE) 2,2-Dichloropropane cis-1,2-Dichloroethene Chloroform Bromochloromethane 1,1,1-Trichloroethane 1,1-Dichloropropene Carbon tetrachloride 1,2-Dichloroethane (EDC) Tertiary-amyl methyl ether (TAME) Benzene Trichloroethene 1,2-Dichloropropane Bromodichloromethane Dibromomethane cis-1,3-Dichloropropene Toluene trans-1,3-Dichloropropene 1,1,2-Trichloroethane 1,2-Dibromoethane (EDB) 1,3-Dichloropropane ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 10 ND ND ND ND ND ND ND ND ND ND 40 40 10 40 40 40 40 40 40 40 40 40 40 40 40 40 40 10 40 40 40 10 10 40 10 10 40 40 40 40 80 40 40 40 40 Notes J- Report 100 100 100 10 100 100 100 100 100 100 100 100 100 200 100 200 100 100 20 100 100 100 20 20 200 20 20 100 100 100 100 200 100 100 100 100 ug/m3 0.01 EG71806 18-Jul-17 18-Jul-17 H&P 8260SV " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " J Page 54 of 68 2470 Impala Drive Carlsbad, CA 92010 760-804-9678 Phone 760-804-9159 Fax H&P Mobile Geochemistry Inc. TRC Solutions 4393 Viewridge Ave., Suite A San Diego, CA 92123 Project: TRC071717-L6 Rev Project Number: 280845/PH01 / Otay Ranch Village 3 Project Manager: Mr. Brian Kettmann Reported: 31-Jul-17 12:20 Volatile Organic Compounds by H&P 8260SV H&P Mobile Geochemistry, Inc. Analyte Result MDL Reporting Limit Units Dilution Factor Batch Prepared Analyzed Method SGP-73-5 (E707064-15) Vapor Sampled: 18-Jul-17 Received: 18-Jul-17 Tetrachloroethene Dibromochloromethane Chlorobenzene Ethylbenzene 1,1,1,2-Tetrachloroethane m,p-Xylene o-Xylene Styrene Bromoform Isopropylbenzene (Cumene) 1,1,2,2-Tetrachloroethane 1,2,3-Trichloropropane n-Propylbenzene Bromobenzene 1,3,5-Trimethylbenzene 2-Chlorotoluene 4-Chlorotoluene tert-Butylbenzene 1,2,4-Trimethylbenzene sec-Butylbenzene p-Isopropyltoluene 1,3-Dichlorobenzene 1,4-Dichlorobenzene n-Butylbenzene 1,2-Dichlorobenzene 1,2-Dibromo-3-chloropropane 1,2,4-Trichlorobenzene Hexachlorobutadiene Naphthalene 1,2,3-Trichlorobenzene Tertiary-butyl alcohol (TBA) Surrogate: Dibromofluoromethane Surrogate: 1,2-Dichloroethane-d4 Surrogate: Toluene-d8 Surrogate: 4-Bromofluorobenzene ND ND ND ND ND 100 40 ND ND ND ND ND ND ND ND ND ND ND 120 ND ND ND ND ND ND ND ND ND ND ND ND 20 40 10 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 400 40 40 20 40 500 20 100 20 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 1000 100 100 20 100 1000 94.3 % 95.0 % 107 % 97.9 % Notes J- Report ug/m3 0.01 EG71806 18-Jul-17 18-Jul-17 H&P 8260SV " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " 75-125 75-125 75-125 75-125 " " " " " " " " " " " " " " " " J Page 55 of 68 2470 Impala Drive Carlsbad, CA 92010 760-804-9678 Phone 760-804-9159 Fax H&P Mobile Geochemistry Inc. TRC Solutions 4393 Viewridge Ave., Suite A San Diego, CA 92123 Project: TRC071717-L6 Rev Project Number: 280845/PH01 / Otay Ranch Village 3 Project Manager: Mr. Brian Kettmann Reported: 31-Jul-17 12:20 Volatile Organic Compounds by H&P 8260SV H&P Mobile Geochemistry, Inc. Analyte Result MDL Reporting Limit Units Dilution Factor Batch Prepared Analyzed Method SGP-60-25 (E707064-16) Vapor Sampled: 18-Jul-17 Received: 18-Jul-17 1,1-Difluoroethane (LCC) Dichlorodifluoromethane (F12) Chloromethane Vinyl chloride Bromomethane Chloroethane Trichlorofluoromethane (F11) 1,1-Dichloroethene Carbon disulfide 1,1,2 Trichlorotrifluoroethane (F113) Methylene chloride (Dichloromethane) Methyl tertiary-butyl ether (MTBE) trans-1,2-Dichloroethene Diisopropyl ether (DIPE) 1,1-Dichloroethane Ethyl tert-butyl ether (ETBE) 2,2-Dichloropropane cis-1,2-Dichloroethene Chloroform Bromochloromethane 1,1,1-Trichloroethane 1,1-Dichloropropene Carbon tetrachloride 1,2-Dichloroethane (EDC) Tertiary-amyl methyl ether (TAME) Benzene Trichloroethene 1,2-Dichloropropane Bromodichloromethane Dibromomethane cis-1,3-Dichloropropene Toluene trans-1,3-Dichloropropene 1,1,2-Trichloroethane 1,2-Dibromoethane (EDB) 1,3-Dichloropropane ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 180 ND ND ND ND 40 40 10 40 40 40 40 40 40 40 40 40 40 40 40 40 40 10 40 40 40 10 10 40 10 10 40 40 40 40 80 40 40 40 40 100 100 100 10 100 100 100 100 100 100 100 100 100 200 100 200 100 100 20 100 100 100 20 20 200 20 20 100 100 100 100 200 100 100 100 100 Notes J- Report ug/m3 0.01 EG71806 18-Jul-17 18-Jul-17 H&P 8260SV " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " J Page 56 of 68 2470 Impala Drive Carlsbad, CA 92010 760-804-9678 Phone 760-804-9159 Fax H&P Mobile Geochemistry Inc. TRC Solutions 4393 Viewridge Ave., Suite A San Diego, CA 92123 Project: TRC071717-L6 Rev Project Number: 280845/PH01 / Otay Ranch Village 3 Project Manager: Mr. Brian Kettmann Reported: 31-Jul-17 12:20 Volatile Organic Compounds by H&P 8260SV H&P Mobile Geochemistry, Inc. Analyte Result MDL Reporting Limit Units Dilution Factor Batch Prepared Analyzed Method SGP-60-25 (E707064-16) Vapor Sampled: 18-Jul-17 Received: 18-Jul-17 Tetrachloroethene Dibromochloromethane Chlorobenzene Ethylbenzene 1,1,1,2-Tetrachloroethane m,p-Xylene o-Xylene Styrene Bromoform Isopropylbenzene (Cumene) 1,1,2,2-Tetrachloroethane 1,2,3-Trichloropropane n-Propylbenzene Bromobenzene 1,3,5-Trimethylbenzene 2-Chlorotoluene 4-Chlorotoluene tert-Butylbenzene 1,2,4-Trimethylbenzene sec-Butylbenzene p-Isopropyltoluene 1,3-Dichlorobenzene 1,4-Dichlorobenzene n-Butylbenzene 1,2-Dichlorobenzene 1,2-Dibromo-3-chloropropane 1,2,4-Trichlorobenzene Hexachlorobutadiene Naphthalene 1,2,3-Trichlorobenzene Tertiary-butyl alcohol (TBA) Surrogate: Dibromofluoromethane Surrogate: 1,2-Dichloroethane-d4 Surrogate: Toluene-d8 Surrogate: 4-Bromofluorobenzene ND ND ND ND ND 130 50 ND ND ND ND ND ND ND 60 ND ND ND 160 ND ND ND ND ND ND ND ND ND ND ND ND 20 40 10 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 400 40 40 20 40 500 20 100 20 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 1000 100 100 20 100 1000 94.7 % 97.7 % 106 % 98.3 % Notes J- Report ug/m3 0.01 EG71806 18-Jul-17 18-Jul-17 H&P 8260SV " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " 75-125 75-125 75-125 75-125 " " " " " " " " " " " " " " " " J J Page 57 of 68 2470 Impala Drive Carlsbad, CA 92010 760-804-9678 Phone 760-804-9159 Fax H&P Mobile Geochemistry Inc. TRC Solutions 4393 Viewridge Ave., Suite A San Diego, CA 92123 Project: TRC071717-L6 Rev Project Number: 280845/PH01 / Otay Ranch Village 3 Project Manager: Mr. Brian Kettmann Reported: 31-Jul-17 12:20 Volatile Organic Compounds by H&P 8260SV H&P Mobile Geochemistry, Inc. Analyte Result MDL Reporting Limit Units Dilution Factor Batch Prepared Analyzed Method SGP-60-5 (E707064-17) Vapor Sampled: 18-Jul-17 Received: 18-Jul-17 1,1-Difluoroethane (LCC) Dichlorodifluoromethane (F12) Chloromethane Vinyl chloride Bromomethane Chloroethane Trichlorofluoromethane (F11) 1,1-Dichloroethene 1,1,2 Trichlorotrifluoroethane (F113) Carbon disulfide Methylene chloride (Dichloromethane) Methyl tertiary-butyl ether (MTBE) trans-1,2-Dichloroethene Diisopropyl ether (DIPE) 1,1-Dichloroethane Ethyl tert-butyl ether (ETBE) 2,2-Dichloropropane cis-1,2-Dichloroethene Chloroform Bromochloromethane 1,1,1-Trichloroethane 1,1-Dichloropropene Carbon tetrachloride 1,2-Dichloroethane (EDC) Tertiary-amyl methyl ether (TAME) Benzene Trichloroethene 1,2-Dichloropropane Bromodichloromethane Dibromomethane cis-1,3-Dichloropropene Toluene trans-1,3-Dichloropropene 1,1,2-Trichloroethane 1,2-Dibromoethane (EDB) 1,3-Dichloropropane ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 30 ND ND ND ND ND 380 ND ND ND ND 40 40 10 40 40 40 40 40 40 40 40 40 40 40 40 40 40 10 40 40 40 10 10 40 10 10 40 40 40 40 80 40 40 40 40 Notes J- Report 100 100 100 10 100 100 100 100 100 100 100 100 100 200 100 200 100 100 20 100 100 100 20 20 200 20 20 100 100 100 100 200 100 100 100 100 ug/m3 0.01 EG71806 18-Jul-17 18-Jul-17 H&P 8260SV " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Page 58 of 68 2470 Impala Drive Carlsbad, CA 92010 760-804-9678 Phone 760-804-9159 Fax H&P Mobile Geochemistry Inc. TRC Solutions 4393 Viewridge Ave., Suite A San Diego, CA 92123 Project: TRC071717-L6 Rev Project Number: 280845/PH01 / Otay Ranch Village 3 Project Manager: Mr. Brian Kettmann Reported: 31-Jul-17 12:20 Volatile Organic Compounds by H&P 8260SV H&P Mobile Geochemistry, Inc. Analyte Result MDL Reporting Limit Units Dilution Factor Batch Prepared Analyzed Method SGP-60-5 (E707064-17) Vapor Sampled: 18-Jul-17 Received: 18-Jul-17 Tetrachloroethene Dibromochloromethane Chlorobenzene Ethylbenzene 1,1,1,2-Tetrachloroethane m,p-Xylene o-Xylene Styrene Bromoform Isopropylbenzene (Cumene) 1,1,2,2-Tetrachloroethane 1,2,3-Trichloropropane n-Propylbenzene Bromobenzene 1,3,5-Trimethylbenzene 2-Chlorotoluene 4-Chlorotoluene tert-Butylbenzene 1,2,4-Trimethylbenzene sec-Butylbenzene p-Isopropyltoluene 1,3-Dichlorobenzene 1,4-Dichlorobenzene n-Butylbenzene 1,2-Dichlorobenzene 1,2-Dibromo-3-chloropropane 1,2,4-Trichlorobenzene Hexachlorobutadiene Naphthalene 1,2,3-Trichlorobenzene Tertiary-butyl alcohol (TBA) Surrogate: Dibromofluoromethane Surrogate: 1,2-Dichloroethane-d4 Surrogate: Toluene-d8 Surrogate: 4-Bromofluorobenzene ND ND ND 350 ND 1200 470 ND ND ND ND ND 130 ND 300 ND ND ND 800 ND 40 ND ND ND ND ND ND ND ND ND ND 20 40 10 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 400 40 40 20 40 500 20 100 20 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 1000 100 100 20 100 1000 95.8 % 99.1 % 108 % 103 % Notes J- Report ug/m3 0.01 EG71806 18-Jul-17 18-Jul-17 H&P 8260SV " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " 75-125 75-125 75-125 75-125 " " " " " " " " " " " " " " " " J Page 59 of 68 2470 Impala Drive Carlsbad, CA 92010 760-804-9678 Phone 760-804-9159 Fax H&P Mobile Geochemistry Inc. TRC Solutions 4393 Viewridge Ave., Suite A San Diego, CA 92123 Project: TRC071717-L6 Rev Project Number: 280845/PH01 / Otay Ranch Village 3 Project Manager: Mr. Brian Kettmann Reported: 31-Jul-17 12:20 Soil Gas and Vapor Analysis - Quality Control H&P Mobile Geochemistry, Inc. Analyte Result Reporting Limit Units Spike Level Source Result %REC %REC Limits RPD RPD Limit Notes Batch EG71708 - GC Prepared & Analyzed: 17-Jul-17 Blank (EG71708-BLK1) Methane ND 10 ppmv Batch EG71807 - GC Prepared & Analyzed: 18-Jul-17 Blank (EG71807-BLK1) Methane ND 10 ppmv Page 60 of 68 2470 Impala Drive Carlsbad, CA 92010 760-804-9678 Phone 760-804-9159 Fax H&P Mobile Geochemistry Inc. TRC Solutions 4393 Viewridge Ave., Suite A San Diego, CA 92123 Project: TRC071717-L6 Rev Project Number: 280845/PH01 / Otay Ranch Village 3 Project Manager: Mr. Brian Kettmann Reported: 31-Jul-17 12:20 Volatile Organic Compounds by H&P 8260SV - Quality Control H&P Mobile Geochemistry, Inc. Analyte Result Reporting Limit Units Spike Level Source Result %REC %REC Limits RPD RPD Limit Notes Batch EG71707 - EPA 5030 Prepared & Analyzed: 17-Jul-17 Blank (EG71707-BLK1) 1,1-Difluoroethane (LCC) Dichlorodifluoromethane (F12) Chloromethane Vinyl chloride Bromomethane Chloroethane Trichlorofluoromethane (F11) 1,1-Dichloroethene 1,1,2 Trichlorotrifluoroethane (F113) Carbon disulfide Methylene chloride (Dichloromethane) Methyl tertiary-butyl ether (MTBE) trans-1,2-Dichloroethene Diisopropyl ether (DIPE) 1,1-Dichloroethane Ethyl tert-butyl ether (ETBE) 2,2-Dichloropropane cis-1,2-Dichloroethene Chloroform Bromochloromethane 1,1,1-Trichloroethane 1,1-Dichloropropene Carbon tetrachloride 1,2-Dichloroethane (EDC) Tertiary-amyl methyl ether (TAME) Benzene Trichloroethene 1,2-Dichloropropane Bromodichloromethane Dibromomethane cis-1,3-Dichloropropene Toluene trans-1,3-Dichloropropene 1,1,2-Trichloroethane ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 10 ND ND ND ND ND ND ND ND 100 100 100 10 100 100 100 100 100 100 100 100 100 200 100 200 100 100 20 100 100 100 20 20 200 20 20 100 100 100 100 200 100 100 ug/m3 " " " " " " " " " " " " " " " " " " " " " " " " " B-03, J " " " " " " " " Page 61 of 68 2470 Impala Drive Carlsbad, CA 92010 760-804-9678 Phone 760-804-9159 Fax H&P Mobile Geochemistry Inc. TRC Solutions 4393 Viewridge Ave., Suite A San Diego, CA 92123 Project: TRC071717-L6 Rev Project Number: 280845/PH01 / Otay Ranch Village 3 Project Manager: Mr. Brian Kettmann Reported: 31-Jul-17 12:20 Volatile Organic Compounds by H&P 8260SV - Quality Control H&P Mobile Geochemistry, Inc. Analyte Result Reporting Limit Units Spike Level Source Result %REC %REC Limits RPD RPD Limit Notes Batch EG71707 - EPA 5030 Prepared & Analyzed: 17-Jul-17 Blank (EG71707-BLK1) 1,2-Dibromoethane (EDB) 1,3-Dichloropropane Tetrachloroethene Dibromochloromethane Chlorobenzene Ethylbenzene 1,1,1,2-Tetrachloroethane m,p-Xylene o-Xylene Styrene Bromoform Isopropylbenzene (Cumene) 1,1,2,2-Tetrachloroethane 1,2,3-Trichloropropane n-Propylbenzene Bromobenzene 1,3,5-Trimethylbenzene 2-Chlorotoluene 4-Chlorotoluene tert-Butylbenzene 1,2,4-Trimethylbenzene sec-Butylbenzene p-Isopropyltoluene 1,3-Dichlorobenzene 1,4-Dichlorobenzene n-Butylbenzene 1,2-Dichlorobenzene 1,2-Dibromo-3-chloropropane 1,2,4-Trichlorobenzene Hexachlorobutadiene Naphthalene 1,2,3-Trichlorobenzene Tertiary-butyl alcohol (TBA) ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 100 100 20 100 20 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 1000 100 100 20 100 1000 ug/m3 " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Page 62 of 68 2470 Impala Drive Carlsbad, CA 92010 760-804-9678 Phone 760-804-9159 Fax H&P Mobile Geochemistry Inc. TRC Solutions 4393 Viewridge Ave., Suite A San Diego, CA 92123 Project: TRC071717-L6 Rev Project Number: 280845/PH01 / Otay Ranch Village 3 Project Manager: Mr. Brian Kettmann Reported: 31-Jul-17 12:20 Volatile Organic Compounds by H&P 8260SV - Quality Control H&P Mobile Geochemistry, Inc. Analyte Result Reporting Limit Units Spike Level Source Result %REC %REC Limits RPD RPD Limit Notes Batch EG71707 - EPA 5030 Prepared & Analyzed: 17-Jul-17 Blank (EG71707-BLK1) Surrogate: Dibromofluoromethane 523 ug/m3 500 105 75-125 Surrogate: 1,2-Dichloroethane-d4 539 " 500 108 75-125 Surrogate: Toluene-d8 525 " 500 105 75-125 Surrogate: 4-Bromofluorobenzene 501 " 500 100 75-125 Prepared & Analyzed: 17-Jul-17 LCS (EG71707-BS1) Dichlorodifluoromethane (F12) Vinyl chloride Chloroethane Trichlorofluoromethane (F11) 1,1-Dichloroethene 1,1,2 Trichlorotrifluoroethane (F113) Methylene chloride (Dichloromethane) trans-1,2-Dichloroethene 1,1-Dichloroethane cis-1,2-Dichloroethene Chloroform 1,1,1-Trichloroethane Carbon tetrachloride 1,2-Dichloroethane (EDC) Benzene Trichloroethene Toluene 1,1,2-Trichloroethane Tetrachloroethene Ethylbenzene 1,1,1,2-Tetrachloroethane m,p-Xylene o-Xylene 1,1,2,2-Tetrachloroethane 4700 5000 5000 5200 5700 6800 5300 5500 5200 5600 5400 5300 5400 5000 5200 5700 5200 5200 5500 5400 5700 11000 5300 5000 500 50 500 500 500 500 500 500 500 500 100 500 100 100 100 100 1000 500 100 500 500 500 500 500 ug/m3 5000 94.2 70-130 " 5000 100 70-130 " 5000 100 70-130 " 5000 103 70-130 " 5000 114 70-130 " 5000 136 70-130 " 5000 105 70-130 " 5000 109 70-130 " 5000 105 70-130 " 5000 111 70-130 " 5000 108 70-130 " 5000 106 70-130 " 5000 108 70-130 " 5000 99.4 70-130 " 5000 104 70-130 " 5000 115 70-130 " 5000 104 70-130 " 5000 103 70-130 " 5000 110 70-130 " 5000 108 70-130 " 5000 114 70-130 " 10000 105 70-130 " 5000 106 70-130 " 5000 100 70-130 Surrogate: Dibromofluoromethane 2570 " 2500 103 75-125 Surrogate: 1,2-Dichloroethane-d4 2460 " 2500 98.4 75-125 QL-1H Page 63 of 68 2470 Impala Drive Carlsbad, CA 92010 760-804-9678 Phone 760-804-9159 Fax H&P Mobile Geochemistry Inc. TRC Solutions 4393 Viewridge Ave., Suite A San Diego, CA 92123 Project: TRC071717-L6 Rev Project Number: 280845/PH01 / Otay Ranch Village 3 Project Manager: Mr. Brian Kettmann Reported: 31-Jul-17 12:20 Volatile Organic Compounds by H&P 8260SV - Quality Control H&P Mobile Geochemistry, Inc. Analyte Result Reporting Limit Units Spike Level Source Result %REC %REC Limits RPD RPD Limit Notes Batch EG71707 - EPA 5030 Prepared & Analyzed: 17-Jul-17 LCS (EG71707-BS1) Surrogate: Toluene-d8 2710 ug/m3 2500 108 75-125 Surrogate: 4-Bromofluorobenzene 2660 " 2500 106 75-125 Batch EG71806 - EPA 5030 Prepared & Analyzed: 18-Jul-17 Blank (EG71806-BLK1) 1,1-Difluoroethane (LCC) Dichlorodifluoromethane (F12) Chloromethane Vinyl chloride Bromomethane Chloroethane Trichlorofluoromethane (F11) 1,1-Dichloroethene 1,1,2 Trichlorotrifluoroethane (F113) Carbon disulfide Methylene chloride (Dichloromethane) Methyl tertiary-butyl ether (MTBE) trans-1,2-Dichloroethene Diisopropyl ether (DIPE) 1,1-Dichloroethane Ethyl tert-butyl ether (ETBE) 2,2-Dichloropropane cis-1,2-Dichloroethene Chloroform Bromochloromethane 1,1,1-Trichloroethane 1,1-Dichloropropene Carbon tetrachloride 1,2-Dichloroethane (EDC) Tertiary-amyl methyl ether (TAME) Benzene Trichloroethene ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 100 100 100 10 100 100 100 100 100 100 100 100 100 200 100 200 100 100 20 100 100 100 20 20 200 20 20 ug/m3 " " " " " " " " " " " " " " " " " " " " " " " " " " Page 64 of 68 2470 Impala Drive Carlsbad, CA 92010 760-804-9678 Phone 760-804-9159 Fax H&P Mobile Geochemistry Inc. TRC Solutions 4393 Viewridge Ave., Suite A San Diego, CA 92123 Project: TRC071717-L6 Rev Project Number: 280845/PH01 / Otay Ranch Village 3 Project Manager: Mr. Brian Kettmann Reported: 31-Jul-17 12:20 Volatile Organic Compounds by H&P 8260SV - Quality Control H&P Mobile Geochemistry, Inc. Analyte Result Reporting Limit Units Spike Level Source Result %REC %REC Limits RPD RPD Limit Notes Batch EG71806 - EPA 5030 Prepared & Analyzed: 18-Jul-17 Blank (EG71806-BLK1) 1,2-Dichloropropane Bromodichloromethane Dibromomethane cis-1,3-Dichloropropene Toluene trans-1,3-Dichloropropene 1,1,2-Trichloroethane 1,2-Dibromoethane (EDB) 1,3-Dichloropropane Tetrachloroethene Dibromochloromethane Chlorobenzene Ethylbenzene 1,1,1,2-Tetrachloroethane m,p-Xylene o-Xylene Styrene Bromoform Isopropylbenzene (Cumene) 1,1,2,2-Tetrachloroethane 1,2,3-Trichloropropane n-Propylbenzene Bromobenzene 1,3,5-Trimethylbenzene 2-Chlorotoluene 4-Chlorotoluene tert-Butylbenzene 1,2,4-Trimethylbenzene sec-Butylbenzene p-Isopropyltoluene 1,3-Dichlorobenzene 1,4-Dichlorobenzene n-Butylbenzene 1,2-Dichlorobenzene ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 100 100 100 100 200 100 100 100 100 20 100 20 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 ug/m3 " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " Page 65 of 68 2470 Impala Drive Carlsbad, CA 92010 760-804-9678 Phone 760-804-9159 Fax H&P Mobile Geochemistry Inc. TRC Solutions 4393 Viewridge Ave., Suite A San Diego, CA 92123 Project: TRC071717-L6 Rev Project Number: 280845/PH01 / Otay Ranch Village 3 Project Manager: Mr. Brian Kettmann Reported: 31-Jul-17 12:20 Volatile Organic Compounds by H&P 8260SV - Quality Control H&P Mobile Geochemistry, Inc. Analyte Result Reporting Limit Units Spike Level Source Result %REC %REC Limits RPD RPD Limit Notes Batch EG71806 - EPA 5030 Prepared & Analyzed: 18-Jul-17 Blank (EG71806-BLK1) 1,2-Dibromo-3-chloropropane 1,2,4-Trichlorobenzene Hexachlorobutadiene Naphthalene 1,2,3-Trichlorobenzene Tertiary-butyl alcohol (TBA) ND ND ND ND ND ND 1000 100 100 20 100 1000 ug/m3 " " " " " Surrogate: Dibromofluoromethane 498 " 500 99.5 75-125 Surrogate: 1,2-Dichloroethane-d4 493 " 500 98.6 75-125 Surrogate: Toluene-d8 523 " 500 105 75-125 Surrogate: 4-Bromofluorobenzene 500 " 500 99.9 75-125 Prepared & Analyzed: 18-Jul-17 LCS (EG71806-BS1) Dichlorodifluoromethane (F12) Vinyl chloride Chloroethane Trichlorofluoromethane (F11) 1,1-Dichloroethene 1,1,2 Trichlorotrifluoroethane (F113) Methylene chloride (Dichloromethane) trans-1,2-Dichloroethene 1,1-Dichloroethane cis-1,2-Dichloroethene Chloroform 1,1,1-Trichloroethane Carbon tetrachloride 1,2-Dichloroethane (EDC) Benzene Trichloroethene Toluene 1,1,2-Trichloroethane Tetrachloroethene Ethylbenzene 1,1,1,2-Tetrachloroethane 4700 4700 4700 4900 5800 6900 5600 5500 5300 5700 5600 5200 5400 5300 5300 5800 5300 5600 5400 5400 5700 500 50 500 500 500 500 500 500 500 500 100 500 100 100 100 100 1000 500 100 500 500 ug/m3 5000 93.9 70-130 " 5000 94.3 70-130 " 5000 95.0 70-130 " 5000 98.5 70-130 " 5000 116 70-130 " 5000 137 70-130 " 5000 111 70-130 " 5000 111 70-130 " 5000 107 70-130 " 5000 114 70-130 " 5000 112 70-130 " 5000 104 70-130 " 5000 108 70-130 " 5000 107 70-130 " 5000 106 70-130 " 5000 116 70-130 " 5000 107 70-130 " 5000 112 70-130 " 5000 107 70-130 " 5000 109 70-130 " 5000 115 70-130 QL-1H Page 66 of 68 2470 Impala Drive Carlsbad, CA 92010 760-804-9678 Phone 760-804-9159 Fax H&P Mobile Geochemistry Inc. TRC Solutions 4393 Viewridge Ave., Suite A San Diego, CA 92123 Project: TRC071717-L6 Rev Project Number: 280845/PH01 / Otay Ranch Village 3 Project Manager: Mr. Brian Kettmann Reported: 31-Jul-17 12:20 Volatile Organic Compounds by H&P 8260SV - Quality Control H&P Mobile Geochemistry, Inc. Analyte Result Reporting Limit Units Spike Level Source Result %REC %REC Limits RPD RPD Limit Notes Batch EG71806 - EPA 5030 Prepared & Analyzed: 18-Jul-17 LCS (EG71806-BS1) m,p-Xylene o-Xylene 1,1,2,2-Tetrachloroethane 11000 5400 5300 500 500 500 ug/m3 10000 105 70-130 " 5000 109 70-130 " 5000 106 70-130 Surrogate: Dibromofluoromethane 2590 " 2500 104 75-125 Surrogate: 1,2-Dichloroethane-d4 2560 " 2500 102 75-125 Surrogate: Toluene-d8 2670 " 2500 107 75-125 Surrogate: 4-Bromofluorobenzene 2590 " 2500 103 75-125 Page 67 of 68 2470 Impala Drive Carlsbad, CA 92010 760-804-9678 Phone 760-804-9159 Fax H&P Mobile Geochemistry Inc. TRC Solutions 4393 Viewridge Ave., Suite A San Diego, CA 92123 Project: TRC071717-L6 Rev Project Number: 280845/PH01 / Otay Ranch Village 3 Project Manager: Mr. Brian Kettmann Reported: 31-Jul-17 12:20 Notes and Definitions QL-1H The LCS and/or LCSD recoveries fell above the established control specifications for this analyte. Any result for this compound is qualified and should be considered biased high. J- Report This sample is reported to the MDL or LOD determined for this method. All confirmed hits above the listed MDL or LOD value and below the RL/LOQ, will be flagged with a "J" result. If an MDL or LOD is not listed, the analyte is ND at the RL. J Detected but below the RL/LOQ; therefore, result is an estimated concentration. J Detected but below the RL/LOQ; therefore, result is an estimated concentration. B-03 Analyte present in the blank above the reported MDL but below the reporting limit. B-03 Analyte present in the blank above the reported MDL but below the reporting limit. LCC Leak Check Compound ND Analyte NOT DETECTED at or above the reporting limit MDL Method Detection Limit %REC Percent Recovery RPD Relative Percent Difference Appendix H&P Mobile Geochemistry, Inc. is approved as an Environmental Testing Laboratory and Mobile Laboratory in accordance with the DoD -ELAP Program and ISO/IEC 17025:2005 programs, accreditation number 69070 for EPA Method TO-15, H&P Method TO-15, EPA Method 8260B and H&P 8260SV. H&P is approved by the State of Arizona as an Environmental Testing Laboratory and Mobile Laboratory , certification numbers AZM758 and AZ0779. H&P is approved by the State of California as an Environmental Laboratory and Mobile Laboratory in conformance with the Environmental Laboratory Accreditation Program (ELAP) for the category of Volatile and Semi-Volatile Organic Chemistry of Hazardous Waste, certification numbers 2740, 2741, 2743, 2744, 2745, 2754 & 2930. H&P is approved by the State of Florida Department of Health under the National Environmental Laboratory Accreditation Conference (NELAC) certification number E871100. The complete list of stationary and mobile laboratory certifications along with the fields of testing (FOTs) and analyte lists are available at www.handpmg.com/about/certifications. Page 68 of 68 2470 Impala Drive, Carlsbad, CA 92010 & Field Office - Signal Hill, CA W handpmg.com E info©handpmg.com F 760.804.9159 P 760.804.9678 VAPOR I AIR Chain of Custody Sample Receipt (Lab Use Only) Lab Client and Project Information (in haki Project Location: ❑ Level IV Sampler(s): 24-Hr Rush ❑ ❑ Excel EDD • Other EDD: ❑ 3-day Rush E Mobile Lab Signature: ❑ CA Geotracker Global ID: ❑ 48-Hr Rush ❑ Other: Date: Additional Instructions to Laboratory: * Preferred VOC units (please choose one): • .tg/L k] lig/m3 ❑ ppbv ( 'II1 ti - 11if- (if applicable) n D--P Pe/LaLer-b-4-3 SAMPLE TYPE TIME 24hr clock WO Ill" t 1‘75 CONTAINER Indoor Air (IA), Ambient SIZE & TYPE Air (PA), Subslab (SS), 400mL/1L/6L Summa, Tedlar, Tube, etc. Soil Vapor (SV) Lab PM Initials: I DATE mm/dd/yy Receipt Notes/Tracking #: ..... .._e",,75.,..41 1+-JCY-1)t. ❑ ppmv FIELD POINT NAME SAMPLE NAME I (1:11/6 /11' TemP: Receipt Gauge ID: -7//7//7 11 a gil 4 ( q ( i(I .k,li 9- .0-, Outside Lab: Sampler Information Turnaround Time ❑ 5-7 day Stnd ❑ Level III ri4 -/,, iif ; 5 ") Reporting Requirements • Standard Report Sample Intact: • Yes • No • See Notes Below (- --/,'; FixedGases by ASTMD1945 CO2❑ 02❑ N2 4:- — Lab Work Order # 5,,Q.e..7 5 _,72,-. 5 ev k .' Li e ‘ /14mocirc5,7Lho,--7 -ca &c,,4,7 67 tyc bk—e ei, e)-2,,,,..- 7--fz64.77,4le Report E-lylail(s): Naphthalene 8260SV❑ TO- 15 ,(),.e.,,2 , m iti44;), Oxygenates 8260SV❑ TO-15 Lab Client City, State, Zip: e?eiyi Phone Number: _ q--5- re-e°,3 VOCs Standard Fu 8260SV❑ TO-15 OCs V Short List /Project List 8260SV❑ TO-15 Lab Client Address: H&P Project # TPHv as Gas 8260SVm ❑ TO-15m Aromatic/Alip hatic Fractions ...2 , 0 t °iv) 4 ,e /-6/ficitiA '0 '1? 'Vie itt) ta;et, t ,/ 5de ; 57/7/g/ Lab use only: ReceiptVac Lab Client Project Manager: 2. 55 (1 CONTAINER ID( ###) TP-C- Control #: Date Recd: 7A,!ii ri, Project Name / #: Lab Client/Consultant: 444 DATE: Page f of Methane by EPA 8015m Mobile Z Geochemistry, Inc. • 8260SVm ❑ TO-15m LeakCheckCompound DFA❑ IPAE He 1i :Pp x; - di- (e : 5 t, r)- ,0 'Q.4-ir ` 11' •-"l1/i4 l 64 -;--,, / ,.. i-,5-.-:4 2,,K i' ) 56P • 5;16 - -27 --b6 i X Y 1 fc ,c X x `5c ii '0'` ) If= yr C2121'1' OP - 50 5(QP• Z 13 -(0 4;Gsp4/ -; yc' u/57 frs • K • , 7)7- ..--7-0 •.\.; ❑ -. in uished : ( I at 1 i 7 J Received by: prov. elin.uished : Company: ate: Time Time. Received by: Approved/Relinquished by: Company: Date: Time: Received by: ❑ :.< ,.( :9:S ). . 0 Time:/ nrie:e ( pa..-r k-614r•-(4I'M • ‘,1 A. . C 711a riii __,..pat :--'_ . „..7 ---....." . _. -..Date: Company: Company: Date: Time: Time. e: Time: Appendix 6Al, Rev 5/23/2016, Effective ❑ ❑ *Approval constitutes as authorization to proceed th analysis and acceptance of conditions on back 2470 Impala Drive, Carlsbad, CA 92010 & Field Office - Signal Hill, CA W handpmg.com E info@handpmg.com F 760.804.9159 P 760.804.9678 Lab Client and Project Information 5/9 ild fri 5 %Pc Lab Client Project Manager: n , XY ' *441404 c-,,,, L_ A/f r 12/ z -.2,,,i i910 - , 'cir A ❑ 24-Hr Rush Sampler(s): • 3-day Rush Et Si nature: g • 48-Hr Rush Mobile Lab Date: ❑ Other: Additional Instructions to Laboratory: ppbv C • ppmv FIELD POINT NAME SAMPLE NAME ....e: .. 7/// 7/ / 7 Lab PM Initials: arrt ilartjt enfld (if applicable) DATE mm/dd/yy . 1,, 61,q(4, 4*- ..... CONTAINER SAMPLE TYPE Indoor Air (IA), Ambient SIZE & TYPE TIME Air (AA), Subslab (SS), 400mUlU6L Summa, Tedlar, Tube, etc. Soil Vapor (SV) 24hr clock INIJ:i 5v _46,,,..,,,, 4-2 • VOCs Standard Full List 8260SV ❑ TO-15 7f7-07 • e/r.SCi-1 1254 n get Oi * Preferred VOC units (please choose one): MI µg/m3 Receipt Notes/Tracking #: k---- Naphthalene 8260SV ❑ TO-15 ❑ 5-7 day Stnd Oxygenates 8260SV ❑ TO-15 • Other EDD: Temp: Outside Lab: Sampler Information VOCs Short List / Project List 8260SV ❑ TO-15 ❑ Level IV 11‘7' 0 7/771- /6 .-C-•707 0 •C '71 Receipt Gauge ID: La b use on ly: ReceiptVac ❑ Level III /767"'a. ,P, il,..9? Sample Intact: • YesNo U U See Notes Below Turnaround Time ❑ CA Geotracker Global ID: • p.g/L Lab Work Order # c0 S-- — 8 isg>/ .. Reporting Requirements • Excel EDD 4;7 ,,-- .5---• NI Standard Report C h R(91. Report E-Mail(s): Control #: ,), ,.< Fixed Gases by ASTM D1945 CO2 ❑ 02 ❑ N2 F,:4, H&P Project # Aromatic/Aliphatic Fractions 8260SVm ❑ TO-15m ii, i i4/ - h7....._ //7 c7/9/70/ CONTAINER ID ( ###) Lab Client City, State, Zip: Project Location: 7 e71-? ,-, ....— TPHv as Gas 8260SVm ❑ TO-15m VIV f al 4 Lab Client Address:/093 Phone Number: Sample Receipt (Lab Use Only) Date Redd: Project Name / #: Lab Client/Consultant: Methane by EPA8015m Geochemistry, Inc. DATE: 74-747--Page z oft VAPOR / AIR Chain of Custody LeakCheck Compound V1DFA❑ IPA❑ He 7.? Mobile .. _.....---fly ar pr e inquis . Approved/Relinquished by: k_arreil co;prrz( Company: Company: Dat l i ITime: 5-0, 0 Received by: Co Op Pate: r Time: //ii/7 _.4.1./L., ❑ by e! Time: Received by: Company: ate: Time: ❑ Ap. .Adl, elinquish ❑ I Date: Time: Received by: Company: Date: Time: Appendix 6A1, Rev 5/23/2016, Effective 5/2312016 ❑ ❑ 'Approval constitutes as authorization to proceed with analysis and acceptance of conditions on back 2470 Impala Drive, Carlsbad, CA 92010 & Field Office - Signal Hill, CA W handpmg.com E info©handpmg.com F 760.804.9159 P 760.804.9678 DATE: 7-if VAPOR / AIR Chain of Custody Page fr,e1-14 - ,;14/0 Lab Client Address: 17/..ekt) a-,z2 rk(le7. , 5 , y - ./-e- Lab PM Initials: 6 & 7-,, 5 o7- to 4 ' ''ii 'i, Ve )14.,tor ❑ ppmv d SAMPLE TYPE FIELD POINT NAME DATE (if applicable) mm/dd/yy (2P- . 4 - e 4 -2--/ - 2e ( ' - '-' ,,iP '( ---‹ 11,0) 56 C- - 6 5(7P, A-- DJA71- Si St-ii)- A - it1 /4-21- -- / 7 -7//c, / 1 —A271 17 61.A .0Calb - (637-NOe \JaL Date: Other: CONTAINER SIZE & TYPE Indoor Air (IA), Ambient TIME Air (AA), Subslab (SS), 400mUl U6L Summa, Tedlar, Tube, etc. Soil Vapor (SV) 24hr clock i- - a,`o=51 (i% 2.' qv-. ,..,/ laser' Ski 6(4,- S --i 1 -5-0 5(if ' 2 2 2) - 2 11'14 2:; (f yc X Y x K "7( x K " -- x 7' 7 7( x /' K- -1‹ 5( N< k X ?‹ >, 7c 2c 7 K. i 1, : 1;7 :7 ❑ -5 Cii " ' l'i - 5 /Ref • uish jj ',op? y: ' ccef Ack-- 631,•. Approved/Relinquished by: Approved/Relinquished by: Received by:. Company. --Igo I Date( Time: Received by: Company: Date: Time: Received by: 1 ❑ yppr 67 --) A - >c )< )( 5( • (2 r• S l'I • Tem p: ...z. .... ze;:r ocwo,„0,...--- [Methane by EPA8015m • 6I( ❑ DFA ❑ I PA ❑ He ❑ 48-Hr Rush Signature: ❑ TO-15 8260SVm ❑ TO-15m Aromatic/Aliphatic Fractions 8260SVm ❑ TO-15m SAMPLE NAME a Mobile Lab 8260SV ❑ ppbv ❑ 3-day Rush X y Comp fp i r '1 7 k7/7 ❑ ❑ Time: Company: Date: Time: Company: Date: Time: ppen x fiat, Hen *Approval constitutes as authorization to proceed with analysis and acceptance of conditions on back i 6 Receipt Notes/Tracking #: .:5‘.41 Sampler(s): g 6.-../. -- Naphthalene * Preferred VOC units (please choose one): ❑ 24-Hr Rush 8260SV ❑ TO-15 Additional Instructions to Laboratory: ❑ 5-7 day Stnd 17-e cr- ,7. fiz-7.? Outside Lab: Sampler Information Turnaround Time ❑ ❑ Other EDD: C 7072 Receipt Gauge ID: Oxygenates ❑ Level IV 2- Yes El No • See Notes Below Sample Intact: • VOCs Short ListI ProjectList 8260SV T O-15 ❑ Level III 3 a µg/m 4 Control #: -1-2.-c o,/.7/7- Lab Work Order # 5,74-- 5 ,',/ ❑ CA Geotracker Global ID: • µg/L CITel y i,' 4/47 Report E-Mail(s): List VOCs StandardFull 8260SV ❑ TO- 15 ❑ Excel EDD dr 7 5- H&P Project # .- I 2/2 --, Reporting Requirements !Pi Standard Report i „ . - Lab use only: Receipt Vac 13 9"--Lab Client City, State, Zip: c ) 44: Phone Number: i sir 7 of CO2❑ 02 ❑ N2 'fze- L7 Project Location: ises q 57/21,0/ Fixed Gases by ASTM D1945 .2„ L Lab Client Project Manager: k; h .7 Date Rec'd:Vis 7 TPHv as Gas ff-4- 7g 7 CONTAINER ID( ###) Lab Client/Consultant: Project Name / #: i Sample Receipt (Lab Use Only) Lab Client and Project Information LeakCheckCompound Mobile 7? Geochemistry, Inc. , tnecnve Lab Client and Project Information Project Name /#: .. 'T PC Cvkihqviiii Lab Client Project Manager: a s ())/ ii)). y2 S; ,,-1-, A 69 Turnaround Time Peto( , .4,yvA J- epA * Preferred VOC units (please choose one): SAMPLE TYPE FIELD POINT NAME (if applicable) SAMPLE NAME - c-,i,i- .2,')6P(AP. DATE TIME mm/dd/yy 24hr clock /3- '24- T---- 5V (,( (,l/, K 1--));• i y:1-1. S2 - ") S -52 - > >4W-73'2-s ' '; (- 2/ - - 7 --• CONTAINER SIZE & TYPE Indoor Air (IA), Ambient Air (M), Subslab (SS), 400mUl U6L Summa, Soil Vapor (SV) Tedlar, Tube, etc. La b u se on ly: Receipt Vac ill • ppmv I D (###) ❑ ppbv CONTAINER U ug/m3 Lab PM Initials: ~jlq7/./7 X 74 `i‹. Is 'Is X ).e iC y X )( i,(.5- -- A. K X K 1 ":,- - : N, Se k 7< .,X X )‹ ?S , -47,9 - V.)-- S JA' ex ❑ ii f / (--()5 .......„erz, e quis d by Ap ove e quished by: Company: Approved/Relinquished by: Company: ❑ App \/ 7 II Date: ' -- X Ii jib 1 5 Received by: Dal: Time: Received by: Company: Date: Time: Date: Time: Received by: Company: Date: Time: ir C/744r,y, 7 ttio : t ' Time: Appendix 6.41, Rev 5/232016, Effective 5123/2016 ❑ ❑ 'Approval constitutes as authorization to proceed with analysis and acceptance of conditions on back \./ CO2 0 02 O N2 V1111 Date: FixedGases by ASTM D1945 ❑ Other: Methane by EPA8015m ❑ 48-Hr Rush DFA ❑ IPA ❑ He la Mobile Lab Receipt Notes/Tracking #: 8260SVm ❑ T O- 15m ❑ 3-day Rush Sampler(s):,.- ____. 4.--"-- ' C-- 67f'-r-t•) Signature: .•,...??1,......... 0...._ Lea k CheckCompound ❑ 24-Hr Rush Aromatic/Alip hatic Fractions Additional Instructions to Laboratory: ❑ 5-7 day Stnd 8260SVm ❑ T O-15m • Other EDD: Outside Lab: Sampler Information ❑ TO-15 ❑ Level IV ❑ CA Geotracker Global ID: ❑ ug/L Temp: 5 S7 8260SV ❑ Excel EDD ❑ Level III 67--6-72 Receipt Gauge ID: - /(:::- Sample Intact: MI Yes • No • See Notes Below 7- /2 -22 Reporting Requirements ffl Standard Report /ye‘ ran 2._/0--- i p-c 67-4/ 7 - Lab Work Order # TPElv as Gas S5-5 ' .=)--0 Report E-Mail(s): Naphthalene Phone Number: H&P Project # k? Min 01111 3 lib.- (2+ Control #: -,i/ l`tt i / Oxygenates V"? Lab Client City, State, Zip: 2.1 g -5- a71.4// 5 ,c c-,i. ei,77 6/7. F 8260SV❑ TO-15 pi,. Gil Lab Client Address: Project Location: Sample Receipt (Lab Use Only) Date Rec'd:, / .;., i,, 8260SV❑ TO- 15 VOCs Short List / Project List 8260SV ❑ TO- 15 Lab Client/Consultant: DATE: A5//7Page 7, VAPOR / AIR Chain of Custody VOCs Standard Fu ll List p 2470 Impala Drive, Carlsbad, CA 92010 & Field Office - Signal Hill, CA W handpmg.com E info@handpmg.com F 760.804.9159 P 760.804.9678 Mobile Geochemistry, Inc. TT 2470 Impala Drive, Carlsbad, CA 92010 Los Angeles Field Office in Signal Hill, CA Ph: 800-834-9888 www.handpmg.com Mobile Geochemistry Inc. H&P 8260S V (Modified EPA 8260B) Analyte Dichlorodifluoromethane (F12) Chloromethane Vinyl chloride Bromomethane Chloroethane Trichlorofluoromethane (F11) 1,1-Dichloroethene 1,1,2-Trichlorotrifluoroethane (F113) Methylene chloride (Dichloromethane) Methyl tertiary-butyl ether (MTBE) trans-1,2-Dichloroethene 1,1-Dichloroethane 2,2-Dichloropropane cis-1,2-Dichloroethene Bromochloromethane Chloroform 1,1,1-Trichloroethane 1,1-Dichloropropene Carbon tetrachloride 1,2-Dichloroethane (EDC) Benzene Trichloroethene 1,2-Dichloropropane Dibromomethane Bromodichloromethane cis-1,3-Dichloropropene Toluene trans-1,3-Dichloropropene 1,1,2-Trichloroethane 1,3-Dichloropropane Tetrachloroethene Dibromochloromethane 1,2-Dibromoethane (EDB) Chlorobenzene 1,1,1,2-Tetrachloroethane Ethylbenzene m,p-Xylene o-Xylene Styrene Bromoform Isopropylbenzene (Cumene) 1,1,2,2-Tetrachloroethane n-Propylbenzene 1,2,3-Trichloropropane Bromobenzene 2-Chlorotoluene 1,3,5-Trimethylbenzene 4-Chlorotoluene CAS No. 75-71-8 74-87-3 75-01-4 74-83-9 75-00-3 75-69-4 75-35-4 76-13-1 75-09-2 1634-04-4 156-60-5 75-34-3 594-20-7 156-59-2 74-97-5 67-66-3 71-55-6 563-58-6 56-23-5 107-06-2 71-43-2 79-01-6 78-87-5 74-95-3 75-27-4 10061-01-5 108-88-3 10061-02-6 79-00-5 142-28-9 127-18-4 124-48-1 106-93-4 108-90-7 630-20-6 100-41-4 179601-23-1 95-47-6 100-42-5 75-25-2 98-82-8 79-34-5 103-65-1 96-18-4 108-86-1 95-49-8 108-67-8 106-43-4 Ultra Low RL** Vapor (µg/m 3 ) 100 100 10 100 100 100 100 100 100 100 100 100 100 100 100 20 100 100 20 20 20 20 100 100 100 100 200 100 100 100 20 100 100 20 100 100 100 100 100 100 100 100 100 100 100 100 100 100 H&P 8260SV Rev 0, 5/12/16 Oco-r7,„ (11 , 2470 Impala Drive, Carlsbad, CA 92010 Los Angeles Field Office in Signal Hill, CA Ph: 800-834-9888 www.handpmg.com Mobile Geochemistry Inc. H&P 8260SV (Modified EPA 8260B) Analyte tert-Butylbenzene 1,2,4-Trimethylbenzene sec-Butylbenzene p-Isopropyltoluene 1,3-Dichlorobenzene 1,4-Dichlorobenzene n-Butylbenzene 1,2-Dichlorobenzene 1,2-Dibromo-3-chloropropane 1,2,4-Trichlorobenzene Hexachiorobutadiene Naphthalene 1,2,3-Trichlorobenzene CAS No. 98-06-6 95-63-6 135-98-8 99-87-6 541-73-1 106-46-7 104-51-8 95-50-1 96-12-8 120-82-1 87-68-3 91-20-3 87-61-6 Ultra Low RL** Vapor (pg/m 3 ) 100 100 100 100 100 100 100 100 1000 100 100 20 100 Oxygenates Diisopropyl Ether (DIPE) Ehtyl-t-butyl Ether (ETBE) Tertiary amyl methyl ether (TAME) T-Butanol (TBA) Methyl tertiary-butyl ether (MTBE) 108-20-3 637-92-3 994-05-8 75-65-0 1634-04-4 200 200 200 1000 100 Methane by EPA 8015m Methane Leak Check Compound 1,1-Difluoroethane 10 ppmv 75-37-6 100 **NOTE: 100cc sample for Ultra Low RL. For clean samples only. H&P 8260SV Rev 0, 5/12/16 Mobile HI. Project SiteAddress: 9?75 fpgg-L-A/ (ilk/fa. [/7ng far I Consultant: Consultant Rep(s): Geochemistry Inc. 7E5 07 Log Sheet: Soil Vapor Sampling with Syringe 7- Le? ?ac- I Date: 7 .1 Page: 1 of j, Rep(sFMSOO4 Revision: 4 Revised; 3/2212017 Effective: Page 1 of 1 Scanned: TTorri?LeJ Equipment Info Purge Volume lnformati Leak Check Compound W-DFA Resampie Key Pump r; 5f and 40% tubing connections and probe sea}. This is El IPA 2 D?ljry Bent 50% done for all samples uniess otherwise noted. Other: RL {01. 5.66 Fail? Sample Information Probe Specs Purge Collection Information Shutln . Sample Probe Tubing Sand Dry Leak Purge Pump Sample ProbeVac PointlD syigge Volume Simple Depth Length 533'?) Dia Bent. Bent. 63955; Check Virgin Flow Rate Time Flow Rate El (cc) (ft) (it) Ht Die (in) (mUmin) (minzsec) (mLI'min) Elf?Su235. ag??lgz? 0 age: we . . 4 5hF127 fmI 2er 50 36656 2242.?3 Liz/?4: if). 54-4200 5; f'??ay 4 55 FL lo? 352-3-5 (.3 3.: 2.3%.5 <33ch Nae new 75Int?1.9.5 2/ 22/5 424/,? :safes/ZV? Ef?e/re {o '1 I2 2.23 I2 2?26 22 5?5; 43% {Cf14.2%? fa 252:" :2ch line :7 2 33L) l: 3-75 i/ 335M ?434-0 39 .. . - chIbe?? I0 ?ie- LL30 l0 62 /Lr IL ?4 P527 2.2 420: ?16 ?51 a .. grip2.5424:36 (4 22m L~l we? as? few 1055 Fe 377' 5? Mr? ?335?? Im *7 I2, 2.2.9 I: 2.2? 1/ Zb? 3? <30 (250 63{5:9 {>567 2. I2 2.15 23% am? Il-j?f LEI-0 {u [Hwy . 577/"2,2,4 1/ 2:1: ale-e lit/I1 Alan K) Site Notes such as weather visitors scope deviations health 8: safety Issues etc. (When making sample specific notes, reference the line number aboverngP/Inyx ?ffI fix?? 2,3 l/tx: - 5439-9": :I'L?f?g THC ,n no I'v' F-IL Mr In Ma: Ila. Mobile Geochemistry Inc. Log Sheet: Soil Vapor Sampling with Syringe FMSOO4 Revision: 4 Revised: 322/2017 Effective: 324/201? Page 1 of H&PProIect#= Date: Site Address: gy5 5/73/wa Won/,K/hu/a Ug?efc. Page: of 2 Consultant: fg/ g; [giro/i Rep(s): 76/71/ Reviewed: N5 Consultant Rep(s JOr/e? 7?71- 5, 627/56,) Scanned: 7760?? Equipment Info Purge Volume Information Leak Check Compound M1-DFA Resample Key Inline Gauge D#:726f PV Amount: 9 )lol/ PV Includes Whing Acioth piaced around PumplD#: 6736/ UPS/and 40% tubing connections andprobe seai. This is IPA RD Dry Bent 50% done foraiisampies unless otherwise noted. CIOther: FM- :foz'LCC Faii Sample Information Probe Specs Purge 8. Collection Information . Shutln . Sample Probe TubIng . Sand Dry Dry Leak Purge Pump Sample ProbeVac oin SyrInge oume sample 5an i n. en. Test ec Purge ow a ime ow a '0 T'me Dam Length Hum" l?iirt.) 0:1 Clank :lrnUarint? (mTIn:sec) 11min? 2% 1 13%? 15009920 22 ?41 /2 2.29 (2 2.25 1/2935) 62a? QM 20a2,252 225 22/5 aw MM 200 e? 3 as? 323?; I50 c9723 5' 7 ?fz 2.25 {2 1/ 2/ 236 3 e270 225 642% NM: 2w 5? 5 S??wi'wsf- 5 {50 10/5 ?5 '7 ?4 I2 2.29 2-2? 22o c240 MW 205? 6 if; [567 [we 26 27 l?a, I2 225 2.25 290; 4200 Ian 2w 5 2,9331% 5 7 ,2 2.2g {2 2-25 22/3 4250 szoc/ CV a 55p~327?~25 ?33? gal/W 25 27 l/g, I2 22922 2.25 255' 426?! aw 9 96/282472,25 I2 225 1/ 22/5 12:90 NM 260 {50 1259530 322576 42%? 22-65200 5? 247/226 I50 [327 ?5 7 '44 225 I2 .219 22/3 4200 2?00 25? 12 Si Notes such as weather visitors scope deviations health&safety Issue ,.etc (When making sample specific notes reference the lIne number above) We: I0 ?of-II" Thaif' (7/?th 9 [595 . FMSOO4 H): MOblle Revision: 4 Geochemistry Inc. Revised: 31222017 Effective: 3/24i?201 Log Sheet: Soil Vapor Sampling with Syringe page of] Project Date: 7 Site Address: (?75 Pray Wag/I (Ins/?51 Page: 2 on Consultant: TEC ga/oi? 0,45 Rep(s): T, Reviewed-? Consultant Rep(s): ?a/t 5764/2/84?" 5-5a/5c/i Scanned?m; Equipment Info Purge Volume Information Leak Check Compound Resampie Key lnline Gauge 7'2? PVAmount: 5/1/ PV Includes E??ibing Adam saturatedwirh HSzHesarnpiz-a Pump D?s/and 40% tubing connections andprobe seal. This is El IPA RD :z?nr'?iiunonl Bent 50% done feral! samples unless otherwrse noted. Other: 9L forLCC FM Sample Information Probe Specs Purge Collection Information . Shut in Point ID 32:35:: giggle 3:30;: 22:35 gag?) Fi?'i?nd') 83:: 82%. six. ages: of; Flopxriggte Fi?: Flsojvmg?e PEberigac (cc) (it) (it) on.) Hum.) DiaUn-ir (V) (mL/mln) (mUmIn) EFT-120 1 592-25" 24:0 1357 25' 27 Va {2 2.25 /2 2,25 1/ 2903? may 260 (3?2 2 55 F2352 5 (wit/22 5 7 "/22/5 42%? 200' 251 3 23522.2?? KO V755 25 Z7 (2 22S f? 2.25 25?; 2252? {25/ 26K2237;; int) mg 5 77 2.29 /2 2225? 2 22; 5 42cc Him 22.2,, d: 5 g?f_?o .- 35 525/??150 1590 2527 [/51 {2 2,25 [2 225? i/ 2503 4200 205) ,0 5 233;?; [225 22!} 4202Site Notes such as weather, visitors, scope deviations, health 8. safety issues. etc. (When making sample specific notes, reference the line number above): Petroleum Services Division 3437 Landco Dr. Bakers?eld. California 93308 Tel: 661-325-5657 Fax: 661 ?325-5808 ENE Ldi mvwcorelabcom IISIIVEIR mm July 27, 2017 Brian Kettmann TRC Solutions, Inc. 4393 Viewridge Ave. Suite A San Diego, CA 92123 Subject: Vapor Transport/Johnson-Ettinger CL File No: 1702692 Dear Mr. Kettmann: The attached file presents the final results for requested tests on the two soil samples submitted from your Project Appropriate ASTM, EPA or methodologies were used for this project and are available on request. The samples for this project are currently in storage and will be retained for thirty days past completion of testing at no charge. At the end of thirty days, the samples will be disposed. You may contact me regarding continued storage, disoposal. or return of the samples. Thank you for this opportunity to be of service to TRC Solutions, inc. Please do not hesitate to contact us at (661?325?5657) if you have any questions regarding these results or if we can be of any additional service. Sincerely, Core Laboratories WW Grinstead Core Analyst The analyses. opinions or interpretations contained in this report are based upon observations and material supplied by the client for whose exclusive and con?dential use this report has been made. The interpretations or opinions expressed represent the bestjudgrnent of Core Laboratories. Core Laboratories assumes no responsibility and makes no warranty or representations, expressed or implied. as to the productivity. proper operations or pro?tableness. however. of any oil, gas. coal or other mineral. property. well or sand in connection with which such report is used or relied upon for any reason whatsoever. as NYSE Physical Properties Data Petroleum Services TRC Solutions, Inc. Core Lab File No: 1702692EN Project Name : Otay Village Ranch III Project Number : 280845/PH01 API RP40 METHODS: ASTM D5550 API RP 40 ASTM D425M API RP 40 Porosity 2 100 psi Net Confining Stress Total Water Filled Effective 3 Permeability to Air millidarcy cm3/cm3 cm3/cm3 Sample ID. Depth ft. Sample Date Sample 1 Orientation Density Dry Bulk g/cm3 Lot No. 129 3.5 07/13/17 V 1.62 0.39 0.21 47.78 SGP-06 3.5 06/07/17 V 1.62 0.39 0.31 1.79 (1) Sample Orientation: H = horizontal; V = vertical. (2) Total Porosity = no pore fluids in place; all interconnected pore channels; Water Filled = native, as received pore fluids (3) Native State or Effective = With as-received pore fluids in place. ATTERBERG LIMITS AND SOIL CLASSIFICATION DATA PETROLEUM SERVICES TRC Solutions, Inc. Core Lab File No: 1702692EN Project Name : Otay Village Ranch III Project Number : 280845/PH01 ASTM D4318 METHODS: Atterberg Limits 1 Liquid Limit Plastic Limit Plasticity Index LL PL PI ASTM D4318 ASTM D2487 USDA USCS / Plasticity Chart Symbol (Fines: <#40 Sieve) USCS Classification Group Symbol: Name USDA/SCS 2 Soil Texture Scheme Sample ID Depth, ft. Lot No. 129 3.5 37 17 20 CL Lean Clay with Sand Loamy Sand SGP-06 3.5 44 21 23 CL Lean Clay with Sand Sandy Loam USCS: Unified Soil Classification System USDA: US Department of Agriculture SCS: Soil Conservation Service (1) Silt assumed as fine fraction for NON-PLASTIC (NP) samples. (2) Sand considered to be >No. 200 sieve for USDA SOIL TEXTURE SCHEME. SIEVE and LASER PARTICLE SIZE SUMMARY (METHODOLOGY: ASTM D422/D4464M) Petroleum Services Company: TRC Solutions, Inc. CL File Number: 1702692EN Date: 7/24/2017 Project Name: Otay Village Ranch III Location: Chula Vista, CA Sample ID Grain Size Description (Mean from Folk) Median Grain Size, mm Component Percentages Sand Size Coarse Medium Fine VFine Gravel VCoarse Lot No. 129 mgr 0.6225 20.35 18.11 15.67 11.02 7.84 SGP-06 mgr 0.6296 17.09 22.30 14.40 8.41 6.20 Silt Clay Silt & Clay 6.58 14.76 5.67 20.4 6.81 18.27 6.51 24.8 Company: TRC Solutions, Inc. Project Name: Otay Village Ranch III Location: Chula Vista, CA CL File Number: 1702692EN Sample ID: Lot No. 129 635 500 450 400 325 270 230 200 170 140 120 100 80 70 60 50 45 40 35 30 25 20 18 16 14 12 10 8 7 6 100.0 4.5 75.0 3.0 50.0 1.5 25.0 0.0 4.00000 1.00000 0.25000 0.06250 0.01562 0.00391 Cumulative Weight, % Frequency, % 6.0 5 Sieve and Laser Particle Size Analysis 0.0 0.00098 Diameter, mm Particle Size Distribution Diameter Granule V Crse Sand Coarse Sand Medium Sand Fine Sand V. Fine Sand Silt Clay [US Mesh] 5 6 7 8 10 12 14 16 18 20 25 30 35 40 45 50 60 70 80 100 120 140 170 200 230 270 325 400 450 500 635 [in.] 0.157480 0.132425 0.111355 0.093638 0.078740 0.066212 0.055678 0.046819 0.039370 0.033106 0.027839 0.023410 0.019685 0.016553 0.013919 0.011705 0.009843 0.008277 0.006960 0.005852 0.004921 0.004138 0.003480 0.002926 0.002461 0.002069 0.001740 0.001463 0.001230 0.001035 0.000870 0.000732 0.000615 0.000517 0.000435 0.000366 0.000308 0.000259 0.000217 0.000183 0.000154 0.000129 0.000109 0.000091 0.000077 0.000065 0.000054 0.000046 0.000038 0.000032 0.000027 0.000023 0.000019 0.000016 0.000015 [mm] 4.00000 3.36359 2.82843 2.37841 2.00000 1.68179 1.41421 1.18921 1.00000 0.84090 0.70711 0.59460 0.50000 0.42045 0.35355 0.29730 0.25000 0.21022 0.17678 0.14865 0.12500 0.10511 0.08839 0.07433 0.06250 0.05256 0.04419 0.03716 0.03125 0.02628 0.02210 0.01858 0.01562 0.01314 0.01105 0.00929 0.00781 0.00657 0.00552 0.00465 0.00391 0.00328 0.00276 0.00232 0.00195 0.00164 0.00138 0.00116 0.00098 0.00082 0.00069 0.00058 0.00049 0.00041 0.00038  -2.00 -1.75 -1.50 -1.25 -1.00 -0.75 -0.50 -0.25 0.00 0.25 0.50 0.75 1.00 1.25 1.50 1.75 2.00 2.25 2.50 2.75 3.00 3.25 3.50 3.75 4.00 4.25 4.50 4.75 5.00 5.25 5.50 5.75 6.00 6.25 6.50 6.75 7.00 7.25 7.50 7.75 8.00 8.25 8.50 8.75 9.00 9.25 9.50 9.75 10.00 10.25 10.50 10.75 11.00 11.25 11.50 Weight % [Incl.] 3.227 3.248 4.326 5.405 4.143 3.667 4.334 4.971 5.143 4.769 4.104 3.542 3.257 3.093 2.880 2.635 2.413 2.181 1.939 1.833 1.885 1.907 1.774 1.550 1.344 1.198 1.106 1.054 1.022 0.977 0.919 0.893 0.913 0.932 0.894 0.838 0.801 0.789 0.793 0.807 0.822 0.816 0.784 0.726 0.649 0.563 0.479 0.405 0.341 0.286 0.234 0.181 0.127 0.068 0.017 [Cum.] 3.23 6.47 10.80 16.21 20.35 24.02 28.35 33.32 38.46 43.23 47.34 50.88 54.13 57.23 60.11 62.74 65.16 67.34 69.28 71.11 72.99 74.90 76.67 78.22 79.57 80.77 81.87 82.93 83.95 84.92 85.84 86.74 87.65 88.58 89.47 90.31 91.11 91.90 92.70 93.50 94.33 95.14 95.93 96.65 97.30 97.86 98.34 98.75 99.09 99.37 99.61 99.79 99.92 99.98 100.00 Parameter Sorting Statistics (Folk) Trask Inman Median Folk Coarse sand sized (in) 0.0245 0.0245 0.0245 (mm) 0.6225 0.6225 0.6225 Mean Medium sand sized (in) 0.0340 0.0107 0.0141 (mm) 0.8626 0.2724 0.3588 Sorting V. Poor 3.945 Skewness 3.136 3.094 Strongly fine skewed 0.660 Kurtosis 0.792 0.437 Mesokurtic 0.260 0.606 Gravel Component Percentages Sand Silt Clay 20.35 59.22 1.042 Silt + Clay 14.76 5.67 21.78 Percentile [Weight, %] [in.] Particle Diameter [mm] [phi] 5 0.1438 3.6525 -1.8689 10 0.1153 2.9275 -1.5497 16 0.0943 2.3956 -1.2604 25 0.0638 1.6210 -0.6969 40 0.0374 0.9487 0.0759 50 0.0245 0.6225 0.6839 75 0.0041 0.1042 3.2630 84 0.0012 0.0310 5.0124 90 0.0004 0.0099 6.6516 95 0.0001 0.0034 8.2035 ** Distribution pattern precludes calculation of these statistical parameters. Company: TRC Solutions, Inc. Project Name: Otay Village Ranch III Location: Chula Vista, CA CL File Number: 1702692EN Sample ID: SGP-06 635 500 450 400 325 270 230 200 170 140 120 100 80 70 60 50 45 40 35 30 25 20 18 16 14 12 10 8 7 6 100.0 4.5 75.0 3.0 50.0 1.5 25.0 0.0 4.00000 1.00000 0.25000 0.06250 0.01562 0.00391 Cumulative Weight, % Frequency, % 6.0 5 Sieve and Laser Particle Size Analysis 0.0 0.00098 Diameter, mm Particle Size Distribution Diameter Granule V Crse Sand Coarse Sand Medium Sand Fine Sand V. Fine Sand Silt Clay [US Mesh] 5 6 7 8 10 12 14 16 18 20 25 30 35 40 45 50 60 70 80 100 120 140 170 200 230 270 325 400 450 500 635 [in.] 0.157480 0.132425 0.111355 0.093638 0.078740 0.066212 0.055678 0.046819 0.039370 0.033106 0.027839 0.023410 0.019685 0.016553 0.013919 0.011705 0.009843 0.008277 0.006960 0.005852 0.004921 0.004138 0.003480 0.002926 0.002461 0.002069 0.001740 0.001463 0.001230 0.001035 0.000870 0.000732 0.000615 0.000517 0.000435 0.000366 0.000308 0.000259 0.000217 0.000183 0.000154 0.000129 0.000109 0.000091 0.000077 0.000065 0.000054 0.000046 0.000038 0.000032 0.000027 0.000023 0.000019 0.000016 0.000015 [mm] 4.00000 3.36359 2.82843 2.37841 2.00000 1.68179 1.41421 1.18921 1.00000 0.84090 0.70711 0.59460 0.50000 0.42045 0.35355 0.29730 0.25000 0.21022 0.17678 0.14865 0.12500 0.10511 0.08839 0.07433 0.06250 0.05256 0.04419 0.03716 0.03125 0.02628 0.02210 0.01858 0.01562 0.01314 0.01105 0.00929 0.00781 0.00657 0.00552 0.00465 0.00391 0.00328 0.00276 0.00232 0.00195 0.00164 0.00138 0.00116 0.00098 0.00082 0.00069 0.00058 0.00049 0.00041 0.00038  -2.00 -1.75 -1.50 -1.25 -1.00 -0.75 -0.50 -0.25 0.00 0.25 0.50 0.75 1.00 1.25 1.50 1.75 2.00 2.25 2.50 2.75 3.00 3.25 3.50 3.75 4.00 4.25 4.50 4.75 5.00 5.25 5.50 5.75 6.00 6.25 6.50 6.75 7.00 7.25 7.50 7.75 8.00 8.25 8.50 8.75 9.00 9.25 9.50 9.75 10.00 10.25 10.50 10.75 11.00 11.25 11.50 Weight % [Incl.] 3.807 2.714 3.097 3.481 3.988 5.239 5.937 5.893 5.233 4.508 3.855 3.262 2.778 2.447 2.194 1.981 1.789 1.598 1.447 1.478 1.679 1.846 1.823 1.657 1.486 1.374 1.318 1.280 1.246 1.197 1.141 1.120 1.142 1.152 1.103 1.041 1.008 1.005 1.023 1.048 1.071 1.061 1.011 0.923 0.807 0.676 0.547 0.429 0.331 0.253 0.190 0.137 0.091 0.047 0.012 [Cum.] 3.81 6.52 9.62 13.10 17.09 22.33 28.26 34.16 39.39 43.90 47.75 51.01 53.79 56.24 58.43 60.41 62.20 63.80 65.25 66.73 68.41 70.25 72.07 73.73 75.22 76.59 77.91 79.19 80.44 81.63 82.77 83.89 85.03 86.19 87.29 88.33 89.34 90.34 91.37 92.41 93.49 94.55 95.56 96.48 97.29 97.96 98.51 98.94 99.27 99.52 99.71 99.85 99.94 99.99 100.00 Parameter Sorting Statistics (Folk) Trask Inman Median Folk Coarse sand sized (in) 0.0248 0.0248 0.0248 (mm) 0.6296 0.6296 0.6296 Mean Medium sand sized (in) 0.0320 0.0077 0.0114 (mm) 0.8128 0.1962 0.2894 Sorting V. Poor 4.930 Skewness 3.422 3.264 Strongly fine skewed 0.503 Kurtosis 0.749 0.496 Mesokurtic 0.270 0.498 Gravel Component Percentages Sand Silt Clay 17.09 58.13 0.913 Silt + Clay 18.27 6.51 26.27 Percentile [Weight, %] [in.] Particle Diameter [mm] [phi] 5 0.1465 3.7203 -1.8954 10 0.1094 2.7792 -1.4747 16 0.0828 2.1032 -1.0726 25 0.0615 1.5613 -0.6428 40 0.0385 0.9785 0.0314 50 0.0248 0.6296 0.6675 75 0.0025 0.0642 3.9606 84 0.0007 0.0183 5.7717 90 0.0003 0.0070 7.1597 95 0.0001 0.0031 8.3568 ** Distribution pattern precludes calculation of these statistical parameters. CHAIN OF CUSTODY RECORD Cut 170 2/012. . ANALYSIS REQUEST SOlth . SOIL FLUID Address Turnaround Time 4393 \(iewridge Ave. Suite A 555 24 HR San Diego. CA 92123 A 43 HR Project Manager Phone 3 72 HR - Brian Kettmann 858 505 8881 X14910 no 5 Day Project Name Fax a 5 01' 5 'g Normal Otay Village Ranch Ill 858-505-9515 Bid No. Prejeot No. Email a: ?2 l5 0?7) g? "5 a, bkettmann@trosolutions.com Site Location File No. Otay Village Ranch Chula VistaSampler Signature 3 in. g. at, a [g 019 ?53Comments Sample ID Date Time Depth(.93 Lot No. 129 7/13i2017 1500 3.5 1 See attached analysis SGP-OB 0845 3.5 1 See attached analysis By: 234m 2. Relinquished By: 2. Received By: $6 mama ?lunar" C?eg'i?any Company Company Company -- 6W Da Time Date Time Date Time Date Time '7ltl /i7 560 7?20?17 CORE LABORATORIES 3437 Landco Dr. - Bakersfield, CA 93308 I Phone 661?325?5657 0 Fax 661-325-5808 kkx'x 8:23:29 Service Description Method :2232: AA02050 Air Permeability - Effective: Native?state permeability with as-received ?uids intact API RP40 M05020 USCS Soil Type: Includes USDA Classification. Requires Grain Size and Atterberg Limits ASTM D2487 AA05130 Particle (Grain Size: Laser method; 2mm to <1 micron (crs sand through clay fractions). ASTM D4484 M05010 Atterberg Limits: 3 point dry method; includes LL and PL ASTM D4318 M05050 Density Bulk: Dry unit weight ASTM D2937 M02000 Porosity Total: Measured pore volume with pore ?uids removed (Boyle's Law) API RP40 M02020 Porosity Water Filled: Calculated at conditions. Included with Total Porosity API RP4D M07040 Disposal: non-contaminated bag or sleeve samples Per regs M08010 Electronic Data Deliverables: Data transfer via Internet nla Yes means to conduct the analysis This page intentionally left blank Site Assessment and Human Health Vapor Risk Assessment Report  Otay Ranch Village 3, Heritage Road, Chula Vista, CA  August 17, 2017                      APPENDIX D  HUMAN HEALTH VAPOR RISK ASSESSMENT     This page intentionally left blank APPENDIX D  Human Health Vapor Risk Assessment    Table of Contents    1.0  INTRODUCTION ................................................................................................................................. 1  2.0  DATA EVALUATION ........................................................................................................................... 1  3.0  EXPOSURE ASSESSMENT ................................................................................................................... 2  3.1  Potential Receptors and Exposure Pathways ............................................................................... 2  3.2  Indoor Air Concentrations ............................................................................................................. 2  3.3  Ambient Air Concentrations ......................................................................................................... 4  3.4  Exposure Parameters .................................................................................................................... 5  3.5  Intake Estimate ............................................................................................................................. 6  4.0  TOXICITY ASSESSMENT ..................................................................................................................... 7  4.1   Noncarcinogenic Health Effects .................................................................................................... 8  4.2   Carcinogenic Health Effects .......................................................................................................... 8  5.0  RISK CHARACTERIZATION .................................................................................................................. 8  5.1   Noncarcinogenic Health Effects .................................................................................................... 8  5.2   Carcinogenic Health Effects ........................................................................................................ 10  5.3   Uncertainties ............................................................................................................................... 11  6.0  REFERENCES .................................................................................................................................... 12    Tables    1  Soil Vapor Analytical Results  2  Summary of Johnson and Ettinger Model Assumptions  3  Calculated Indoor Air Concentrations  4  Calculation of Ambient Air Concentrations  5  Air Dispersion Factor (X/Q)  6  Inhalation of VOCs in Indoor Air from Soil Vapor ‐ Noncancer Hazards   7  Inhalation of VOCs in Indoor Air from Soil Vapor ‐ Excess Cancer Risk   8  Inhalation of VOCs in Ambient Air from Soil Vapor       Attachments    A  Johnson and Ettinger Models        i Acronyms    1×10‐6    one in one‐million  one in ten thousand  1×10‐4    3 μg/m     micrograms per cubic meter  AAC    average air concentration  AF    attenuation factor  ASTM    American Society for Testing and Materials  ATC    cancer averaging time  ATNC    noncancer averaging time   ATSDR    Agency for Toxic Substances Disease Registry  bgs    below ground surface  Cair    concentration in indoor air    concentration in indoor air  Csv  CalEPA    California Environmental Protection Agency  COPCs    chemicals of potential concern  CSM    Conceptual Site Model  days/year  days per year  DTSC    Department of Toxic Substances Control  EC    exposure concentration  ECC    exposure concentration ‐ cancer   ECM    exposure concentration ‐ mutagenic  ECNC    exposure concentration ‐ noncancer     adult exposure duration   EDa  EDa_16‐30 adult exposure duration from 16 to 30 years old  EDc    child exposure duration  EDc_0‐2    child exposure duration from 0 to 2 years old  child exposure duration from 2 to 16 years old  EDc_2‐16    EF    exposure frequency  ET    exposure time  HEAST    health effects assessment summary tables  HHRA    human health risk assessment  HI    hazard index  hr/day    hours per day  HQ    hazard quotient  IRIS    Integrated Risk Information System  IUR    inhalation unit risk factor  J&E    Johnson and Ettinger  LAC    lifetime air concentration  MRLs    minimal risk levels   OEHHA   Office of Environmental Health Hazard Assessment  PPRTVs  provisional peer reviewed toxicity values  RELs    reference exposure levels  RfC    reference concentration  site    GBF / Pittsburg Landfill  TCE    trichloroethene  UCL    upper confidence limit  USEPA    United States Environmental Protection Agency  VOCs    volatile organic compounds  ii   1.0 INTRODUCTION    This  Human  Health  Vapor  Risk  Evaluation  (Vapor  HHRA)  has  been  prepared  by  TRC  to  provide  a  quantitative assessment of the potential for adverse human health effects that may result from exposure  to chemicals of potential concern (COPCs) detected in soil vapor at select locations at the Otay Ranch  residential development in Chula Vista, California (site).     This Vapor HHRA was performed in accordance with California Environmental Protection Agency (CalEPA)  and  United  States  Environmental  Protection  Agency  (USEPA)  guidance  set  forth  in  the  following  documents and models:        Guidance for the Evaluation and Mitigation of Subsurface Vapor Intrusion to Indoor Air (Vapor  Intrusion Guidance) (Department of Toxic Substances Control [DTSC], 2011);  Human Health Risk Assessment Note 1: Recommended DTSC Default Exposure Factors for Use in  Risk Assessment at California Hazardous Waste Sites and Permitted Facilities (DTSC, 2014);  Johnson and Ettinger (J&E) Model (1991), made available in spreadsheet format by the USEPA  (2004) and adopted and republished by the DTSC (updated December 2014);  Risk Assessment Guidance for Superfund: Volume I—Human Health Evaluation Manual (Part A)  (USEPA, 1989);   User’s Guide for Evaluating Subsurface Vapor Intrusion Into Buildings, Office of Emergency and  Remedial Response (USEPA, 2004); and  Risk Assessment Guidance for Superfund: Volume I—Human Health Evaluation Manual (Part F,  Supplemental Guidance for Inhalation Risk Assessment) (USEPA, 2009).  The Vapor HHRA is organized into the following sections:        Section 2.0, Data Evaluation – summarizes the available data in soil vapor; presents the Vapor  HHRA dataset; and identifies and describes the selection of COPCs.  Section 3.0, Exposure Assessment – identifies the potentially exposed populations and potentially  complete exposure pathways; describes the approach and presents the equations for developing  indoor air concentrations; and presents exposure equations and parameters.   Section  4.0,  Toxicity  Assessment  –  identifies  the  sources  of  the  toxicity  values  and  describes  noncarcinogenic and carcinogenic toxicity criteria.  Section 5.0, Risk Characterization – describes the process for estimating noncancer hazard and  cancer risk and the evaluation of uncertainty.  Section 6.0, Conclusions – presents the conclusions of the Vapor HHRA.  Section 7.0, References – provides references used in the document.    DATA EVALUATION  2.0   In June and July 2017, 99 soil gas samples, including replicate samples, were collected from 78 soil gas  probes at depths ranging from 5 to 32 fbg and were analyzed for VOCs using USEPA method 8260B.  All  1 VOCs detected in soil gas were considered COPCs in this Vapor HHRA.  VOCs that were not detected in  any  of  the  samples  collected  during  the  investigation  were  not  identified  as  COPCs  requiring  further  evaluation in the HHRA. The dataset for this sampling event is presented Table 1.    Methane was also detected in soil vapor.  The two primary health concerns associated with methane gas  are  asphyxiation  and  explosions.    Methane  poses  an  asphyxiation  hazard  only  if  vapors  accumulate  in  confined  spaces  and  displace  oxygen.    Methane  can  also  present  a  fire  or  explosion  hazard  if  concentrations exceed the lower explosive limit (LEL), which is the concentration at which the gas can  ignite, burn, or explode.  At concentrations above the upper explosive limit (UEL), the gas has displaced  enough oxygen that the ignition potential is no longer present.  The LEL and UEL for methane gas is 5 and  15 % by volume (%v), respectively, in the presence of atmospheric levels of oxygen (approximately 20 %v).   As such, fire or explosive conditions are generally not possible within the subsurface soil since oxygen  concentrations  are  below  atmospheric  levels  and  the  soil  cannot  heat  up  sufficiently  to  support  combustion.  However, methane gas may accumulate in subsurface structures with adequate levels of  oxygen, such as utility vaults and corridors.  Methane gas is rapidly diluted as it exits soil vapor into the  atmosphere so the risk of fire or explosion is unlikely to occur outdoors.  Methane is evaluated in this  report as due to the concern for an explosive environment. Since methane does not have available toxicity  criteria, it was not evaluated for noncancer hazards or  cancer risks like  the other COPCs in this Vapor  HHRA.  Instead, methane will be evaluated based on relevant risk screening values.     3.0 EXPOSURE ASSESSMENT    Exposure assessment involves the identification of the potential human exposure pathways for current  and  future  land  uses  on‐  and  off‐site.  The  identification  of  potential  human  receptors  is  based  on  the  characteristics  of  the  Site,  which  include  residential  and  commercial  use.  This  section  describes  the  potential  receptors  and  exposure  pathways  selected  for  quantitative  risk  characterization,  exposure  assumptions (or factors), equations used to estimate dose for the selected receptors, and methods used  to derive indoor air concentrations.  3.1  Potential Receptors and Exposure Pathways    The anticipated future land uses for the Site areas considered in this HHRA are residential and commercial.  Because  COPCs  have  been  detected  in  soil  gas,  potentially  complete  pathways  are  present  for  vapor  emissions emanating from the subsurface.      3.2  Indoor Air Concentrations    Residential and commercial receptors on‐site could be exposed to VOCs that may infiltrate the indoor  environment  from  the  subsurface.  Analytical  results  from  soil  vapor  were  used  to  estimate  the  volatilization from the subsurface to indoor air in this Vapor HHRA using the attenuation factors calculated  using the Johnson and Ettinger (J&E) model (1991), made available in spreadsheet format by the USEPA  (2004) and adopted and republished by the DTSC (updated December 2014).    The J&E model incorporates both convective and diffusive mechanisms for estimating the transport of  chemical  vapors  emanating  from  the  subsurface  into  indoor  spaces  located  directly  above  or  in  close  2 proximity to a source of chemicals. The model is a one‐dimensional analytical solution to convective and  diffusive vapor transport into indoor spaces. The model provides estimated attenuation factors that can  be used to relate vapor concentrations in the indoor space to vapor concentrations at the source. The  DTSC  J&E  screening  level  model  for  soil  vapor  spreadsheets  (updated  December  2014)  were  used  to  estimate  chemical‐and  depth‐specific  attenuation  factors  for  the  VOCs  detected  in  soil  vapor  for  residential receptors at the following depth intervals: 5, 10, 15, 20, and 30 feet below grade (fbg).   Inputs to the J&E model spreadsheets used for this assessment include chemical properties, future site  properties, and structural properties of residential and commercial buildings. The J&E model spreadsheets  were only used to estimate chemical‐ and depth‐specific attenuation factors which were then used to  predict potential indoor air concentrations. Default structural properties for buildings were incorporated  into the model spreadsheets. Site‐specific dry bulk density, total porosity, and water‐filled porosity were  used in the model for loamy sand.    Chemical‐ and depth‐specific attenuation factors were estimated for each approximate soil vapor depth  sampled (5, 10, 15, 20, and 30 fbg). Attenuation factors calculated for soil vapor samples were applied as  follows:       5 fbg applied to samples collected at 5.0‐9.5 fbg,  10 fbg applied to samples collected at 10‐14.5 fbg,  15 fbg applied to samples collected at 15.0‐19.5 fbg,  20 fbg applied to samples collected at 20‐29.5 fbg, and  30 fbg applied to samples collected at 30‐32 fbg.  All input parameters provided to the soil vapor J&E models are presented in Table 2. The J&E models are  provided  in  Attachment  A.  The  analytical  results  for  the  site‐specific  soil  parameters  are  provided  in  Appendix C of the main text.  The attenuation factor represents the ratio between indoor air and soil gas concentration. The predicted  potential indoor air concentrations were calculated using the following equation:  Cair  Csv  AF   where:      Cair  Csv  AF  =  =  =  Concentration in indoor air (micrograms per cubic meter [μg/m3]);  Concentration in soil vapor (μg/m3); and  Attenuation factor (unitless).  The indoor air concentrations and attenuation factors are presented in Table 3 for this Vapor HHRA. The  indoor air concentrations presented in Table 3 represents the exposure point concentrations for the Vapor  HHRA, which evaluates the noncancer hazards and cancer risks on a sample‐by‐sample basis.     3 3.3  Ambient Air Concentrations    To  address  the  soil  vapor‐to‐air  pathway  for  residential  and  commercial  receptors,  the  maximum  soil  vapor concentrations from the shallowest depth were used to estimate ambient air concentrations. A flux  model was used to estimate vapor flux to ambient air from unsaturated soil, and an air dispersion model  was used to estimate ambient air concentrations from subsurface vapor flux. The first element involves  predicting the rate of vapor flux from unsaturated soil to ground surface. The second element involves  the  calculation  of  an  air  dispersion  model  to  convert  the  vapor  flux  rate  to  an  average  ambient  air  concentration. For this assessment, the vapor flux model presented in Section 6, Figure 6‐2 of the DEH  SAM Manual (County of San Diego, 2011) was used to estimate vapor flux of chemicals from soil vapor to  ambient air as follows and calculated in Table 4:  Emission Rate   Ei  Csv  Da  CFmg / ug  CFm 2 / cm 2 Ls     Effective Diffusivity   Da  Di  Pa 3.33   Pt 2 where:  = Emission rate (milligrams per meter squared per second [mg/m2‐sec]);  = Concentration in soil vapor (micrograms per cubic centimeter (μg/cm3]);  = Chemical‐specific effective diffusivity in soil (centimeter squared per second  [cm2/sec]);   CFmg/μm = Conversion factor from micrograms to milligrams (milligrams per  micrograms [mg/μg]);  CFcm2/m2 = Conversion factor from square meters to square centimeters (centimeter squared per       meter squared [cm2/m2]);  Ls  = sampling depth below grade (meter);  Di  = chemical‐specific diffusivity in air (cm2/sec);  Pa   = air‐filled porosity (unitless); and  Pt   = total soil porosity (unitless).  Ei  Csv  Da  Ambient  air  concentrations  of  volatile  chemicals  of  potential  concern  (COPCs)  volatilizing  from  the  subsurface  were  estimated  based  on  the  emission  rate  from  the  VOC  emission  model  and  potential  dispersion in ambient air. In USEPA’s “Supplemental Guidance for Developing Soil Screening for Superfund  Sites” (2002), there is a log‐linear relationship between the inverse of the dispersion factor (Q/C; g/m2‐ sec  per  kg/m3)  and  the  area  of  the  emission  source  (As  =  9  acres  for  commercial  and  90  acres  for  residential) defined as:  4   Q / C  11.91  exp LnAs  18.44  209.78   2 This equation is based on specific measurements in Los Angeles, California, which is appropriate to the  subject site and presented in Table 5. The inverse dispersion factor (Q/C) is related to the dispersion factor  as follows (X/Q; mg/m3 per mg/m2‐sec) and calculated in Table 5:  X /Q  CFmg / kg Q / C  CFmg / g   where:  CFmg/kg  = Conversion factor from kilograms to milligrams (milligrams per kilogram [mg/kg]); and  CFmg/g  = Conversion factor from grams to milligrams (milligrams per gram [mg/g]).  The concentration in ambient air was then estimated as follows and calculated in Table 4:  Caa  Ei  X / Q   where:  Caa  Ei  X/Q  = Concentration in ambient air (milligrams per cubic meter [mg/m3]);  = Emission rate (mg/m2‐sec); and  = Dispersion factor (mg/m3 per mg/m2‐sec).  3.4  Exposure Parameters    Exposure parameters are quantitative estimates of the frequency, duration, and magnitude of exposure  to various media based on information contained in DTSC and USEPA guidance documents. The exposure  parameters are further discussed below.  The exposure time and exposure frequency for the residential receptors are based on an exposure time  of 24 hours per day (hr/day) for an exposure frequency of 350 days per year (days/year) and commercial  receptors for an 8 hr/day for 250 days/year (DTSC, 2014).   The exposure duration for a residential receptor for assessing potential cancer risk is 26 years, which is  further broken down with a child residential receptor exposure duration being six years and for an adult  being 20 years (DTSC, 2014). The exposure duration for a commercial receptor is 25 years (DTSC, 2014).  The averaging time parameter averages exposure over a period of time. For noncarcinogenic effects, the  averaging time for a residential receptor is based on the child exposure duration of 6 years of childhood  because the Hazard Index (HI) for the child will not be exceeded by the HI for any other age (DTSC, 2011).   The 6 years is multiplied by 365 days/year and 24 hr/day for 52,560 hours and for a commercial receptor  is based on the exposure duration of 25 years multiplied by 365 days/year and 24 hr/day for 73,000 hours.  The averaging time for carcinogenic effects is based on a lifetime exposure of 70 years multiplied by 365  days per year and 24 hours a day for 613,200 hours.  5 3.5  Intake Estimate    USEPA and DTSC recommended procedures and exposure assumptions were used to estimate the daily  exposure concentration (EC) or average daily dose for each COPC in indoor air in the Vapor HHRA. An EC  represents  an  estimate  of  a  chemical  dose  that  a  receptor  might  receive  on  a  daily  basis.  For  noncarcinogenic effects, the EC is averaged over the period of exposure and is referred to as the average  air concentration (AAC). For carcinogenic effects, the EC is averaged over a lifetime and is referred to as  the lifetime air concentration (LAC).  EC was calculated for each COPC in the indoor air pathway. EC is  defined as the average intake of chemical by the body per day. For noncarcinogenic effects, the EC was  calculated according to the following equation:    EC NC  where:    ECNC    Cair    ET    EF    EDc    ATNC  C air  ET  EF  EDc   ATNC = Exposure concentration ‐ noncancer (μg/m3);  = Concentration in indoor air (μg/m3);  = Exposure time (hour per day [hr/day]);  = Exposure frequency (days/year);  = Child exposure duration (years); and  = Noncancer averaging time (hours).  For carcinogenic effects, the EC was calculated according to the following equation:    EC C  C air  ET  EF  EDc  EDa    ATC where:  ECC  Cair  ET  EF  EDc  EDa  ATC  = Exposure concentration ‐ cancer (μg/m3);  = Concentration in indoor air (μg/m3);  = Exposure time (hr/day);  = Exposure frequency (days/year);  = Child exposure duration (years);  = Adult exposure duration (years); and  = Cancer averaging time (hours).  For mutagenic effects, the cancer EC was calculated according to the following equation:    EC M  C air  ET  EF  EDc _ 0 2  10  EDc _ 216  3  EDa _ 1630  1 ATC   where:  ECM  = Exposure concentration ‐ mutagenic (μg/m3);  6   Cair  = Concentration in indoor air (μg/m3);  ET  = Exposure time (hr/day);  EF  = Exposure frequency (days/year);  EDc_0‐2  = Child exposure duration from birth to two years old (years);  EDc_2‐16  = Child exposure duration from 2 to 16 years old (years);  EDa16‐30  = Adult exposure duration from 16 to 30 years old (years); and  = Cancer averaging time (hours).  ATC  A summary of the exposure assumptions are provided in Tables 6 through 8.  4.0 TOXICITY ASSESSMENT    The purpose of the toxicity assessment is two‐fold (USEPA, 1989):    Hazard Identification evaluates available information regarding the potential for a chemical to  cause adverse health effects in exposed individuals (hazard identification); and  Dose‐Response Assessment estimates the relationship between the extent of exposure and the  increased likelihood (e.g., probability or chance) and/or severity of adverse effects.  Hazard identification entails determining if a chemical can cause an increase in a particular adverse effect  (e.g.,  cancer)  and  the  likelihood  that  the  adverse  effect  will  occur  in  humans.  The  result  of  hazard  identification is a profile of the available toxicological information and its relevance to human exposure  under conditions present at in the environment. This process has been completed by either the USEPA or  Office of Environmental Health Hazard Assessment (OEHHA) at CalEPA for all of the selected COPCs in on‐ site soil vapor.  Dose‐response assessment entails quantifying the relationship between the dose of a chemical and the  incidence of adverse effects in the exposed population. The result of the dose‐response assessment is  toxicity  criteria  that  are  used  in  the  risk  characterization  to  estimate  the  likelihood  of  adverse  effects  occurring in humans at different exposure levels. The toxicity criteria used to evaluate noncarcinogenic  health risks are commonly referred to as reference concentrations (RfCs) for inhalation exposures. For  carcinogenic health risks, the toxicity criteria used to estimate risk are inhalation unit risk factors (IURs)  for inhalation exposures. The basis for these criteria is described briefly in the following sections.  Toxicological values and information regarding the potential for carcinogens and noncarcinogens to cause  adverse  health  effects  in  humans  were  obtained  from  a  hierarchy  of  California  and  USEPA  sources,  beginning  with  the  OEHHA  online  Toxicity  Criteria  Database  (OEHHA, 2017)  and  Integrated  Risk  Information  System  (IRIS)  online  database  (USEPA,  2017b).  OEHHA  and  IRIS  provide  chemical‐specific  toxicity  data  that  represent  CalEPA  and  the  USEPA’s  consensus.  The  quantitative  toxicity  values  and  supporting explanations in IRIS have been reviewed and agreed upon by the USEPA using available studies  on a chemical.     7 4.1   Noncarcinogenic Health Effects    For  the  evaluation  of  noncarcinogens  in  the  risk  assessment,  reference  concentrations  RfCs  for  the  inhalation  route  are  used.  The  RfC  is  expressed  in  µg/m3  and  is  an  estimate  of  the  maximum  air  concentration that can be present over a specified time period without an appreciable risk of deleterious  effects. Chronic reference concentrations are generally used to evaluate the potential noncarcinogenic  effects  associated  with  exposure  periods  between  six  years  and  a  lifetime.  Noncarcinogenic  toxicity  criteria for the COPCs are presented in Tables 6 and 8.   For noncarcinogens, toxicity criteria were selected according to the following hierarchy of sources:     The  more  conservative  of  OEHHA’s  chronic  reference  exposure  levels  (RELs)  or  RfCs  from  IRIS  (USEPA, 2017b). RELs may be obtained from the OEHHA Toxicity Criteria Database (OEHHA, 2017).   USEPA’s Provisional Peer Reviewed Toxicity Values (PPRTVs), as provided for specific chemicals in  the USEPA, Regional Screening Level Table (USEPA, 2017a); and  Other toxicity values, as provided for specific chemicals in the USEPA Regional Screening Level  Table (USEPA, 2017a). Other sources referenced in the USEPA tables include Minimal Risk Levels  (MRLs) from the Agency for Toxic Substances Disease Registry (ATSDR) and values from USEPA  Health Effects Assessment Summary Tables (HEAST).     Carcinogenic Health Effects  4.2     In  a  risk  assessment,  a  slope  factor  is  used  to  estimate  an  upper‐bound  probability  of  an  individual  developing  cancer  as  a  result  of  a  lifetime  of  exposure  to  a  particular  level  of  a  potential  carcinogen.  Specifically, a slope factor is a plausible upper‐bound estimate of the probability of a response per unit  intake of a chemical over a lifetime and is usually the 95 percent upper confidence limit (UCL) of the slope  of the dose‐response curve expressed in (μg/m3)–1 for inhalation pathways.   For carcinogens, toxicity criteria were selected from the OEHHA Toxicity Criteria Database or USEPA IRIS,  if no OEHHA criteria are available.  Carcinogenic toxicity criteria for all COPCs are presented in Tables 7  and 8.  5.0 RISK CHARACTERIZATION    In this section of the Vapor HHRA, toxicity and exposure assessments were integrated into quantitative  expressions  of  noncarcinogenic  hazards  and  carcinogenic  risks  and  an  uncertainty  analysis,  which  is  a  qualitative evaluation. The estimates of hazard and risk for individual COPCs to potential indoor air are  presented numerically in Tables 6 and 7 and for ambient air are presented numerically in Table 8.   5.1   Noncarcinogenic Health Effects    Potential noncarcinogenic  effects were  evaluated by comparing  exposure over a specified  time period  with an RfC derived for a chronic exposure. This ratio of exposure to toxicity is referred to as a hazard  quotient (HQ), which is calculated as follows for inhalation exposures:  8 HazardQuotienti  EC NCi   RfCi where:    ECNCi  RfCi  = Noncancer exposure concentration for chemical “i” (μg/m3); and  = Reference concentration for chemical “i” (μg/m3).  In cases where individual COPCs potentially act on the same organs or result in the same health endpoint  (e.g., respiratory irritants), potential additive effects may be addressed by calculating a hazard index (HI)  as follows:  n HazardIndex   HazardQuotient   i 1 where: i = specific health endpoint  A  HI  or  HQ  (for  effects  which  are  not  additive)  of  less  than  or  equal  to  1  (referred  to  herein  as  the  significance threshold) indicates acceptable levels of exposure for COPCs having an additive effect. In this  Vapor HHRA, a screening‐level HI was calculated by summing the HQs for all COPCs, regardless of toxic  endpoint,  as  recommended  by  agency  guidance  (USEPA,  1989).  This  approach  is  generally  believed  to  overestimate the potential for noncarcinogenic health effects due to simultaneous exposure to multiple  chemicals because it does not account for different toxic endpoints (USEPA, 1989). However, it can be  used as a tool to rapidly identify those exposure scenarios for which exposure to multiple COPCs does not  pose a noncarcinogenic health risk.   It should be noted that HQs or HIs greater than 1 do not necessarily mean that adverse health effects will  be observed. As discussed in Section 4.0, a substantial margin of safety has been incorporated into some  of the RfCs developed for the COPCs. Therefore, for these chemicals, adverse health effects may not be  observed even if the HQ or HI is much larger than 1. In addition, HIs are conservatively summed across all  COPC, regardless of the toxic endpoint, which would overestimate non‐cancer risk. Non‐cancer hazards  estimated for the inhalation pathway for VOCs in indoor air for each location are presented on a sample‐ by‐sample basis in Table 6 and for ambient air based on the maximum ambient air concentration in Table  8.   Residential  The non‐cancer HI for the residential receptor exposed to the COPCs in soil vapor volatilizing to indoor air  range from 0.00002 to 0.02, and in soil vapor volatilizing to the ambient air is 0.0003. The cumulative HIs  for the residential receptor are less than the significant threshold and do not pose a hazard to human  health.      9 Commercial Worker  The non‐cancer HI for the commercial worker exposed to the COPCs in soil vapor volatilizing to indoor air  range from 0.0002 to 0.0008, and in soil vapor volatilizing to the ambient air is 0.00002. The cumulative  HIs for the commercial worker are less than the significant threshold and do not pose a hazard to human  health.  5.2   Carcinogenic Health Effects    Carcinogenic risks are estimated as the incremental probability of an individual developing cancer over a  lifetime as a result of exposure to a potential carcinogen. The IUR converts estimated daily ECs averaged  over  a  lifetime  of  exposure  to  incremental  risk  of  an  individual  developing  cancer  (USEPA,  1989).  This  carcinogenic risk estimate is generally an upper‐bound value since the IUR is often a 95 percent UCL of  probability  of  response  based  on  experimental  animal  data.  Cancer  risk  for  inhalation  exposure  is  calculated as follows:  LifetimeExcessCancerRiski  ECCi  IURi   where:      ECC  IURi  =  =  Cancer exposure concentration for chemical “i” (µg/m3)  inhalation unit risk factor for chemical “i” (µg/m3)–1    The estimated excess cancer risks for each chemical and exposure route are summed regardless of toxic  endpoint to estimate the total excess cancer risk for the exposed individual:  n LifetimeExcessCancerRisk   LifetimeExcessCancerRisk   i 1 The USEPA and CalEPA have defined what is considered to be an acceptable level of risk in similar, though  slightly different, ways. The USEPA considers one in one‐million (1.0×10‐6) to one in ten thousand (1.0×10– 4 ) to be the target range for acceptable risk (USEPA, 1990a, 1990b). Estimates of lifetime excess cancer  risk associated with exposure to chemicals of less than 1.0×10‐6 are considered de minimis, a risk level that  is  so  low  as  to  not  warrant  any  further  investigation  or  analysis  (USEPA,  1990a).  Within  the  state  of  California, CalEPA also generally targets the same range for acceptable risks.   It should be noted that cancer risks in the 1.0×10‐6 to 1.0×10‐4 range or higher do not necessarily mean  that  adverse  health  effects  will  be  observed.  Current  methodology  for  estimating  the  carcinogenic  potential  of  chemicals  could  overestimate  the  true  risk  by  a  considerable  degree.  Theoretical  lifetime  excess  cancer  risks  estimated  for  the  inhalation  pathway  for  VOCs  in  indoor  air  for  each  location  are  presented on a sample‐by‐sample basis in Table 7 and for ambient air based on the maximum ambient air  concentration in Table 8.   10   Residential  The  upper‐bound  cumulative  lifetime  incremental  cancer  risks  for  residential  receptor  exposed  to  the  COPCs  in  soil  vapor  volatilizing  to  indoor  air  range  from  2.5×10‐9  to  2.4×10‐6.  The  cumulative  lifetime  incremental  cancer risk for the residential receptor is greater than 1.0x10‐6. The  maximum cumulative  lifetime incremental cancer risk for the residential receptor is associated with the sample collected from  SGP‐324 at 5 fbg.  The cumulative lifetime cancer risk estimated based on data from this probe is primarily  attributed  to  the  presence  of  chloroform,  and  secondarily  to  the  presence  of  bromodichloromethane,  dibromochloromethane, benzene and ethylbenzene.  This is the only sample location with a cumulative  lifetime incremental cancer risk greater than 1.0x10‐6.  The  upper‐bound  cumulative  lifetime  incremental  cancer  risks  for  residential  receptor  exposed  to  the  COPCs  in  soil  vapor  volatilizing  to  ambient  air  is  3.1x10‐8,  which  is  less  than  1.0x10‐6  and  considered  insignificant.  Commercial Worker  The upper‐bound cumulative lifetime incremental cancer risks for the commercial worker exposed to the  COPCs in soil vapor volatilizing to indoor air range from 3.8×10‐9 to 2.6×10‐8, and in soil vapor volatilizing  to the ambient air is 7.2×10‐10. The cumulative lifetime incremental cancer risks for the commercial worker  are less than 1.0x10‐6, which were considered insignificant.  5.3   Uncertainties    There  is  a  certain  degree  of  uncertainty  in  estimating  exposures  to  chemicals  in  the  environment.  To  account  for  these  uncertainties,  the  risk  assessment  methodology  was  designed  to  be  conservative.   Where values are uncertain because of a lack of site‐specific data, regulatory agency default values and/or  conservative values were used.  Specific sources of conservatism associated with this Vapor HHRA are  discussed below:    The exposure assessment performed as a component of this analysis incorporates a number of  assumptions  regarding  the  current  or  future  presence  of  receptors  and  the  frequency  and  duration of activities that may result in exposure to the receptors. The exposure factors utilized  in  calculating  ECs  and  risks  are  intended  to  provide  a  reasonable  upper‐bound  estimate  of  exposure  for  the  receptors  and  exposure  pathways  considered.  While  these  assumptions  are  unlikely to underestimate exposure and risk, alternative assumptions based on average or most  likely conditions could yield lower estimates of exposure and risk.      Some of the toxicity values utilized in this Vapor HHRA involve the extrapolation of results from  animal  studies.  When  the  results  of  these  animal  studies  are  extrapolated  to  humans,  safety  factors  or  other  conservative  assumptions  are  typically  applied  to  ensure  that  human  health  effects  are  not  underestimated.  For  carcinogenic  effects,  the  risk  assessment  methodology  assumes the absence of a threshold dose.    11   Exposures and associated risks resulting from contact with multiple COPCs were conservatively  assumed to be additive. Furthermore, the additivity of risk was assumed to apply without regard  to health effects endpoints (e.g., target organs, tumor type, toxic endpoint, or mode of action). If  the  health  effects  endpoints  were  considered,  the  cumulative  risks  would  be  lower  than  the  values presented in this assessment.    As is typical with health risk assessments, no factor was used to account for the likely changes in  concentrations of COPCs in soil vapor over time. Over the exposure periods evaluated as part of  certain exposure scenarios (e.g., 26 years) in this Vapor HHRA, concentrations of COPCs in soil  vapor will likely decrease as a result of depletion of the source due to degradation, volatilization,  or other mechanisms. For this Vapor HHRA, it was assumed that chemical concentrations in soil  vapor  remain  constant  over  the  duration  of  exposure.  No  abiotic  or  biotic  degradation  mechanisms, which reduce the concentrations of COPCs over time, are assumed to occur. This  general assumption of steady‐state conditions results in a conservative estimation of long‐term  exposure concentrations.  6.0 REFERENCES    County  of  San  Diego,  2011,  Site  Assessment  and  Mitigation  Manual,  Section  6,  Figure  6‐2,  Risk  Based  Decision Process, Revised, August 15.  Department of Toxic Substances Control (DTSC), Guidance for the Evaluation and Mitigation of Subsurface  Vapor Intrusion to Indoor Air (Vapor Intrusion Guidance), Final, October.  DTSC,  2014,  Recommended  DTSC  Default  Exposure  Factors  for  Use  in  Risk  Assessment  at  California  Hazardous Waste Sites and Permitted Facilities, Office of Human and Ecological Risk (HERO), HERO  Human Health Risk Assessment (HHRA) Note Number: 1, Issue Date: September 30, 2014.  Office  of  Environmental  Health  Hazard  Assessment  (OEHHA),  2017,  Toxicity  Criteria  Database,  online.  http://www.oehha.ca.gov/risk/chemicalDB/index.asp. Accessed July.   United States Environmental Protection Agency (USEPA), 1989, Risk Assessment Guidance for Superfund,  Volume I: Human Health Evaluation Manual (Part A), December.  USEPA, 1990a, Corrective Action for Solid Waste Management Units at Hazardous Waste Management  Facilities, Proposed Rule: Federal Register, v. 55, p. 3078.  USEPA, 1990b, National Oil and Hazardous Substances Pollution Contingency Plan: Federal Register, v. 55,  p. 8666.  USEPA, 2002, Supplemental Guidance for Developing Soil Screening for Superfund Sites, Office of Solid  Waste and Emergency Response, Washington, D.C., OSWER 9355.4‐24, December.  USEPA, 2005, Guidelines for Carcinogen Risk Assessment, Final, EPA/630/R‐03/001F, March.  USEPA,  2017a,  Regional  Screening  Levels  for  Chemical  Contaminants  at  Superfund  Sites,  http://www.epa.gov/reg3hwmd/risk/human/rb‐concentration_table/index.htm, June.  12 USEPA,  2017b,  Integrated  Risk  Information  System  http://www.epa.gov/IRIS/subst/index.html. Accessed July.  13 (IRIS),  online  database,  TABLES Table 1 Soil Vapor Analytical Results Concentrations reported in micrograms per cubic meter (μg/m3) Sample  1,2,4‐Trimethyl‐ 1,3,5‐Trimethyl‐ Sample Location Sample Name Depth Sample Type benzene benzene (feet bgs) Benzene Bromo‐dichloro‐ Carbon disulfide methane Chloroform Dibromo‐chloro‐ Ethyl‐benzene methane Isopropyl‐ benzene meta‐ and para‐ Xylenes Naphthalene n‐Butyl‐benzene n‐Propyl‐ benzene ortho‐Xylene p‐Isopropyl‐ toluene sec‐Butyl‐ benzene Tetrachloro‐ ethene Toluene Trichloro‐fluoro‐ methane RESIDENTIAL  SGP‐42‐5 SGP‐42‐25 SGP‐51‐5 SGP‐51‐25 SGP‐60‐5 SGP‐60‐25 SGP‐73‐5 SGP‐73‐25 SGP‐94‐5 SGP‐94‐25 SGP‐101‐5 SGP‐101‐25 SGP‐108‐5 SGP‐108‐25 SGP‐126‐5 SGP‐126‐25 SGP‐196‐5 SGP‐196‐30 SGP‐202‐5 SGP‐202‐25 SGP‐211‐5 SGP‐211‐25 SGP‐223‐5 SGP‐223‐25 SGP‐253‐5 SGP‐253‐22 SGP‐324‐5 SGP‐324‐25 SGP‐335‐5 SGP‐335‐30 SGP‐342‐5 SGP‐342‐32 SGP‐352‐5 SGP‐352‐25 SGP‐699‐5 SGP‐699‐25 SGP‐711‐5 SGP‐711‐8 SGP‐735‐5 SGP‐735‐15 SGP‐745‐5 SGP‐760‐5 SGP‐760‐20 SGP‐769‐5 SGP‐769‐15 SGP‐824‐5 SGP‐825‐5 SGP‐825‐12 SGP‐42‐5  3PV SGP‐42‐25  3PV SGP‐51‐5  3PV SGP‐51‐25  3PV SGP‐60‐5 SGP‐60‐25 SGP‐73‐5 SGP‐73‐25 SGP‐94‐5  3PV SGP‐94‐25  3PV SGP‐101‐5  3PV SGP‐101‐25  3PV SGP‐108‐5  3PV SGP‐108‐25  3PV SGP‐126‐5  3PV SGP‐126‐25  3PV SGP‐196‐5  3PV SGP‐196‐30  3PV SGP‐202‐5  3PV SGP‐202‐25  3PV SGP‐211‐5  3PV SGP‐211‐25  3PV SGP‐223‐5 SGP‐223‐25 SGP‐253‐5  3PV SGP‐253‐22  3PV SGP‐324‐5 SGP‐324‐25 SGP‐335‐5 SGP‐335‐30 SGP‐342‐5  3PV SGP‐342‐32  3PV SGP‐352‐5 SGP‐352‐25 SGP‐699‐5  3PV SGP‐699‐25  3PV SGP‐711‐5  3PV SGP‐711‐8  3PV SGP‐735‐5  3PV SGP‐735‐15  3PV SGP‐745‐5  3PV SGP‐760‐5  3PV SGP‐760‐20  3PV SGP‐769‐5  3PV SGP‐769‐15  3PV SGP‐824‐5 SGP‐825‐5 SGP‐825‐12 5 25 5 25 5 25 5 25 5 25 5 25 5 25 5 25 5 30 5 25 5 25 5 25 5 22 5 25 5 30 5 32 5 25 5 25 5 8 5 15 5 5 20 5 15 5 5 12 06/27/2017 06/27/2017 06/27/2017 06/27/2017 07/18/2017 07/18/2017 07/18/2017 07/18/2017 06/27/2017 06/27/2017 06/27/2017 06/27/2017 06/27/2017 06/27/2017 06/27/2017 06/27/2017 06/26/2017 06/26/2017 06/26/2017 06/26/2017 06/26/2017 06/26/2017 07/18/2017 07/18/2017 06/28/2017 06/28/2017 07/18/2017 07/18/2017 07/18/2017 07/18/2017 06/27/2017 06/27/2017 07/18/2017 07/18/2017 06/28/2017 06/28/2017 06/28/2017 06/28/2017 06/26/2017 06/26/2017 06/26/2017 06/26/2017 06/26/2017 06/26/2017 06/26/2017 07/17/2017 07/17/2017 07/17/2017 200 280 190 80 800 160 120 420 60 50 150 100 100 40 480 260 50 140 70 90 90 120 280 ND<100 410 40 110 ND<100 260 370 80 10 260 240 450 280 10 ND<20 10 10 220 60 70 70 30 160 140 80 80 110 80 40 300 60 ND<100 170 20 20 70 50 40 10 240 120 10 70 20 40 40 50 100 ND<100 190 20 60 ND<100 80 150 30 ND<20 70 90 210 140 ND<20 ND<20 ND<20 ND<20 80 20 30 30 10 60 ND<100 ND<100 20 40 60 20 30 ND<20 10 70 20 30 30 30 ND<20 10 100 130 ND<20 40 ND<20 20 ND<20 50 10 20 60 10 30 10 40 140 20 ND<20 20 30 100 90 ND<20 ND<20 ND<20 ND<20 40 ND<20 20 20 ND<20 10 10 10 ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<20 ND<20 290 110 ND<100 ND<100 ND<20 ND<20 ND<100 ND<100 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<100 ND<20 ND<20 ND<20 160 ND<100 ND<100 ND<100 ND<100 ND<20 140 ND<20 ND<20 ND<20 ND<20 ND<20 60 ND<20 50 ND<20 160 ND<20 170 ND<100 ND<100 90 90 ND<100 ND<100 ND<100 70 ND<20 ND<20 ND<100 ND<100 70 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<100 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 60 30 ND<20 ND<20 430 230 ND<20 ND<20 ND<20 10 ND<20 10 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 30 10 ND<90 ND<90 ND<90 ND<90 ND<100 ND<100 ND<100 ND<100 ND<90 ND<90 ND<90 ND<90 ND<90 ND<90 ND<90 ND<90 ND<90 ND<90 ND<90 ND<90 ND<90 ND<90 ND<100 ND<100 ND<90 ND<90 190 70 ND<100 ND<100 ND<90 ND<90 ND<100 ND<100 ND<90 ND<90 ND<90 ND<90 ND<90 ND<90 ND<90 ND<90 ND<90 ND<90 ND<90 ND<100 ND<100 ND<100 140 170 210 60 350 ND<100 ND<100 370 40 30 90 70 50 10 240 140 10 180 30 90 70 160 50 ND<100 180 20 160 ND<100 110 430 70 ND<20 70 160 210 150 ND<20 ND<20 ND<20 ND<20 190 40 100 60 20 40 ND<100 ND<100 ND<20 10 10 60 ND<100 ND<100 ND<100 ND<100 ND<20 ND<20 10 ND<20 ND<20 ND<20 30 10 ND<20 10 ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<20 ND<20 ND<100 ND<100 20 20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<100 580 720 760 220 1200 130 100 1300 160 130 390 280 190 50 970 590 50 640 120 330 290 560 340 80 830 60 500 70 460 1400 240 20 320 590 900 620 ND<20 ND<20 20 ND<20 760 180 380 240 70 190 90 80 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 10 ND<20 ND<100 ND<100 ND<100 ND<100 ND<20 ND<20 ND<100 ND<100 10 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<100 40 50 40 20 130 ND<100 ND<100 110 10 ND<20 30 20 20 ND<20 80 40 ND<20 30 ND<20 ND<20 20 30 40 ND<100 70 ND<20 ND<100 ND<100 ND<100 80 20 ND<20 ND<100 40 80 50 ND<20 ND<20 ND<20 ND<20 40 10 20 10 ND<20 ND<100 ND<100 ND<100 200 250 220 70 470 50 40 380 50 30 130 90 70 20 290 160 20 180 40 110 90 160 160 ND<100 280 20 120 ND<100 160 410 80 ND<20 140 220 270 170 ND<20 ND<20 ND<20 ND<20 460 50 80 70 20 90 ND<100 ND<100 20 30 30 50 40 ND<100 ND<100 70 ND<20 ND<20 10 10 10 ND<20 20 ND<20 10 20 ND<20 ND<20 10 30 70 ND<100 10 ND<20 ND<100 ND<100 ND<100 80 20 ND<20 ND<100 ND<100 10 10 ND<20 ND<20 ND<20 ND<20 30 ND<20 10 10 ND<20 ND<100 ND<100 ND<100 ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<20 ND<20 ND<100 ND<100 10 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<100 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 10 ND<20 ND<20 ND<20 370 430 660 130 380 180 ND<200 850 120 100 270 180 100 30 700 580 30 520 60 210 150 480 ND<200 ND<200 470 40 280 ND<200 190 990 160 10 120 240 650 490 ND<20 ND<20 10 10 470 90 300 160 50 90 ND<200 ND<200 20 20 10 ND<20 ND<100 ND<100 ND<100 ND<100 ND<20 ND<20 ND<20 ND<20 ND<20 10 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<20 ND<20 ND<100 ND<100 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<100 SGP‐816‐3 SGP‐817‐5 SGP‐817‐5 REP SGP‐817‐10 SGP‐818‐5 SGP‐818‐10 3 5 5 10 5 10 07/17/2017 07/17/2017 07/17/2017 07/17/2017 07/17/2017 07/17/2017 70 130 110 80 160 150 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 20 10 20 20 30 30 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 40 40 50 70 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 90 190 220 170 230 320 50 20 ND<20 20 ND<20 ND<20 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 90 90 70 110 120 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 ND<20 ND<20 ND<20 ND<20 ND<20 ND<20 ND<200 90 100 110 140 210 ND<100 ND<100 ND<100 ND<100 ND<100 ND<100 COMMERCIAL  SGP‐816‐3 SGP‐817‐5 SGP‐817‐5 SGP‐817‐10 SGP‐818‐5 SGP‐818‐10 Abbreviations: feet bgs = feet below ground surface ND< = not detected above the reporting limit Page 1 of 12 This page intentionally left blank Table 2 Summary of Johnson and Ettinger Model Assumptions Johnson and Ettinger Model Parameters Depth below grade to bottom of enclosed space floor Symbol Units Value LF cm 15 Ls cm SCS vadose zone soil type Average soil temperature Average vapor flow rate into building Vadose zone soil type Vadose zone soil dry bulk density ‐‐ Ts Qsoil ‐‐ ρb, V ‐‐ o C L/min ‐‐ Vadose zone soil total porosity n V Soil vapor sampling depth below grade 152.4 / 304.8 / 457.2 /  609.6 / 762 / 914.4 Source Defualt J&E Model value. Soil vapor sample depths were conservatively selected to be relevant  for soil vapor samples collected as follows: 5 feet (152.4 cm) for  samples collected between 5 and 9.5 feet bgs, 10 feet (304.8 cm) for  samples collected between 10 and 14.5 feet bgs, 15 feet (457.2 cm) for  samples collected between 15 and 19.5 feet bgs, 20 feet (609.6 cm) for  samples collected between 20 and 24.5 feet bgs, 25 feet (762 cm) for  samples collected between 25 and 29.5 feet bgs, and 30 feet (914.4 cm)  for samples collected between 30 and 32 feet bgs. g/cm3 LS (Loam Sand) 24 5 LS (Loam Sand) 1.62 Site‐specific from soil physical property testing. Default J&E model value. Default J&E model value. Site‐specific from soil physical property testing. Site‐specific from soil physical property testing. cm3/cm3 0.39 Site‐specific from soil physical property testing. θw, V cm3/cm3 0.21 Site‐specific from soil physical property testing. Residential ER 1/hr 0.5 Commercial/Industrial ER 1/hr 1 Vadose zone soil water‐filled porosity Indoor air exchange rate Default value for residential buildings, provided by DTSC (2011) and  OEHHA (2005). Default value for commercial buildings, provided by DTSC (2011) and  OEHHA (2005). Abbreviations: ‐‐ = not applicable 1/hr = one per hour bgs = below ground surface cm = centimeter cm3/cm3 = cubic centimeter per cubic centimeter Co = degrees Celsius g/cm3 = grams per cubic centimeter L/min = liters per minute References: Department of Toxic Substances Control (DTSC), 2011, Guidance for the Evaluation and Mitigation of Subsurface Vapor Intrusion to  Indoor Air (Vapor Intrusion Guidance), Final, October. Office of Environmental Health Hazard Assessment (OEHHA), 2005, Human‐Exposure‐Based Screening Numbers Developed to Aid  Estimation of Cleanup Costs for Contaminated Soil, California Environmental Protection Agency, January. Page 2 of 12 Page 12 of 1 This page intentionally left blank Table 3 Calculated Indoor Air Concentrations Concentrations reported in micrograms per cubic meter (μg/m3) Sample Location Sample Name Sample Depth (feet bgs) Sample Type 1,2,4‐Trimethyl‐ 1,3,5‐Trimethyl‐ benzene benzene Benzene Bromo‐dichloro‐ Carbon disulfide methane Chloroform Dibromo‐chloro‐ Ethyl‐benzene methane Isopropyl‐ benzene meta‐ and para‐ Xylenes Naphthalene n‐Butyl‐benzene n‐Propyl‐ benzene ortho‐Xylene p‐Isopropyl‐ toluene sec‐Butyl‐ benzene Tetrachloro‐ ethene Toluene Trichloro‐fluoro‐ methane RESIDENTIAL  5 06/27/2017 SGP‐42‐5 SGP‐42‐5  3PV 25 06/27/2017 SGP‐42‐25 SGP‐42‐25  3PV 5 06/27/2017 SGP‐51‐5 SGP‐51‐5  3PV 25 06/27/2017 SGP‐51‐25 SGP‐51‐25  3PV SGP‐60‐5 SGP‐60‐5 5 07/18/2017 SGP‐60‐25 SGP‐60‐25 25 07/18/2017 SGP‐73‐5 SGP‐73‐5 5 07/18/2017 SGP‐73‐25 SGP‐73‐25 25 07/18/2017 5 06/27/2017 SGP‐94‐5 SGP‐94‐5  3PV SGP‐94‐25 SGP‐94‐25  3PV 25 06/27/2017 SGP‐101‐5 SGP‐101‐5  3PV 5 06/27/2017 SGP‐101‐25  3PV 25 06/27/2017 SGP‐101‐25 SGP‐108‐5 SGP‐108‐5  3PV 5 06/27/2017 SGP‐108‐25 SGP‐108‐25  3PV 25 06/27/2017 SGP‐126‐5 SGP‐126‐5  3PV 5 06/27/2017 SGP‐126‐25  3PV 25 06/27/2017 SGP‐126‐25 SGP‐196‐5 SGP‐196‐5  3PV 5 06/26/2017 30 06/26/2017 SGP‐196‐30 SGP‐196‐30  3PV 5 06/26/2017 SGP‐202‐5 SGP‐202‐5  3PV 25 06/26/2017 SGP‐202‐25 SGP‐202‐25  3PV 5 06/26/2017 SGP‐211‐5 SGP‐211‐5  3PV 25 06/26/2017 SGP‐211‐25 SGP‐211‐25  3PV SGP‐223‐5 SGP‐223‐5 5 07/18/2017 SGP‐223‐25 SGP‐223‐25 25 07/18/2017 5 06/28/2017 SGP‐253‐5 SGP‐253‐5  3PV 22 06/28/2017 SGP‐253‐22 SGP‐253‐22  3PV SGP‐324‐5 SGP‐324‐5 5 07/18/2017 SGP‐324‐25 SGP‐324‐25 25 07/18/2017 SGP‐335‐5 SGP‐335‐5 5 07/18/2017 SGP‐335‐30 SGP‐335‐30 30 07/18/2017 5 06/27/2017 SGP‐342‐5 SGP‐342‐5  3PV 32 06/27/2017 SGP‐342‐32 SGP‐342‐32  3PV SGP‐352‐5 SGP‐352‐5 5 07/18/2017 SGP‐352‐25 SGP‐352‐25 25 07/18/2017 5 06/28/2017 SGP‐699‐5 SGP‐699‐5  3PV 25 06/28/2017 SGP‐699‐25 SGP‐699‐25  3PV 5 06/28/2017 SGP‐711‐5 SGP‐711‐5  3PV 8 06/28/2017 SGP‐711‐8 SGP‐711‐8  3PV 5 06/26/2017 SGP‐735‐5 SGP‐735‐5  3PV 15 06/26/2017 SGP‐735‐15 SGP‐735‐15  3PV 5 06/26/2017 SGP‐745‐5 SGP‐745‐5  3PV 5 06/26/2017 SGP‐760‐5 SGP‐760‐5  3PV 20 06/26/2017 SGP‐760‐20 SGP‐760‐20  3PV 5 06/26/2017 SGP‐769‐5 SGP‐769‐5  3PV 15 06/26/2017 SGP‐769‐15 SGP‐769‐15  3PV SGP‐824‐5 SGP‐824‐5 5 07/17/2017 SGP‐825‐5 SGP‐825‐5 5 07/17/2017 SGP‐825‐12 12 07/17/2017 SGP‐825‐12 RESIDENTIAL SOIL VAPOR TO INDOOR AIR ATTENUATION FACTORS (AF) BY  SAMPLE DEPTH a 5 to 9.5 feet bgs 10 to 14.5 feet bgs 15 to 19.5 feet bgs 20 to 24.5 feet bgs 25 to 29.5 feet bgs 30 to 32 feet bgs 5.1E‐02 1.4E‐02 4.8E‐02 4.1E‐03 2.0E‐01 8.2E‐03 3.1E‐02 2.1E‐02 1.5E‐02 2.6E‐03 3.8E‐02 5.1E‐03 2.0E‐02 5.6E‐03 2.0E‐02 2.0E‐03 7.6E‐02 3.0E‐03 ND 8.6E‐03 5.1E‐03 1.0E‐03 1.8E‐02 2.5E‐03 7.2E‐03 3.0E‐03 2.1E‐02 1.5E‐03 1.1E‐02 ND 3.6E‐03 5.2E‐03 7.2E‐03 2.2E‐03 1.1E‐02 2.2E‐03 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 1.4E‐02 ND ND ND ND ND 1.2E‐02 ND ND ND ND ND ND ND ND ND 1.3E‐03 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 4.0E‐02 9.8E‐03 6.0E‐02 3.5E‐03 9.9E‐02 ND ND 2.1E‐02 1.1E‐02 1.7E‐03 2.6E‐02 4.0E‐03 ND 5.1E‐04 2.5E‐03 3.0E‐03 ND ND ND ND ND ND 2.5E‐03 ND 1.6E‐01 4.1E‐02 2.2E‐01 1.3E‐02 3.4E‐01 7.5E‐03 2.8E‐02 7.5E‐02 4.5E‐02 7.5E‐03 1.1E‐01 1.6E‐02 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 1.0E‐02 2.5E‐03 1.0E‐02 1.0E‐03 3.3E‐02 ND ND 5.6E‐03 2.5E‐03 ND 7.6E‐03 1.0E‐03 5.7E‐02 1.4E‐02 6.3E‐02 4.1E‐03 1.3E‐01 2.9E‐03 1.1E‐02 2.2E‐02 1.4E‐02 1.7E‐03 3.7E‐02 5.2E‐03 4.5E‐03 1.3E‐03 6.7E‐03 2.2E‐03 9.0E‐03 ND ND 3.1E‐03 ND ND 2.2E‐03 4.5E‐04 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 1.2E‐01 2.8E‐02 2.1E‐01 8.5E‐03 1.2E‐01 1.2E‐02 ND 5.5E‐02 3.8E‐02 6.5E‐03 8.6E‐02 1.2E‐02 5.4E‐03 1.1E‐03 2.7E‐03 ND ND ND ND ND ND ND ND ND 2.5E‐02 2.0E‐03 1.2E‐01 1.3E‐02 1.3E‐02 6.0E‐03 1.8E‐02 4.6E‐03 2.3E‐02 6.1E‐03 7.1E‐02 ND 1.0E‐01 2.6E‐03 2.8E‐02 ND 6.6E‐02 1.6E‐02 2.0E‐02 4.3E‐04 6.6E‐02 1.2E‐02 1.1E‐01 1.4E‐02 2.5E‐03 ND 2.5E‐03 8.5E‐04 5.6E‐02 1.5E‐02 4.5E‐03 1.8E‐02 2.6E‐03 4.1E‐02 3.6E‐02 1.0E‐02 1.0E‐02 5.1E‐04 6.1E‐02 6.1E‐03 2.5E‐03 3.0E‐03 5.1E‐03 2.0E‐03 1.0E‐02 2.5E‐03 2.5E‐02 ND 4.8E‐02 1.3E‐03 1.5E‐02 ND 2.0E‐02 6.3E‐03 7.6E‐03 ND 1.8E‐02 4.6E‐03 5.3E‐02 7.1E‐03 ND ND ND ND 2.0E‐02 5.1E‐03 1.9E‐03 7.6E‐03 8.5E‐04 1.5E‐02 ND ND ND 7.5E‐04 3.6E‐02 9.7E‐03 ND 2.5E‐03 ND 1.5E‐03 ND 3.7E‐03 3.6E‐03 1.5E‐03 2.1E‐02 9.3E‐04 1.1E‐02 7.5E‐04 1.4E‐02 8.7E‐03 7.2E‐03 ND 7.2E‐03 2.2E‐03 3.6E‐02 6.7E‐03 ND ND ND ND 1.4E‐02 ND 1.9E‐03 7.2E‐03 ND 3.6E‐03 3.6E‐03 1.8E‐03 ND ND ND ND ND ND ND ND ND ND ND ND ND ND 6.9E‐02 5.2E‐03 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 5.3E‐03 ND 3.7E‐03 ND 1.4E‐02 ND 1.5E‐02 ND ND 3.7E‐02 9.9E‐03 ND ND ND 5.2E‐03 ND ND ND ND 2.9E‐02 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 1.9E‐02 1.9E‐03 ND ND 1.4E‐01 1.5E‐02 ND ND ND 5.4E‐04 ND 6.5E‐04 ND ND ND ND ND ND ND ND ND ND ND ND 9.4E‐03 1.6E‐03 ND ND ND ND ND ND ND ND ND ND ND ND ND ND 3.1E‐02 2.2E‐03 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 1.4E‐02 5.8E‐04 6.8E‐02 8.1E‐03 2.8E‐03 8.6E‐03 8.5E‐03 5.2E‐03 2.0E‐02 9.2E‐03 1.4E‐02 ND 5.1E‐02 1.4E‐03 4.5E‐02 ND 3.1E‐02 2.1E‐02 2.0E‐02 ND 2.0E‐02 9.2E‐03 6.0E‐02 8.6E‐03 ND ND ND ND 5.4E‐02 1.1E‐02 7.2E‐03 1.7E‐02 1.9E‐03 1.1E‐02 ND ND ND ND 7.6E‐03 5.1E‐04 ND 4.2E‐04 ND ND ND ND ND ND 5.1E‐03 ND ND ND ND ND ND ND ND ND 5.1E‐03 1.0E‐03 ND ND ND ND ND ND ND ND ND ND ND ND 5.4E‐02 2.9E‐03 2.7E‐01 3.4E‐02 1.4E‐02 3.1E‐02 3.4E‐02 1.9E‐02 8.2E‐02 3.2E‐02 9.6E‐02 4.6E‐03 2.3E‐01 4.3E‐03 1.4E‐01 4.0E‐03 1.3E‐01 6.7E‐02 6.8E‐02 9.6E‐04 9.1E‐02 3.4E‐02 2.5E‐01 3.6E‐02 ND ND 5.7E‐03 ND 2.2E‐01 5.1E‐02 2.7E‐02 6.8E‐02 6.7E‐03 5.4E‐02 2.5E‐02 1.1E‐02 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 4.5E‐03 ND ND ND ND ND ND ND ND ND 2.2E‐03 ND ND ND ND ND ND ND ND ND 2.2E‐03 ND ND ND ND ND ND ND ND ND ND ND ND ND 5.1E‐03 ND 2.0E‐02 2.0E‐03 ND 1.3E‐03 ND ND 5.1E‐03 1.5E‐03 1.0E‐02 ND 1.8E‐02 ND ND ND ND 3.4E‐03 5.1E‐03 ND ND 2.0E‐03 2.0E‐02 2.5E‐03 ND ND ND ND 1.0E‐02 2.5E‐03 1.3E‐03 2.5E‐03 ND ND ND ND 2.0E‐02 1.2E‐03 8.3E‐02 9.3E‐03 5.7E‐03 8.7E‐03 1.1E‐02 6.4E‐03 2.6E‐02 9.3E‐03 4.6E‐02 ND 8.0E‐02 1.4E‐03 3.4E‐02 ND 4.6E‐02 2.0E‐02 2.3E‐02 ND 4.0E‐02 1.3E‐02 7.7E‐02 9.9E‐03 ND ND ND ND 1.3E‐01 1.4E‐02 5.8E‐03 2.0E‐02 1.9E‐03 2.6E‐02 ND ND 2.2E‐03 ND 4.5E‐03 ND 2.2E‐03 7.4E‐04 ND ND 2.2E‐03 1.3E‐03 1.6E‐02 ND 2.2E‐03 ND ND ND ND 3.0E‐03 4.5E‐03 ND ND ND 2.2E‐03 4.5E‐04 ND ND ND ND 6.7E‐03 ND 5.6E‐04 2.2E‐03 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 2.2E‐03 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 7.1E‐04 ND ND ND 3.2E‐02 2.0E‐03 2.2E‐01 3.8E‐02 9.5E‐03 2.8E‐02 1.9E‐02 1.4E‐02 4.8E‐02 3.1E‐02 ND ND 1.5E‐01 3.3E‐03 8.9E‐02 ND 6.0E‐02 5.4E‐02 5.1E‐02 5.4E‐04 3.8E‐02 1.6E‐02 2.1E‐01 3.2E‐02 ND ND 3.2E‐03 1.1E‐03 1.5E‐01 2.9E‐02 2.4E‐02 5.1E‐02 5.4E‐03 2.9E‐02 ND ND ND 5.5E‐04 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 2.5E‐04 1.3E‐04 8.5E‐05 6.4E‐05 5.1E‐05 4.3E‐05 2.5E‐04 1.3E‐04 8.5E‐05 6.3E‐05 5.1E‐05 4.2E‐05 3.6E‐04 1.8E‐04 1.2E‐04 9.3E‐05 7.5E‐05 6.2E‐05 2.4E‐04 1.2E‐04 7.9E‐05 6.0E‐05 4.8E‐05 4.0E‐05 4.1E‐04 2.2E‐04 1.5E‐04 1.1E‐04 8.8E‐05 7.4E‐05 3.1E‐04 1.6E‐04 1.1E‐04 8.1E‐05 6.5E‐05 5.4E‐05 1.6E‐04 8.0E‐05 5.3E‐05 4.0E‐05 3.2E‐05 2.6E‐05 2.8E‐04 1.4E‐04 9.6E‐05 7.2E‐05 5.8E‐05 4.8E‐05 2.5E‐04 1.3E‐04 8.5E‐05 6.4E‐05 5.1E‐05 4.2E‐05 2.8E‐04 1.4E‐04 9.6E‐05 7.2E‐05 5.7E‐05 4.8E‐05 2.6E‐04 1.3E‐04 8.6E‐05 6.5E‐05 5.2E‐05 4.3E‐05 2.2E‐04 1.1E‐04 7.4E‐05 5.6E‐05 4.5E‐05 3.7E‐05 2.5E‐04 1.3E‐04 8.4E‐05 6.3E‐05 5.1E‐05 4.2E‐05 2.9E‐04 1.4E‐04 9.6E‐05 7.2E‐05 5.8E‐05 4.8E‐05 2.2E‐04 1.1E‐04 7.4E‐05 5.6E‐05 4.5E‐05 3.7E‐05 2.2E‐04 1.1E‐04 7.4E‐05 5.6E‐05 4.5E‐05 3.7E‐05 2.2E‐04 1.1E‐04 7.1E‐05 5.3E‐05 4.3E‐05 3.6E‐05 3.2E‐04 1.6E‐04 1.1E‐04 8.1E‐05 6.5E‐05 5.4E‐05 2.7E‐04 1.4E‐04 9.1E‐05 6.9E‐05 5.5E‐05 4.6E‐05 8.9E‐03 5.5E‐03 1.4E‐02 2.6E‐03 2.0E‐02 4.8E‐03 ND ND ND ND ND ND 3.6E‐03 6.2E‐04 3.6E‐03 9.3E‐04 5.4E‐03 1.4E‐03 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 5.7E‐03 1.4E‐03 7.1E‐03 2.5E‐03 ND ND ND ND ND ND 1.3E‐02 9.1E‐03 3.1E‐02 6.1E‐03 3.3E‐02 1.1E‐02 6.4E‐03 8.6E‐04 ND 6.5E‐04 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 4.3E‐03 1.3E‐02 2.5E‐03 1.6E‐02 4.3E‐03 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 4.9E‐03 1.6E‐02 4.5E‐03 2.2E‐02 8.5E‐03 ND ND ND ND ND ND 1.3E‐04 6.4E‐05 1.3E‐04 6.3E‐05 1.8E‐04 9.2E‐05 1.2E‐04 6.0E‐05 2.1E‐04 1.1E‐04 1.6E‐04 8.0E‐05 8.1E‐05 4.0E‐05 1.4E‐04 7.2E‐05 1.3E‐04 6.3E‐05 1.4E‐04 7.1E‐05 1.3E‐04 6.4E‐05 1.1E‐04 5.6E‐05 1.3E‐04 6.3E‐05 1.4E‐04 7.2E‐05 1.1E‐04 5.6E‐05 1.1E‐04 5.6E‐05 1.1E‐04 5.4E‐05 1.6E‐04 8.1E‐05 1.4E‐04 6.8E‐05 COMMERCIAL  SGP‐816‐3 SGP‐816‐3 3 07/17/2017 SGP‐817‐5 SGP‐817‐5 5 07/17/2017 SGP‐817‐5 SGP‐817‐5 REP 5 07/17/2017 SGP‐817‐10 SGP‐817‐10 10 07/17/2017 SGP‐818‐5 SGP‐818‐5 5 07/17/2017 SGP‐818‐10 10 07/17/2017 SGP‐818‐10 COMMERCIAL SOIL VAPOR TO INDOOR AIR ATTENUATION FACTORS (AF) BY  SAMPLE DEPTH a 5 to 9.5 feet bgs 10 to 14.5 feet bgs Page 3 of 12 Table 3 Calculated Indoor Air Concentrations Concentrations reported in micrograms per cubic meter (μg/m3) Sample Location Sample Name Sample Depth (feet bgs) Sample Type RESIDENTIAL  5 06/27/2017 SGP‐42‐5 SGP‐42‐5  3PV 25 06/27/2017 SGP‐42‐25 SGP‐42‐25  3PV 5 06/27/2017 SGP‐51‐5 SGP‐51‐5  3PV 25 06/27/2017 SGP‐51‐25 SGP‐51‐25  3PV SGP‐60‐5 SGP‐60‐5 5 07/18/2017 SGP‐60‐25 SGP‐60‐25 25 07/18/2017 SGP‐73‐5 SGP‐73‐5 5 07/18/2017 SGP‐73‐25 SGP‐73‐25 25 07/18/2017 5 06/27/2017 SGP‐94‐5 SGP‐94‐5  3PV SGP‐94‐25 SGP‐94‐25  3PV 25 06/27/2017 SGP‐101‐5 SGP‐101‐5  3PV 5 06/27/2017 SGP‐101‐25  3PV 25 06/27/2017 SGP‐101‐25 SGP‐108‐5 SGP‐108‐5  3PV 5 06/27/2017 SGP‐108‐25 SGP‐108‐25  3PV 25 06/27/2017 SGP‐126‐5 SGP‐126‐5  3PV 5 06/27/2017 SGP‐126‐25  3PV 25 06/27/2017 SGP‐126‐25 SGP‐196‐5 SGP‐196‐5  3PV 5 06/26/2017 30 06/26/2017 SGP‐196‐30 SGP‐196‐30  3PV 5 06/26/2017 SGP‐202‐5 SGP‐202‐5  3PV 25 06/26/2017 SGP‐202‐25 SGP‐202‐25  3PV 5 06/26/2017 SGP‐211‐5 SGP‐211‐5  3PV 25 06/26/2017 SGP‐211‐25 SGP‐211‐25  3PV SGP‐223‐5 SGP‐223‐5 5 07/18/2017 SGP‐223‐25 SGP‐223‐25 25 07/18/2017 5 06/28/2017 SGP‐253‐5 SGP‐253‐5  3PV 22 06/28/2017 SGP‐253‐22 SGP‐253‐22  3PV SGP‐324‐5 SGP‐324‐5 5 07/18/2017 SGP‐324‐25 SGP‐324‐25 25 07/18/2017 SGP‐335‐5 SGP‐335‐5 5 07/18/2017 SGP‐335‐30 SGP‐335‐30 30 07/18/2017 5 06/27/2017 SGP‐342‐5 SGP‐342‐5  3PV 32 06/27/2017 SGP‐342‐32 SGP‐342‐32  3PV SGP‐352‐5 SGP‐352‐5 5 07/18/2017 SGP‐352‐25 SGP‐352‐25 25 07/18/2017 5 06/28/2017 SGP‐699‐5 SGP‐699‐5  3PV 25 06/28/2017 SGP‐699‐25 SGP‐699‐25  3PV 5 06/28/2017 SGP‐711‐5 SGP‐711‐5  3PV 8 06/28/2017 SGP‐711‐8 SGP‐711‐8  3PV 5 06/26/2017 SGP‐735‐5 SGP‐735‐5  3PV 15 06/26/2017 SGP‐735‐15 SGP‐735‐15  3PV 5 06/26/2017 SGP‐745‐5 SGP‐745‐5  3PV 5 06/26/2017 SGP‐760‐5 SGP‐760‐5  3PV 20 06/26/2017 SGP‐760‐20 SGP‐760‐20  3PV 5 06/26/2017 SGP‐769‐5 SGP‐769‐5  3PV 15 06/26/2017 SGP‐769‐15 SGP‐769‐15  3PV SGP‐824‐5 SGP‐824‐5 5 07/17/2017 SGP‐825‐5 SGP‐825‐5 5 07/17/2017 SGP‐825‐12 12 07/17/2017 SGP‐825‐12 RESIDENTIAL SOIL VAPOR TO INDOOR AIR ATTENUATION FACTORS (AF) BY  SAMPLE DEPTH a 5 to 9.5 feet bgs 10 to 14.5 feet bgs 15 to 19.5 feet bgs 20 to 24.5 feet bgs 25 to 29.5 feet bgs 30 to 32 feet bgs Abbreviations: feet bgs = feet below ground surface ND = not detected Footnotes: a  For sample locations where a duplicate sample was collected, the analytical results used are the highest detected concentration b  Chemical‐ and depth‐specific attenuation factors from TRC's March 2014 Revised Conceptual Site Model Investigation Report ,  Footnotes: a  Chemical‐ and depth‐specific attenuation factors from Attachment A. b  The soil vapor concentrations (Csv) from Table 1. Indoor Air Equation b Predicted Concentration in Indoor Air (Cair) (μg/m3) = Csv (μg/m3) x AF COMMERCIAL  SGP‐816‐3 SGP‐816‐3 3 07/17/2017 SGP‐817‐5 SGP‐817‐5 5 07/17/2017 5 07/17/2017 SGP‐817‐5 SGP‐817‐5 REP SGP‐817‐10 SGP‐817‐10 10 07/17/2017 SGP‐818‐5 SGP‐818‐5 5 07/17/2017 SGP‐818‐10 10 07/17/2017 SGP‐818‐10 COMMERCIAL SOIL VAPOR TO INDOOR AIR ATTENUATION FACTORS (AF) BY  SAMPLE DEPTH a 5 to 9.5 feet bgs 10 to 14.5 feet bgs Page 4 of 12 Table 4 Calculation of Ambient Air Concentrations Maximum Soil Vapor  Sampling Depth Below  Diffusivity in Air  b Grade Concentration  a Csv Ls Di (cm2/sec) (ft bgs) (meter) (μg/m3) Constituent Effective  Diffusivity Da (cm2/sec) Emission Rate Concentration in Ambient Air Ei (mg/m2‐sec) (mg/m3) Caa (µg/m3) Residential 800 300 100 290 90 430 190 350 30 1,200 20 130 470 70 10 10 700 20 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 15 5 5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 4.6 1.5 1.5 0.061 0.060 0.090 0.056 0.106 0.077 0.037 0.069 0.060 0.068 0.053 0.060 0.069 0.053 0.053 0.051 0.078 0.065 1.3E‐03 1.3E‐03 1.9E‐03 1.2E‐03 2.3E‐03 1.7E‐03 8.0E‐04 1.5E‐03 1.3E‐03 1.5E‐03 1.1E‐03 1.3E‐03 1.5E‐03 1.1E‐03 1.1E‐03 1.1E‐03 1.7E‐03 1.4E‐03 6.9E‐08 2.6E‐08 1.3E‐08 2.3E‐08 1.4E‐08 4.7E‐08 9.9E‐09 3.4E‐08 2.6E‐09 1.2E‐07 1.5E‐09 1.1E‐08 4.6E‐08 5.3E‐09 7.5E‐10 2.4E‐10 7.8E‐08 1.9E‐09 2.3E‐06 8.6E‐07 4.3E‐07 7.8E‐07 4.5E‐07 1.6E‐06 3.3E‐07 1.1E‐06 8.6E‐08 3.9E‐06 5.0E‐08 3.7E‐07 1.5E‐06 1.8E‐07 2.5E‐08 8.0E‐09 2.6E‐06 6.2E‐08 2.3E‐03 8.6E‐04 4.3E‐04 7.8E‐04 4.5E‐04 1.6E‐03 3.3E‐04 1.1E‐03 8.6E‐05 3.9E‐03 5.0E‐05 3.7E‐04 1.5E‐03 1.8E‐04 2.5E‐05 8.0E‐06 2.6E‐03 6.2E‐05 1,2,4‐Trimethylbenzene Benzene Ethylbenzene meta‐ and para‐Xylenes Naphthalene ortho‐Xylene Toluene 160 30 50 230 50 110 140 5 5 5 5 3 5 5 1.5 1.5 1.5 1.5 0.9 1.5 1.5 0.061 0.090 0.069 0.068 0.061 0.069 0.078 1.3E‐03 1.9E‐03 1.5E‐03 1.5E‐03 1.3E‐03 1.5E‐03 1.7E‐03 1.4E‐08 3.8E‐09 4.9E‐09 2.2E‐08 7.2E‐09 1.1E‐08 1.6E‐08 3.3E‐07 9.2E‐08 1.2E‐07 5.4E‐07 1.7E‐07 2.6E‐07 3.7E‐07 3.3E‐04 9.2E‐05 1.2E‐04 5.4E‐04 1.7E‐04 2.6E‐04 3.7E‐04 Parameters Air Filled Soil Porosity Total Porosity Symbol Pa Pt Value 0.18 0.39 Conversion Factor Conversion Factor CFm2cm2 CFmgμg 0.0001 0.001 Air Dispersion Factor ‐ School X/Qschool X/Qhome 24 1,2,4‐Trimethylbenzene 1,3,5‐Trimethylbenzene Benzene Bromodichloromethane Carbon disulfide Chloroform Dibromochloromethane Ethylbenzene Isopropylbenzene meta‐ and para‐Xylenes n‐Butylbenzene n‐Propylbenzene ortho‐Xylene p‐Isopropyltoluene sec‐Butylbenzene Tetrachloroethene Toluene Trichlorofluoromethane Commercial Air Dispersion Factor ‐ Home 33 Equations Effective Diffusivity Da = Di x (Pa3.33 / Pt2) Units unitless unitless m2/cm2 Source Analytcal Results Analytcal Results mg/μg (mg/m3) per (mg/m2‐sec) (mg/m3) per (mg/m2‐sec) ‐‐ ‐‐ Table 2 Table 2 Abbreviations: ‐‐ = not applicable cm2/sec = centimeter squared per second m2/cm2 = meter squared per centimeter squared Emission Rate Ei = (Csv x Da x CFmgμg x CFm2cm2) / Ls Ambient Air Concentration Caa = Ei x X/Q mg/m2‐sec = milligrams per meter squared per second mg/m3 = milligrams per cubic meter mg/μg = milligram per microgram NA = not available ND = not detected μg/m3 = micrograms per cubic meter Footnotes: a  From Table 1. Maximum concentration from the shallowest soil vapor sample. b  From the Risk Assessment Information System (RAIS), 2017. References: The Risk Assessment Information System (RAIS), 2017, Chemical Specific Parameters. rais.ornl.gov. July. United States Environmental Protection Agency (USEPA), 1996, Soil Screening Guidance: Technical  Background Document. EPA/540/R95/128. May. Page 5 of 12 Table 5 Air Dispersion Factor (X/Q) Area of Source Source Scenario Soil Soil Commercial Homes Parameter Conversion Factor from kg to mg Conversion Factor from g to mg Dispersion Factor  for Volatiles Q/C Air Dispersion  Factor X/Q (g/m2‐sec) per  (mg/m3) per  (acre) 9.0 90.0 (kg/m3) 42 30.1 (mg/m2‐sec) 24 33.3 Symbol CFmg/kg CFmg/g Value 1.E+06 1.E+03 Units mg/kg mg/g As Dispersion Factor Constants a A Constant B Constant C Constant B C Ac Location Source Location Zone State Source(s) ‐‐ ‐‐ City 4 2 CA Los Angeles 11.91 18.44 209.78 41.88 4 2 CA Los Angeles 11.91 18.44 209.78 30.07 Equations a Dispersion Factor Q/C = Ac x exp[(ln As ‐ B)2 ÷ C] Air Dispersion Factor X/Q = CFmg/kg Q/C x CFmg/g Abbreviations: ‐‐ = not applicable g/m2‐sec = grams per meter squared per second kg/m3 = kilograms per cubic meter mg/g = milligrams per gram mg/kg = milligrams per kilogram mg/m2‐sec = milligrams per meter squared per second mg/m3 = milligrams per cubic meter Footnotes: a Dispersion Factor Soil Q/C  From USEPA, 2002. References: United States Environmental Protection Agency (USEPA), 2002, Supplemental Guidance for Developing Soil Screening  Levels for Superfund Sites. OSWER 9355.4‐24. December. Page 6 of 12 Table 6 Inhalation of VOCs in Indoor Air from Soil Vapor ‐ Noncancer Hazards Sample Location 1,2,4‐Trimethyl‐ 1,3,5‐Trimethyl‐ benzene benzene Bromo‐dichloro‐ Carbon disulfide methane Dibromo‐chloro‐ Ethyl‐benzene methane Isopropyl‐ benzene meta‐ and para‐ Xylenes Naphthalene n‐Butyl‐benzene n‐Propyl‐ benzene ortho‐Xylene p‐Isopropyl‐ toluene sec‐Butyl‐ benzene Tetrachloro‐ ethene Toluene Trichloro‐fluoro‐ methane 3.8E‐05 9.4E‐06 5.7E‐05 3.3E‐06 9.5E‐05 ‐‐ ‐‐ 2.0E‐05 1.1E‐05 1.7E‐06 2.4E‐05 3.9E‐06 1.4E‐05 5.5E‐07 6.5E‐05 7.7E‐06 2.7E‐06 8.3E‐06 8.2E‐06 5.0E‐06 1.9E‐05 8.8E‐06 1.4E‐05 ‐‐ ‐‐ 1.2E‐06 6.1E‐06 7.3E‐06 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 6.1E‐06 ‐‐ ‐‐ ‐‐ 1.8E‐05 1.2E‐06 ‐‐ 1.0E‐06 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 1.6E‐03 4.0E‐04 2.1E‐03 1.2E‐04 3.3E‐03 7.2E‐05 2.7E‐04 7.2E‐04 4.3E‐04 7.2E‐05 1.1E‐03 1.5E‐04 5.2E‐04 2.8E‐05 2.6E‐03 3.3E‐04 1.4E‐04 2.9E‐04 3.3E‐04 1.8E‐04 7.9E‐04 3.1E‐04 9.2E‐04 4.4E‐05 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 2.2E‐05 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 9.7E‐06 2.4E‐06 9.7E‐06 9.7E‐07 3.1E‐05 ‐‐ ‐‐ 5.3E‐06 2.4E‐06 ‐‐ 7.3E‐06 9.7E‐07 4.8E‐06 ‐‐ 1.9E‐05 1.9E‐06 ‐‐ 1.2E‐06 ‐‐ ‐‐ 4.8E‐06 1.5E‐06 9.7E‐06 ‐‐ 5.5E‐04 1.4E‐04 6.0E‐04 3.9E‐05 1.3E‐03 2.8E‐05 1.1E‐04 2.1E‐04 1.4E‐04 1.7E‐05 3.6E‐04 5.0E‐05 1.9E‐04 1.1E‐05 7.9E‐04 8.9E‐05 5.5E‐05 8.3E‐05 1.1E‐04 6.1E‐05 2.5E‐04 8.9E‐05 4.4E‐04 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 3.8E‐04 9.0E‐05 6.7E‐04 2.7E‐05 3.9E‐04 3.8E‐05 ‐‐ 1.8E‐04 1.2E‐04 2.1E‐05 2.7E‐04 3.8E‐05 1.0E‐04 6.3E‐06 7.1E‐04 1.2E‐04 3.0E‐05 9.0E‐05 6.1E‐05 4.4E‐05 1.5E‐04 1.0E‐04 ‐‐ ‐‐ 4.3E‐06 8.8E‐07 2.2E‐06 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 4.4E‐07 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 3.7E‐04 2.7E‐05 ‐‐ 4.9E‐05 1.4E‐06 4.3E‐05 ‐‐ 3.0E‐05 1.2E‐05 ‐‐ ‐‐ ‐‐ ‐‐ 2.3E‐03 4.1E‐05 1.4E‐03 3.9E‐05 1.2E‐03 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 1.1E‐05 ‐‐ ‐‐ ‐‐ ‐‐ 1.7E‐05 ‐‐ ‐‐ ‐‐ ‐‐ 7.7E‐04 1.4E‐05 3.3E‐04 ‐‐ 4.4E‐04 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 4.8E‐04 1.0E‐05 2.8E‐04 ‐‐ 1.9E‐04 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 5.3E‐06 ‐‐ 6.3E‐06 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 9.2E‐05 1.6E‐05 1.3E‐03 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 3.7E‐04 2.0E‐05 1.9E‐05 ‐‐ 1.9E‐05 8.8E‐06 5.7E‐05 8.3E‐06 ‐‐ ‐‐ ‐‐ ‐‐ 5.2E‐05 1.1E‐05 6.9E‐06 1.6E‐05 1.8E‐06 1.1E‐05 ‐‐ ‐‐ 9.5E‐05 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 1.2E‐05 2.4E‐06 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 1.8E‐05 6.4E‐04 6.5E‐04 9.2E‐06 8.7E‐04 3.3E‐04 2.4E‐03 3.4E‐04 ‐‐ ‐‐ 5.4E‐05 ‐‐ 2.1E‐03 4.9E‐04 2.6E‐04 6.5E‐04 6.4E‐05 5.2E‐04 2.4E‐04 1.1E‐04 3.3E‐03 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 1.1E‐05 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 2.2E‐05 3.2E‐06 4.8E‐06 ‐‐ ‐‐ 1.9E‐06 1.9E‐05 2.4E‐06 ‐‐ ‐‐ ‐‐ ‐‐ 9.7E‐06 2.4E‐06 1.2E‐06 2.4E‐06 ‐‐ ‐‐ ‐‐ ‐‐ 3.1E‐05 1.9E‐04 2.2E‐04 ‐‐ 3.8E‐04 1.2E‐04 7.4E‐04 9.4E‐05 ‐‐ ‐‐ ‐‐ ‐‐ 1.3E‐03 1.4E‐04 5.6E‐05 1.9E‐04 1.8E‐05 2.5E‐04 ‐‐ ‐‐ 1.3E‐03 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 5.4E‐06 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 5.4E‐06 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 2.0E‐05 ‐‐ ‐‐ ‐‐ 2.0E‐05 1.7E‐04 1.6E‐04 1.7E‐06 1.2E‐04 5.0E‐05 6.6E‐04 1.0E‐04 ‐‐ ‐‐ 1.0E‐05 3.5E‐06 4.8E‐04 9.1E‐05 7.8E‐05 1.6E‐04 1.7E‐05 9.1E‐05 ‐‐ ‐‐ 7.1E‐04 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 4.3E‐06 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 1.3E‐06 3.3E‐07 1.6E‐06 5.7E‐07 1.6E‐06 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 2.9E‐05 2.1E‐05 7.1E‐05 1.4E‐05 7.4E‐05 2.6E‐05 7.4E‐05 4.9E‐04 6.5E‐05 ‐‐ 4.9E‐05 ‐‐ ‐‐ 4.9E‐04 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 9.9E‐06 2.9E‐05 5.8E‐06 3.6E‐05 9.9E‐06 3.6E‐05 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 3.7E‐06 1.2E‐05 3.4E‐06 1.7E‐05 6.5E‐06 1.7E‐05 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ Sample Depth (feet bgs) Sample Type SGP‐42‐5  3PV SGP‐42‐25  3PV SGP‐51‐5  3PV SGP‐51‐25  3PV SGP‐60‐5 SGP‐60‐25 SGP‐73‐5 SGP‐73‐25 SGP‐94‐5  3PV SGP‐94‐25  3PV SGP‐101‐5  3PV SGP‐101‐25  3PV SGP‐108‐5  3PV SGP‐108‐25  3PV SGP‐126‐5  3PV SGP‐126‐25  3PV SGP‐196‐5  3PV SGP‐196‐30  3PV SGP‐202‐5  3PV SGP‐202‐25  3PV SGP‐211‐5  3PV SGP‐211‐25  3PV SGP‐223‐5 SGP‐223‐25 5 25 5 25 5 25 5 25 5 25 5 25 5 25 5 25 5 30 5 25 5 25 5 25 06/27/2017 06/27/2017 06/27/2017 06/27/2017 07/18/2017 07/18/2017 07/18/2017 07/18/2017 06/27/2017 06/27/2017 06/27/2017 06/27/2017 06/27/2017 06/27/2017 06/27/2017 06/27/2017 06/26/2017 06/26/2017 06/26/2017 06/26/2017 06/26/2017 06/26/2017 07/18/2017 07/18/2017 8.1E‐04 2.3E‐04 7.7E‐04 6.5E‐05 3.3E‐03 1.3E‐04 4.9E‐04 3.4E‐04 2.4E‐04 4.1E‐05 6.1E‐04 8.2E‐05 4.1E‐04 3.3E‐05 2.0E‐03 2.1E‐04 2.0E‐04 9.5E‐05 2.8E‐04 7.4E‐05 3.7E‐04 9.8E‐05 1.1E‐03 ‐‐ 4.8E‐04 1.3E‐04 4.8E‐04 4.9E‐05 1.8E‐03 7.3E‐05 ‐‐ 2.1E‐04 1.2E‐04 2.4E‐05 4.2E‐04 6.1E‐05 2.4E‐04 1.2E‐05 1.5E‐03 1.5E‐04 6.1E‐05 7.1E‐05 1.2E‐04 4.9E‐05 2.4E‐04 6.1E‐05 6.1E‐04 ‐‐ 2.3E‐03 9.6E‐04 6.9E‐03 4.8E‐04 3.4E‐03 ‐‐ 1.1E‐03 1.7E‐03 2.3E‐03 7.2E‐04 3.4E‐03 7.2E‐04 ‐‐ 2.4E‐04 1.1E‐02 3.1E‐03 ‐‐ 8.0E‐04 ‐‐ 4.8E‐04 ‐‐ 1.2E‐03 1.1E‐03 4.8E‐04 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 1.9E‐05 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 1.7E‐05 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 7.3E‐06 ‐‐ 5.1E‐06 ‐‐ 1.9E‐05 ‐‐ 2.1E‐05 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 1.3E‐05 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 1.8E‐04 1.9E‐05 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ SGP‐253‐5  3PV SGP‐253‐22  3PV SGP‐324‐5 SGP‐324‐25 SGP‐335‐5 5 22 5 25 5 06/28/2017 06/28/2017 07/18/2017 07/18/2017 07/18/2017 1.7E‐03 4.1E‐05 4.5E‐04 ‐‐ 1.1E‐03 1.2E‐03 3.0E‐05 3.6E‐04 ‐‐ 4.8E‐04 6.9E‐03 3.0E‐04 3.4E‐03 2.4E‐04 4.6E‐03 ‐‐ ‐‐ 8.3E‐04 6.3E‐05 ‐‐ 5.1E‐05 1.4E‐05 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 1.3E‐03 1.5E‐04 ‐‐ 2.5E‐04 3.3E‐04 6.8E‐06 1.1E‐03 2.0E‐04 1.8E‐03 2.3E‐04 4.1E‐05 ‐‐ 4.1E‐05 1.4E‐05 9.0E‐04 2.4E‐04 7.2E‐05 2.8E‐04 4.1E‐05 6.5E‐04 5.7E‐04 1.6E‐04 3.3E‐03 1.5E‐04 1.8E‐04 ‐‐ 4.2E‐04 1.1E‐04 1.3E‐03 1.7E‐04 ‐‐ ‐‐ ‐‐ ‐‐ 4.8E‐04 1.2E‐04 4.6E‐05 1.8E‐04 2.0E‐05 3.6E‐04 ‐‐ ‐‐ 1.8E‐03 2.8E‐03 2.3E‐03 ‐‐ 2.3E‐03 7.2E‐04 1.1E‐02 2.1E‐03 ‐‐ ‐‐ ‐‐ ‐‐ 4.6E‐03 ‐‐ 6.0E‐04 2.3E‐03 ‐‐ 1.1E‐03 1.1E‐03 5.9E‐04 1.1E‐02 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 8.3E‐04 7.1E‐06 ‐‐ ‐‐ ‐‐ ‐‐ 4.0E‐05 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 5.1E‐05 3.4E‐05 2.1E‐05 5.3E‐05 9.7E‐06 7.7E‐05 1.8E‐05 7.7E‐05 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 2.7E‐04 4.7E‐05 2.7E‐04 7.1E‐05 4.1E‐04 1.1E‐04 4.1E‐04 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ Sample Name Benzene Chloroform RESIDENTIAL  SGP‐42‐5 SGP‐42‐25 SGP‐51‐5 SGP‐51‐25 SGP‐60‐5 SGP‐60‐25 SGP‐73‐5 SGP‐73‐25 SGP‐94‐5 SGP‐94‐25 SGP‐101‐5 SGP‐101‐25 SGP‐108‐5 SGP‐108‐25 SGP‐126‐5 SGP‐126‐25 SGP‐196‐5 SGP‐196‐30 SGP‐202‐5 SGP‐202‐25 SGP‐211‐5 SGP‐211‐25 SGP‐223‐5 SGP‐223‐25 SGP‐253‐5 SGP‐253‐22 SGP‐324‐5 SGP‐324‐25 SGP‐335‐5 SGP‐335‐30 SGP‐342‐5 SGP‐342‐32 SGP‐352‐5 SGP‐352‐25 SGP‐699‐5 SGP‐699‐25 SGP‐711‐5 SGP‐711‐8 SGP‐735‐5 SGP‐735‐15 SGP‐745‐5 SGP‐760‐5 SGP‐760‐20 SGP‐769‐5 SGP‐769‐15 SGP‐824‐5 SGP‐825‐5 SGP‐825‐12 SGP‐335‐30 30 07/18/2017 SGP‐342‐5  3PV 5 06/27/2017 SGP‐342‐32  3PV 32 06/27/2017 SGP‐352‐5 5 07/18/2017 SGP‐352‐25 25 07/18/2017 SGP‐699‐5  3PV 5 06/28/2017 25 06/28/2017 SGP‐699‐25  3PV SGP‐711‐5  3PV 5 06/28/2017 SGP‐711‐8  3PV 8 06/28/2017 SGP‐735‐5  3PV 5 06/26/2017 SGP‐735‐15  3PV 15 06/26/2017 SGP‐745‐5  3PV 5 06/26/2017 SGP‐760‐5  3PV 5 06/26/2017 20 06/26/2017 SGP‐760‐20  3PV 5 06/26/2017 SGP‐769‐5  3PV 15 06/26/2017 SGP‐769‐15  3PV SGP‐824‐5 5 07/17/2017 SGP‐825‐5 5 07/17/2017 SGP‐825‐12 12 07/17/2017 Maximum residential predicted noncancer hazard index by chemical COMMERCIAL  SGP‐816‐3 SGP‐817‐5 SGP‐817‐5 SGP‐817‐10 SGP‐818‐5 SGP‐818‐10 SGP‐816‐3 3 07/17/2017 SGP‐817‐5 5 07/17/2017 5 07/17/2017 SGP‐817‐5 REP SGP‐817‐10 10 07/17/2017 SGP‐818‐5 5 07/17/2017 SGP‐818‐10 10 07/17/2017 Maximum commercial predicted noncancer hazard index by chemical NONCANCER TOXICITY CRITERIA a Inhalation Reference Concentration (RfC) (μg/m3) Source 6.0E+01 4.0E+01 3.0E+00 8.0E+01 7.0E+02 9.8E+01 8.0E+01 1.0E+03 4.0E+02 1.0E+02 3.0E+00 2.0E+02 1.0E+03 1.0E+02 ‐‐ 4.0E+02 3.5E+01 3.0E+02 1.2E+03 USEPA, 2017b DTSC, 2017 OEHHA, 2017 DTSC, 2017 USEPA, 2017b USEPA, 2017a DTSC, 2017 USEPA, 2017b USEPA, 2017b USEPA, 2017a USEPA, 2017b DTSC, 2017 USEPA, 2017a USEPA, 2017a ‐‐ DTSC, 2017 OEHHA, 2017 OEHHA, 2017 DTSC, 2017 Page 7 of 12 Table 6 Inhalation of VOCs in Indoor Air from Soil Vapor ‐ Noncancer Hazards Sample Location Sample Depth (feet bgs) Sample Type Total Noncancer  Hazard Index b SGP‐42‐5  3PV SGP‐42‐25  3PV SGP‐51‐5  3PV SGP‐51‐25  3PV SGP‐60‐5 SGP‐60‐25 SGP‐73‐5 SGP‐73‐25 SGP‐94‐5  3PV SGP‐94‐25  3PV SGP‐101‐5  3PV SGP‐101‐25  3PV SGP‐108‐5  3PV SGP‐108‐25  3PV SGP‐126‐5  3PV SGP‐126‐25  3PV SGP‐196‐5  3PV SGP‐196‐30  3PV SGP‐202‐5  3PV SGP‐202‐25  3PV SGP‐211‐5  3PV SGP‐211‐25  3PV SGP‐223‐5 SGP‐223‐25 5 25 5 25 5 25 5 25 5 25 5 25 5 25 5 25 5 30 5 25 5 25 5 25 06/27/2017 06/27/2017 06/27/2017 06/27/2017 07/18/2017 07/18/2017 07/18/2017 07/18/2017 06/27/2017 06/27/2017 06/27/2017 06/27/2017 06/27/2017 06/27/2017 06/27/2017 06/27/2017 06/26/2017 06/26/2017 06/26/2017 06/26/2017 06/26/2017 06/26/2017 07/18/2017 07/18/2017 6.1E‐03 2.0E‐03 1.2E‐02 8.1E‐04 1.4E‐02 3.4E‐04 2.0E‐03 3.4E‐03 3.4E‐03 9.1E‐04 6.2E‐03 1.1E‐03 1.5E‐03 3.3E‐04 1.9E‐02 4.0E‐03 4.9E‐04 1.4E‐03 9.1E‐04 9.1E‐04 1.8E‐03 1.9E‐03 4.5E‐03 5.4E‐04 SGP‐253‐5  3PV SGP‐253‐22  3PV SGP‐324‐5 SGP‐324‐25 SGP‐335‐5 5 22 5 25 5 06/28/2017 06/28/2017 07/18/2017 07/18/2017 07/18/2017 1.3E‐02 4.5E‐04 8.8E‐03 5.1E‐04 8.0E‐03 Sample Name RESIDENTIAL  SGP‐42‐5 SGP‐42‐25 SGP‐51‐5 SGP‐51‐25 SGP‐60‐5 SGP‐60‐25 SGP‐73‐5 SGP‐73‐25 SGP‐94‐5 SGP‐94‐25 SGP‐101‐5 SGP‐101‐25 SGP‐108‐5 SGP‐108‐25 SGP‐126‐5 SGP‐126‐25 SGP‐196‐5 SGP‐196‐30 SGP‐202‐5 SGP‐202‐25 SGP‐211‐5 SGP‐211‐25 SGP‐223‐5 SGP‐223‐25 SGP‐253‐5 SGP‐253‐22 SGP‐324‐5 SGP‐324‐25 SGP‐335‐5 SGP‐335‐30 SGP‐342‐5 SGP‐342‐32 SGP‐352‐5 SGP‐352‐25 SGP‐699‐5 SGP‐699‐25 SGP‐711‐5 SGP‐711‐8 SGP‐735‐5 SGP‐735‐15 SGP‐745‐5 SGP‐760‐5 SGP‐760‐20 SGP‐769‐5 SGP‐769‐15 SGP‐824‐5 SGP‐825‐5 SGP‐825‐12 SGP‐335‐30 30 07/18/2017 SGP‐342‐5  3PV 5 06/27/2017 SGP‐342‐32  3PV 32 06/27/2017 SGP‐352‐5 5 07/18/2017 SGP‐352‐25 25 07/18/2017 5 06/28/2017 SGP‐699‐5  3PV 25 06/28/2017 SGP‐699‐25  3PV SGP‐711‐5  3PV 5 06/28/2017 SGP‐711‐8  3PV 8 06/28/2017 SGP‐735‐5  3PV 5 06/26/2017 SGP‐735‐15  3PV 15 06/26/2017 SGP‐745‐5  3PV 5 06/26/2017 SGP‐760‐5  3PV 5 06/26/2017 20 06/26/2017 SGP‐760‐20  3PV 5 06/26/2017 SGP‐769‐5  3PV 15 06/26/2017 SGP‐769‐15  3PV SGP‐824‐5 5 07/17/2017 SGP‐825‐5 5 07/17/2017 SGP‐825‐12 12 07/17/2017 Maximum residential predicted noncancer hazard index by chemical 4.2E‐03 3.9E‐03 2.3E‐05 5.2E‐03 1.5E‐03 1.9E‐02 3.1E‐03 4.1E‐05 0.0E+00 1.1E‐04 1.7E‐05 9.8E‐03 1.1E‐03 1.1E‐03 3.8E‐03 1.8E‐04 3.0E‐03 2.1E‐03 8.8E‐04 1.9E‐02 Note: Bolded values indicate results above a hazard index of 1. Abbreviations: ‐‐ = not available/applicable feet bgs = feet below ground surface μg/m3 = micrograms per cubic meter Footnotes: a  The noncancer toxicity criteria are from the following sources: DTSC, 2017: Department of Toxic Substances Control (DTSC), DTSC‐ Modified Screening Levels (DTSC‐SLs). June 2017. OEHHA, 2017: Office of Environmental Health Hazard Assessment (OEHHA), Toxicity Criteria Database  (http://www.oehha.ca.gov/tcdb/). Accessed July 2017. USEPA, 2017a: United States Environmental Protection Agency (USEPA), Region 9 Regional Screening Levels  (http://www.epa.gov/region9/superfund/prg/). June 2017. USEPA, 2017b: USEPA, Integrated Risk Information System (http://www.epa.gov/iris/). Accessed July 2017. b  The total noncancer hazard index for each sample is the sum of the chemical specific noncancer hazard index c  The indoor air concentrations (Cair) from Table E‐2. d  The parameters are from the following source: DTSC, 2014: Department of Toxic Substances Control (DTSC), 2014. Recommended DTSC Default Exposure Factors for Use in Risk  Assessment at California Hazardous Waste Sites and Permitted Facilities, Office of Human and Ecological Risk (HERO), HERO  Human Health Risk Assessment (HHRA) Note Number: 1, Issue Date: September 30, 2014. e  The averaging time for noncancer based on the exposure duration for each receptor (ED x 365 days/year x 24 hours/day). Equation c Noncancer Exposure Concentration (EC) (μg/m3) = (Cair x ET x EF x ED) / ATnc Noncancer Hazard Index = EC (μg/m3) / RfC (μg/m3) Parameter Exposure Frequency Residential Commercial Exposure Time Residential Commercial Exposure Duration Residential‐child Commercial Averaging Time‐Noncancer Residential‐child e Commercial Symbol Values Units Source d EFr EFc 350 250 days/year days/year DTSC, 2014 DTSC, 2014 ETr ETc 24 8 hour/day hour/day DTSC, 2014 DTSC, 2014 EDr EDc 6 25 years years DTSC, 2014 DTSC, 2014 ATnc‐r ATnc‐c 52560 219000 hours hours DTSC, 2014 DTSC, 2014 COMMERCIAL  SGP‐816‐3 SGP‐817‐5 SGP‐817‐5 SGP‐817‐10 SGP‐818‐5 SGP‐818‐10 SGP‐816‐3 3 07/17/2017 SGP‐817‐5 5 07/17/2017 SGP‐817‐5 REP 5 07/17/2017 SGP‐817‐10 10 07/17/2017 SGP‐818‐5 5 07/17/2017 SGP‐818‐10 10 07/17/2017 Maximum commercial predicted noncancer hazard index by chemical 8.2E‐04 1.7E‐04 4.4E‐04 1.5E‐04 6.1E‐04 1.7E‐04 8.2E‐04 NONCANCER TOXICITY CRITERIA a Inhalation Reference Concentration (RfC) (μg/m3) Source ‐‐ ‐‐ Page 8 of 12 Table 7 Inhalation of VOCs in Indoor Air from Soil Vapor ‐ Cancer Risks Sample Location Sample Name 1,2,4‐Trimethyl‐ 1,3,5‐Trimethyl‐ benzene benzene Bromo‐dichloro‐ Carbon disulfide methane Dibromo‐chloro‐ Ethyl‐benzene methane Sample Depth (feet bgs) Sample Type 5 25 5 25 5 25 5 25 5 25 5 25 5 25 5 25 5 30 5 25 5 25 5 25 06/27/2017 06/27/2017 06/27/2017 06/27/2017 07/18/2017 07/18/2017 07/18/2017 07/18/2017 06/27/2017 06/27/2017 06/27/2017 06/27/2017 06/27/2017 06/27/2017 06/27/2017 06/27/2017 06/26/2017 06/26/2017 06/26/2017 06/26/2017 06/26/2017 06/26/2017 07/18/2017 07/18/2017 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 7.4E‐08 3.1E‐08 2.2E‐07 1.5E‐08 1.1E‐07 ‐‐ 3.7E‐08 5.4E‐08 7.4E‐08 2.3E‐08 1.1E‐07 2.3E‐08 ‐‐ 7.7E‐09 3.7E‐07 1.0E‐07 ‐‐ 2.6E‐08 ‐‐ 1.5E‐08 ‐‐ 3.9E‐08 3.7E‐08 1.5E‐08 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 1.1E‐08 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 1.5E‐07 1.6E‐08 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ Benzene Chloroform Isopropyl‐ benzene meta‐ and para‐ Xylenes Naphthalene n‐Butyl‐benzene n‐Propyl‐ benzene ortho‐Xylene p‐Isopropyl‐ toluene sec‐Butyl‐ benzene Tetrachloro‐ ethene Toluene Trichloro‐fluoro‐ methane 3.5E‐08 8.7E‐09 5.3E‐08 3.1E‐09 8.8E‐08 ‐‐ ‐‐ 1.9E‐08 1.0E‐08 1.5E‐09 2.3E‐08 3.6E‐09 1.3E‐08 5.1E‐10 6.1E‐08 7.2E‐09 2.5E‐09 7.7E‐09 7.6E‐09 4.6E‐09 1.8E‐08 8.2E‐09 1.3E‐08 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ RESIDENTIAL SGP‐42‐5 SGP‐42‐25 SGP‐51‐5 SGP‐51‐25 SGP‐60‐5 SGP‐60‐25 SGP‐73‐5 SGP‐73‐25 SGP‐94‐5 SGP‐94‐25 SGP‐101‐5 SGP‐101‐25 SGP‐108‐5 SGP‐108‐25 SGP‐126‐5 SGP‐126‐25 SGP‐196‐5 SGP‐196‐30 SGP‐202‐5 SGP‐202‐25 SGP‐211‐5 SGP‐211‐25 SGP‐223‐5 SGP‐223‐25 SGP‐42‐5  3PV SGP‐42‐25  3PV SGP‐51‐5  3PV SGP‐51‐25  3PV SGP‐60‐5 SGP‐60‐25 SGP‐73‐5 SGP‐73‐25 SGP‐94‐5  3PV SGP‐94‐25  3PV SGP‐101‐5  3PV SGP‐101‐25  3PV SGP‐108‐5  3PV SGP‐108‐25  3PV SGP‐126‐5  3PV SGP‐126‐25  3PV SGP‐196‐5  3PV SGP‐196‐30  3PV SGP‐202‐5  3PV SGP‐202‐25  3PV SGP‐211‐5  3PV SGP‐211‐25  3PV SGP‐223‐5 SGP‐223‐25 SGP‐253‐5 SGP‐253‐5  3PV 5 06/28/2017 ‐‐ ‐‐ 2.2E‐07 ‐‐ ‐‐ ‐‐ ‐‐ 4.5E‐08 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ SGP‐253‐22 SGP‐324‐5 SGP‐324‐25 SGP‐335‐5 SGP‐335‐30 SGP‐342‐5 SGP‐342‐32 SGP‐352‐5 SGP‐352‐25 SGP‐699‐5 SGP‐699‐25 SGP‐711‐5 SGP‐711‐8 SGP‐735‐5 SGP‐735‐15 SGP‐745‐5 SGP‐760‐5 SGP‐760‐20 SGP‐769‐5 SGP‐769‐15 SGP‐824‐5 SGP‐825‐5 SGP‐825‐12 SGP‐253‐22  3PV SGP‐324‐5 SGP‐324‐25 SGP‐335‐5 SGP‐335‐30 SGP‐342‐5  3PV SGP‐342‐32  3PV SGP‐352‐5 SGP‐352‐25 SGP‐699‐5  3PV SGP‐699‐25  3PV SGP‐711‐5  3PV 22 5 25 5 30 5 32 5 25 5 25 5 06/28/2017 07/18/2017 07/18/2017 07/18/2017 07/18/2017 06/27/2017 06/27/2017 07/18/2017 07/18/2017 06/28/2017 06/28/2017 06/28/2017 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 9.6E‐09 1.1E‐07 7.7E‐09 1.5E‐07 9.0E‐08 7.4E‐08 ‐‐ 7.4E‐08 2.3E‐08 3.7E‐07 6.9E‐08 ‐‐ ‐‐ 9.1E‐07 6.9E‐08 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 1.1E‐06 1.2E‐07 ‐‐ ‐‐ ‐‐ 4.4E‐09 ‐‐ 5.3E‐09 ‐‐ ‐‐ ‐‐ ‐‐ 2.3E‐07 1.7E‐08 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 1.3E‐09 4.0E‐08 ‐‐ 2.8E‐08 1.8E‐08 1.8E‐08 ‐‐ 1.8E‐08 8.2E‐09 5.3E‐08 7.7E‐09 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ SGP‐711‐8  3PV 8 06/28/2017 SGP‐735‐5  3PV 5 06/26/2017 15 06/26/2017 SGP‐735‐15  3PV SGP‐745‐5  3PV 5 06/26/2017 5 06/26/2017 SGP‐760‐5  3PV 20 06/26/2017 SGP‐760‐20  3PV 5 06/26/2017 SGP‐769‐5  3PV 15 06/26/2017 SGP‐769‐15  3PV SGP‐824‐5 5 07/17/2017 SGP‐825‐5 5 07/17/2017 SGP‐825‐12 12 07/17/2017 Maximum residential predicted cancer risk by chemical ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 1.5E‐07 ‐‐ 1.9E‐08 7.4E‐08 ‐‐ 3.7E‐08 3.7E‐08 1.9E‐08 4.E‐07 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 9.E‐07 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 7.7E‐08 1.3E‐08 1.E‐06 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 2.E‐07 ‐‐ ‐‐ ‐‐ 4.8E‐08 1.0E‐08 6.4E‐09 1.5E‐08 1.7E‐09 1.0E‐08 ‐‐ ‐‐ 9.E‐08 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 1.5E‐09 ‐‐ ‐‐ ‐‐ 2.E‐09 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ SGP‐816‐3 3 07/17/2017 SGP‐817‐5 5 07/17/2017 SGP‐817‐5 REP 5 07/17/2017 SGP‐817‐10 10 07/17/2017 SGP‐818‐5 5 07/17/2017 SGP‐818‐10 10 07/17/2017 Maximum predicted cancer risk by chemical ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 8.5E‐09 1.5E‐09 8.5E‐09 2.2E‐09 1.3E‐08 3.3E‐09 1.E‐08 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 1.2E‐09 2.9E‐10 1.4E‐09 5.1E‐10 1.E‐09 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 1.8E‐08 2.4E‐09 ‐‐ 1.8E‐09 ‐‐ ‐‐ 2.E‐08 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ COMMERCIAL SGP‐816‐3 SGP‐817‐5 SGP‐817‐5 SGP‐817‐10 SGP‐818‐5 SGP‐818‐10 CANCER TOXICITY CRITERIA a Inhalation Unit Risk Factor (IUR) (μg/m3)‐1 ‐‐ ‐‐ 2.9E‐05 3.7E‐05 ‐‐ 2.3E‐05 2.1E‐05 2.5E‐06 ‐‐ ‐‐ 3.4E‐05 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 6.1E‐06 ‐‐ ‐‐ Source ‐‐ ‐‐ OEHHA, 2017 USEPA, 2017a ‐‐ USEPA, 2017b DTSC, 2017 OEHHA, 2017 ‐‐ ‐‐ OEHHA, 2017 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ OEHHA, 2017 ‐‐ ‐‐ Page 9 of 12 Table 7 Inhalation of VOCs in Indoor Air from Soil Vapor ‐ Cancer Risks Sample Location Sample Name Sample Depth (feet bgs) Sample Type Total Cancer Risk b 5 25 5 25 5 25 5 25 5 25 5 25 5 25 5 25 5 30 5 25 5 25 5 25 06/27/2017 06/27/2017 06/27/2017 06/27/2017 07/18/2017 07/18/2017 07/18/2017 07/18/2017 06/27/2017 06/27/2017 06/27/2017 06/27/2017 06/27/2017 06/27/2017 06/27/2017 06/27/2017 06/26/2017 06/26/2017 06/26/2017 06/26/2017 06/26/2017 06/26/2017 07/18/2017 07/18/2017 1.1E‐07 4.0E‐08 2.7E‐07 1.9E‐08 2.0E‐07 0.0E+00 3.7E‐08 8.4E‐08 8.4E‐08 2.5E‐08 1.3E‐07 2.7E‐08 1.3E‐08 8.2E‐09 4.3E‐07 1.1E‐07 2.5E‐09 3.3E‐08 7.6E‐09 2.0E‐08 1.8E‐08 4.7E‐08 2.0E‐07 3.1E‐08 RESIDENTIAL Note: Bolded values indicates results above the de minimis risk level (1x10‐6). SGP‐42‐5 SGP‐42‐25 SGP‐51‐5 SGP‐51‐25 SGP‐60‐5 SGP‐60‐25 SGP‐73‐5 SGP‐73‐25 SGP‐94‐5 SGP‐94‐25 SGP‐101‐5 SGP‐101‐25 SGP‐108‐5 SGP‐108‐25 SGP‐126‐5 SGP‐126‐25 SGP‐196‐5 SGP‐196‐30 SGP‐202‐5 SGP‐202‐25 SGP‐211‐5 SGP‐211‐25 SGP‐223‐5 SGP‐223‐25 SGP‐42‐5  3PV SGP‐42‐25  3PV SGP‐51‐5  3PV SGP‐51‐25  3PV SGP‐60‐5 SGP‐60‐25 SGP‐73‐5 SGP‐73‐25 SGP‐94‐5  3PV SGP‐94‐25  3PV SGP‐101‐5  3PV SGP‐101‐25  3PV SGP‐108‐5  3PV SGP‐108‐25  3PV SGP‐126‐5  3PV SGP‐126‐25  3PV SGP‐196‐5  3PV SGP‐196‐30  3PV SGP‐202‐5  3PV SGP‐202‐25  3PV SGP‐211‐5  3PV SGP‐211‐25  3PV SGP‐223‐5 SGP‐223‐25 SGP‐253‐5 SGP‐253‐5  3PV 5 06/28/2017 2.7E‐07 Equations c SGP‐253‐22 SGP‐324‐5 SGP‐324‐25 SGP‐335‐5 SGP‐335‐30 SGP‐342‐5 SGP‐342‐32 SGP‐352‐5 SGP‐352‐25 SGP‐699‐5 SGP‐699‐25 SGP‐711‐5 SGP‐711‐8 SGP‐735‐5 SGP‐735‐15 SGP‐745‐5 SGP‐760‐5 SGP‐760‐20 SGP‐769‐5 SGP‐769‐15 SGP‐824‐5 SGP‐825‐5 SGP‐825‐12 SGP‐253‐22  3PV SGP‐324‐5 SGP‐324‐25 SGP‐335‐5 SGP‐335‐30 SGP‐342‐5  3PV SGP‐342‐32  3PV SGP‐352‐5 SGP‐352‐25 SGP‐699‐5  3PV SGP‐699‐25  3PV SGP‐711‐5  3PV 22 5 25 5 30 5 32 5 25 5 25 5 06/28/2017 07/18/2017 07/18/2017 07/18/2017 07/18/2017 06/27/2017 06/27/2017 07/18/2017 07/18/2017 06/28/2017 06/28/2017 06/28/2017 Carcinogen Exposure Concentration (EC) Residential EC (μg/m3) = Cair x EF x ET x (EDrc + EDra) / ATc  Commercial EC (μg/m3) = Cair x EF x ET x EDc / ATc  SGP‐711‐8  3PV 8 06/28/2017 SGP‐735‐5  3PV 5 06/26/2017 15 06/26/2017 SGP‐735‐15  3PV SGP‐745‐5  3PV 5 06/26/2017 5 06/26/2017 SGP‐760‐5  3PV 20 06/26/2017 SGP‐760‐20  3PV 5 06/26/2017 SGP‐769‐5  3PV 15 06/26/2017 SGP‐769‐15  3PV SGP‐824‐5 5 07/17/2017 SGP‐825‐5 5 07/17/2017 SGP‐825‐12 12 07/17/2017 Maximum residential predicted cancer risk by chemical 1.1E‐08 2.4E‐06 2.1E‐07 1.8E‐07 1.1E‐07 9.2E‐08 4.4E‐09 9.2E‐08 3.7E‐08 4.2E‐07 7.7E‐08 0.0E+00 0.0E+00 0.0E+00 0.0E+00 2.0E‐07 1.0E‐08 2.6E‐08 8.9E‐08 3.3E‐09 4.7E‐08 1.1E‐07 3.2E‐08 2.4E‐06 SGP‐816‐3 3 07/17/2017 SGP‐817‐5 5 07/17/2017 SGP‐817‐5 REP 5 07/17/2017 SGP‐817‐10 10 07/17/2017 SGP‐818‐5 5 07/17/2017 SGP‐818‐10 10 07/17/2017 Maximum predicted cancer risk by chemical 2.6E‐08 3.8E‐09 9.6E‐09 4.3E‐09 1.4E‐08 3.8E‐09 2.6E‐08 COMMERCIAL SGP‐816‐3 SGP‐817‐5 SGP‐817‐5 SGP‐817‐10 SGP‐818‐5 SGP‐818‐10 Abbreviations: ‐‐ = not available/applicable feet bgs = feet below ground surface μg/m3 = micrograms per cubic meter Footnotes: a  The noncancer toxicity criteria are from the following sources: DTSC, 2017: Department of Toxic Substances Control (DTSC), DTSC‐ Modified Screening Levels (DTSC‐SLs). June 2017. OEHHA, 2017: Office of Environmental Health Hazard Assessment (OEHHA), Toxicity Criteria Database  (http://www.oehha.ca.gov/tcdb/). Accessed July 2017. USEPA, 2017a: United States Environmental Protection Agency (USEPA), Region 9 Regional Screening Levels  (http://www.epa.gov/region9/superfund/prg/). June 2017. USEPA, 2017b: USEPA, Integrated Risk Information System (http://www.epa.gov/iris/). Accessed July 2017. b  The total cancer risk for each sample is the sum of the chemical specific cancer risk c  The indoor air concentrations (Cair) from Table E‐2. d  The parameters are from the following source: DTSC, 2014: Department of Toxic Substances Control (DTSC), 2014. Recommended DTSC Default Exposure Factors for Use in Risk  Assessment at California Hazardous Waste Sites and Permitted Facilities, Office of Human and Ecological Risk (HERO), HERO  Human Health Risk Assessment (HHRA) Note Number: 1, Issue Date: September 30, 2014. USEPA, 2005: USEPA, 2005. Guidelines for Carcinogen Risk Assessment, Final, EPA/630/R‐03/001F, March. e  The averaging time for cancer is based on a lifetime exposure of 70 years (70 years x 365 days/year x 24 hours/day) Mutagenic Exposure Concentration (ECm) ECm (μg/m3) = Cair x ET x EF x (EDc_0‐2 x 10 + EDc_2‐16 x 3 + EDc_16‐26) / ATca  Cancer Risk / Mutagenic Cancer Risk (CR) CR = EC (μg/m3) x IUR (μg/m3)‐1 Parameter Exposure Frequency Residential Commercial Exposure Time Residential Commercial Exposure Duration Residential‐child Residential‐adult Residential‐child 0 to 2  Residential‐child 2 to 16  Residential‐adult 16 to 26 Commercial Averaging Time‐Cancer e Symbol Values Units Source d EFr EFc 350 250 days/year days/year DTSC, 2014 DTSC, 2014 ETr ETc 24 8 hour/day hour/day DTSC, 2014 DTSC, 2014 EDrc EDra EDrc_0‐2 EDrc_2‐16 EDra_16‐26 EDc 6 20 2 14 10 25 years years years years years years DTSC, 2014 DTSC, 2014 USEPA, 2005 USEPA, 2005 USEPA, 2005 USEPA, 2005 ATc 613200 hours DTSC, 2014 CANCER TOXICITY CRITERIA a Inhalation Unit Risk Factor (IUR) (μg/m3)‐1 ‐‐ Source ‐‐ Page 10 of 12 Table 8 Inhalation of VOCs in Ambient Air from Soil Vapor Maximum  Concentration Chemical of Potential  Concern Ambient Air a Caa 3 (μg/m ) Averaged Air  Concentration Inhalation Chronic Reference  Concentration b RfC Hazard Quotient Lifetime Air  Concentration Incremental  Cancer Risk Inhalation Unit Risk Factor b AAC (μg/m3) (μg/m3) Source HQ (unitless) LAC (μg/m3) (μg/m3)‐1 IUR Source CR (unitless) 2.2E‐03 8.2E‐04 4.1E‐04 7.4E‐04 4.3E‐04 1.5E‐03 3.2E‐04 1.1E‐03 8.2E‐05 3.7E‐03 4.8E‐05 3.6E‐04 1.5E‐03 1.7E‐04 2.4E‐05 7.7E‐06 2.5E‐03 6.0E‐05 6.0E+01 4.0E+01 3.0E+00 8.0E+01 7.0E+02 9.8E+01 8.0E+01 1.0E+03 4.0E+02 1.0E+02 2.0E+02 1.0E+03 1.0E+02 ‐‐ 4.0E+02 3.5E+01 3.0E+02 1.2E+03 USEPA, 2017b DTSC, 2017 OEHHA, 2017 DTSC, 2017 USEPA, 2017b USEPA, 2017a DTSC, 2017 USEPA, 2017b USEPA, 2017b USEPA, 2017a DTSC, 2017 USEPA, 2017a USEPA, 2017a ‐‐ DTSC, 2017 OEHHA, 2017 OEHHA, 2017 DTSC, 2017 3.7E‐05 2.1E‐05 1.4E‐04 9.3E‐06 6.2E‐07 1.5E‐05 4.0E‐06 1.1E‐06 2.1E‐07 3.7E‐05 2.4E‐07 3.6E‐07 1.5E‐05 NA 6.0E‐08 2.2E‐07 8.3E‐06 5.0E‐08 8.2E‐04 3.1E‐04 1.5E‐04 2.8E‐04 1.6E‐04 5.6E‐04 1.2E‐04 4.1E‐04 3.1E‐05 1.4E‐03 1.8E‐05 1.3E‐04 5.5E‐04 6.2E‐05 8.9E‐06 2.8E‐06 9.2E‐04 2.2E‐05 ‐‐ ‐‐ 2.9E‐05 3.7E‐05 ‐‐ 2.3E‐05 2.1E‐05 2.5E‐06 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 6.1E‐06 ‐‐ ‐‐ ‐‐ ‐‐ OEHHA, 2017 USEPA, 2017a ‐‐ USEPA, 2017b DTSC, 2017 OEHHA, 2017 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ OEHHA, 2017 ‐‐ ‐‐ NA NA 4.4E‐09 1.0E‐08 NA 1.3E‐08 2.5E‐09 1.0E‐09 NA NA NA NA NA NA NA 1.7E‐11 NA NA Residential 1,2,4‐Trimethylbenzene 1,3,5‐Trimethylbenzene Benzene Bromodichloromethane Carbon disulfide Chloroform Dibromochloromethane Ethylbenzene Isopropylbenzene meta‐ and para‐Xylenes n‐Butylbenzene n‐Propylbenzene ortho‐Xylene p‐Isopropyltoluene sec‐Butylbenzene Tetrachloroethene Toluene Trichlorofluoromethane 2.3E‐03 8.6E‐04 4.3E‐04 7.8E‐04 4.5E‐04 1.6E‐03 3.3E‐04 1.1E‐03 8.6E‐05 3.9E‐03 5.0E‐05 3.7E‐04 1.5E‐03 1.8E‐04 2.5E‐05 8.0E‐06 2.6E‐03 6.2E‐05 c Total Noncancer Hazard Index   = d 2.9E‐04 Total Lifetime Cancer Risk   = 3.1E‐08 Commercial 1,2,4‐Trimethylbenzene Benzene Ethylbenzene meta‐ and para‐Xylenes Naphthalene ortho‐Xylene Toluene 3.3E‐04 9.2E‐05 1.2E‐04 5.4E‐04 1.7E‐04 2.6E‐04 3.7E‐04 7.6E‐05 2.1E‐05 2.7E‐05 1.2E‐04 3.9E‐05 5.9E‐05 8.5E‐05 6.0E+01 3.0E+00 1.0E+03 1.0E+02 3.0E+00 1.0E+02 3.0E+02 USEPA, 2017b OEHHA, 2017 USEPA, 2017b USEPA, 2017a USEPA, 2017b USEPA, 2017a OEHHA, 2017 c Total Noncancer Hazard Index   = Page 11 of 12 1.3E‐06 7.0E‐06 2.7E‐08 1.2E‐06 1.3E‐05 5.9E‐07 2.8E‐07 2.3E‐05 2.7E‐05 7.5E‐06 9.5E‐06 4.4E‐05 1.4E‐05 2.1E‐05 3.0E‐05 ‐‐ 2.9E‐05 2.5E‐06 ‐‐ 3.4E‐05 ‐‐ ‐‐ ‐‐ OEHHA, 2017 OEHHA, 2017 ‐‐ OEHHA, 2017 ‐‐ ‐‐ Total Lifetime Cancer Risk  d = NA 2.2E‐10 2.4E‐11 NA 4.8E‐10 NA NA 7.2E‐10 Table 8 Inhalation of VOCs in Ambient Air from Soil Vapor Equations Abbreviations: ‐‐ = not available Noncancer  e Averaged Air Concentration (AAC) AAC = (Caa x ET x EF x ED) / Atnc Hazard Quotient (HQ) HQ = AAC / RfC Cancer Lifetime Air Concentration (LAC) Excess Cancer Risk (CR) CR = LAC x IUR LAC = (Caa x ET x EF x ED) / Atc EDmutagenic = (ED5‐16 x 3) + (ED16‐18 x 1) Parameter Exposure Frequency Resident Commercial Exposure Time Resident Commercial Exposure Duration Resident‐child Resident‐adult Commercial Averaging Time ‐ Cancer g Averaging Time ‐ Noncancer  Resident Commercial Symbol Value Units Source f EFr EFc 350 250 days/year days/year DTSC, 2014 DTSC, 2014 ETr ETc 24 8 hours/day hours/day DTSC, 2014 DTSC, 2014 EDrc 6 year DTSC, 2014 EDra EDc 20 25 year year DTSC, 2014 DTSC, 2014 ATc 613200 hours DTSC, 2014 ATnc‐r ATnc‐c 52560 219000 hours hours DTSC, 2014 DTSC, 2014 mg/m3 = milligrams per meters cubed NA = not applicable μg/m3 = micrograms per meters cubed μg/mg = micrograms per milligrams Footnotes: From Table 1. b The RfC and IUR criteria are from the following sources: DTSC, 2017: Department of Toxic Substances Control (DTSC), DTSC‐ Modified  Screening Levels (DTSC‐SLs). June 2017. OEHHA, 2017: Office of Environmental Health Hazard Assessment (OEHHA),  a Toxicity Criteria Database. Accessed July 2017. (http://www.oehha.ca.gov/tcdb/) USEPA, 2017a: United States Environmental Protection Agency (USEPA), Region  9 Regional Screening Levels. June 2017. (http://www.epa.gov/region9/superfund/prg/) USEPA, 2017b: USEPA, Integrated Risk Information System. Accessed July 2017. (http://www.epa.gov/iris/) c  The total noncancer Hazard Index is the sum of the chemical‐specific noncancer  hazard quotients.  d  The total lifetime cancer risk is the sum of the incremental cancer risks. e  The noncancer AAC for the residential receptor is based on the child. f h The parameters are from the following source: DTSC, 2014: Department of Toxic Substances Control (DTSC), 2014. Recommended  DTSC Default Exposure Factors for Use in Risk Assessment at California  Hazardous Waste Sites and Permitted Facilities, Office of Human and Ecological  Risk (HERO), HERO Human Health Risk Assessment (HHRA) Note Number: 1,  Issue Date: September 30, 2014. g The averaging time for cancer is based on a lifetime exposure of 70 years  (70 years x 365 days/year x 24 hours/day). h Page 12 of 12 The averaging time for noncancer based on the exposure duration for each  receptor (ED x 365 days/year x 24 hours/day). .OIZMOZ >20 min?26.5 This page intentionally left blank Attachment A - 5 Feet Below Ground Surface USEPA SG-SCREEN Version 2.0, 04/2003 Department of Toxic Substances Control Vapor Intrusion Screening Model - Soil Gas DTSC Modification December 2014 TRC Modification June 2017 Scenario: Commercial DATA ENTRY SHEET Soil Gas Concentration Data Reset to Defaults ENTER Chemical CAS No. ENTER Soil gas conc., OR ENTER Soil gas conc., (numbers only, Cg Cg no dashes) (g/m3) (ppmv) Chemical Attenuation Factor (unitless) 1,2,4-Trimethylbenzene 1,3,5-Trimethylbenzene Benzene Bromodichloromethane Carbon disulfide Chloroform Dibromochloromethane Ethylbenzene Cumene (Isopropylbenzene) m-Xylene Naphthalene n-Butylbenzene n-Propylbenzene o-Xylene p-Isopropyltoluene sec-Butylbenzene Tetrachloroethylene Toluene Trichlorofluoromethane 95636 108678 71432 75274 75150 67663 124481 100414 98828 108383 91203 104518 103651 95476 99876 135988 127184 108883 75694 MORE  MORE  ENTER Depth below grade to bottom of enclosed space floor, LF ENTER ENTER ENTER ENTER Soil gas sampling depth below grade, Ls Average soil temperature, TS Vadose zone SCS soil type (used to estimate soil vapor User-defined vadose zone soil vapor permeability, kv (15 or 200 cm) (cm) (oC) permeability) 15 152.4 24 LS ENTER Vandose zone SCS soil type ENTER Vadose zone soil dry bulk density, ENTER Vadose zone soil total porosity, ENTER Vadose zone soil water-filled porosity, Lookup Receptor Parameters NEW=> (cm2) ENTER Average vapor flow rate into bldg. (Leave blank to calculate) bA nV wV Qsoil (g/cm3) (unitless) (cm3/cm3) (L/m) LS 1.62 0.39 0.21 5 ENTER Averaging time for carcinogens, ATC ENTER Averaging time for noncarcinogens, ATNC ENTER ENTER ENTER ENTER Exposure duration, ED Exposure frequency, EF Exposure Time ET Air Exchange Rate ACH (yrs) (yrs) (yrs) (days/yr) (hrs/day) (hour)-1 70 25 25 250 8 (NEW) 1 (NEW) Lookup Soil Parameters MORE  OR Commercial 1.3E‐04 1.3E‐04 1.8E‐04 1.2E‐04 2.1E‐04 1.6E‐04 8.1E‐05 1.4E‐04 1.3E‐04 1.4E‐04 1.3E‐04 1.1E‐04 1.3E‐04 1.4E‐04 1.1E‐04 1.1E‐04 1.1E‐04 1.6E‐04 1.4E‐04 END Last Update: December 2014 DTSC Human and Ecological Risk Office DTSC Vapor Intrusion Screening Model Soil Gas DATENTER Page 1 of 4 Attachment A - 5 Feet Below Ground Surface CHEMICAL PROPERTIES SHEET Scenario: Commercial Diffusivity in air, Da Diffusivity in water, Dw Henry's law constant at reference temperature, H Henry's law constant reference temperature, TR Enthalpy of vaporization at the normal boiling point, Hv,b Normal boiling point, TB Critical temperature, TC Unit risk factor, URF Reference conc., RfC Molecular weight, MW (cm2/s) (cm2/s) (atm-m3/mol) (oC) (cal/mol) (oK) (oK) (g/m3)-1 (mg/m3) (g/mol) Chemical: 6.07E-02 6.02E-02 8.95E-02 5.63E-02 1.06E-01 7.69E-02 3.66E-02 6.85E-02 6.03E-02 6.84E-02 6.05E-02 5.28E-02 6.02E-02 6.89E-02 5.27E-02 5.28E-02 5.05E-02 7.78E-02 6.54E-02 7.92E-06 7.84E-06 1.03E-05 1.07E-05 1.30E-05 1.09E-05 1.06E-05 8.46E-06 7.86E-06 8.44E-06 8.38E-06 7.33E-06 7.83E-06 8.53E-06 7.32E-06 7.34E-06 9.46E-06 9.20E-06 1.00E-05 6.16E-03 8.77E-03 5.55E-03 2.12E-03 1.44E-02 3.67E-03 7.83E-04 7.88E-03 1.15E-02 7.18E-03 4.40E-04 1.59E-02 1.05E-02 5.18E-03 1.10E-02 1.76E-02 1.77E-02 6.64E-03 9.70E-02 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 9,369 9,321 7,342 7,800 6,391 6,988 5,900 8,501 10,335 8,523 10,373 9,290 9,123 8,661 0 88,730 8,288 7,930 5,999 442.30 437.89 353.24 363.15 319.00 334.32 416.14 409.34 425.56 412.27 491.14 456.46 432.20 417.60 450.15 446.50 394.40 383.78 296.70 649.17 637.25 562.16 585.85 552.00 536.40 678.20 617.20 631.10 617.05 748.40 660.50 630.00 630.30 652.00 679.00 620.20 591.79 471.00 0.0E+00 0.0E+00 2.9E-05 3.7E-05 0.0E+00 2.3E-05 2.7E-05 2.5E-06 0.0E+00 0.0E+00 3.4E-05 0.0E+00 0.0E+00 0.0E+00 0.0E+00 0.0E+00 6.1E-06 0.0E+00 0.0E+00 6.0E-02 6.0E-02 3.0E-03 8.0E-02 7.0E-01 9.8E-02 7.0E-02 1.0E+00 4.0E-01 1.0E-01 3.0E-03 2.0E-01 1.0E+00 1.0E-01 0.0E+00 4.0E-01 3.5E-02 5.0E+00 7.0E-01 120.20 120.20 78.11 163.83 76.13 119.38 208.28 106.17 120.19 106.17 128.18 134.22 120.19 106.17 134.20 134.22 165.83 92.14 137.36 1,2,4-Trimethylbenzene 1,3,5-Trimethylbenzene Benzene Bromodichloromethane Carbon disulfide Chloroform Dibromochloromethane Ethylbenzene Cumene (Isopropylbenzene) m-Xylene Naphthalene n-Butylbenzene n-Propylbenzene o-Xylene p-Isopropyltoluene sec-Butylbenzene Tetrachloroethylene Toluene Trichlorofluoromethane END Last Update: December 2014 DTSC Human and Ecological Risk Office DTSC Vapor Intrusion Screening Model Soil Gas CHEMPROPS Page 2 of 4 Attachment A - 5 Feet Below Ground Surface INTERMEDIATE CALCULATIONS SHEET Scenario: Sourcebuilding separation, LT Vadose zone Vadose zone soil effective air-filled total fluid porosity, saturation, a 3 V Vadose zone soil intrinsic permeability, Vadose zone soil relative air permeability, Vadose zone soil effective vapor permeability, Floorwall seam perimeter, Soil gas Commercial Bldg. ventilation rate, Ste ki krg kv Xcrack conc. Qbuilding (cm) 3 (cm /cm ) (cm3/cm 3) (cm2) (cm2) (cm2) (cm) (g/m 3) 3 (cm /s) 137.4 137.4 137.4 137.4 137.4 137.4 137.4 137.4 137.4 137.4 137.4 137.4 137.4 137.4 137.4 137.4 137.4 137.4 137.4 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 6.78E+04 6.78E+04 6.78E+04 6.78E+04 6.78E+04 6.78E+04 6.78E+04 6.78E+04 6.78E+04 6.78E+04 6.78E+04 6.78E+04 6.78E+04 6.78E+04 6.78E+04 6.78E+04 6.78E+04 6.78E+04 6.78E+04 Area of enclosed space below grade, Crackto-total area ratio, Crack depth below grade, Enthalpy of vaporization at ave. soil temperature, Henry's law constant at ave. soil temperature, Henry's law constant at ave. soil temperature, Vapor viscosity at ave. soil temperature, Vadose zone effective diffusion coefficient, Diffusion path length, AB  Zcrack Hv,TS HTS H'TS TS Deff V Ld (cm2) (unitless) (cm) (cal/mol) (atm-m3/mol) (unitless) (g/cm-s) (cm2/s) (cm) 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 11,516 11,495 7,977 8,526 6,572 7,407 6,696 9,994 12,447 10,090 12,768 11,671 11,186 10,245 0 106,642 9,410 9,001 5,993 5.77E-03 8.22E-03 5.30E-03 2.02E-03 1.39E-02 3.52E-03 7.54E-04 7.45E-03 1.07E-02 6.78E-03 4.09E-04 1.49E-02 9.85E-03 4.89E-03 1.10E-02 9.60E-03 1.68E-02 6.31E-03 9.38E-02 2.37E-01 3.37E-01 2.18E-01 8.28E-02 5.69E-01 1.44E-01 3.09E-02 3.05E-01 4.39E-01 2.78E-01 1.68E-02 6.10E-01 4.04E-01 2.00E-01 4.51E-01 3.94E-01 6.88E-01 2.59E-01 3.84E+00 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.32E-03 1.31E-03 1.95E-03 1.23E-03 2.32E-03 1.68E-03 8.10E-04 1.49E-03 1.31E-03 1.49E-03 1.34E-03 1.15E-03 1.31E-03 1.50E-03 1.15E-03 1.15E-03 1.10E-03 1.70E-03 1.42E-03 137.4 137.4 137.4 137.4 137.4 137.4 137.4 137.4 137.4 137.4 137.4 137.4 137.4 137.4 137.4 137.4 137.4 137.4 137.4 Last Update: December 2014 DTSC Human and Ecological Risk Office DTSC Vapor Intrusion Screening Model Soil Gas Chemical: 1,2,4-Trimethylbenzene 1,3,5-Trimethylbenzene Benzene Bromodichloromethane Carbon disulfide Chloroform Dibromochloromethane Ethylbenzene Cumene (Isopropylbenzene) m-Xylene Naphthalene n-Butylbenzene n-Propylbenzene o-Xylene p-Isopropyltoluene sec-Butylbenzene Tetrachloroethylene Toluene Trichlorofluoromethane Chemical: 1,2,4-Trimethylbenzene 1,3,5-Trimethylbenzene Benzene Bromodichloromethane Carbon disulfide Chloroform Dibromochloromethane Ethylbenzene Cumene (Isopropylbenzene) m-Xylene Naphthalene n-Butylbenzene n-Propylbenzene o-Xylene p-Isopropyltoluene sec-Butylbenzene Tetrachloroethylene Toluene Trichlorofluoromethane INTERCALCS Page 3 of 4 Attachment A - 5 Feet Below Ground Surface INTERMEDIATE CALCULATIONS SHEET Lp Csource rcrack Qsoil Crack effective diffusion coefficient, Dcrack Acrack Exponent of equivalent foundation Peclet number, exp(Pef)  Cbuilding (cm) 3 (g/m ) (cm) 3 (cm /s) (cm2/s) (cm2) (unitless) (unitless) (g/m 3) 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 1.32E-03 1.31E-03 1.95E-03 1.23E-03 2.32E-03 1.68E-03 8.10E-04 1.49E-03 1.31E-03 1.49E-03 1.34E-03 1.15E-03 1.31E-03 1.50E-03 1.15E-03 1.15E-03 1.10E-03 1.70E-03 1.42E-03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.48E+54 1.46E+55 1.24E+37 7.24E+58 1.65E+31 1.40E+43 2.20E+89 3.33E+48 1.26E+55 3.89E+48 1.59E+54 9.31E+62 1.71E+55 1.53E+48 1.12E+63 8.62E+62 6.96E+65 4.94E+42 7.27E+50 1.27E-04 1.26E-04 1.79E-04 1.19E-04 2.07E-04 1.57E-04 8.12E-05 1.42E-04 1.27E-04 1.42E-04 1.28E-04 1.12E-04 1.26E-04 1.43E-04 1.12E-04 1.12E-04 1.08E-04 1.59E-04 1.36E-04 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Convection path length, Source vapor conc., Crack radius, Average vapor flow rate into bldg., Area of crack, Infinite source indoor attenuation coefficient, Infinite source bldg. conc., Chemical: 1,2,4-Trimethylbenzene 1,3,5-Trimethylbenzene Benzene Bromodichloromethane Carbon disulfide Chloroform Dibromochloromethane Ethylbenzene Cumene (Isopropylbenzene) m-Xylene Naphthalene n-Butylbenzene n-Propylbenzene o-Xylene p-Isopropyltoluene sec-Butylbenzene Tetrachloroethylene Toluene Trichlorofluoromethane END Last Update: December 2014 DTSC Human and Ecological Risk Office DTSC Vapor Intrusion Screening Model Soil Gas INTERCALCS Page 4 of 4 Attachment A - 10 Feet Below Ground Surface USEPA SG-SCREEN Version 2.0, 04/2003 Department of Toxic Substances Control Vapor Intrusion Screening Model - Soil Gas DTSC Modification December 2014 TRC Modification June 2017 Scenario: Commercial DATA ENTRY SHEET Soil Gas Concentration Data Reset to Defaults ENTER Chemical CAS No. ENTER Soil gas conc., OR ENTER Soil gas conc., (numbers only, Cg Cg no dashes) (g/m3) (ppmv) Chemical Attenuation Factor (unitless) 1,2,4-Trimethylbenzene 1,3,5-Trimethylbenzene Benzene Bromodichloromethane Carbon disulfide Chloroform Dibromochloromethane Ethylbenzene Cumene (Isopropylbenzene) m-Xylene Naphthalene n-Butylbenzene n-Propylbenzene o-Xylene p-Isopropyltoluene sec-Butylbenzene Tetrachloroethylene Toluene Trichlorofluoromethane 95636 108678 71432 75274 75150 67663 124481 100414 98828 108383 91203 104518 103651 95476 99876 135988 127184 108883 75694 MORE  MORE  ENTER Depth below grade to bottom of enclosed space floor, LF ENTER ENTER ENTER ENTER Soil gas sampling depth below grade, Ls Average soil temperature, TS Vadose zone SCS soil type (used to estimate soil vapor User-defined vadose zone soil vapor permeability, kv (15 or 200 cm) (cm) (oC) permeability) 15 304.8 24 LS ENTER Vandose zone SCS soil type ENTER Vadose zone soil dry bulk density, ENTER Vadose zone soil total porosity, ENTER Vadose zone soil water-filled porosity, Lookup Receptor Parameters NEW=> (cm2) ENTER Average vapor flow rate into bldg. (Leave blank to calculate) bA nV wV Qsoil (g/cm3) (unitless) (cm3/cm3) (L/m) LS 1.62 0.39 0.21 5 ENTER Averaging time for carcinogens, ATC ENTER Averaging time for noncarcinogens, ATNC ENTER ENTER ENTER ENTER Exposure duration, ED Exposure frequency, EF Exposure Time ET Air Exchange Rate ACH (yrs) (yrs) (yrs) (days/yr) (hrs/day) (hour)-1 70 25 25 250 8 (NEW) 1 (NEW) Lookup Soil Parameters MORE  OR Commercial 6.4E‐05 6.3E‐05 9.2E‐05 6.0E‐05 1.1E‐04 8.0E‐05 4.0E‐05 7.2E‐05 6.3E‐05 7.1E‐05 6.4E‐05 5.6E‐05 6.3E‐05 7.2E‐05 5.6E‐05 5.6E‐05 5.4E‐05 8.1E‐05 6.8E‐05 END Last Update: December 2014 DTSC Human and Ecological Risk Office DTSC Vapor Intrusion Screening Model Soil Gas DATENTER Page 1 of 4 Attachment A - 10 Feet Below Ground Surface CHEMICAL PROPERTIES SHEET Scenario: Commercial Diffusivity in air, Da Diffusivity in water, Dw Henry's law constant at reference temperature, H Henry's law constant reference temperature, TR Enthalpy of vaporization at the normal boiling point, Hv,b Normal boiling point, TB Critical temperature, TC Unit risk factor, URF Reference conc., RfC Molecular weight, MW (cm2/s) (cm2/s) (atm-m3/mol) (oC) (cal/mol) (oK) (oK) (g/m3)-1 (mg/m3) (g/mol) Chemical: 6.07E-02 6.02E-02 8.95E-02 5.63E-02 1.06E-01 7.69E-02 3.66E-02 6.85E-02 6.03E-02 6.84E-02 6.05E-02 5.28E-02 6.02E-02 6.89E-02 5.27E-02 5.28E-02 5.05E-02 7.78E-02 6.54E-02 7.92E-06 7.84E-06 1.03E-05 1.07E-05 1.30E-05 1.09E-05 1.06E-05 8.46E-06 7.86E-06 8.44E-06 8.38E-06 7.33E-06 7.83E-06 8.53E-06 7.32E-06 7.34E-06 9.46E-06 9.20E-06 1.00E-05 6.16E-03 8.77E-03 5.55E-03 2.12E-03 1.44E-02 3.67E-03 7.83E-04 7.88E-03 1.15E-02 7.18E-03 4.40E-04 1.59E-02 1.05E-02 5.18E-03 1.10E-02 1.76E-02 1.77E-02 6.64E-03 9.70E-02 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 9,369 9,321 7,342 7,800 6,391 6,988 5,900 8,501 10,335 8,523 10,373 9,290 9,123 8,661 0 88,730 8,288 7,930 5,999 442.30 437.89 353.24 363.15 319.00 334.32 416.14 409.34 425.56 412.27 491.14 456.46 432.20 417.60 450.15 446.50 394.40 383.78 296.70 649.17 637.25 562.16 585.85 552.00 536.40 678.20 617.20 631.10 617.05 748.40 660.50 630.00 630.30 652.00 679.00 620.20 591.79 471.00 0.0E+00 0.0E+00 2.9E-05 3.7E-05 0.0E+00 2.3E-05 2.7E-05 2.5E-06 0.0E+00 0.0E+00 3.4E-05 0.0E+00 0.0E+00 0.0E+00 0.0E+00 0.0E+00 6.1E-06 0.0E+00 0.0E+00 6.0E-02 6.0E-02 3.0E-03 8.0E-02 7.0E-01 9.8E-02 7.0E-02 1.0E+00 4.0E-01 1.0E-01 3.0E-03 2.0E-01 1.0E+00 1.0E-01 0.0E+00 4.0E-01 3.5E-02 5.0E+00 7.0E-01 120.20 120.20 78.11 163.83 76.13 119.38 208.28 106.17 120.19 106.17 128.18 134.22 120.19 106.17 134.20 134.22 165.83 92.14 137.36 1,2,4-Trimethylbenzene 1,3,5-Trimethylbenzene Benzene Bromodichloromethane Carbon disulfide Chloroform Dibromochloromethane Ethylbenzene Cumene (Isopropylbenzene) m-Xylene Naphthalene n-Butylbenzene n-Propylbenzene o-Xylene p-Isopropyltoluene sec-Butylbenzene Tetrachloroethylene Toluene Trichlorofluoromethane END Last Update: December 2014 DTSC Human and Ecological Risk Office DTSC Vapor Intrusion Screening Model Soil Gas CHEMPROPS Page 2 of 4 Attachment A - 10 Feet Below Ground Surface INTERMEDIATE CALCULATIONS SHEET Scenario: Sourcebuilding separation, LT Vadose zone Vadose zone soil effective air-filled total fluid porosity, saturation, a 3 V Vadose zone soil intrinsic permeability, Vadose zone soil relative air permeability, Vadose zone soil effective vapor permeability, Floorwall seam perimeter, Soil gas Commercial Bldg. ventilation rate, Ste ki krg kv Xcrack conc. Qbuilding (cm) 3 (cm /cm ) (cm3/cm 3) (cm2) (cm2) (cm2) (cm) (g/m 3) 3 (cm /s) 289.8 289.8 289.8 289.8 289.8 289.8 289.8 289.8 289.8 289.8 289.8 289.8 289.8 289.8 289.8 289.8 289.8 289.8 289.8 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 6.78E+04 6.78E+04 6.78E+04 6.78E+04 6.78E+04 6.78E+04 6.78E+04 6.78E+04 6.78E+04 6.78E+04 6.78E+04 6.78E+04 6.78E+04 6.78E+04 6.78E+04 6.78E+04 6.78E+04 6.78E+04 6.78E+04 Area of enclosed space below grade, Crackto-total area ratio, Crack depth below grade, Enthalpy of vaporization at ave. soil temperature, Henry's law constant at ave. soil temperature, Henry's law constant at ave. soil temperature, Vapor viscosity at ave. soil temperature, Vadose zone effective diffusion coefficient, Diffusion path length, AB  Zcrack Hv,TS HTS H'TS TS Deff V Ld (cm2) (unitless) (cm) (cal/mol) (atm-m3/mol) (unitless) (g/cm-s) (cm2/s) (cm) 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 11,516 11,495 7,977 8,526 6,572 7,407 6,696 9,994 12,447 10,090 12,768 11,671 11,186 10,245 0 106,642 9,410 9,001 5,993 5.77E-03 8.22E-03 5.30E-03 2.02E-03 1.39E-02 3.52E-03 7.54E-04 7.45E-03 1.07E-02 6.78E-03 4.09E-04 1.49E-02 9.85E-03 4.89E-03 1.10E-02 9.60E-03 1.68E-02 6.31E-03 9.38E-02 2.37E-01 3.37E-01 2.18E-01 8.28E-02 5.69E-01 1.44E-01 3.09E-02 3.05E-01 4.39E-01 2.78E-01 1.68E-02 6.10E-01 4.04E-01 2.00E-01 4.51E-01 3.94E-01 6.88E-01 2.59E-01 3.84E+00 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.32E-03 1.31E-03 1.95E-03 1.23E-03 2.32E-03 1.68E-03 8.10E-04 1.49E-03 1.31E-03 1.49E-03 1.34E-03 1.15E-03 1.31E-03 1.50E-03 1.15E-03 1.15E-03 1.10E-03 1.70E-03 1.42E-03 289.8 289.8 289.8 289.8 289.8 289.8 289.8 289.8 289.8 289.8 289.8 289.8 289.8 289.8 289.8 289.8 289.8 289.8 289.8 Last Update: December 2014 DTSC Human and Ecological Risk Office DTSC Vapor Intrusion Screening Model Soil Gas Chemical: 1,2,4-Trimethylbenzene 1,3,5-Trimethylbenzene Benzene Bromodichloromethane Carbon disulfide Chloroform Dibromochloromethane Ethylbenzene Cumene (Isopropylbenzene) m-Xylene Naphthalene n-Butylbenzene n-Propylbenzene o-Xylene p-Isopropyltoluene sec-Butylbenzene Tetrachloroethylene Toluene Trichlorofluoromethane Chemical: 1,2,4-Trimethylbenzene 1,3,5-Trimethylbenzene Benzene Bromodichloromethane Carbon disulfide Chloroform Dibromochloromethane Ethylbenzene Cumene (Isopropylbenzene) m-Xylene Naphthalene n-Butylbenzene n-Propylbenzene o-Xylene p-Isopropyltoluene sec-Butylbenzene Tetrachloroethylene Toluene Trichlorofluoromethane INTERCALCS Page 3 of 4 Attachment A - 10 Feet Below Ground Surface INTERMEDIATE CALCULATIONS SHEET Lp Csource rcrack Qsoil Crack effective diffusion coefficient, Dcrack Acrack Exponent of equivalent foundation Peclet number, exp(Pef)  Cbuilding (cm) 3 (g/m ) (cm) 3 (cm /s) (cm2/s) (cm2) (unitless) (unitless) (g/m 3) 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 1.32E-03 1.31E-03 1.95E-03 1.23E-03 2.32E-03 1.68E-03 8.10E-04 1.49E-03 1.31E-03 1.49E-03 1.34E-03 1.15E-03 1.31E-03 1.50E-03 1.15E-03 1.15E-03 1.10E-03 1.70E-03 1.42E-03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.48E+54 1.46E+55 1.24E+37 7.24E+58 1.65E+31 1.40E+43 2.20E+89 3.33E+48 1.26E+55 3.89E+48 1.59E+54 9.31E+62 1.71E+55 1.53E+48 1.12E+63 8.62E+62 6.96E+65 4.94E+42 7.27E+50 6.38E-05 6.34E-05 9.19E-05 5.96E-05 1.08E-04 7.99E-05 3.99E-05 7.15E-05 6.34E-05 7.14E-05 6.44E-05 5.59E-05 6.33E-05 7.20E-05 5.58E-05 5.59E-05 5.35E-05 8.07E-05 6.84E-05 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Convection path length, Source vapor conc., Crack radius, Average vapor flow rate into bldg., Area of crack, Infinite source indoor attenuation coefficient, Infinite source bldg. conc., Chemical: 1,2,4-Trimethylbenzene 1,3,5-Trimethylbenzene Benzene Bromodichloromethane Carbon disulfide Chloroform Dibromochloromethane Ethylbenzene Cumene (Isopropylbenzene) m-Xylene Naphthalene n-Butylbenzene n-Propylbenzene o-Xylene p-Isopropyltoluene sec-Butylbenzene Tetrachloroethylene Toluene Trichlorofluoromethane END Last Update: December 2014 DTSC Human and Ecological Risk Office DTSC Vapor Intrusion Screening Model Soil Gas INTERCALCS Page 4 of 4 Attachment A - 15 Feet Below Ground Surface USEPA SG-SCREEN Version 2.0, 04/2003 Department of Toxic Substances Control Vapor Intrusion Screening Model - Soil Gas DTSC Modification December 2014 TRC Modification June 2017 Scenario: Commercial DATA ENTRY SHEET Soil Gas Concentration Data Reset to Defaults ENTER Chemical CAS No. ENTER Soil gas conc., OR ENTER Soil gas conc., (numbers only, Cg Cg no dashes) (g/m3) (ppmv) Chemical Attenuation Factor (unitless) 1,2,4-Trimethylbenzene 1,3,5-Trimethylbenzene Benzene Bromodichloromethane Carbon disulfide Chloroform Dibromochloromethane Ethylbenzene Cumene (Isopropylbenzene) m-Xylene Naphthalene n-Butylbenzene n-Propylbenzene o-Xylene p-Isopropyltoluene sec-Butylbenzene Tetrachloroethylene Toluene Trichlorofluoromethane 95636 108678 71432 75274 75150 67663 124481 100414 98828 108383 91203 104518 103651 95476 99876 135988 127184 108883 75694 MORE  MORE  ENTER Depth below grade to bottom of enclosed space floor, LF ENTER ENTER ENTER ENTER Soil gas sampling depth below grade, Ls Average soil temperature, TS Vadose zone SCS soil type (used to estimate soil vapor User-defined vadose zone soil vapor permeability, kv (15 or 200 cm) (cm) (oC) permeability) 15 457.2 24 LS ENTER Vandose zone SCS soil type ENTER Vadose zone soil dry bulk density, ENTER Vadose zone soil total porosity, ENTER Vadose zone soil water-filled porosity, Lookup Receptor Parameters NEW=> (cm2) ENTER Average vapor flow rate into bldg. (Leave blank to calculate) bA nV wV Qsoil (g/cm3) (unitless) (cm3/cm3) (L/m) LS 1.62 0.39 0.21 5 ENTER Averaging time for carcinogens, ATC ENTER Averaging time for noncarcinogens, ATNC ENTER ENTER ENTER ENTER Exposure duration, ED Exposure frequency, EF Exposure Time ET Air Exchange Rate ACH (yrs) (yrs) (yrs) (days/yr) (hrs/day) (hour)-1 70 25 25 250 8 (NEW) 1 (NEW) Lookup Soil Parameters MORE  OR Commercial 4.3E‐05 4.2E‐05 6.2E‐05 4.0E‐05 7.3E‐05 5.4E‐05 2.6E‐05 4.8E‐05 4.2E‐05 4.8E‐05 4.3E‐05 3.7E‐05 4.2E‐05 4.8E‐05 3.7E‐05 3.7E‐05 3.6E‐05 5.4E‐05 4.6E‐05 END Last Update: December 2014 DTSC Human and Ecological Risk Office DTSC Vapor Intrusion Screening Model Soil Gas DATENTER Page 1 of 4 Attachment A - 15 Feet Below Ground Surface CHEMICAL PROPERTIES SHEET Scenario: Commercial Diffusivity in air, Da Diffusivity in water, Dw Henry's law constant at reference temperature, H Henry's law constant reference temperature, TR Enthalpy of vaporization at the normal boiling point, Hv,b Normal boiling point, TB Critical temperature, TC Unit risk factor, URF Reference conc., RfC Molecular weight, MW (cm2/s) (cm2/s) (atm-m3/mol) (oC) (cal/mol) (oK) (oK) (g/m3)-1 (mg/m3) (g/mol) Chemical: 6.07E-02 6.02E-02 8.95E-02 5.63E-02 1.06E-01 7.69E-02 3.66E-02 6.85E-02 6.03E-02 6.84E-02 6.05E-02 5.28E-02 6.02E-02 6.89E-02 5.27E-02 5.28E-02 5.05E-02 7.78E-02 6.54E-02 7.92E-06 7.84E-06 1.03E-05 1.07E-05 1.30E-05 1.09E-05 1.06E-05 8.46E-06 7.86E-06 8.44E-06 8.38E-06 7.33E-06 7.83E-06 8.53E-06 7.32E-06 7.34E-06 9.46E-06 9.20E-06 1.00E-05 6.16E-03 8.77E-03 5.55E-03 2.12E-03 1.44E-02 3.67E-03 7.83E-04 7.88E-03 1.15E-02 7.18E-03 4.40E-04 1.59E-02 1.05E-02 5.18E-03 1.10E-02 1.76E-02 1.77E-02 6.64E-03 9.70E-02 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 9,369 9,321 7,342 7,800 6,391 6,988 5,900 8,501 10,335 8,523 10,373 9,290 9,123 8,661 0 88,730 8,288 7,930 5,999 442.30 437.89 353.24 363.15 319.00 334.32 416.14 409.34 425.56 412.27 491.14 456.46 432.20 417.60 450.15 446.50 394.40 383.78 296.70 649.17 637.25 562.16 585.85 552.00 536.40 678.20 617.20 631.10 617.05 748.40 660.50 630.00 630.30 652.00 679.00 620.20 591.79 471.00 0.0E+00 0.0E+00 2.9E-05 3.7E-05 0.0E+00 2.3E-05 2.7E-05 2.5E-06 0.0E+00 0.0E+00 3.4E-05 0.0E+00 0.0E+00 0.0E+00 0.0E+00 0.0E+00 6.1E-06 0.0E+00 0.0E+00 6.0E-02 6.0E-02 3.0E-03 8.0E-02 7.0E-01 9.8E-02 7.0E-02 1.0E+00 4.0E-01 1.0E-01 3.0E-03 2.0E-01 1.0E+00 1.0E-01 0.0E+00 4.0E-01 3.5E-02 5.0E+00 7.0E-01 120.20 120.20 78.11 163.83 76.13 119.38 208.28 106.17 120.19 106.17 128.18 134.22 120.19 106.17 134.20 134.22 165.83 92.14 137.36 1,2,4-Trimethylbenzene 1,3,5-Trimethylbenzene Benzene Bromodichloromethane Carbon disulfide Chloroform Dibromochloromethane Ethylbenzene Cumene (Isopropylbenzene) m-Xylene Naphthalene n-Butylbenzene n-Propylbenzene o-Xylene p-Isopropyltoluene sec-Butylbenzene Tetrachloroethylene Toluene Trichlorofluoromethane END Last Update: December 2014 DTSC Human and Ecological Risk Office DTSC Vapor Intrusion Screening Model Soil Gas CHEMPROPS Page 2 of 4 Attachment A - 15 Feet Below Ground Surface INTERMEDIATE CALCULATIONS SHEET Scenario: Sourcebuilding separation, LT Vadose zone Vadose zone soil effective air-filled total fluid porosity, saturation, a 3 V Vadose zone soil intrinsic permeability, Vadose zone soil relative air permeability, Vadose zone soil effective vapor permeability, Floorwall seam perimeter, Soil gas Commercial Bldg. ventilation rate, Ste ki krg kv Xcrack conc. Qbuilding (cm) 3 (cm /cm ) (cm3/cm 3) (cm2) (cm2) (cm2) (cm) (g/m 3) 3 (cm /s) 442.2 442.2 442.2 442.2 442.2 442.2 442.2 442.2 442.2 442.2 442.2 442.2 442.2 442.2 442.2 442.2 442.2 442.2 442.2 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 6.78E+04 6.78E+04 6.78E+04 6.78E+04 6.78E+04 6.78E+04 6.78E+04 6.78E+04 6.78E+04 6.78E+04 6.78E+04 6.78E+04 6.78E+04 6.78E+04 6.78E+04 6.78E+04 6.78E+04 6.78E+04 6.78E+04 Area of enclosed space below grade, Crackto-total area ratio, Crack depth below grade, Enthalpy of vaporization at ave. soil temperature, Henry's law constant at ave. soil temperature, Henry's law constant at ave. soil temperature, Vapor viscosity at ave. soil temperature, Vadose zone effective diffusion coefficient, Diffusion path length, AB  Zcrack Hv,TS HTS H'TS TS Deff V Ld (cm2) (unitless) (cm) (cal/mol) (atm-m3/mol) (unitless) (g/cm-s) (cm2/s) (cm) 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 11,516 11,495 7,977 8,526 6,572 7,407 6,696 9,994 12,447 10,090 12,768 11,671 11,186 10,245 0 106,642 9,410 9,001 5,993 5.77E-03 8.22E-03 5.30E-03 2.02E-03 1.39E-02 3.52E-03 7.54E-04 7.45E-03 1.07E-02 6.78E-03 4.09E-04 1.49E-02 9.85E-03 4.89E-03 1.10E-02 9.60E-03 1.68E-02 6.31E-03 9.38E-02 2.37E-01 3.37E-01 2.18E-01 8.28E-02 5.69E-01 1.44E-01 3.09E-02 3.05E-01 4.39E-01 2.78E-01 1.68E-02 6.10E-01 4.04E-01 2.00E-01 4.51E-01 3.94E-01 6.88E-01 2.59E-01 3.84E+00 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.32E-03 1.31E-03 1.95E-03 1.23E-03 2.32E-03 1.68E-03 8.10E-04 1.49E-03 1.31E-03 1.49E-03 1.34E-03 1.15E-03 1.31E-03 1.50E-03 1.15E-03 1.15E-03 1.10E-03 1.70E-03 1.42E-03 442.2 442.2 442.2 442.2 442.2 442.2 442.2 442.2 442.2 442.2 442.2 442.2 442.2 442.2 442.2 442.2 442.2 442.2 442.2 Last Update: December 2014 DTSC Human and Ecological Risk Office DTSC Vapor Intrusion Screening Model Soil Gas Chemical: 1,2,4-Trimethylbenzene 1,3,5-Trimethylbenzene Benzene Bromodichloromethane Carbon disulfide Chloroform Dibromochloromethane Ethylbenzene Cumene (Isopropylbenzene) m-Xylene Naphthalene n-Butylbenzene n-Propylbenzene o-Xylene p-Isopropyltoluene sec-Butylbenzene Tetrachloroethylene Toluene Trichlorofluoromethane Chemical: 1,2,4-Trimethylbenzene 1,3,5-Trimethylbenzene Benzene Bromodichloromethane Carbon disulfide Chloroform Dibromochloromethane Ethylbenzene Cumene (Isopropylbenzene) m-Xylene Naphthalene n-Butylbenzene n-Propylbenzene o-Xylene p-Isopropyltoluene sec-Butylbenzene Tetrachloroethylene Toluene Trichlorofluoromethane INTERCALCS Page 3 of 4 Attachment A - 15 Feet Below Ground Surface INTERMEDIATE CALCULATIONS SHEET Lp Csource rcrack Qsoil Crack effective diffusion coefficient, Dcrack Acrack Exponent of equivalent foundation Peclet number, exp(Pef)  Cbuilding (cm) 3 (g/m ) (cm) 3 (cm /s) (cm2/s) (cm2) (unitless) (unitless) (g/m 3) 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 1.32E-03 1.31E-03 1.95E-03 1.23E-03 2.32E-03 1.68E-03 8.10E-04 1.49E-03 1.31E-03 1.49E-03 1.34E-03 1.15E-03 1.31E-03 1.50E-03 1.15E-03 1.15E-03 1.10E-03 1.70E-03 1.42E-03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.48E+54 1.46E+55 1.24E+37 7.24E+58 1.65E+31 1.40E+43 2.20E+89 3.33E+48 1.26E+55 3.89E+48 1.59E+54 9.31E+62 1.71E+55 1.53E+48 1.12E+63 8.62E+62 6.96E+65 4.94E+42 7.27E+50 4.26E-05 4.23E-05 6.18E-05 3.97E-05 7.28E-05 5.35E-05 2.64E-05 4.78E-05 4.23E-05 4.78E-05 4.30E-05 3.72E-05 4.22E-05 4.82E-05 3.71E-05 3.72E-05 3.56E-05 5.41E-05 4.57E-05 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Convection path length, Source vapor conc., Crack radius, Average vapor flow rate into bldg., Area of crack, Infinite source indoor attenuation coefficient, Infinite source bldg. conc., Chemical: 1,2,4-Trimethylbenzene 1,3,5-Trimethylbenzene Benzene Bromodichloromethane Carbon disulfide Chloroform Dibromochloromethane Ethylbenzene Cumene (Isopropylbenzene) m-Xylene Naphthalene n-Butylbenzene n-Propylbenzene o-Xylene p-Isopropyltoluene sec-Butylbenzene Tetrachloroethylene Toluene Trichlorofluoromethane END Last Update: December 2014 DTSC Human and Ecological Risk Office DTSC Vapor Intrusion Screening Model Soil Gas INTERCALCS Page 4 of 4 Attachment A - 20 Feet Below Ground Surface USEPA SG-SCREEN Version 2.0, 04/2003 Department of Toxic Substances Control Vapor Intrusion Screening Model - Soil Gas DTSC Modification December 2014 TRC Modification June 2017 Scenario: Commercial DATA ENTRY SHEET Soil Gas Concentration Data Reset to Defaults ENTER Chemical CAS No. ENTER Soil gas conc., OR ENTER Soil gas conc., (numbers only, Cg Cg no dashes) (g/m3) (ppmv) Chemical Attenuation Factor (unitless) 1,2,4-Trimethylbenzene 1,3,5-Trimethylbenzene Benzene Bromodichloromethane Carbon disulfide Chloroform Dibromochloromethane Ethylbenzene Cumene (Isopropylbenzene) m-Xylene Naphthalene n-Butylbenzene n-Propylbenzene o-Xylene p-Isopropyltoluene sec-Butylbenzene Tetrachloroethylene Toluene Trichlorofluoromethane 95636 108678 71432 75274 75150 67663 124481 100414 98828 108383 91203 104518 103651 95476 99876 135988 127184 108883 75694 MORE  MORE  ENTER Depth below grade to bottom of enclosed space floor, LF ENTER ENTER ENTER ENTER Soil gas sampling depth below grade, Ls Average soil temperature, TS Vadose zone SCS soil type (used to estimate soil vapor User-defined vadose zone soil vapor permeability, kv (15 or 200 cm) (cm) (oC) permeability) 15 609.6 24 LS ENTER Vandose zone SCS soil type ENTER Vadose zone soil dry bulk density, ENTER Vadose zone soil total porosity, ENTER Vadose zone soil water-filled porosity, Lookup Receptor Parameters NEW=> (cm2) ENTER Average vapor flow rate into bldg. (Leave blank to calculate) bA nV wV Qsoil (g/cm3) (unitless) (cm3/cm3) (L/m) LS 1.62 0.39 0.21 5 ENTER Averaging time for carcinogens, ATC ENTER Averaging time for noncarcinogens, ATNC ENTER ENTER ENTER ENTER Exposure duration, ED Exposure frequency, EF Exposure Time ET Air Exchange Rate ACH (yrs) (yrs) (yrs) (days/yr) (hrs/day) (hour)-1 70 25 25 250 8 (NEW) 1 (NEW) Lookup Soil Parameters MORE  OR Commercial 3.2E‐05 3.2E‐05 4.7E‐05 3.0E‐05 5.5E‐05 4.0E‐05 2.0E‐05 3.6E‐05 3.2E‐05 3.6E‐05 3.2E‐05 2.8E‐05 3.2E‐05 3.6E‐05 2.8E‐05 2.8E‐05 2.7E‐05 4.1E‐05 3.4E‐05 END Last Update: December 2014 DTSC Human and Ecological Risk Office DTSC Vapor Intrusion Screening Model Soil Gas DATENTER Page 1 of 4 Attachment A - 20 Feet Below Ground Surface CHEMICAL PROPERTIES SHEET Scenario: Commercial Diffusivity in air, Da Diffusivity in water, Dw Henry's law constant at reference temperature, H Henry's law constant reference temperature, TR Enthalpy of vaporization at the normal boiling point, Hv,b Normal boiling point, TB Critical temperature, TC Unit risk factor, URF Reference conc., RfC Molecular weight, MW (cm2/s) (cm2/s) (atm-m3/mol) (oC) (cal/mol) (oK) (oK) (g/m3)-1 (mg/m3) (g/mol) Chemical: 6.07E-02 6.02E-02 8.95E-02 5.63E-02 1.06E-01 7.69E-02 3.66E-02 6.85E-02 6.03E-02 6.84E-02 6.05E-02 5.28E-02 6.02E-02 6.89E-02 5.27E-02 5.28E-02 5.05E-02 7.78E-02 6.54E-02 7.92E-06 7.84E-06 1.03E-05 1.07E-05 1.30E-05 1.09E-05 1.06E-05 8.46E-06 7.86E-06 8.44E-06 8.38E-06 7.33E-06 7.83E-06 8.53E-06 7.32E-06 7.34E-06 9.46E-06 9.20E-06 1.00E-05 6.16E-03 8.77E-03 5.55E-03 2.12E-03 1.44E-02 3.67E-03 7.83E-04 7.88E-03 1.15E-02 7.18E-03 4.40E-04 1.59E-02 1.05E-02 5.18E-03 1.10E-02 1.76E-02 1.77E-02 6.64E-03 9.70E-02 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 9,369 9,321 7,342 7,800 6,391 6,988 5,900 8,501 10,335 8,523 10,373 9,290 9,123 8,661 0 88,730 8,288 7,930 5,999 442.30 437.89 353.24 363.15 319.00 334.32 416.14 409.34 425.56 412.27 491.14 456.46 432.20 417.60 450.15 446.50 394.40 383.78 296.70 649.17 637.25 562.16 585.85 552.00 536.40 678.20 617.20 631.10 617.05 748.40 660.50 630.00 630.30 652.00 679.00 620.20 591.79 471.00 0.0E+00 0.0E+00 2.9E-05 3.7E-05 0.0E+00 2.3E-05 2.7E-05 2.5E-06 0.0E+00 0.0E+00 3.4E-05 0.0E+00 0.0E+00 0.0E+00 0.0E+00 0.0E+00 6.1E-06 0.0E+00 0.0E+00 6.0E-02 6.0E-02 3.0E-03 8.0E-02 7.0E-01 9.8E-02 7.0E-02 1.0E+00 4.0E-01 1.0E-01 3.0E-03 2.0E-01 1.0E+00 1.0E-01 0.0E+00 4.0E-01 3.5E-02 5.0E+00 7.0E-01 120.20 120.20 78.11 163.83 76.13 119.38 208.28 106.17 120.19 106.17 128.18 134.22 120.19 106.17 134.20 134.22 165.83 92.14 137.36 1,2,4-Trimethylbenzene 1,3,5-Trimethylbenzene Benzene Bromodichloromethane Carbon disulfide Chloroform Dibromochloromethane Ethylbenzene Cumene (Isopropylbenzene) m-Xylene Naphthalene n-Butylbenzene n-Propylbenzene o-Xylene p-Isopropyltoluene sec-Butylbenzene Tetrachloroethylene Toluene Trichlorofluoromethane END Last Update: December 2014 DTSC Human and Ecological Risk Office DTSC Vapor Intrusion Screening Model Soil Gas CHEMPROPS Page 2 of 4 Attachment A - 20 Feet Below Ground Surface INTERMEDIATE CALCULATIONS SHEET Scenario: Sourcebuilding separation, LT Vadose zone Vadose zone soil effective air-filled total fluid porosity, saturation, a 3 V Vadose zone soil intrinsic permeability, Vadose zone soil relative air permeability, Vadose zone soil effective vapor permeability, Floorwall seam perimeter, Soil gas Commercial Bldg. ventilation rate, Ste ki krg kv Xcrack conc. Qbuilding (cm) 3 (cm /cm ) (cm3/cm 3) (cm2) (cm2) (cm2) (cm) (g/m 3) 3 (cm /s) 594.6 594.6 594.6 594.6 594.6 594.6 594.6 594.6 594.6 594.6 594.6 594.6 594.6 594.6 594.6 594.6 594.6 594.6 594.6 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 6.78E+04 6.78E+04 6.78E+04 6.78E+04 6.78E+04 6.78E+04 6.78E+04 6.78E+04 6.78E+04 6.78E+04 6.78E+04 6.78E+04 6.78E+04 6.78E+04 6.78E+04 6.78E+04 6.78E+04 6.78E+04 6.78E+04 Area of enclosed space below grade, Crackto-total area ratio, Crack depth below grade, Enthalpy of vaporization at ave. soil temperature, Henry's law constant at ave. soil temperature, Henry's law constant at ave. soil temperature, Vapor viscosity at ave. soil temperature, Vadose zone effective diffusion coefficient, Diffusion path length, AB  Zcrack Hv,TS HTS H'TS TS Deff V Ld (cm2) (unitless) (cm) (cal/mol) (atm-m3/mol) (unitless) (g/cm-s) (cm2/s) (cm) 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 11,516 11,495 7,977 8,526 6,572 7,407 6,696 9,994 12,447 10,090 12,768 11,671 11,186 10,245 0 106,642 9,410 9,001 5,993 5.77E-03 8.22E-03 5.30E-03 2.02E-03 1.39E-02 3.52E-03 7.54E-04 7.45E-03 1.07E-02 6.78E-03 4.09E-04 1.49E-02 9.85E-03 4.89E-03 1.10E-02 9.60E-03 1.68E-02 6.31E-03 9.38E-02 2.37E-01 3.37E-01 2.18E-01 8.28E-02 5.69E-01 1.44E-01 3.09E-02 3.05E-01 4.39E-01 2.78E-01 1.68E-02 6.10E-01 4.04E-01 2.00E-01 4.51E-01 3.94E-01 6.88E-01 2.59E-01 3.84E+00 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.32E-03 1.31E-03 1.95E-03 1.23E-03 2.32E-03 1.68E-03 8.10E-04 1.49E-03 1.31E-03 1.49E-03 1.34E-03 1.15E-03 1.31E-03 1.50E-03 1.15E-03 1.15E-03 1.10E-03 1.70E-03 1.42E-03 594.6 594.6 594.6 594.6 594.6 594.6 594.6 594.6 594.6 594.6 594.6 594.6 594.6 594.6 594.6 594.6 594.6 594.6 594.6 Last Update: December 2014 DTSC Human and Ecological Risk Office DTSC Vapor Intrusion Screening Model Soil Gas Chemical: 1,2,4-Trimethylbenzene 1,3,5-Trimethylbenzene Benzene Bromodichloromethane Carbon disulfide Chloroform Dibromochloromethane Ethylbenzene Cumene (Isopropylbenzene) m-Xylene Naphthalene n-Butylbenzene n-Propylbenzene o-Xylene p-Isopropyltoluene sec-Butylbenzene Tetrachloroethylene Toluene Trichlorofluoromethane Chemical: 1,2,4-Trimethylbenzene 1,3,5-Trimethylbenzene Benzene Bromodichloromethane Carbon disulfide Chloroform Dibromochloromethane Ethylbenzene Cumene (Isopropylbenzene) m-Xylene Naphthalene n-Butylbenzene n-Propylbenzene o-Xylene p-Isopropyltoluene sec-Butylbenzene Tetrachloroethylene Toluene Trichlorofluoromethane INTERCALCS Page 3 of 4 Attachment A - 20 Feet Below Ground Surface INTERMEDIATE CALCULATIONS SHEET Lp Csource rcrack Qsoil Crack effective diffusion coefficient, Dcrack Acrack Exponent of equivalent foundation Peclet number, exp(Pef)  Cbuilding (cm) 3 (g/m ) (cm) 3 (cm /s) (cm2/s) (cm2) (unitless) (unitless) (g/m 3) 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 1.32E-03 1.31E-03 1.95E-03 1.23E-03 2.32E-03 1.68E-03 8.10E-04 1.49E-03 1.31E-03 1.49E-03 1.34E-03 1.15E-03 1.31E-03 1.50E-03 1.15E-03 1.15E-03 1.10E-03 1.70E-03 1.42E-03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.48E+54 1.46E+55 1.24E+37 7.24E+58 1.65E+31 1.40E+43 2.20E+89 3.33E+48 1.26E+55 3.89E+48 1.59E+54 9.31E+62 1.71E+55 1.53E+48 1.12E+63 8.62E+62 6.96E+65 4.94E+42 7.27E+50 3.20E-05 3.17E-05 4.66E-05 2.98E-05 5.50E-05 4.03E-05 1.98E-05 3.59E-05 3.18E-05 3.59E-05 3.23E-05 2.79E-05 3.17E-05 3.62E-05 2.78E-05 2.79E-05 2.67E-05 4.07E-05 3.43E-05 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Convection path length, Source vapor conc., Crack radius, Average vapor flow rate into bldg., Area of crack, Infinite source indoor attenuation coefficient, Infinite source bldg. conc., Chemical: 1,2,4-Trimethylbenzene 1,3,5-Trimethylbenzene Benzene Bromodichloromethane Carbon disulfide Chloroform Dibromochloromethane Ethylbenzene Cumene (Isopropylbenzene) m-Xylene Naphthalene n-Butylbenzene n-Propylbenzene o-Xylene p-Isopropyltoluene sec-Butylbenzene Tetrachloroethylene Toluene Trichlorofluoromethane END Last Update: December 2014 DTSC Human and Ecological Risk Office DTSC Vapor Intrusion Screening Model Soil Gas INTERCALCS Page 4 of 4 Attachment A - 25 Feet Below Ground Surface USEPA SG-SCREEN Version 2.0, 04/2003 Department of Toxic Substances Control Vapor Intrusion Screening Model - Soil Gas DTSC Modification December 2014 TRC Modification June 2017 Scenario: Commercial DATA ENTRY SHEET Soil Gas Concentration Data Reset to Defaults ENTER Chemical CAS No. ENTER Soil gas conc., OR ENTER Soil gas conc., (numbers only, Cg Cg no dashes) (g/m3) (ppmv) Chemical Attenuation Factor (unitless) 1,2,4-Trimethylbenzene 1,3,5-Trimethylbenzene Benzene Bromodichloromethane Carbon disulfide Chloroform Dibromochloromethane Ethylbenzene Cumene (Isopropylbenzene) m-Xylene Naphthalene n-Butylbenzene n-Propylbenzene o-Xylene p-Isopropyltoluene sec-Butylbenzene Tetrachloroethylene Toluene Trichlorofluoromethane 95636 108678 71432 75274 75150 67663 124481 100414 98828 108383 91203 104518 103651 95476 99876 135988 127184 108883 75694 MORE  MORE  ENTER Depth below grade to bottom of enclosed space floor, LF ENTER ENTER ENTER ENTER Soil gas sampling depth below grade, Ls Average soil temperature, TS Vadose zone SCS soil type (used to estimate soil vapor User-defined vadose zone soil vapor permeability, kv (15 or 200 cm) (cm) (oC) permeability) 15 609.6 24 LS ENTER Vandose zone SCS soil type ENTER Vadose zone soil dry bulk density, ENTER Vadose zone soil total porosity, ENTER Vadose zone soil water-filled porosity, Lookup Receptor Parameters NEW=> (cm2) ENTER Average vapor flow rate into bldg. (Leave blank to calculate) bA nV wV Qsoil (g/cm3) (unitless) (cm3/cm3) (L/m) LS 1.62 0.39 0.21 5 ENTER Averaging time for carcinogens, ATC ENTER Averaging time for noncarcinogens, ATNC ENTER ENTER ENTER ENTER Exposure duration, ED Exposure frequency, EF Exposure Time ET Air Exchange Rate ACH (yrs) (yrs) (yrs) (days/yr) (hrs/day) (hour)-1 70 25 25 250 8 (NEW) 1 (NEW) Lookup Soil Parameters MORE  OR Commercial 3.2E‐05 3.2E‐05 4.7E‐05 3.0E‐05 5.5E‐05 4.0E‐05 2.0E‐05 3.6E‐05 3.2E‐05 3.6E‐05 3.2E‐05 2.8E‐05 3.2E‐05 3.6E‐05 2.8E‐05 2.8E‐05 2.7E‐05 4.1E‐05 3.4E‐05 END Last Update: December 2014 DTSC Human and Ecological Risk Office DTSC Vapor Intrusion Screening Model Soil Gas DATENTER Page 1 of 4 Attachment A - 25 Feet Below Ground Surface CHEMICAL PROPERTIES SHEET Scenario: Commercial Diffusivity in air, Da Diffusivity in water, Dw Henry's law constant at reference temperature, H Henry's law constant reference temperature, TR Enthalpy of vaporization at the normal boiling point, Hv,b Normal boiling point, TB Critical temperature, TC Unit risk factor, URF Reference conc., RfC Molecular weight, MW (cm2/s) (cm2/s) (atm-m3/mol) (oC) (cal/mol) (oK) (oK) (g/m3)-1 (mg/m3) (g/mol) Chemical: 6.07E-02 6.02E-02 8.95E-02 5.63E-02 1.06E-01 7.69E-02 3.66E-02 6.85E-02 6.03E-02 6.84E-02 6.05E-02 5.28E-02 6.02E-02 6.89E-02 5.27E-02 5.28E-02 5.05E-02 7.78E-02 6.54E-02 7.92E-06 7.84E-06 1.03E-05 1.07E-05 1.30E-05 1.09E-05 1.06E-05 8.46E-06 7.86E-06 8.44E-06 8.38E-06 7.33E-06 7.83E-06 8.53E-06 7.32E-06 7.34E-06 9.46E-06 9.20E-06 1.00E-05 6.16E-03 8.77E-03 5.55E-03 2.12E-03 1.44E-02 3.67E-03 7.83E-04 7.88E-03 1.15E-02 7.18E-03 4.40E-04 1.59E-02 1.05E-02 5.18E-03 1.10E-02 1.76E-02 1.77E-02 6.64E-03 9.70E-02 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 9,369 9,321 7,342 7,800 6,391 6,988 5,900 8,501 10,335 8,523 10,373 9,290 9,123 8,661 0 88,730 8,288 7,930 5,999 442.30 437.89 353.24 363.15 319.00 334.32 416.14 409.34 425.56 412.27 491.14 456.46 432.20 417.60 450.15 446.50 394.40 383.78 296.70 649.17 637.25 562.16 585.85 552.00 536.40 678.20 617.20 631.10 617.05 748.40 660.50 630.00 630.30 652.00 679.00 620.20 591.79 471.00 0.0E+00 0.0E+00 2.9E-05 3.7E-05 0.0E+00 2.3E-05 2.7E-05 2.5E-06 0.0E+00 0.0E+00 3.4E-05 0.0E+00 0.0E+00 0.0E+00 0.0E+00 0.0E+00 6.1E-06 0.0E+00 0.0E+00 6.0E-02 6.0E-02 3.0E-03 8.0E-02 7.0E-01 9.8E-02 7.0E-02 1.0E+00 4.0E-01 1.0E-01 3.0E-03 2.0E-01 1.0E+00 1.0E-01 0.0E+00 4.0E-01 3.5E-02 5.0E+00 7.0E-01 120.20 120.20 78.11 163.83 76.13 119.38 208.28 106.17 120.19 106.17 128.18 134.22 120.19 106.17 134.20 134.22 165.83 92.14 137.36 1,2,4-Trimethylbenzene 1,3,5-Trimethylbenzene Benzene Bromodichloromethane Carbon disulfide Chloroform Dibromochloromethane Ethylbenzene Cumene (Isopropylbenzene) m-Xylene Naphthalene n-Butylbenzene n-Propylbenzene o-Xylene p-Isopropyltoluene sec-Butylbenzene Tetrachloroethylene Toluene Trichlorofluoromethane END Last Update: December 2014 DTSC Human and Ecological Risk Office DTSC Vapor Intrusion Screening Model Soil Gas CHEMPROPS Page 2 of 4 Attachment A - 25 Feet Below Ground Surface INTERMEDIATE CALCULATIONS SHEET Scenario: Sourcebuilding separation, LT Vadose zone Vadose zone soil effective air-filled total fluid porosity, saturation, a 3 V Vadose zone soil intrinsic permeability, Vadose zone soil relative air permeability, Vadose zone soil effective vapor permeability, Floorwall seam perimeter, Soil gas Commercial Bldg. ventilation rate, Ste ki krg kv Xcrack conc. Qbuilding (cm) 3 (cm /cm ) (cm3/cm 3) (cm2) (cm2) (cm2) (cm) (g/m 3) 3 (cm /s) 594.6 594.6 594.6 594.6 594.6 594.6 594.6 594.6 594.6 594.6 594.6 594.6 594.6 594.6 594.6 594.6 594.6 594.6 594.6 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 6.78E+04 6.78E+04 6.78E+04 6.78E+04 6.78E+04 6.78E+04 6.78E+04 6.78E+04 6.78E+04 6.78E+04 6.78E+04 6.78E+04 6.78E+04 6.78E+04 6.78E+04 6.78E+04 6.78E+04 6.78E+04 6.78E+04 Area of enclosed space below grade, Crackto-total area ratio, Crack depth below grade, Enthalpy of vaporization at ave. soil temperature, Henry's law constant at ave. soil temperature, Henry's law constant at ave. soil temperature, Vapor viscosity at ave. soil temperature, Vadose zone effective diffusion coefficient, Diffusion path length, AB  Zcrack Hv,TS HTS H'TS TS Deff V Ld (cm2) (unitless) (cm) (cal/mol) (atm-m3/mol) (unitless) (g/cm-s) (cm2/s) (cm) 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 11,516 11,495 7,977 8,526 6,572 7,407 6,696 9,994 12,447 10,090 12,768 11,671 11,186 10,245 0 106,642 9,410 9,001 5,993 5.77E-03 8.22E-03 5.30E-03 2.02E-03 1.39E-02 3.52E-03 7.54E-04 7.45E-03 1.07E-02 6.78E-03 4.09E-04 1.49E-02 9.85E-03 4.89E-03 1.10E-02 9.60E-03 1.68E-02 6.31E-03 9.38E-02 2.37E-01 3.37E-01 2.18E-01 8.28E-02 5.69E-01 1.44E-01 3.09E-02 3.05E-01 4.39E-01 2.78E-01 1.68E-02 6.10E-01 4.04E-01 2.00E-01 4.51E-01 3.94E-01 6.88E-01 2.59E-01 3.84E+00 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.32E-03 1.31E-03 1.95E-03 1.23E-03 2.32E-03 1.68E-03 8.10E-04 1.49E-03 1.31E-03 1.49E-03 1.34E-03 1.15E-03 1.31E-03 1.50E-03 1.15E-03 1.15E-03 1.10E-03 1.70E-03 1.42E-03 594.6 594.6 594.6 594.6 594.6 594.6 594.6 594.6 594.6 594.6 594.6 594.6 594.6 594.6 594.6 594.6 594.6 594.6 594.6 Last Update: December 2014 DTSC Human and Ecological Risk Office DTSC Vapor Intrusion Screening Model Soil Gas Chemical: 1,2,4-Trimethylbenzene 1,3,5-Trimethylbenzene Benzene Bromodichloromethane Carbon disulfide Chloroform Dibromochloromethane Ethylbenzene Cumene (Isopropylbenzene) m-Xylene Naphthalene n-Butylbenzene n-Propylbenzene o-Xylene p-Isopropyltoluene sec-Butylbenzene Tetrachloroethylene Toluene Trichlorofluoromethane Chemical: 1,2,4-Trimethylbenzene 1,3,5-Trimethylbenzene Benzene Bromodichloromethane Carbon disulfide Chloroform Dibromochloromethane Ethylbenzene Cumene (Isopropylbenzene) m-Xylene Naphthalene n-Butylbenzene n-Propylbenzene o-Xylene p-Isopropyltoluene sec-Butylbenzene Tetrachloroethylene Toluene Trichlorofluoromethane INTERCALCS Page 3 of 4 Attachment A - 25 Feet Below Ground Surface INTERMEDIATE CALCULATIONS SHEET Lp Csource rcrack Qsoil Crack effective diffusion coefficient, Dcrack Acrack Exponent of equivalent foundation Peclet number, exp(Pef)  Cbuilding (cm) 3 (g/m ) (cm) 3 (cm /s) (cm2/s) (cm2) (unitless) (unitless) (g/m 3) 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 1.32E-03 1.31E-03 1.95E-03 1.23E-03 2.32E-03 1.68E-03 8.10E-04 1.49E-03 1.31E-03 1.49E-03 1.34E-03 1.15E-03 1.31E-03 1.50E-03 1.15E-03 1.15E-03 1.10E-03 1.70E-03 1.42E-03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.48E+54 1.46E+55 1.24E+37 7.24E+58 1.65E+31 1.40E+43 2.20E+89 3.33E+48 1.26E+55 3.89E+48 1.59E+54 9.31E+62 1.71E+55 1.53E+48 1.12E+63 8.62E+62 6.96E+65 4.94E+42 7.27E+50 3.20E-05 3.17E-05 4.66E-05 2.98E-05 5.50E-05 4.03E-05 1.98E-05 3.59E-05 3.18E-05 3.59E-05 3.23E-05 2.79E-05 3.17E-05 3.62E-05 2.78E-05 2.79E-05 2.67E-05 4.07E-05 3.43E-05 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Convection path length, Source vapor conc., Crack radius, Average vapor flow rate into bldg., Area of crack, Infinite source indoor attenuation coefficient, Infinite source bldg. conc., Chemical: 1,2,4-Trimethylbenzene 1,3,5-Trimethylbenzene Benzene Bromodichloromethane Carbon disulfide Chloroform Dibromochloromethane Ethylbenzene Cumene (Isopropylbenzene) m-Xylene Naphthalene n-Butylbenzene n-Propylbenzene o-Xylene p-Isopropyltoluene sec-Butylbenzene Tetrachloroethylene Toluene Trichlorofluoromethane END Last Update: December 2014 DTSC Human and Ecological Risk Office DTSC Vapor Intrusion Screening Model Soil Gas INTERCALCS Page 4 of 4 Attachment A - 30 Feet Below Ground Surface USEPA SG-SCREEN Version 2.0, 04/2003 Department of Toxic Substances Control Vapor Intrusion Screening Model - Soil Gas DTSC Modification December 2014 TRC Modification June 2017 Scenario: Commercial DATA ENTRY SHEET Soil Gas Concentration Data Reset to Defaults ENTER Chemical CAS No. ENTER Soil gas conc., OR ENTER Soil gas conc., (numbers only, Cg Cg no dashes) (g/m3) (ppmv) Chemical Attenuation Factor (unitless) 1,2,4-Trimethylbenzene 1,3,5-Trimethylbenzene Benzene Bromodichloromethane Carbon disulfide Chloroform Dibromochloromethane Ethylbenzene Cumene (Isopropylbenzene) m-Xylene Naphthalene n-Butylbenzene n-Propylbenzene o-Xylene p-Isopropyltoluene sec-Butylbenzene Tetrachloroethylene Toluene Trichlorofluoromethane 95636 108678 71432 75274 75150 67663 124481 100414 98828 108383 91203 104518 103651 95476 99876 135988 127184 108883 75694 MORE  MORE  ENTER Depth below grade to bottom of enclosed space floor, LF ENTER ENTER ENTER ENTER Soil gas sampling depth below grade, Ls Average soil temperature, TS Vadose zone SCS soil type (used to estimate soil vapor User-defined vadose zone soil vapor permeability, kv (15 or 200 cm) (cm) (oC) permeability) 15 914.4 24 LS ENTER Vandose zone SCS soil type ENTER Vadose zone soil dry bulk density, ENTER Vadose zone soil total porosity, ENTER Vadose zone soil water-filled porosity, Lookup Receptor Parameters NEW=> (cm2) ENTER Average vapor flow rate into bldg. (Leave blank to calculate) bA nV wV Qsoil (g/cm3) (unitless) (cm3/cm3) (L/m) LS 1.62 0.39 0.21 5 ENTER Averaging time for carcinogens, ATC ENTER Averaging time for noncarcinogens, ATNC ENTER ENTER ENTER ENTER Exposure duration, ED Exposure frequency, EF Exposure Time ET Air Exchange Rate ACH (yrs) (yrs) (yrs) (days/yr) (hrs/day) (hour)-1 70 25 25 250 8 (NEW) 1 (NEW) Lookup Soil Parameters MORE  OR Commercial 2.1E‐05 2.1E‐05 3.1E‐05 2.0E‐05 3.7E‐05 2.7E‐05 1.3E‐05 2.4E‐05 2.1E‐05 2.4E‐05 2.2E‐05 1.9E‐05 2.1E‐05 2.4E‐05 1.9E‐05 1.9E‐05 1.8E‐05 2.7E‐05 2.3E‐05 END Last Update: December 2014 DTSC Human and Ecological Risk Office DTSC Vapor Intrusion Screening Model Soil Gas DATENTER Page 1 of 4 Attachment A - 30 Feet Below Ground Surface CHEMICAL PROPERTIES SHEET Scenario: Commercial Diffusivity in air, Da Diffusivity in water, Dw Henry's law constant at reference temperature, H Henry's law constant reference temperature, TR Enthalpy of vaporization at the normal boiling point, Hv,b Normal boiling point, TB Critical temperature, TC Unit risk factor, URF Reference conc., RfC Molecular weight, MW (cm2/s) (cm2/s) (atm-m3/mol) (oC) (cal/mol) (oK) (oK) (g/m3)-1 (mg/m3) (g/mol) Chemical: 6.07E-02 6.02E-02 8.95E-02 5.63E-02 1.06E-01 7.69E-02 3.66E-02 6.85E-02 6.03E-02 6.84E-02 6.05E-02 5.28E-02 6.02E-02 6.89E-02 5.27E-02 5.28E-02 5.05E-02 7.78E-02 6.54E-02 7.92E-06 7.84E-06 1.03E-05 1.07E-05 1.30E-05 1.09E-05 1.06E-05 8.46E-06 7.86E-06 8.44E-06 8.38E-06 7.33E-06 7.83E-06 8.53E-06 7.32E-06 7.34E-06 9.46E-06 9.20E-06 1.00E-05 6.16E-03 8.77E-03 5.55E-03 2.12E-03 1.44E-02 3.67E-03 7.83E-04 7.88E-03 1.15E-02 7.18E-03 4.40E-04 1.59E-02 1.05E-02 5.18E-03 1.10E-02 1.76E-02 1.77E-02 6.64E-03 9.70E-02 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 9,369 9,321 7,342 7,800 6,391 6,988 5,900 8,501 10,335 8,523 10,373 9,290 9,123 8,661 0 88,730 8,288 7,930 5,999 442.30 437.89 353.24 363.15 319.00 334.32 416.14 409.34 425.56 412.27 491.14 456.46 432.20 417.60 450.15 446.50 394.40 383.78 296.70 649.17 637.25 562.16 585.85 552.00 536.40 678.20 617.20 631.10 617.05 748.40 660.50 630.00 630.30 652.00 679.00 620.20 591.79 471.00 0.0E+00 0.0E+00 2.9E-05 3.7E-05 0.0E+00 2.3E-05 2.7E-05 2.5E-06 0.0E+00 0.0E+00 3.4E-05 0.0E+00 0.0E+00 0.0E+00 0.0E+00 0.0E+00 6.1E-06 0.0E+00 0.0E+00 6.0E-02 6.0E-02 3.0E-03 8.0E-02 7.0E-01 9.8E-02 7.0E-02 1.0E+00 4.0E-01 1.0E-01 3.0E-03 2.0E-01 1.0E+00 1.0E-01 0.0E+00 4.0E-01 3.5E-02 5.0E+00 7.0E-01 120.20 120.20 78.11 163.83 76.13 119.38 208.28 106.17 120.19 106.17 128.18 134.22 120.19 106.17 134.20 134.22 165.83 92.14 137.36 1,2,4-Trimethylbenzene 1,3,5-Trimethylbenzene Benzene Bromodichloromethane Carbon disulfide Chloroform Dibromochloromethane Ethylbenzene Cumene (Isopropylbenzene) m-Xylene Naphthalene n-Butylbenzene n-Propylbenzene o-Xylene p-Isopropyltoluene sec-Butylbenzene Tetrachloroethylene Toluene Trichlorofluoromethane END Last Update: December 2014 DTSC Human and Ecological Risk Office DTSC Vapor Intrusion Screening Model Soil Gas CHEMPROPS Page 2 of 4 Attachment A - 30 Feet Below Ground Surface INTERMEDIATE CALCULATIONS SHEET Scenario: Sourcebuilding separation, LT Vadose zone Vadose zone soil effective air-filled total fluid porosity, saturation, a 3 V Vadose zone soil intrinsic permeability, Vadose zone soil relative air permeability, Vadose zone soil effective vapor permeability, Floorwall seam perimeter, Soil gas Commercial Bldg. ventilation rate, Ste ki krg kv Xcrack conc. Qbuilding (cm) 3 (cm /cm ) (cm3/cm 3) (cm2) (cm2) (cm2) (cm) (g/m 3) 3 (cm /s) 899.4 899.4 899.4 899.4 899.4 899.4 899.4 899.4 899.4 899.4 899.4 899.4 899.4 899.4 899.4 899.4 899.4 899.4 899.4 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 6.78E+04 6.78E+04 6.78E+04 6.78E+04 6.78E+04 6.78E+04 6.78E+04 6.78E+04 6.78E+04 6.78E+04 6.78E+04 6.78E+04 6.78E+04 6.78E+04 6.78E+04 6.78E+04 6.78E+04 6.78E+04 6.78E+04 Area of enclosed space below grade, Crackto-total area ratio, Crack depth below grade, Enthalpy of vaporization at ave. soil temperature, Henry's law constant at ave. soil temperature, Henry's law constant at ave. soil temperature, Vapor viscosity at ave. soil temperature, Vadose zone effective diffusion coefficient, Diffusion path length, AB  Zcrack Hv,TS HTS H'TS TS Deff V Ld (cm2) (unitless) (cm) (cal/mol) (atm-m3/mol) (unitless) (g/cm-s) (cm2/s) (cm) 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 11,516 11,495 7,977 8,526 6,572 7,407 6,696 9,994 12,447 10,090 12,768 11,671 11,186 10,245 0 106,642 9,410 9,001 5,993 5.77E-03 8.22E-03 5.30E-03 2.02E-03 1.39E-02 3.52E-03 7.54E-04 7.45E-03 1.07E-02 6.78E-03 4.09E-04 1.49E-02 9.85E-03 4.89E-03 1.10E-02 9.60E-03 1.68E-02 6.31E-03 9.38E-02 2.37E-01 3.37E-01 2.18E-01 8.28E-02 5.69E-01 1.44E-01 3.09E-02 3.05E-01 4.39E-01 2.78E-01 1.68E-02 6.10E-01 4.04E-01 2.00E-01 4.51E-01 3.94E-01 6.88E-01 2.59E-01 3.84E+00 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.32E-03 1.31E-03 1.95E-03 1.23E-03 2.32E-03 1.68E-03 8.10E-04 1.49E-03 1.31E-03 1.49E-03 1.34E-03 1.15E-03 1.31E-03 1.50E-03 1.15E-03 1.15E-03 1.10E-03 1.70E-03 1.42E-03 899.4 899.4 899.4 899.4 899.4 899.4 899.4 899.4 899.4 899.4 899.4 899.4 899.4 899.4 899.4 899.4 899.4 899.4 899.4 Last Update: December 2014 DTSC Human and Ecological Risk Office DTSC Vapor Intrusion Screening Model Soil Gas Chemical: 1,2,4-Trimethylbenzene 1,3,5-Trimethylbenzene Benzene Bromodichloromethane Carbon disulfide Chloroform Dibromochloromethane Ethylbenzene Cumene (Isopropylbenzene) m-Xylene Naphthalene n-Butylbenzene n-Propylbenzene o-Xylene p-Isopropyltoluene sec-Butylbenzene Tetrachloroethylene Toluene Trichlorofluoromethane Chemical: 1,2,4-Trimethylbenzene 1,3,5-Trimethylbenzene Benzene Bromodichloromethane Carbon disulfide Chloroform Dibromochloromethane Ethylbenzene Cumene (Isopropylbenzene) m-Xylene Naphthalene n-Butylbenzene n-Propylbenzene o-Xylene p-Isopropyltoluene sec-Butylbenzene Tetrachloroethylene Toluene Trichlorofluoromethane INTERCALCS Page 3 of 4 Attachment A - 30 Feet Below Ground Surface INTERMEDIATE CALCULATIONS SHEET Lp Csource rcrack Qsoil Crack effective diffusion coefficient, Dcrack Acrack Exponent of equivalent foundation Peclet number, exp(Pef)  Cbuilding (cm) 3 (g/m ) (cm) 3 (cm /s) (cm2/s) (cm2) (unitless) (unitless) (g/m 3) 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 1.32E-03 1.31E-03 1.95E-03 1.23E-03 2.32E-03 1.68E-03 8.10E-04 1.49E-03 1.31E-03 1.49E-03 1.34E-03 1.15E-03 1.31E-03 1.50E-03 1.15E-03 1.15E-03 1.10E-03 1.70E-03 1.42E-03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.48E+54 1.46E+55 1.24E+37 7.24E+58 1.65E+31 1.40E+43 2.20E+89 3.33E+48 1.26E+55 3.89E+48 1.59E+54 9.31E+62 1.71E+55 1.53E+48 1.12E+63 8.62E+62 6.96E+65 4.94E+42 7.27E+50 2.13E-05 2.12E-05 3.12E-05 1.98E-05 3.69E-05 2.69E-05 1.31E-05 2.40E-05 2.12E-05 2.40E-05 2.15E-05 1.86E-05 2.11E-05 2.42E-05 1.85E-05 1.86E-05 1.78E-05 2.72E-05 2.29E-05 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Convection path length, Source vapor conc., Crack radius, Average vapor flow rate into bldg., Area of crack, Infinite source indoor attenuation coefficient, Infinite source bldg. conc., Chemical: 1,2,4-Trimethylbenzene 1,3,5-Trimethylbenzene Benzene Bromodichloromethane Carbon disulfide Chloroform Dibromochloromethane Ethylbenzene Cumene (Isopropylbenzene) m-Xylene Naphthalene n-Butylbenzene n-Propylbenzene o-Xylene p-Isopropyltoluene sec-Butylbenzene Tetrachloroethylene Toluene Trichlorofluoromethane END Last Update: December 2014 DTSC Human and Ecological Risk Office DTSC Vapor Intrusion Screening Model Soil Gas INTERCALCS Page 4 of 4 Attachment A - 5 Feet Below Ground Surface USEPA SG-SCREEN Version 2.0, 04/2003 Department of Toxic Substances Control Vapor Intrusion Screening Model - Soil Gas DTSC Modification December 2014 TRC Modification June 2017 Scenario: Residential DATA ENTRY SHEET Soil Gas Concentration Data Reset to Defaults ENTER Chemical CAS No. ENTER Soil gas conc., OR ENTER Soil gas conc., (numbers only, Cg Cg no dashes) (g/m3) (ppmv) Chemical Attenuation Factor (unitless) 1,2,4-Trimethylbenzene 1,3,5-Trimethylbenzene Benzene Bromodichloromethane Carbon disulfide Chloroform Dibromochloromethane Ethylbenzene Cumene (Isopropylbenzene) m-Xylene Naphthalene n-Butylbenzene n-Propylbenzene o-Xylene p-Isopropyltoluene sec-Butylbenzene Tetrachloroethylene Toluene Trichlorofluoromethane 95636 108678 71432 75274 75150 67663 124481 100414 98828 108383 91203 104518 103651 95476 99876 135988 127184 108883 75694 MORE  MORE  ENTER Depth below grade to bottom of enclosed space floor, LF ENTER ENTER ENTER ENTER Soil gas sampling depth below grade, Ls Average soil temperature, TS Vadose zone SCS soil type (used to estimate soil vapor User-defined vadose zone soil vapor permeability, kv (15 or 200 cm) (cm) (oC) permeability) 15 152.4 24 LS ENTER Vandose zone SCS soil type ENTER Vadose zone soil dry bulk density, ENTER Vadose zone soil total porosity, ENTER Vadose zone soil water-filled porosity, Lookup Receptor Parameters NEW=> (cm2) ENTER Average vapor flow rate into bldg. (Leave blank to calculate) bA nV wV Qsoil (g/cm3) (unitless) (cm3/cm3) (L/m) LS 1.62 0.39 0.21 5 ENTER Averaging time for carcinogens, ATC ENTER Averaging time for noncarcinogens, ATNC ENTER ENTER ENTER ENTER Exposure duration, ED Exposure frequency, EF Exposure Time ET Air Exchange Rate ACH (yrs) (yrs) (yrs) (days/yr) (hrs/day) (hour)-1 70 26 26 350 24 (NEW) 0.5 (NEW) Lookup Soil Parameters MORE  OR Residential 2.5E‐04 2.5E‐04 3.6E‐04 2.4E‐04 4.1E‐04 3.1E‐04 1.6E‐04 2.8E‐04 2.5E‐04 2.8E‐04 2.6E‐04 2.2E‐04 2.5E‐04 2.9E‐04 2.2E‐04 2.2E‐04 2.2E‐04 3.2E‐04 2.7E‐04 END Last Update: December 2014 DTSC Human and Ecological Risk Office DTSC Vapor Intrusion Screening Model Soil Gas DATENTER Page 1 of 4 Attachment A - 5 Feet Below Ground Surface CHEMICAL PROPERTIES SHEET Scenario: Residential Diffusivity in air, Da Diffusivity in water, Dw Henry's law constant at reference temperature, H Henry's law constant reference temperature, TR Enthalpy of vaporization at the normal boiling point, Hv,b Normal boiling point, TB Critical temperature, TC Unit risk factor, URF Reference conc., RfC Molecular weight, MW (cm2/s) (cm2/s) (atm-m3/mol) (oC) (cal/mol) (oK) (oK) (g/m3)-1 (mg/m3) (g/mol) Chemical: 6.07E-02 6.02E-02 8.95E-02 5.63E-02 1.06E-01 7.69E-02 3.66E-02 6.85E-02 6.03E-02 6.84E-02 6.05E-02 5.28E-02 6.02E-02 6.89E-02 5.27E-02 5.28E-02 5.05E-02 7.78E-02 6.54E-02 7.92E-06 7.84E-06 1.03E-05 1.07E-05 1.30E-05 1.09E-05 1.06E-05 8.46E-06 7.86E-06 8.44E-06 8.38E-06 7.33E-06 7.83E-06 8.53E-06 7.32E-06 7.34E-06 9.46E-06 9.20E-06 1.00E-05 6.16E-03 8.77E-03 5.55E-03 2.12E-03 1.44E-02 3.67E-03 7.83E-04 7.88E-03 1.15E-02 7.18E-03 4.40E-04 1.59E-02 1.05E-02 5.18E-03 1.10E-02 1.76E-02 1.77E-02 6.64E-03 9.70E-02 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 9,369 9,321 7,342 7,800 6,391 6,988 5,900 8,501 10,335 8,523 10,373 9,290 9,123 8,661 0 88,730 8,288 7,930 5,999 442.30 437.89 353.24 363.15 319.00 334.32 416.14 409.34 425.56 412.27 491.14 456.46 432.20 417.60 450.15 446.50 394.40 383.78 296.70 649.17 637.25 562.16 585.85 552.00 536.40 678.20 617.20 631.10 617.05 748.40 660.50 630.00 630.30 652.00 679.00 620.20 591.79 471.00 0.0E+00 0.0E+00 2.9E-05 3.7E-05 0.0E+00 2.3E-05 2.7E-05 2.5E-06 0.0E+00 0.0E+00 3.4E-05 0.0E+00 0.0E+00 0.0E+00 0.0E+00 0.0E+00 6.1E-06 0.0E+00 0.0E+00 6.0E-02 6.0E-02 3.0E-03 8.0E-02 7.0E-01 9.8E-02 7.0E-02 1.0E+00 4.0E-01 1.0E-01 3.0E-03 2.0E-01 1.0E+00 1.0E-01 0.0E+00 4.0E-01 3.5E-02 5.0E+00 7.0E-01 120.20 120.20 78.11 163.83 76.13 119.38 208.28 106.17 120.19 106.17 128.18 134.22 120.19 106.17 134.20 134.22 165.83 92.14 137.36 1,2,4-Trimethylbenzene 1,3,5-Trimethylbenzene Benzene Bromodichloromethane Carbon disulfide Chloroform Dibromochloromethane Ethylbenzene Cumene (Isopropylbenzene) m-Xylene Naphthalene n-Butylbenzene n-Propylbenzene o-Xylene p-Isopropyltoluene sec-Butylbenzene Tetrachloroethylene Toluene Trichlorofluoromethane END Last Update: December 2014 DTSC Human and Ecological Risk Office DTSC Vapor Intrusion Screening Model Soil Gas CHEMPROPS Page 2 of 4 Attachment A - 5 Feet Below Ground Surface INTERMEDIATE CALCULATIONS SHEET Scenario: Sourcebuilding separation, LT Vadose zone Vadose zone soil effective air-filled total fluid porosity, saturation, a 3 V Vadose zone soil intrinsic permeability, Vadose zone soil relative air permeability, Vadose zone soil effective vapor permeability, Floorwall seam perimeter, Soil gas Residential Bldg. ventilation rate, Ste ki krg kv Xcrack conc. Qbuilding (cm) 3 (cm /cm ) (cm3/cm 3) (cm2) (cm2) (cm2) (cm) (g/m 3) 3 (cm /s) 137.4 137.4 137.4 137.4 137.4 137.4 137.4 137.4 137.4 137.4 137.4 137.4 137.4 137.4 137.4 137.4 137.4 137.4 137.4 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 3.39E+04 3.39E+04 3.39E+04 3.39E+04 3.39E+04 3.39E+04 3.39E+04 3.39E+04 3.39E+04 3.39E+04 3.39E+04 3.39E+04 3.39E+04 3.39E+04 3.39E+04 3.39E+04 3.39E+04 3.39E+04 3.39E+04 Area of enclosed space below grade, Crackto-total area ratio, Crack depth below grade, Enthalpy of vaporization at ave. soil temperature, Henry's law constant at ave. soil temperature, Henry's law constant at ave. soil temperature, Vapor viscosity at ave. soil temperature, Vadose zone effective diffusion coefficient, Diffusion path length, AB  Zcrack Hv,TS HTS H'TS TS Deff V Ld (cm2) (unitless) (cm) (cal/mol) (atm-m3/mol) (unitless) (g/cm-s) (cm2/s) (cm) 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 11,516 11,495 7,977 8,526 6,572 7,407 6,696 9,994 12,447 10,090 12,768 11,671 11,186 10,245 0 106,642 9,410 9,001 5,993 5.77E-03 8.22E-03 5.30E-03 2.02E-03 1.39E-02 3.52E-03 7.54E-04 7.45E-03 1.07E-02 6.78E-03 4.09E-04 1.49E-02 9.85E-03 4.89E-03 1.10E-02 9.60E-03 1.68E-02 6.31E-03 9.38E-02 2.37E-01 3.37E-01 2.18E-01 8.28E-02 5.69E-01 1.44E-01 3.09E-02 3.05E-01 4.39E-01 2.78E-01 1.68E-02 6.10E-01 4.04E-01 2.00E-01 4.51E-01 3.94E-01 6.88E-01 2.59E-01 3.84E+00 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.32E-03 1.31E-03 1.95E-03 1.23E-03 2.32E-03 1.68E-03 8.10E-04 1.49E-03 1.31E-03 1.49E-03 1.34E-03 1.15E-03 1.31E-03 1.50E-03 1.15E-03 1.15E-03 1.10E-03 1.70E-03 1.42E-03 137.4 137.4 137.4 137.4 137.4 137.4 137.4 137.4 137.4 137.4 137.4 137.4 137.4 137.4 137.4 137.4 137.4 137.4 137.4 Last Update: December 2014 DTSC Human and Ecological Risk Office DTSC Vapor Intrusion Screening Model Soil Gas Chemical: 1,2,4-Trimethylbenzene 1,3,5-Trimethylbenzene Benzene Bromodichloromethane Carbon disulfide Chloroform Dibromochloromethane Ethylbenzene Cumene (Isopropylbenzene) m-Xylene Naphthalene n-Butylbenzene n-Propylbenzene o-Xylene p-Isopropyltoluene sec-Butylbenzene Tetrachloroethylene Toluene Trichlorofluoromethane Chemical: 1,2,4-Trimethylbenzene 1,3,5-Trimethylbenzene Benzene Bromodichloromethane Carbon disulfide Chloroform Dibromochloromethane Ethylbenzene Cumene (Isopropylbenzene) m-Xylene Naphthalene n-Butylbenzene n-Propylbenzene o-Xylene p-Isopropyltoluene sec-Butylbenzene Tetrachloroethylene Toluene Trichlorofluoromethane INTERCALCS Page 3 of 4 Attachment A - 5 Feet Below Ground Surface INTERMEDIATE CALCULATIONS SHEET Lp Csource rcrack Qsoil Crack effective diffusion coefficient, Dcrack Acrack Exponent of equivalent foundation Peclet number, exp(Pef)  Cbuilding (cm) 3 (g/m ) (cm) 3 (cm /s) (cm2/s) (cm2) (unitless) (unitless) (g/m 3) 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 1.32E-03 1.31E-03 1.95E-03 1.23E-03 2.32E-03 1.68E-03 8.10E-04 1.49E-03 1.31E-03 1.49E-03 1.34E-03 1.15E-03 1.31E-03 1.50E-03 1.15E-03 1.15E-03 1.10E-03 1.70E-03 1.42E-03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.48E+54 1.46E+55 1.24E+37 7.24E+58 1.65E+31 1.40E+43 2.20E+89 3.33E+48 1.26E+55 3.89E+48 1.59E+54 9.31E+62 1.71E+55 1.53E+48 1.12E+63 8.62E+62 6.96E+65 4.94E+42 7.27E+50 2.55E-04 2.53E-04 3.58E-04 2.38E-04 4.14E-04 3.14E-04 1.62E-04 2.83E-04 2.53E-04 2.83E-04 2.57E-04 2.24E-04 2.53E-04 2.85E-04 2.24E-04 2.24E-04 2.15E-04 3.17E-04 2.72E-04 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Convection path length, Source vapor conc., Crack radius, Average vapor flow rate into bldg., Area of crack, Infinite source indoor attenuation coefficient, Infinite source bldg. conc., Chemical: 1,2,4-Trimethylbenzene 1,3,5-Trimethylbenzene Benzene Bromodichloromethane Carbon disulfide Chloroform Dibromochloromethane Ethylbenzene Cumene (Isopropylbenzene) m-Xylene Naphthalene n-Butylbenzene n-Propylbenzene o-Xylene p-Isopropyltoluene sec-Butylbenzene Tetrachloroethylene Toluene Trichlorofluoromethane END Last Update: December 2014 DTSC Human and Ecological Risk Office DTSC Vapor Intrusion Screening Model Soil Gas INTERCALCS Page 4 of 4 Attachment A - 10 Feet Below Ground Surface USEPA SG-SCREEN Version 2.0, 04/2003 Department of Toxic Substances Control Vapor Intrusion Screening Model - Soil Gas DTSC Modification December 2014 TRC Modification June 2017 Scenario: Residential DATA ENTRY SHEET Soil Gas Concentration Data Reset to Defaults ENTER Chemical CAS No. ENTER Soil gas conc., OR ENTER Soil gas conc., (numbers only, Cg Cg no dashes) (g/m3) (ppmv) Chemical Attenuation Factor (unitless) 1,2,4-Trimethylbenzene 1,3,5-Trimethylbenzene Benzene Bromodichloromethane Carbon disulfide Chloroform Dibromochloromethane Ethylbenzene Cumene (Isopropylbenzene) m-Xylene Naphthalene n-Butylbenzene n-Propylbenzene o-Xylene p-Isopropyltoluene sec-Butylbenzene Tetrachloroethylene Toluene Trichlorofluoromethane 95636 108678 71432 75274 75150 67663 124481 100414 98828 108383 91203 104518 103651 95476 99876 135988 127184 108883 75694 MORE  MORE  ENTER Depth below grade to bottom of enclosed space floor, LF ENTER ENTER ENTER ENTER Soil gas sampling depth below grade, Ls Average soil temperature, TS Vadose zone SCS soil type (used to estimate soil vapor User-defined vadose zone soil vapor permeability, kv (15 or 200 cm) (cm) (oC) permeability) 15 304.8 24 LS ENTER Vandose zone SCS soil type ENTER Vadose zone soil dry bulk density, ENTER Vadose zone soil total porosity, ENTER Vadose zone soil water-filled porosity, Lookup Receptor Parameters NEW=> (cm2) ENTER Average vapor flow rate into bldg. (Leave blank to calculate) bA nV wV Qsoil (g/cm3) (unitless) (cm3/cm3) (L/m) LS 1.62 0.39 0.21 5 ENTER Averaging time for carcinogens, ATC ENTER Averaging time for noncarcinogens, ATNC ENTER ENTER ENTER ENTER Exposure duration, ED Exposure frequency, EF Exposure Time ET Air Exchange Rate ACH (yrs) (yrs) (yrs) (days/yr) (hrs/day) (hour)-1 70 26 26 350 24 (NEW) 0.5 (NEW) Lookup Soil Parameters MORE  OR Residential 1.3E‐04 1.3E‐04 1.8E‐04 1.2E‐04 2.2E‐04 1.6E‐04 8.0E‐05 1.4E‐04 1.3E‐04 1.4E‐04 1.3E‐04 1.1E‐04 1.3E‐04 1.4E‐04 1.1E‐04 1.1E‐04 1.1E‐04 1.6E‐04 1.4E‐04 END Last Update: December 2014 DTSC Human and Ecological Risk Office DTSC Vapor Intrusion Screening Model Soil Gas DATENTER Page 1 of 4 Attachment A - 10 Feet Below Ground Surface CHEMICAL PROPERTIES SHEET Scenario: Residential Diffusivity in air, Da Diffusivity in water, Dw Henry's law constant at reference temperature, H Henry's law constant reference temperature, TR Enthalpy of vaporization at the normal boiling point, Hv,b Normal boiling point, TB Critical temperature, TC Unit risk factor, URF Reference conc., RfC Molecular weight, MW (cm2/s) (cm2/s) (atm-m3/mol) (oC) (cal/mol) (oK) (oK) (g/m3)-1 (mg/m3) (g/mol) Chemical: 6.07E-02 6.02E-02 8.95E-02 5.63E-02 1.06E-01 7.69E-02 3.66E-02 6.85E-02 6.03E-02 6.84E-02 6.05E-02 5.28E-02 6.02E-02 6.89E-02 5.27E-02 5.28E-02 5.05E-02 7.78E-02 6.54E-02 7.92E-06 7.84E-06 1.03E-05 1.07E-05 1.30E-05 1.09E-05 1.06E-05 8.46E-06 7.86E-06 8.44E-06 8.38E-06 7.33E-06 7.83E-06 8.53E-06 7.32E-06 7.34E-06 9.46E-06 9.20E-06 1.00E-05 6.16E-03 8.77E-03 5.55E-03 2.12E-03 1.44E-02 3.67E-03 7.83E-04 7.88E-03 1.15E-02 7.18E-03 4.40E-04 1.59E-02 1.05E-02 5.18E-03 1.10E-02 1.76E-02 1.77E-02 6.64E-03 9.70E-02 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 9,369 9,321 7,342 7,800 6,391 6,988 5,900 8,501 10,335 8,523 10,373 9,290 9,123 8,661 0 88,730 8,288 7,930 5,999 442.30 437.89 353.24 363.15 319.00 334.32 416.14 409.34 425.56 412.27 491.14 456.46 432.20 417.60 450.15 446.50 394.40 383.78 296.70 649.17 637.25 562.16 585.85 552.00 536.40 678.20 617.20 631.10 617.05 748.40 660.50 630.00 630.30 652.00 679.00 620.20 591.79 471.00 0.0E+00 0.0E+00 2.9E-05 3.7E-05 0.0E+00 2.3E-05 2.7E-05 2.5E-06 0.0E+00 0.0E+00 3.4E-05 0.0E+00 0.0E+00 0.0E+00 0.0E+00 0.0E+00 6.1E-06 0.0E+00 0.0E+00 6.0E-02 6.0E-02 3.0E-03 8.0E-02 7.0E-01 9.8E-02 7.0E-02 1.0E+00 4.0E-01 1.0E-01 3.0E-03 2.0E-01 1.0E+00 1.0E-01 0.0E+00 4.0E-01 3.5E-02 5.0E+00 7.0E-01 120.20 120.20 78.11 163.83 76.13 119.38 208.28 106.17 120.19 106.17 128.18 134.22 120.19 106.17 134.20 134.22 165.83 92.14 137.36 1,2,4-Trimethylbenzene 1,3,5-Trimethylbenzene Benzene Bromodichloromethane Carbon disulfide Chloroform Dibromochloromethane Ethylbenzene Cumene (Isopropylbenzene) m-Xylene Naphthalene n-Butylbenzene n-Propylbenzene o-Xylene p-Isopropyltoluene sec-Butylbenzene Tetrachloroethylene Toluene Trichlorofluoromethane END Last Update: December 2014 DTSC Human and Ecological Risk Office DTSC Vapor Intrusion Screening Model Soil Gas CHEMPROPS Page 2 of 4 Attachment A - 10 Feet Below Ground Surface INTERMEDIATE CALCULATIONS SHEET Scenario: Sourcebuilding separation, LT Vadose zone Vadose zone soil effective air-filled total fluid porosity, saturation, a 3 V Vadose zone soil intrinsic permeability, Vadose zone soil relative air permeability, Vadose zone soil effective vapor permeability, Floorwall seam perimeter, Soil gas Residential Bldg. ventilation rate, Ste ki krg kv Xcrack conc. Qbuilding (cm) 3 (cm /cm ) (cm3/cm 3) (cm2) (cm2) (cm2) (cm) (g/m 3) 3 (cm /s) 289.8 289.8 289.8 289.8 289.8 289.8 289.8 289.8 289.8 289.8 289.8 289.8 289.8 289.8 289.8 289.8 289.8 289.8 289.8 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 3.39E+04 3.39E+04 3.39E+04 3.39E+04 3.39E+04 3.39E+04 3.39E+04 3.39E+04 3.39E+04 3.39E+04 3.39E+04 3.39E+04 3.39E+04 3.39E+04 3.39E+04 3.39E+04 3.39E+04 3.39E+04 3.39E+04 Area of enclosed space below grade, Crackto-total area ratio, Crack depth below grade, Enthalpy of vaporization at ave. soil temperature, Henry's law constant at ave. soil temperature, Henry's law constant at ave. soil temperature, Vapor viscosity at ave. soil temperature, Vadose zone effective diffusion coefficient, Diffusion path length, AB  Zcrack Hv,TS HTS H'TS TS Deff V Ld (cm2) (unitless) (cm) (cal/mol) (atm-m3/mol) (unitless) (g/cm-s) (cm2/s) (cm) 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 11,516 11,495 7,977 8,526 6,572 7,407 6,696 9,994 12,447 10,090 12,768 11,671 11,186 10,245 0 106,642 9,410 9,001 5,993 5.77E-03 8.22E-03 5.30E-03 2.02E-03 1.39E-02 3.52E-03 7.54E-04 7.45E-03 1.07E-02 6.78E-03 4.09E-04 1.49E-02 9.85E-03 4.89E-03 1.10E-02 9.60E-03 1.68E-02 6.31E-03 9.38E-02 2.37E-01 3.37E-01 2.18E-01 8.28E-02 5.69E-01 1.44E-01 3.09E-02 3.05E-01 4.39E-01 2.78E-01 1.68E-02 6.10E-01 4.04E-01 2.00E-01 4.51E-01 3.94E-01 6.88E-01 2.59E-01 3.84E+00 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.32E-03 1.31E-03 1.95E-03 1.23E-03 2.32E-03 1.68E-03 8.10E-04 1.49E-03 1.31E-03 1.49E-03 1.34E-03 1.15E-03 1.31E-03 1.50E-03 1.15E-03 1.15E-03 1.10E-03 1.70E-03 1.42E-03 289.8 289.8 289.8 289.8 289.8 289.8 289.8 289.8 289.8 289.8 289.8 289.8 289.8 289.8 289.8 289.8 289.8 289.8 289.8 Last Update: December 2014 DTSC Human and Ecological Risk Office DTSC Vapor Intrusion Screening Model Soil Gas Chemical: 1,2,4-Trimethylbenzene 1,3,5-Trimethylbenzene Benzene Bromodichloromethane Carbon disulfide Chloroform Dibromochloromethane Ethylbenzene Cumene (Isopropylbenzene) m-Xylene Naphthalene n-Butylbenzene n-Propylbenzene o-Xylene p-Isopropyltoluene sec-Butylbenzene Tetrachloroethylene Toluene Trichlorofluoromethane Chemical: 1,2,4-Trimethylbenzene 1,3,5-Trimethylbenzene Benzene Bromodichloromethane Carbon disulfide Chloroform Dibromochloromethane Ethylbenzene Cumene (Isopropylbenzene) m-Xylene Naphthalene n-Butylbenzene n-Propylbenzene o-Xylene p-Isopropyltoluene sec-Butylbenzene Tetrachloroethylene Toluene Trichlorofluoromethane INTERCALCS Page 3 of 4 Attachment A - 10 Feet Below Ground Surface INTERMEDIATE CALCULATIONS SHEET Lp Csource rcrack Qsoil Crack effective diffusion coefficient, Dcrack Acrack Exponent of equivalent foundation Peclet number, exp(Pef)  Cbuilding (cm) 3 (g/m ) (cm) 3 (cm /s) (cm2/s) (cm2) (unitless) (unitless) (g/m 3) 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 1.32E-03 1.31E-03 1.95E-03 1.23E-03 2.32E-03 1.68E-03 8.10E-04 1.49E-03 1.31E-03 1.49E-03 1.34E-03 1.15E-03 1.31E-03 1.50E-03 1.15E-03 1.15E-03 1.10E-03 1.70E-03 1.42E-03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.48E+54 1.46E+55 1.24E+37 7.24E+58 1.65E+31 1.40E+43 2.20E+89 3.33E+48 1.26E+55 3.89E+48 1.59E+54 9.31E+62 1.71E+55 1.53E+48 1.12E+63 8.62E+62 6.96E+65 4.94E+42 7.27E+50 1.28E-04 1.27E-04 1.84E-04 1.19E-04 2.15E-04 1.60E-04 7.98E-05 1.43E-04 1.27E-04 1.43E-04 1.29E-04 1.12E-04 1.27E-04 1.44E-04 1.12E-04 1.12E-04 1.07E-04 1.61E-04 1.37E-04 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Convection path length, Source vapor conc., Crack radius, Average vapor flow rate into bldg., Area of crack, Infinite source indoor attenuation coefficient, Infinite source bldg. conc., Chemical: 1,2,4-Trimethylbenzene 1,3,5-Trimethylbenzene Benzene Bromodichloromethane Carbon disulfide Chloroform Dibromochloromethane Ethylbenzene Cumene (Isopropylbenzene) m-Xylene Naphthalene n-Butylbenzene n-Propylbenzene o-Xylene p-Isopropyltoluene sec-Butylbenzene Tetrachloroethylene Toluene Trichlorofluoromethane END Last Update: December 2014 DTSC Human and Ecological Risk Office DTSC Vapor Intrusion Screening Model Soil Gas INTERCALCS Page 4 of 4 Attachment A - 15 Feet Below Ground Surface USEPA SG-SCREEN Version 2.0, 04/2003 Department of Toxic Substances Control Vapor Intrusion Screening Model - Soil Gas DTSC Modification December 2014 TRC Modification June 2017 Scenario: Residential DATA ENTRY SHEET Soil Gas Concentration Data Reset to Defaults ENTER Chemical CAS No. ENTER Soil gas conc., OR ENTER Soil gas conc., (numbers only, Cg Cg no dashes) (g/m3) (ppmv) Chemical Attenuation Factor (unitless) 1,2,4-Trimethylbenzene 1,3,5-Trimethylbenzene Benzene Bromodichloromethane Carbon disulfide Chloroform Dibromochloromethane Ethylbenzene Cumene (Isopropylbenzene) m-Xylene Naphthalene n-Butylbenzene n-Propylbenzene o-Xylene p-Isopropyltoluene sec-Butylbenzene Tetrachloroethylene Toluene Trichlorofluoromethane 95636 108678 71432 75274 75150 67663 124481 100414 98828 108383 91203 104518 103651 95476 99876 135988 127184 108883 75694 MORE  MORE  ENTER Depth below grade to bottom of enclosed space floor, LF ENTER ENTER ENTER ENTER Soil gas sampling depth below grade, Ls Average soil temperature, TS Vadose zone SCS soil type (used to estimate soil vapor User-defined vadose zone soil vapor permeability, kv (15 or 200 cm) (cm) (oC) permeability) 15 457.2 24 LS ENTER Vandose zone SCS soil type ENTER Vadose zone soil dry bulk density, ENTER Vadose zone soil total porosity, ENTER Vadose zone soil water-filled porosity, Lookup Receptor Parameters NEW=> (cm2) ENTER Average vapor flow rate into bldg. (Leave blank to calculate) bA nV wV Qsoil (g/cm3) (unitless) (cm3/cm3) (L/m) LS 1.62 0.39 0.21 5 ENTER Averaging time for carcinogens, ATC ENTER Averaging time for noncarcinogens, ATNC ENTER ENTER ENTER ENTER Exposure duration, ED Exposure frequency, EF Exposure Time ET Air Exchange Rate ACH (yrs) (yrs) (yrs) (days/yr) (hrs/day) (hour)-1 70 26 26 350 24 (NEW) 0.5 (NEW) Lookup Soil Parameters MORE  OR Residential 8.5E‐05 8.5E‐05 1.2E‐04 7.9E‐05 1.5E‐04 1.1E‐04 5.3E‐05 9.6E‐05 8.5E‐05 9.6E‐05 8.6E‐05 7.4E‐05 8.4E‐05 9.6E‐05 7.4E‐05 7.4E‐05 7.1E‐05 1.1E‐04 9.1E‐05 END Last Update: December 2014 DTSC Human and Ecological Risk Office DTSC Vapor Intrusion Screening Model Soil Gas DATENTER Page 1 of 4 Attachment A - 15 Feet Below Ground Surface CHEMICAL PROPERTIES SHEET Scenario: Residential Diffusivity in air, Da Diffusivity in water, Dw Henry's law constant at reference temperature, H Henry's law constant reference temperature, TR Enthalpy of vaporization at the normal boiling point, Hv,b Normal boiling point, TB Critical temperature, TC Unit risk factor, URF Reference conc., RfC Molecular weight, MW (cm2/s) (cm2/s) (atm-m3/mol) (oC) (cal/mol) (oK) (oK) (g/m3)-1 (mg/m3) (g/mol) Chemical: 6.07E-02 6.02E-02 8.95E-02 5.63E-02 1.06E-01 7.69E-02 3.66E-02 6.85E-02 6.03E-02 6.84E-02 6.05E-02 5.28E-02 6.02E-02 6.89E-02 5.27E-02 5.28E-02 5.05E-02 7.78E-02 6.54E-02 7.92E-06 7.84E-06 1.03E-05 1.07E-05 1.30E-05 1.09E-05 1.06E-05 8.46E-06 7.86E-06 8.44E-06 8.38E-06 7.33E-06 7.83E-06 8.53E-06 7.32E-06 7.34E-06 9.46E-06 9.20E-06 1.00E-05 6.16E-03 8.77E-03 5.55E-03 2.12E-03 1.44E-02 3.67E-03 7.83E-04 7.88E-03 1.15E-02 7.18E-03 4.40E-04 1.59E-02 1.05E-02 5.18E-03 1.10E-02 1.76E-02 1.77E-02 6.64E-03 9.70E-02 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 9,369 9,321 7,342 7,800 6,391 6,988 5,900 8,501 10,335 8,523 10,373 9,290 9,123 8,661 0 88,730 8,288 7,930 5,999 442.30 437.89 353.24 363.15 319.00 334.32 416.14 409.34 425.56 412.27 491.14 456.46 432.20 417.60 450.15 446.50 394.40 383.78 296.70 649.17 637.25 562.16 585.85 552.00 536.40 678.20 617.20 631.10 617.05 748.40 660.50 630.00 630.30 652.00 679.00 620.20 591.79 471.00 0.0E+00 0.0E+00 2.9E-05 3.7E-05 0.0E+00 2.3E-05 2.7E-05 2.5E-06 0.0E+00 0.0E+00 3.4E-05 0.0E+00 0.0E+00 0.0E+00 0.0E+00 0.0E+00 6.1E-06 0.0E+00 0.0E+00 6.0E-02 6.0E-02 3.0E-03 8.0E-02 7.0E-01 9.8E-02 7.0E-02 1.0E+00 4.0E-01 1.0E-01 3.0E-03 2.0E-01 1.0E+00 1.0E-01 0.0E+00 4.0E-01 3.5E-02 5.0E+00 7.0E-01 120.20 120.20 78.11 163.83 76.13 119.38 208.28 106.17 120.19 106.17 128.18 134.22 120.19 106.17 134.20 134.22 165.83 92.14 137.36 1,2,4-Trimethylbenzene 1,3,5-Trimethylbenzene Benzene Bromodichloromethane Carbon disulfide Chloroform Dibromochloromethane Ethylbenzene Cumene (Isopropylbenzene) m-Xylene Naphthalene n-Butylbenzene n-Propylbenzene o-Xylene p-Isopropyltoluene sec-Butylbenzene Tetrachloroethylene Toluene Trichlorofluoromethane END Last Update: December 2014 DTSC Human and Ecological Risk Office DTSC Vapor Intrusion Screening Model Soil Gas CHEMPROPS Page 2 of 4 Attachment A - 15 Feet Below Ground Surface INTERMEDIATE CALCULATIONS SHEET Scenario: Sourcebuilding separation, LT Vadose zone Vadose zone soil effective air-filled total fluid porosity, saturation, a 3 V Vadose zone soil intrinsic permeability, Vadose zone soil relative air permeability, Vadose zone soil effective vapor permeability, Floorwall seam perimeter, Soil gas Residential Bldg. ventilation rate, Ste ki krg kv Xcrack conc. Qbuilding (cm) 3 (cm /cm ) (cm3/cm 3) (cm2) (cm2) (cm2) (cm) (g/m 3) 3 (cm /s) 442.2 442.2 442.2 442.2 442.2 442.2 442.2 442.2 442.2 442.2 442.2 442.2 442.2 442.2 442.2 442.2 442.2 442.2 442.2 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 3.39E+04 3.39E+04 3.39E+04 3.39E+04 3.39E+04 3.39E+04 3.39E+04 3.39E+04 3.39E+04 3.39E+04 3.39E+04 3.39E+04 3.39E+04 3.39E+04 3.39E+04 3.39E+04 3.39E+04 3.39E+04 3.39E+04 Area of enclosed space below grade, Crackto-total area ratio, Crack depth below grade, Enthalpy of vaporization at ave. soil temperature, Henry's law constant at ave. soil temperature, Henry's law constant at ave. soil temperature, Vapor viscosity at ave. soil temperature, Vadose zone effective diffusion coefficient, Diffusion path length, AB  Zcrack Hv,TS HTS H'TS TS Deff V Ld (cm2) (unitless) (cm) (cal/mol) (atm-m3/mol) (unitless) (g/cm-s) (cm2/s) (cm) 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 11,516 11,495 7,977 8,526 6,572 7,407 6,696 9,994 12,447 10,090 12,768 11,671 11,186 10,245 0 106,642 9,410 9,001 5,993 5.77E-03 8.22E-03 5.30E-03 2.02E-03 1.39E-02 3.52E-03 7.54E-04 7.45E-03 1.07E-02 6.78E-03 4.09E-04 1.49E-02 9.85E-03 4.89E-03 1.10E-02 9.60E-03 1.68E-02 6.31E-03 9.38E-02 2.37E-01 3.37E-01 2.18E-01 8.28E-02 5.69E-01 1.44E-01 3.09E-02 3.05E-01 4.39E-01 2.78E-01 1.68E-02 6.10E-01 4.04E-01 2.00E-01 4.51E-01 3.94E-01 6.88E-01 2.59E-01 3.84E+00 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.32E-03 1.31E-03 1.95E-03 1.23E-03 2.32E-03 1.68E-03 8.10E-04 1.49E-03 1.31E-03 1.49E-03 1.34E-03 1.15E-03 1.31E-03 1.50E-03 1.15E-03 1.15E-03 1.10E-03 1.70E-03 1.42E-03 442.2 442.2 442.2 442.2 442.2 442.2 442.2 442.2 442.2 442.2 442.2 442.2 442.2 442.2 442.2 442.2 442.2 442.2 442.2 Last Update: December 2014 DTSC Human and Ecological Risk Office DTSC Vapor Intrusion Screening Model Soil Gas Chemical: 1,2,4-Trimethylbenzene 1,3,5-Trimethylbenzene Benzene Bromodichloromethane Carbon disulfide Chloroform Dibromochloromethane Ethylbenzene Cumene (Isopropylbenzene) m-Xylene Naphthalene n-Butylbenzene n-Propylbenzene o-Xylene p-Isopropyltoluene sec-Butylbenzene Tetrachloroethylene Toluene Trichlorofluoromethane Chemical: 1,2,4-Trimethylbenzene 1,3,5-Trimethylbenzene Benzene Bromodichloromethane Carbon disulfide Chloroform Dibromochloromethane Ethylbenzene Cumene (Isopropylbenzene) m-Xylene Naphthalene n-Butylbenzene n-Propylbenzene o-Xylene p-Isopropyltoluene sec-Butylbenzene Tetrachloroethylene Toluene Trichlorofluoromethane INTERCALCS Page 3 of 4 Attachment A - 15 Feet Below Ground Surface INTERMEDIATE CALCULATIONS SHEET Lp Csource rcrack Qsoil Crack effective diffusion coefficient, Dcrack Acrack Exponent of equivalent foundation Peclet number, exp(Pef)  Cbuilding (cm) 3 (g/m ) (cm) 3 (cm /s) (cm2/s) (cm2) (unitless) (unitless) (g/m 3) 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 1.32E-03 1.31E-03 1.95E-03 1.23E-03 2.32E-03 1.68E-03 8.10E-04 1.49E-03 1.31E-03 1.49E-03 1.34E-03 1.15E-03 1.31E-03 1.50E-03 1.15E-03 1.15E-03 1.10E-03 1.70E-03 1.42E-03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.48E+54 1.46E+55 1.24E+37 7.24E+58 1.65E+31 1.40E+43 2.20E+89 3.33E+48 1.26E+55 3.89E+48 1.59E+54 9.31E+62 1.71E+55 1.53E+48 1.12E+63 8.62E+62 6.96E+65 4.94E+42 7.27E+50 8.52E-05 8.46E-05 1.24E-04 7.94E-05 1.46E-04 1.07E-04 5.29E-05 9.57E-05 8.46E-05 9.55E-05 8.60E-05 7.44E-05 8.44E-05 9.63E-05 7.43E-05 7.44E-05 7.12E-05 1.08E-04 9.14E-05 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Convection path length, Source vapor conc., Crack radius, Average vapor flow rate into bldg., Area of crack, Infinite source indoor attenuation coefficient, Infinite source bldg. conc., Chemical: 1,2,4-Trimethylbenzene 1,3,5-Trimethylbenzene Benzene Bromodichloromethane Carbon disulfide Chloroform Dibromochloromethane Ethylbenzene Cumene (Isopropylbenzene) m-Xylene Naphthalene n-Butylbenzene n-Propylbenzene o-Xylene p-Isopropyltoluene sec-Butylbenzene Tetrachloroethylene Toluene Trichlorofluoromethane END Last Update: December 2014 DTSC Human and Ecological Risk Office DTSC Vapor Intrusion Screening Model Soil Gas INTERCALCS Page 4 of 4 Attachment A - 20 Feet Below Ground Surface USEPA SG-SCREEN Version 2.0, 04/2003 Department of Toxic Substances Control Vapor Intrusion Screening Model - Soil Gas DTSC Modification December 2014 TRC Modification June 2017 Scenario: Residential DATA ENTRY SHEET Soil Gas Concentration Data Reset to Defaults ENTER Chemical CAS No. ENTER Soil gas conc., OR ENTER Soil gas conc., (numbers only, Cg Cg no dashes) (g/m3) (ppmv) Chemical Attenuation Factor (unitless) 1,2,4-Trimethylbenzene 1,3,5-Trimethylbenzene Benzene Bromodichloromethane Carbon disulfide Chloroform Dibromochloromethane Ethylbenzene Cumene (Isopropylbenzene) m-Xylene Naphthalene n-Butylbenzene n-Propylbenzene o-Xylene p-Isopropyltoluene sec-Butylbenzene Tetrachloroethylene Toluene Trichlorofluoromethane 95636 108678 71432 75274 75150 67663 124481 100414 98828 108383 91203 104518 103651 95476 99876 135988 127184 108883 75694 MORE  MORE  ENTER Depth below grade to bottom of enclosed space floor, LF ENTER ENTER ENTER ENTER Soil gas sampling depth below grade, Ls Average soil temperature, TS Vadose zone SCS soil type (used to estimate soil vapor User-defined vadose zone soil vapor permeability, kv (15 or 200 cm) (cm) (oC) permeability) 15 609.6 24 LS ENTER Vandose zone SCS soil type ENTER Vadose zone soil dry bulk density, ENTER Vadose zone soil total porosity, ENTER Vadose zone soil water-filled porosity, Lookup Receptor Parameters NEW=> (cm2) ENTER Average vapor flow rate into bldg. (Leave blank to calculate) bA nV wV Qsoil (g/cm3) (unitless) (cm3/cm3) (L/m) LS 1.62 0.39 0.21 5 ENTER Averaging time for carcinogens, ATC ENTER Averaging time for noncarcinogens, ATNC ENTER ENTER ENTER ENTER Exposure duration, ED Exposure frequency, EF Exposure Time ET Air Exchange Rate ACH (yrs) (yrs) (yrs) (days/yr) (hrs/day) (hour)-1 70 26 26 350 24 (NEW) 0.5 (NEW) Lookup Soil Parameters MORE  OR Residential 6.4E‐05 6.3E‐05 9.3E‐05 6.0E‐05 1.1E‐04 8.1E‐05 4.0E‐05 7.2E‐05 6.4E‐05 7.2E‐05 6.5E‐05 5.6E‐05 6.3E‐05 7.2E‐05 5.6E‐05 5.6E‐05 5.3E‐05 8.1E‐05 6.9E‐05 END Last Update: December 2014 DTSC Human and Ecological Risk Office DTSC Vapor Intrusion Screening Model Soil Gas DATENTER Page 1 of 4 Attachment A - 20 Feet Below Ground Surface CHEMICAL PROPERTIES SHEET Scenario: Residential Diffusivity in air, Da Diffusivity in water, Dw Henry's law constant at reference temperature, H Henry's law constant reference temperature, TR Enthalpy of vaporization at the normal boiling point, Hv,b Normal boiling point, TB Critical temperature, TC Unit risk factor, URF Reference conc., RfC Molecular weight, MW (cm2/s) (cm2/s) (atm-m3/mol) (oC) (cal/mol) (oK) (oK) (g/m3)-1 (mg/m3) (g/mol) Chemical: 6.07E-02 6.02E-02 8.95E-02 5.63E-02 1.06E-01 7.69E-02 3.66E-02 6.85E-02 6.03E-02 6.84E-02 6.05E-02 5.28E-02 6.02E-02 6.89E-02 5.27E-02 5.28E-02 5.05E-02 7.78E-02 6.54E-02 7.92E-06 7.84E-06 1.03E-05 1.07E-05 1.30E-05 1.09E-05 1.06E-05 8.46E-06 7.86E-06 8.44E-06 8.38E-06 7.33E-06 7.83E-06 8.53E-06 7.32E-06 7.34E-06 9.46E-06 9.20E-06 1.00E-05 6.16E-03 8.77E-03 5.55E-03 2.12E-03 1.44E-02 3.67E-03 7.83E-04 7.88E-03 1.15E-02 7.18E-03 4.40E-04 1.59E-02 1.05E-02 5.18E-03 1.10E-02 1.76E-02 1.77E-02 6.64E-03 9.70E-02 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 9,369 9,321 7,342 7,800 6,391 6,988 5,900 8,501 10,335 8,523 10,373 9,290 9,123 8,661 0 88,730 8,288 7,930 5,999 442.30 437.89 353.24 363.15 319.00 334.32 416.14 409.34 425.56 412.27 491.14 456.46 432.20 417.60 450.15 446.50 394.40 383.78 296.70 649.17 637.25 562.16 585.85 552.00 536.40 678.20 617.20 631.10 617.05 748.40 660.50 630.00 630.30 652.00 679.00 620.20 591.79 471.00 0.0E+00 0.0E+00 2.9E-05 3.7E-05 0.0E+00 2.3E-05 2.7E-05 2.5E-06 0.0E+00 0.0E+00 3.4E-05 0.0E+00 0.0E+00 0.0E+00 0.0E+00 0.0E+00 6.1E-06 0.0E+00 0.0E+00 6.0E-02 6.0E-02 3.0E-03 8.0E-02 7.0E-01 9.8E-02 7.0E-02 1.0E+00 4.0E-01 1.0E-01 3.0E-03 2.0E-01 1.0E+00 1.0E-01 0.0E+00 4.0E-01 3.5E-02 5.0E+00 7.0E-01 120.20 120.20 78.11 163.83 76.13 119.38 208.28 106.17 120.19 106.17 128.18 134.22 120.19 106.17 134.20 134.22 165.83 92.14 137.36 1,2,4-Trimethylbenzene 1,3,5-Trimethylbenzene Benzene Bromodichloromethane Carbon disulfide Chloroform Dibromochloromethane Ethylbenzene Cumene (Isopropylbenzene) m-Xylene Naphthalene n-Butylbenzene n-Propylbenzene o-Xylene p-Isopropyltoluene sec-Butylbenzene Tetrachloroethylene Toluene Trichlorofluoromethane END Last Update: December 2014 DTSC Human and Ecological Risk Office DTSC Vapor Intrusion Screening Model Soil Gas CHEMPROPS Page 2 of 4 Attachment A - 20 Feet Below Ground Surface INTERMEDIATE CALCULATIONS SHEET Scenario: Sourcebuilding separation, LT Vadose zone Vadose zone soil effective air-filled total fluid porosity, saturation, a 3 V Vadose zone soil intrinsic permeability, Vadose zone soil relative air permeability, Vadose zone soil effective vapor permeability, Floorwall seam perimeter, Soil gas Residential Bldg. ventilation rate, Ste ki krg kv Xcrack conc. Qbuilding (cm) 3 (cm /cm ) (cm3/cm 3) (cm2) (cm2) (cm2) (cm) (g/m 3) 3 (cm /s) 594.6 594.6 594.6 594.6 594.6 594.6 594.6 594.6 594.6 594.6 594.6 594.6 594.6 594.6 594.6 594.6 594.6 594.6 594.6 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 3.39E+04 3.39E+04 3.39E+04 3.39E+04 3.39E+04 3.39E+04 3.39E+04 3.39E+04 3.39E+04 3.39E+04 3.39E+04 3.39E+04 3.39E+04 3.39E+04 3.39E+04 3.39E+04 3.39E+04 3.39E+04 3.39E+04 Area of enclosed space below grade, Crackto-total area ratio, Crack depth below grade, Enthalpy of vaporization at ave. soil temperature, Henry's law constant at ave. soil temperature, Henry's law constant at ave. soil temperature, Vapor viscosity at ave. soil temperature, Vadose zone effective diffusion coefficient, Diffusion path length, AB  Zcrack Hv,TS HTS H'TS TS Deff V Ld (cm2) (unitless) (cm) (cal/mol) (atm-m3/mol) (unitless) (g/cm-s) (cm2/s) (cm) 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 11,516 11,495 7,977 8,526 6,572 7,407 6,696 9,994 12,447 10,090 12,768 11,671 11,186 10,245 0 106,642 9,410 9,001 5,993 5.77E-03 8.22E-03 5.30E-03 2.02E-03 1.39E-02 3.52E-03 7.54E-04 7.45E-03 1.07E-02 6.78E-03 4.09E-04 1.49E-02 9.85E-03 4.89E-03 1.10E-02 9.60E-03 1.68E-02 6.31E-03 9.38E-02 2.37E-01 3.37E-01 2.18E-01 8.28E-02 5.69E-01 1.44E-01 3.09E-02 3.05E-01 4.39E-01 2.78E-01 1.68E-02 6.10E-01 4.04E-01 2.00E-01 4.51E-01 3.94E-01 6.88E-01 2.59E-01 3.84E+00 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.32E-03 1.31E-03 1.95E-03 1.23E-03 2.32E-03 1.68E-03 8.10E-04 1.49E-03 1.31E-03 1.49E-03 1.34E-03 1.15E-03 1.31E-03 1.50E-03 1.15E-03 1.15E-03 1.10E-03 1.70E-03 1.42E-03 594.6 594.6 594.6 594.6 594.6 594.6 594.6 594.6 594.6 594.6 594.6 594.6 594.6 594.6 594.6 594.6 594.6 594.6 594.6 Last Update: December 2014 DTSC Human and Ecological Risk Office DTSC Vapor Intrusion Screening Model Soil Gas Chemical: 1,2,4-Trimethylbenzene 1,3,5-Trimethylbenzene Benzene Bromodichloromethane Carbon disulfide Chloroform Dibromochloromethane Ethylbenzene Cumene (Isopropylbenzene) m-Xylene Naphthalene n-Butylbenzene n-Propylbenzene o-Xylene p-Isopropyltoluene sec-Butylbenzene Tetrachloroethylene Toluene Trichlorofluoromethane Chemical: 1,2,4-Trimethylbenzene 1,3,5-Trimethylbenzene Benzene Bromodichloromethane Carbon disulfide Chloroform Dibromochloromethane Ethylbenzene Cumene (Isopropylbenzene) m-Xylene Naphthalene n-Butylbenzene n-Propylbenzene o-Xylene p-Isopropyltoluene sec-Butylbenzene Tetrachloroethylene Toluene Trichlorofluoromethane INTERCALCS Page 3 of 4 Attachment A - 20 Feet Below Ground Surface INTERMEDIATE CALCULATIONS SHEET Lp Csource rcrack Qsoil Crack effective diffusion coefficient, Dcrack Acrack Exponent of equivalent foundation Peclet number, exp(Pef)  Cbuilding (cm) 3 (g/m ) (cm) 3 (cm /s) (cm2/s) (cm2) (unitless) (unitless) (g/m 3) 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 1.32E-03 1.31E-03 1.95E-03 1.23E-03 2.32E-03 1.68E-03 8.10E-04 1.49E-03 1.31E-03 1.49E-03 1.34E-03 1.15E-03 1.31E-03 1.50E-03 1.15E-03 1.15E-03 1.10E-03 1.70E-03 1.42E-03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.48E+54 1.46E+55 1.24E+37 7.24E+58 1.65E+31 1.40E+43 2.20E+89 3.33E+48 1.26E+55 3.89E+48 1.59E+54 9.31E+62 1.71E+55 1.53E+48 1.12E+63 8.62E+62 6.96E+65 4.94E+42 7.27E+50 6.39E-05 6.34E-05 9.32E-05 5.96E-05 1.10E-04 8.05E-05 3.96E-05 7.19E-05 6.35E-05 7.18E-05 6.45E-05 5.58E-05 6.34E-05 7.24E-05 5.57E-05 5.58E-05 5.34E-05 8.14E-05 6.87E-05 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Convection path length, Source vapor conc., Crack radius, Average vapor flow rate into bldg., Area of crack, Infinite source indoor attenuation coefficient, Infinite source bldg. conc., Chemical: 1,2,4-Trimethylbenzene 1,3,5-Trimethylbenzene Benzene Bromodichloromethane Carbon disulfide Chloroform Dibromochloromethane Ethylbenzene Cumene (Isopropylbenzene) m-Xylene Naphthalene n-Butylbenzene n-Propylbenzene o-Xylene p-Isopropyltoluene sec-Butylbenzene Tetrachloroethylene Toluene Trichlorofluoromethane END Last Update: December 2014 DTSC Human and Ecological Risk Office DTSC Vapor Intrusion Screening Model Soil Gas INTERCALCS Page 4 of 4 Attachment A - 25 Feet Below Ground Surface USEPA SG-SCREEN Version 2.0, 04/2003 Department of Toxic Substances Control Vapor Intrusion Screening Model - Soil Gas DTSC Modification December 2014 TRC Modification June 2017 Scenario: Residential DATA ENTRY SHEET Soil Gas Concentration Data Reset to Defaults ENTER Chemical CAS No. ENTER Soil gas conc., OR ENTER Soil gas conc., (numbers only, Cg Cg no dashes) (g/m3) (ppmv) Chemical Attenuation Factor (unitless) 1,2,4-Trimethylbenzene 1,3,5-Trimethylbenzene Benzene Bromodichloromethane Carbon disulfide Chloroform Dibromochloromethane Ethylbenzene Cumene (Isopropylbenzene) m-Xylene Naphthalene n-Butylbenzene n-Propylbenzene o-Xylene p-Isopropyltoluene sec-Butylbenzene Tetrachloroethylene Toluene Trichlorofluoromethane 95636 108678 71432 75274 75150 67663 124481 100414 98828 108383 91203 104518 103651 95476 99876 135988 127184 108883 75694 MORE  MORE  ENTER Depth below grade to bottom of enclosed space floor, LF ENTER ENTER ENTER ENTER Soil gas sampling depth below grade, Ls Average soil temperature, TS Vadose zone SCS soil type (used to estimate soil vapor User-defined vadose zone soil vapor permeability, kv (15 or 200 cm) (cm) (oC) permeability) 15 762 24 LS ENTER Vandose zone SCS soil type ENTER Vadose zone soil dry bulk density, ENTER Vadose zone soil total porosity, ENTER Vadose zone soil water-filled porosity, Lookup Receptor Parameters NEW=> (cm2) ENTER Average vapor flow rate into bldg. (Leave blank to calculate) bA nV wV Qsoil (g/cm3) (unitless) (cm3/cm3) (L/m) LS 1.62 0.39 0.21 5 ENTER Averaging time for carcinogens, ATC ENTER Averaging time for noncarcinogens, ATNC ENTER ENTER ENTER ENTER Exposure duration, ED Exposure frequency, EF Exposure Time ET Air Exchange Rate ACH (yrs) (yrs) (yrs) (days/yr) (hrs/day) (hour)-1 70 26 26 350 24 (NEW) 0.5 (NEW) Lookup Soil Parameters MORE  OR Residential 5.1E‐05 5.1E‐05 7.5E‐05 4.8E‐05 8.8E‐05 6.5E‐05 3.2E‐05 5.8E‐05 5.1E‐05 5.7E‐05 5.2E‐05 4.5E‐05 5.1E‐05 5.8E‐05 4.5E‐05 4.5E‐05 4.3E‐05 6.5E‐05 5.5E‐05 END Last Update: December 2014 DTSC Human and Ecological Risk Office DTSC Vapor Intrusion Screening Model Soil Gas DATENTER Page 1 of 4 Attachment A - 25 Feet Below Ground Surface CHEMICAL PROPERTIES SHEET Scenario: Residential Diffusivity in air, Da Diffusivity in water, Dw Henry's law constant at reference temperature, H Henry's law constant reference temperature, TR Enthalpy of vaporization at the normal boiling point, Hv,b Normal boiling point, TB Critical temperature, TC Unit risk factor, URF Reference conc., RfC Molecular weight, MW (cm2/s) (cm2/s) (atm-m3/mol) (oC) (cal/mol) (oK) (oK) (g/m3)-1 (mg/m3) (g/mol) Chemical: 6.07E-02 6.02E-02 8.95E-02 5.63E-02 1.06E-01 7.69E-02 3.66E-02 6.85E-02 6.03E-02 6.84E-02 6.05E-02 5.28E-02 6.02E-02 6.89E-02 5.27E-02 5.28E-02 5.05E-02 7.78E-02 6.54E-02 7.92E-06 7.84E-06 1.03E-05 1.07E-05 1.30E-05 1.09E-05 1.06E-05 8.46E-06 7.86E-06 8.44E-06 8.38E-06 7.33E-06 7.83E-06 8.53E-06 7.32E-06 7.34E-06 9.46E-06 9.20E-06 1.00E-05 6.16E-03 8.77E-03 5.55E-03 2.12E-03 1.44E-02 3.67E-03 7.83E-04 7.88E-03 1.15E-02 7.18E-03 4.40E-04 1.59E-02 1.05E-02 5.18E-03 1.10E-02 1.76E-02 1.77E-02 6.64E-03 9.70E-02 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 9,369 9,321 7,342 7,800 6,391 6,988 5,900 8,501 10,335 8,523 10,373 9,290 9,123 8,661 0 88,730 8,288 7,930 5,999 442.30 437.89 353.24 363.15 319.00 334.32 416.14 409.34 425.56 412.27 491.14 456.46 432.20 417.60 450.15 446.50 394.40 383.78 296.70 649.17 637.25 562.16 585.85 552.00 536.40 678.20 617.20 631.10 617.05 748.40 660.50 630.00 630.30 652.00 679.00 620.20 591.79 471.00 0.0E+00 0.0E+00 2.9E-05 3.7E-05 0.0E+00 2.3E-05 2.7E-05 2.5E-06 0.0E+00 0.0E+00 3.4E-05 0.0E+00 0.0E+00 0.0E+00 0.0E+00 0.0E+00 6.1E-06 0.0E+00 0.0E+00 6.0E-02 6.0E-02 3.0E-03 8.0E-02 7.0E-01 9.8E-02 7.0E-02 1.0E+00 4.0E-01 1.0E-01 3.0E-03 2.0E-01 1.0E+00 1.0E-01 0.0E+00 4.0E-01 3.5E-02 5.0E+00 7.0E-01 120.20 120.20 78.11 163.83 76.13 119.38 208.28 106.17 120.19 106.17 128.18 134.22 120.19 106.17 134.20 134.22 165.83 92.14 137.36 1,2,4-Trimethylbenzene 1,3,5-Trimethylbenzene Benzene Bromodichloromethane Carbon disulfide Chloroform Dibromochloromethane Ethylbenzene Cumene (Isopropylbenzene) m-Xylene Naphthalene n-Butylbenzene n-Propylbenzene o-Xylene p-Isopropyltoluene sec-Butylbenzene Tetrachloroethylene Toluene Trichlorofluoromethane END Last Update: December 2014 DTSC Human and Ecological Risk Office DTSC Vapor Intrusion Screening Model Soil Gas CHEMPROPS Page 2 of 4 Attachment A - 25 Feet Below Ground Surface INTERMEDIATE CALCULATIONS SHEET Scenario: Sourcebuilding separation, LT Vadose zone Vadose zone soil effective air-filled total fluid porosity, saturation, a 3 V Vadose zone soil intrinsic permeability, Vadose zone soil relative air permeability, Vadose zone soil effective vapor permeability, Floorwall seam perimeter, Soil gas Residential Bldg. ventilation rate, Ste ki krg kv Xcrack conc. Qbuilding (cm) 3 (cm /cm ) (cm3/cm 3) (cm2) (cm2) (cm2) (cm) (g/m 3) 3 (cm /s) 747 747 747 747 747 747 747 747 747 747 747 747 747 747 747 747 747 747 747 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 3.39E+04 3.39E+04 3.39E+04 3.39E+04 3.39E+04 3.39E+04 3.39E+04 3.39E+04 3.39E+04 3.39E+04 3.39E+04 3.39E+04 3.39E+04 3.39E+04 3.39E+04 3.39E+04 3.39E+04 3.39E+04 3.39E+04 Area of enclosed space below grade, Crackto-total area ratio, Crack depth below grade, Enthalpy of vaporization at ave. soil temperature, Henry's law constant at ave. soil temperature, Henry's law constant at ave. soil temperature, Vapor viscosity at ave. soil temperature, Vadose zone effective diffusion coefficient, Diffusion path length, Chemical: 1,2,4-Trimethylbenzene 1,3,5-Trimethylbenzene Benzene Bromodichloromethane Carbon disulfide Chloroform Dibromochloromethane Ethylbenzene Cumene (Isopropylbenzene) m-Xylene Naphthalene n-Butylbenzene n-Propylbenzene o-Xylene p-Isopropyltoluene sec-Butylbenzene Tetrachloroethylene Toluene Trichlorofluoromethane AB  Zcrack Hv,TS HTS H'TS TS Deff V Ld (cm2) (unitless) (cm) (cal/mol) (atm-m3/mol) (unitless) (g/cm-s) (cm2/s) (cm) Chemical: 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 11,516 11,495 7,977 8,526 6,572 7,407 6,696 9,994 12,447 10,090 12,768 11,671 11,186 10,245 0 106,642 9,410 9,001 5,993 5.77E-03 8.22E-03 5.30E-03 2.02E-03 1.39E-02 3.52E-03 7.54E-04 7.45E-03 1.07E-02 6.78E-03 4.09E-04 1.49E-02 9.85E-03 4.89E-03 1.10E-02 9.60E-03 1.68E-02 6.31E-03 9.38E-02 2.37E-01 3.37E-01 2.18E-01 8.28E-02 5.69E-01 1.44E-01 3.09E-02 3.05E-01 4.39E-01 2.78E-01 1.68E-02 6.10E-01 4.04E-01 2.00E-01 4.51E-01 3.94E-01 6.88E-01 2.59E-01 3.84E+00 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.32E-03 1.31E-03 1.95E-03 1.23E-03 2.32E-03 1.68E-03 8.10E-04 1.49E-03 1.31E-03 1.49E-03 1.34E-03 1.15E-03 1.31E-03 1.50E-03 1.15E-03 1.15E-03 1.10E-03 1.70E-03 1.42E-03 747 747 747 747 747 747 747 747 747 747 747 747 747 747 747 747 747 747 747 1,2,4-Trimethylbenzene 1,3,5-Trimethylbenzene Benzene Bromodichloromethane Carbon disulfide Chloroform Dibromochloromethane Ethylbenzene Cumene (Isopropylbenzene) m-Xylene Naphthalene n-Butylbenzene n-Propylbenzene o-Xylene p-Isopropyltoluene sec-Butylbenzene Tetrachloroethylene Toluene Trichlorofluoromethane Last Update: December 2014 DTSC Human and Ecological Risk Office DTSC Vapor Intrusion Screening Model Soil Gas INTERCALCS Page 3 of 4 Attachment A - 25 Feet Below Ground Surface INTERMEDIATE CALCULATIONS SHEET Lp Csource rcrack Qsoil Crack effective diffusion coefficient, Dcrack Acrack Exponent of equivalent foundation Peclet number, exp(Pef)  Cbuilding (cm) 3 (g/m ) (cm) 3 (cm /s) (cm2/s) (cm2) (unitless) (unitless) (g/m 3) 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 1.32E-03 1.31E-03 1.95E-03 1.23E-03 2.32E-03 1.68E-03 8.10E-04 1.49E-03 1.31E-03 1.49E-03 1.34E-03 1.15E-03 1.31E-03 1.50E-03 1.15E-03 1.15E-03 1.10E-03 1.70E-03 1.42E-03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.48E+54 1.46E+55 1.24E+37 7.24E+58 1.65E+31 1.40E+43 2.20E+89 3.33E+48 1.26E+55 3.89E+48 1.59E+54 9.31E+62 1.71E+55 1.53E+48 1.12E+63 8.62E+62 6.96E+65 4.94E+42 7.27E+50 5.11E-05 5.08E-05 7.47E-05 4.76E-05 8.83E-05 6.45E-05 3.16E-05 5.75E-05 5.08E-05 5.75E-05 5.16E-05 4.46E-05 5.07E-05 5.79E-05 4.45E-05 4.46E-05 4.27E-05 6.52E-05 5.50E-05 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Convection path length, Source vapor conc., Crack radius, Average vapor flow rate into bldg., Area of crack, Infinite source indoor attenuation coefficient, Infinite source bldg. conc., Chemical: 1,2,4-Trimethylbenzene 1,3,5-Trimethylbenzene Benzene Bromodichloromethane Carbon disulfide Chloroform Dibromochloromethane Ethylbenzene Cumene (Isopropylbenzene) m-Xylene Naphthalene n-Butylbenzene n-Propylbenzene o-Xylene p-Isopropyltoluene sec-Butylbenzene Tetrachloroethylene Toluene Trichlorofluoromethane END Last Update: December 2014 DTSC Human and Ecological Risk Office DTSC Vapor Intrusion Screening Model Soil Gas INTERCALCS Page 4 of 4 Attachment A - 30 Feet Below Ground Surface USEPA SG-SCREEN Version 2.0, 04/2003 Department of Toxic Substances Control Vapor Intrusion Screening Model - Soil Gas DTSC Modification December 2014 TRC Modification June 2017 Scenario: Residential DATA ENTRY SHEET Soil Gas Concentration Data Reset to Defaults ENTER Chemical CAS No. ENTER Soil gas conc., OR ENTER Soil gas conc., (numbers only, Cg Cg no dashes) (g/m3) (ppmv) Chemical Attenuation Factor (unitless) 1,2,4-Trimethylbenzene 1,3,5-Trimethylbenzene Benzene Bromodichloromethane Carbon disulfide Chloroform Dibromochloromethane Ethylbenzene Cumene (Isopropylbenzene) m-Xylene Naphthalene n-Butylbenzene n-Propylbenzene o-Xylene p-Isopropyltoluene sec-Butylbenzene Tetrachloroethylene Toluene Trichlorofluoromethane 95636 108678 71432 75274 75150 67663 124481 100414 98828 108383 91203 104518 103651 95476 99876 135988 127184 108883 75694 MORE  MORE  ENTER Depth below grade to bottom of enclosed space floor, LF ENTER ENTER ENTER ENTER Soil gas sampling depth below grade, Ls Average soil temperature, TS Vadose zone SCS soil type (used to estimate soil vapor User-defined vadose zone soil vapor permeability, kv (15 or 200 cm) (cm) (oC) permeability) 15 914.4 24 LS ENTER Vandose zone SCS soil type ENTER Vadose zone soil dry bulk density, ENTER Vadose zone soil total porosity, ENTER Vadose zone soil water-filled porosity, Lookup Receptor Parameters NEW=> (cm2) ENTER Average vapor flow rate into bldg. (Leave blank to calculate) bA nV wV Qsoil (g/cm3) (unitless) (cm3/cm3) (L/m) LS 1.62 0.39 0.21 5 ENTER Averaging time for carcinogens, ATC ENTER Averaging time for noncarcinogens, ATNC ENTER ENTER ENTER ENTER Exposure duration, ED Exposure frequency, EF Exposure Time ET Air Exchange Rate ACH (yrs) (yrs) (yrs) (days/yr) (hrs/day) (hour)-1 70 26 26 350 24 (NEW) 0.5 (NEW) Lookup Soil Parameters MORE  OR Residential 4.3E‐05 4.2E‐05 6.2E‐05 4.0E‐05 7.4E‐05 5.4E‐05 2.6E‐05 4.8E‐05 4.2E‐05 4.8E‐05 4.3E‐05 3.7E‐05 4.2E‐05 4.8E‐05 3.7E‐05 3.7E‐05 3.6E‐05 5.4E‐05 4.6E‐05 END Last Update: December 2014 DTSC Human and Ecological Risk Office DTSC Vapor Intrusion Screening Model Soil Gas DATENTER Page 1 of 4 Attachment A - 30 Feet Below Ground Surface CHEMICAL PROPERTIES SHEET Scenario: Residential Diffusivity in air, Da Diffusivity in water, Dw Henry's law constant at reference temperature, H Henry's law constant reference temperature, TR Enthalpy of vaporization at the normal boiling point, Hv,b Normal boiling point, TB Critical temperature, TC Unit risk factor, URF Reference conc., RfC Molecular weight, MW (cm2/s) (cm2/s) (atm-m3/mol) (oC) (cal/mol) (oK) (oK) (g/m3)-1 (mg/m3) (g/mol) Chemical: 6.07E-02 6.02E-02 8.95E-02 5.63E-02 1.06E-01 7.69E-02 3.66E-02 6.85E-02 6.03E-02 6.84E-02 6.05E-02 5.28E-02 6.02E-02 6.89E-02 5.27E-02 5.28E-02 5.05E-02 7.78E-02 6.54E-02 7.92E-06 7.84E-06 1.03E-05 1.07E-05 1.30E-05 1.09E-05 1.06E-05 8.46E-06 7.86E-06 8.44E-06 8.38E-06 7.33E-06 7.83E-06 8.53E-06 7.32E-06 7.34E-06 9.46E-06 9.20E-06 1.00E-05 6.16E-03 8.77E-03 5.55E-03 2.12E-03 1.44E-02 3.67E-03 7.83E-04 7.88E-03 1.15E-02 7.18E-03 4.40E-04 1.59E-02 1.05E-02 5.18E-03 1.10E-02 1.76E-02 1.77E-02 6.64E-03 9.70E-02 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 9,369 9,321 7,342 7,800 6,391 6,988 5,900 8,501 10,335 8,523 10,373 9,290 9,123 8,661 0 88,730 8,288 7,930 5,999 442.30 437.89 353.24 363.15 319.00 334.32 416.14 409.34 425.56 412.27 491.14 456.46 432.20 417.60 450.15 446.50 394.40 383.78 296.70 649.17 637.25 562.16 585.85 552.00 536.40 678.20 617.20 631.10 617.05 748.40 660.50 630.00 630.30 652.00 679.00 620.20 591.79 471.00 0.0E+00 0.0E+00 2.9E-05 3.7E-05 0.0E+00 2.3E-05 2.7E-05 2.5E-06 0.0E+00 0.0E+00 3.4E-05 0.0E+00 0.0E+00 0.0E+00 0.0E+00 0.0E+00 6.1E-06 0.0E+00 0.0E+00 6.0E-02 6.0E-02 3.0E-03 8.0E-02 7.0E-01 9.8E-02 7.0E-02 1.0E+00 4.0E-01 1.0E-01 3.0E-03 2.0E-01 1.0E+00 1.0E-01 0.0E+00 4.0E-01 3.5E-02 5.0E+00 7.0E-01 120.20 120.20 78.11 163.83 76.13 119.38 208.28 106.17 120.19 106.17 128.18 134.22 120.19 106.17 134.20 134.22 165.83 92.14 137.36 1,2,4-Trimethylbenzene 1,3,5-Trimethylbenzene Benzene Bromodichloromethane Carbon disulfide Chloroform Dibromochloromethane Ethylbenzene Cumene (Isopropylbenzene) m-Xylene Naphthalene n-Butylbenzene n-Propylbenzene o-Xylene p-Isopropyltoluene sec-Butylbenzene Tetrachloroethylene Toluene Trichlorofluoromethane END Last Update: December 2014 DTSC Human and Ecological Risk Office DTSC Vapor Intrusion Screening Model Soil Gas CHEMPROPS Page 2 of 4 Attachment A - 30 Feet Below Ground Surface INTERMEDIATE CALCULATIONS SHEET Scenario: Sourcebuilding separation, LT Vadose zone Vadose zone soil effective air-filled total fluid porosity, saturation, a 3 V Vadose zone soil intrinsic permeability, Vadose zone soil relative air permeability, Vadose zone soil effective vapor permeability, Floorwall seam perimeter, Soil gas Residential Bldg. ventilation rate, Ste ki krg kv Xcrack conc. Qbuilding (cm) 3 (cm /cm ) (cm3/cm 3) (cm2) (cm2) (cm2) (cm) (g/m 3) 3 (cm /s) 899.4 899.4 899.4 899.4 899.4 899.4 899.4 899.4 899.4 899.4 899.4 899.4 899.4 899.4 899.4 899.4 899.4 899.4 899.4 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 0.472 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 1.66E-08 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 0.618 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 1.03E-08 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 3.39E+04 3.39E+04 3.39E+04 3.39E+04 3.39E+04 3.39E+04 3.39E+04 3.39E+04 3.39E+04 3.39E+04 3.39E+04 3.39E+04 3.39E+04 3.39E+04 3.39E+04 3.39E+04 3.39E+04 3.39E+04 3.39E+04 Area of enclosed space below grade, Crackto-total area ratio, Crack depth below grade, Enthalpy of vaporization at ave. soil temperature, Henry's law constant at ave. soil temperature, Henry's law constant at ave. soil temperature, Vapor viscosity at ave. soil temperature, Vadose zone effective diffusion coefficient, Diffusion path length, AB  Zcrack Hv,TS HTS H'TS TS Deff V Ld (cm2) (unitless) (cm) (cal/mol) (atm-m3/mol) (unitless) (g/cm-s) (cm2/s) (cm) 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 1.00E+06 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 5.00E-03 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 11,516 11,495 7,977 8,526 6,572 7,407 6,696 9,994 12,447 10,090 12,768 11,671 11,186 10,245 0 106,642 9,410 9,001 5,993 5.77E-03 8.22E-03 5.30E-03 2.02E-03 1.39E-02 3.52E-03 7.54E-04 7.45E-03 1.07E-02 6.78E-03 4.09E-04 1.49E-02 9.85E-03 4.89E-03 1.10E-02 9.60E-03 1.68E-02 6.31E-03 9.38E-02 2.37E-01 3.37E-01 2.18E-01 8.28E-02 5.69E-01 1.44E-01 3.09E-02 3.05E-01 4.39E-01 2.78E-01 1.68E-02 6.10E-01 4.04E-01 2.00E-01 4.51E-01 3.94E-01 6.88E-01 2.59E-01 3.84E+00 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.80E-04 1.32E-03 1.31E-03 1.95E-03 1.23E-03 2.32E-03 1.68E-03 8.10E-04 1.49E-03 1.31E-03 1.49E-03 1.34E-03 1.15E-03 1.31E-03 1.50E-03 1.15E-03 1.15E-03 1.10E-03 1.70E-03 1.42E-03 899.4 899.4 899.4 899.4 899.4 899.4 899.4 899.4 899.4 899.4 899.4 899.4 899.4 899.4 899.4 899.4 899.4 899.4 899.4 Last Update: December 2014 DTSC Human and Ecological Risk Office DTSC Vapor Intrusion Screening Model Soil Gas Chemical: 1,2,4-Trimethylbenzene 1,3,5-Trimethylbenzene Benzene Bromodichloromethane Carbon disulfide Chloroform Dibromochloromethane Ethylbenzene Cumene (Isopropylbenzene) m-Xylene Naphthalene n-Butylbenzene n-Propylbenzene o-Xylene p-Isopropyltoluene sec-Butylbenzene Tetrachloroethylene Toluene Trichlorofluoromethane Chemical: 1,2,4-Trimethylbenzene 1,3,5-Trimethylbenzene Benzene Bromodichloromethane Carbon disulfide Chloroform Dibromochloromethane Ethylbenzene Cumene (Isopropylbenzene) m-Xylene Naphthalene n-Butylbenzene n-Propylbenzene o-Xylene p-Isopropyltoluene sec-Butylbenzene Tetrachloroethylene Toluene Trichlorofluoromethane INTERCALCS Page 3 of 4 Attachment A - 30 Feet Below Ground Surface INTERMEDIATE CALCULATIONS SHEET Lp Csource rcrack Qsoil Crack effective diffusion coefficient, Dcrack Acrack Exponent of equivalent foundation Peclet number, exp(Pef)  Cbuilding (cm) 3 (g/m ) (cm) 3 (cm /s) (cm2/s) (cm2) (unitless) (unitless) (g/m 3) 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 8.33E+01 1.32E-03 1.31E-03 1.95E-03 1.23E-03 2.32E-03 1.68E-03 8.10E-04 1.49E-03 1.31E-03 1.49E-03 1.34E-03 1.15E-03 1.31E-03 1.50E-03 1.15E-03 1.15E-03 1.10E-03 1.70E-03 1.42E-03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.00E+03 5.48E+54 1.46E+55 1.24E+37 7.24E+58 1.65E+31 1.40E+43 2.20E+89 3.33E+48 1.26E+55 3.89E+48 1.59E+54 9.31E+62 1.71E+55 1.53E+48 1.12E+63 8.62E+62 6.96E+65 4.94E+42 7.27E+50 4.26E-05 4.23E-05 6.24E-05 3.97E-05 7.38E-05 5.38E-05 2.63E-05 4.80E-05 4.24E-05 4.79E-05 4.30E-05 3.71E-05 4.23E-05 4.83E-05 3.71E-05 3.72E-05 3.55E-05 5.44E-05 4.58E-05 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Convection path length, Source vapor conc., Crack radius, Average vapor flow rate into bldg., Area of crack, Infinite source indoor attenuation coefficient, Infinite source bldg. conc., Chemical: 1,2,4-Trimethylbenzene 1,3,5-Trimethylbenzene Benzene Bromodichloromethane Carbon disulfide Chloroform Dibromochloromethane Ethylbenzene Cumene (Isopropylbenzene) m-Xylene Naphthalene n-Butylbenzene n-Propylbenzene o-Xylene p-Isopropyltoluene sec-Butylbenzene Tetrachloroethylene Toluene Trichlorofluoromethane END Last Update: December 2014 DTSC Human and Ecological Risk Office DTSC Vapor Intrusion Screening Model Soil Gas INTERCALCS Page 4 of 4