The Chemours Company 1007 Market Street PO Box 2047 Wilmington, DE 19899 302-773-1000 t chemours.com December 11, 2017 Ms. Helen Dudar, Case Manager New Jersey Department of Environmental Protection 401 East State Street Trenton, NJ 08625 0028 609-633-9279 Re: Chemours’ Remediation and OM Cost Estimate August 2017 Chemours Chambers Works, Route 130 Deepwater, Salem County, New Jersey NJDEP SRP PI# 008221 Dear Ms. Dudar: The Chemours Company (Chemours) has reviewed the November 9, 2017 comment letter from the New Jersey Department of Environmental Protection (NJDEP) Bureau of Case Management (BCM) on the Chemours Chambers Works August 2017 Remediation and OM Cost Estimate. In addition, several of your comments were clarified in a phone conversation between yourself, Maurice Migliarino (NJDEP-BCM), and Scott Norcross (AECOM) on November 21, 2017. Please note that Chemours has revised the attached cost estimate to include an additional line item, revised other items, and has revised the total estimate. Chemours has prepared these materials in recognition of the need for timely resolution of these issues. Please advise us of your availability this week or early next week for a face-to-face meeting in your offices to bring this to final conclusion. The NJDEP comments are shown below followed by the Chemours response. NJDEP Comment 1 The remediation cost estimate shall comply with N.J.A.C. 7:26E-5 including submission on the Remediation Cost Review And RFS/FA Form certified by the person responsible for conducting the remediation and the LSRP http://www.nj.gov/dep/srp/srra/forms/rem_funding_source_form.pdf?version_2_0, and RFS guidance http://www.state.nj.us/dep/srp/rfs/ including the “Checklist for the Development of Detailed Remediation Cost Estimates for Remediation Funding Sources”. Chemours Response 1 The remediation cost estimate submitted August 25, 2017 was developed in compliance with the referenced guidance and included submission of the RFS/FA form signed by the responsible party and the LSRP. The items on the suggested checklist were considered during development of cost estimates, in accordance with the NJDEP guidance, which states (page 1, http://www.nj.gov/dep/srp/rfs/rfs_cost_estimate_checklist.pdf): “This checklist is intended to be used as a tool in developing a detailed remediation cost estimate for the purposes of establishing and maintaining a remediation funding source. It is not required to be submitted to the Department.” We have revised the cost estimate attachments to provide additional detail on the scope of work and cost estimates demonstrating our compliant approach to each remedial cost item. The revised remedial estimates attached to this letter also include a draft RFS/FA form to be signed by the responsible party and the LSRP. Ms. Helen Dudar, Case Manager New Jersey Department of Environmental Protection Chemours’ Remediation and OM Cost Estimate August 2017 December 11, 2017 Page 2 of 5 NJDEP Comment 2 The cost estimate is not sufficiently detailed to document that all remediation costs are included. To ensure that all AOC and SWMU are included within the cost estimate, Chemours is to submit a comprehensive PA/SI CID that identifies each AOC and SWMU and provides the remediation status, as well as, the agency approval status Chemours Response 2 A CID for all site-wide AOCs was included as Appendix B of the July 2017 PA/SI. A more comprehensive listing of regulatory status for all SWMUs was submitted on April 27, 2016 in response to USEPA and NJDEP comments during review of the 2014 Comprehensive RFI Report. Copies of these documents were included on the four CDs in Appendix A of the July 2017 PA/SI and are currently being reviewed by NJDEP as discussed on November 21, 2017. As requested, additional details have been added to the attachments of the revised cost estimate to demonstrate general compliance with NJDEP guidance and document that all identified remedial costs are included. NJDEP Comment 3 For all activities with an indeterminant remediation timeframe a minimum of 30 year RFS is appropriate until such time that an accurate remediation timeframe is approved. Chemours Response 3 Chemours agrees that a 30 year timeframe is appropriate for the RFS for activities with an indeterminate timeframe. NJDEP Comment 4 Based on the known site conditions, BCM determined the following activities are currently omitted and are to be included in the estimate: • per-and polyfluoroalkyls (on and off-site) - delineation and remediation Chemours Response: On site monitoring of PFAS compounds are included in Item 14 of the cost estimate (O&M of Groundwater Monitoring System) which includes the programs of the NJPDES-DGW permit. Off-site delineation and remediation of PFAS compounds have been added to the cost estimate as Item 20 and described in Attachment 20. • impacted potable wells – treatment unit operation and management, connection to public water supply if available Chemours Response: Chemours has added Item 20 to the cost estimate to cover the off-site residential well sampling and treatment O&M program for PFAS compounds. The assumptions for this estimate are provided in Attachment 20. • NAPL (on land and within the river) - delineation and remediation of all NAPL areas Chemours Response: Delineation of NAPL in the river at AOC 1 is ongoing and already included in the cost estimate as Item 1 and pilot test costs to develop a treatment approach for AOC 1 NAPL are included in Item 7. RFS/FA for NAPL areas located outside the State of New Jersey in the Delaware River is not included. Delineation of NAPL on-site was described in the 2014 RFI Report which is pending EPA review. Remediation of all NAPL areas onsite is technically impracticable, however Item 15 includes Ms. Helen Dudar, Case Manager New Jersey Department of Environmental Protection Chemours’ Remediation and OM Cost Estimate August 2017 December 11, 2017 Page 3 of 5 costs to develop Corrective Measures Studies to remediate source areas and prevent impacts to potential receptors. • compounds exceeding a remedial standard in soil, ground water, surface water and air - source determination, delineation, and remediation Chemours Response: The remedial estimate includes costs to maintain institutional and engineering controls to prevent direct exposure, maintain groundwater containment, and reduce contaminate source zones. These issues will continue to be addressed as part of the RCRA corrective action program and are pending EPA review of the 2014 RFI report. • Aquifer E – investigation Chemours Response: The cost for ongoing monitoring of E Aquifer is included in Item 14 of the cost estimate (O&M of Groundwater Monitoring System) which includes the programs of the NJPDES-DGW permit. Attachment 14 has been updated to document the inclusion of E Aquifer monitoring. • Salem Canal - ecological concerns Chemours Response: The Screening Level Ecological Risk Assessment (SLERA) report submitted on April 12, 2017 indicated limited, localized potential adverse effects to the benthic invertebrate community and negligible potential adverse effects to fish in Salem Canal. Chemours is currently reviewing the recently received comments on the SLERA. The costs for future monitoring in the Salem Canal is covered in Attachment 9. • bulkhead installation – completion and monitoring Chemours Response: The AOC1 SPB was completed in early December; therefore the $6,873,000 shown on the August 2017 RFS estimate as Item 3 has been reduced to $29,000 to only include a tidal study to demonstrate hydraulic effectiveness of the SPB. Ongoing monitoring of the SPB is already covered in the groundwater monitoring programs of Attachment 14. • metal contamination – source determination and remediation Chemours Response: The remedial estimate includes costs to maintain institutional and engineering controls to prevent direct exposure, maintain groundwater containment, and reduce contaminate source zones. These issues will continue to be addressed as part of the RCRA corrective action program and are pending EPA review of the 2014 RFI report. • Cost of Remedial Action Permits/biennial certifications Chemours Response: These costs are included in Item 14. Additional details have been added to Attachment 14 of the revised estimate to document their inclusion. Ms. Helen Dudar, Case Manager New Jersey Department of Environmental Protection Chemours’ Remediation and OM Cost Estimate August 2017 December 11, 2017 Page 4 of 5 • T-29 PCB Area – remediation Chemours Response: The costs for future groundwater quality monitoring at the T-29 area are included in Item 14 of the cost estimate (O&M of Groundwater Monitoring System). Additional details have been added to Attachment 14 of the revised estimate to document their inclusion. • ditch system - investigation and remediation of the whole system Chemours Response: The estimate for Item 4 (Remediation of Selected Ditches), described in Attachment 4, addresses previously un-remediated sections of ditches. It does not include remediation of ditch sections that were completed in accordance with EPA approved remedial action work plans. • landfills - management, including implementation costs for field investigations/pilot studies Chemours Response: Closure and post closure costs for RCRA secure Landfill C are included in Item 18, and closure and post closure costs for Sanitary Landfills A and B are included in Item 19. • protective cover of select areas – until approved, expand cost to reflect capping as per the DEP cap guidance Chemours Response: Chemours has developed its cap design to prevent impacts to receptors, considering all the factors recommended for consideration by NJDEP (Technical Factors, Regulatory Factors, and Responsible Party Factors) in accordance with the NJDEP guidance document at http://www.nj.gov/dep/srp/guidance/srra/capping_remediation_sites.pdf. As described in the guidance document, among the regulatory factors, the cap design considers the current and future land use. The current estimate assumes 6” gravel on geotextile which is appropriate and protective based on current site conditions and the conceptual site model. The final design and construction of this cap is subject to EPA approval and, while not yet approved as the final remedy with a Remedial Action Report, Remedial Action Permit, and Response Action Outcome, at this time, it is considered the most likely strategy and design for the remedial action for the selected areas. The cost estimate for this activity provided for the Remediation Funding Source, prior to its final selection and USEPA and NJDEP approval, is based on the anticipated likely remedy, in accordance with NJDEP guidance for Remediation Funding Source cost estimates prior to remedy approval at http://www.nj.gov/dep/srp/rfs/remediation_cost_estimates_faqs.pdf. The cost estimate of $40,000 per acre for this cap is based on this anticipated likely remedy and related operation and maintenance, as per the NJDEP cap guidance. • vapor investigations – include all ongoing investigations Chemours Response: The vapor intrusion investigations have been completed as described in the 2/16/2017 Vapor Intrusion Technical Memorandum Phase 3. The remediation cost estimate only includes O&M of the mitigation systems for 4 buildings. No additional investigations are planned. Ms. Helen Dudar, Case Manager New Jersey Department of Environmental Protection Chemours’ Remediation and OM Cost Estimate August 2017 December 11, 2017 Page 5 of 5 • FUSRAP areas – contamination not included within the US Army Corp of Engineers remedial activities Chemours Response: It is assumed that non-FUSRAP related contamination within FUSRAP Areas remediated by the US Army Corps of Engineers will be addressed by Chemours similar to other source areas on-site. Groundwater containment of these areas is included in the remedial estimate as Item 12 (O&M of IWS Pump and Treat System), and NAPL recovery (if present) is included in Item 11 (O&M of DNAPL Recovery Systems). • Ground water pump and treat and ground water monitoring – costs of these activities are to be based on actual conditions not on projected future improvements. Chemours Response: Future costs for the groundwater pump and treat and monitoring programs are based on current costs and the assumption of future optimization. These systems have been optimized in the past, and it is reasonable to assume they will be evaluated in the future. If you have any further questions or concerns, please feel free to contact me at 302.773.1289 or Andrew.S.Hartten@chemours.com. Respectfully, Andrew H. Hartten Chemours Project Director Chambers Works, NJ New Jersey Department of Environmental Protection Site Remediation and Waste Management Program REMEDIATION COST REVIEW AND RFS/FA FORM RFS FA Date Stamp (For Department use only) SECTION A. SITE NAME AND LOCATION Site Name: Chambers Works List All AKAs: Street Address: Municipality: County: 67 Canal Road and Route 130 Pennsville and Carney Point (Township Borough or City) Zip Code: 08069 Salem Program Interest (PI) or RFS Number(s): 008221 Case Tracking Number(s): SECTION B. PERSON RESPONSIBLE FOR CONDUCTING THE REMEDIATION The Chemours Company FC, LLC Full Legal Name Person Responsible for Conducting Remediation: _______________________________________________ Andrew Hartten Representative First Name: _______________________________ Representative Last Name: _________________________ Project Director Title: ______________________________________________________________________________________________________ 1007 Market Street Mailing Address: ___________________________________________________________________________________________ Wilmington Delaware 19899 Municipality: ______________________________________________ State: _______________ Zip Code: ________________ (302) 773-1289 Phone Number: __________________________________ Ext: ________________________ Fax: _____________________ Andrew.S.Hartten@chemours.com Email Address: _____________________________________________________________________________________________ I am also the person responsible for establishing and maintaining a Remediation Funding Source (RFS). Billing Contact Same as Person Responsible for Conducting Remediation / Representative listed above. Name of Organization: ______________________________________________________________________________________ Name of Billing Contact: ___________________________________________ Title: ___________________________________ Mailing Address: ___________________________________________________________________________________________ Municipality: ______________________________________________ State: _______________ Zip Code: ________________ Phone Number: __________________________________ Ext: ________________________ Fax: _____________________ Email Address: _____________________________________________________________________________________________ EXEMPTION CLAIM FOR RFS ONLY (not FA) If claiming an exemption from the requirement to post Remediation Funding Source pursuant to N.J.A.C. 7:26C-5.2(b), please check the appropriate box below and do not complete sections C through H: Environmental Opportunity Zone Innovative remedial action technology Unrestricted or limited restricted use remedial action Government entity Remediation at primary or secondary residence Owner or operator of a licensed child care center Public, private or charter school Remediation Cost Review and RFS/FA Form Version 2.0 02/14/17 NOTE: All exemptions require additional supporting documentation to be attached. Please refer to the form instructions. If the exemption is only for a portion of the site, you must complete section C through H for the portion of the site that does not meet the exemption criteria. See instructions. Page 1 of 7 SECTION C. PURPOSE OF SUBMISSION Check all that apply Initial Remediation Funding Source pursuant to N.J.A.C. 7:26C-5.2(a) (attach original RFS instrument and 1% surcharge payment, as applicable) Initial Financial Assurance for a Remedial Action Permit pursuant to N.J.A.C. 7:26C-7 (attach original FA instrument) Initial Direct Oversight Remediation Trust Fund Agreement pursuant to N.J.A.C. 7:26C-14.2(b)5 (attach original RTF instrument and 1% surcharge payment) Initial Direct Oversight Remediation Cost Review pursuant to N.J.A.C. 7:26C-14.2(b)4 Annual Remediation Cost Review pursuant to N.J.A.C. 7:26C-5.10 (attach RFS instrument verification and valuation) Biennial Cost Review pursuant to N.J.A.C. 7:26C-7.10 (Remedial Action Permits) Change in Remediation Funding Source or Financial Assurance Amount pursuant to N.J.A.C. 7:26C-5.11 Change in Remediation Funding Source or Financial Assurance Mechanism pursuant to N.J.A. 7:26C-5.11(d) Remediation Funding Source Disbursement Notification pursuant to N.J.A.C. 7:26C-5.12(a) Remediation Funding Source Disbursement Request pursuant to N.J.A.C. 7:26C-5.12(b) – Direct Oversight only Remediation Funding Source/Financial Assurance Disbursement Request pursuant to N.J.A.C. 7:26C-5.13(d) – Department held RFS/FA Request Release of the Remediation Funding Source or Financial Assurance pursuant to N.J.A.C. 7:26C-5.11(e) Using a Remediation Funding Source as Financial Assurance SECTION D. TYPE AND AMOUNT OF REMEDIATION FUNDING SOURCE OR FINANCIAL ASSURANCE POSTED Initial or Existing Mechanism for RFS or FA Check all that apply Replacement Mechanism for RFS or FA Check all that apply Letter of Credit Remediation Trust Fund Self Guarantee Line of Credit Environmental Insurance Policy Direct Oversight Remediation Trust Fund Fully Funded Trust (Existing only pre-June 1993) Performance Bond (Existing only pre-June 1993) Surety Bond (Existing only pre-June1993) Letter of Credit Remediation Trust Fund Self Guarantee Line of Credit Environmental Insurance Policy Direct Oversight Remediation Trust Fund 1. Expiration Date of Remediation Funding Source or Financial Assurance Posted: ................... ______________________ 2. Amount of Remediation Funding Source or Financial Assurance posted prior to any $31,128,000.00 increase, reduction, or disbursement addressed in this submission: ........................................ _____________________ 3. Do you want to disburse, reduce, or increase the amount of the Remediation Funding Source?............. If “Yes,” specify below: Disburse RFS Reduce RFS Remediation Cost Review and RFS/FA Form Version 2.0 02/14/17 Increase RFS Yes No by (amount): _________________________ Page 2 of 7 SECTION E. REMEDIATION COST ESTIMATION 1. Indicate the method(s) used to calculate the remediation cost review/estimate: (Check all that apply) RACER® (attach documentation for estimate) Cost-Pro® (attach documentation for estimate) Surrogate Cost (ISRA Remediation Certifications, see for instructions for further clarification) A Preliminary Assessment/Site Investigation has NOT been completed for the site, the surrogate remediation funding source has been established in the amount of $100,000 or $250,000. Calculated independently by LSRP/Consultant using (attach documentation used to generate calculation): Actual competitive bid(s) Internal company data Other commercially available software. Specify: _________________________________________________ Other. Specify: _____________________________________________________________________________ 2. Estimated cost: $54,311,769.00 To complete remediation: ______________________ or For Financial Assurance: ______________________ Scott Norcross 3. Full legal name of person who prepared the cost estimate: ___________________________________________________ SECTION F. COST REVIEW FOR REMEDIATION FUNDING SOURCE OR FINANCIAL ASSURANCE 1. Remediation Funding Source – due annually a. Date of most recent prior cost estimate: ...................................................................... ___________________________ b. Total monies spent to date to remediate the site: ....................................................... ___________________________ Attach detailed summary of monies spent to remediate. c. Estimated remaining costs to complete the remediation: ........................................... ___________________________ Attach detailed estimate of remaining costs to complete remediation. d. Provide an explanation of any changes from most recent prior cost estimate. 2. Financial Assurance – due biennially a. Date of most recent prior cost estimate: ..................................................................... ___________________________ b. Current cost estimate to operate, maintain and monitor the engineering control: ....... ___________________________ c. Provide an explanation of any changes from most recent prior cost estimate. Remediation Cost Review and RFS/FA Form Version 2.0 02/14/17 Page 3 of 7 SECTION G. LSRP AUTHORIZED DISBURSEMENTS NOTIFICATION AND REQUEST FOR NJDEP REDUCTION APPROVAL 1. Date previous notification/request submitted: .................................................................. ___________________________ 2. For Remediation Trust Funds and Lines of Credit: a. Date the LSRP authorized disbursement (Attach copy of authorization): ................... ___________________________ b. Total amount of the authorized disbursement: ............................................................ ___________________________ c. Date the holder of the RFS mechanism disbursed the funds: .................................... ___________________________ d. Amount of RFS remaining after disbursement ............................................................. ___________________________ 3. For NJDEP authorized reductions: a. Amount of funds you are requesting the NJDEP authorize for reduction: .................. ___________________________ b. Provide RFS account information (e.g., bank name, account number, etc.): SECTION H. REQUEST FOR NJDEP AUTHORIZED DISBURSEMENTS ONLY for sites subject to Direct Oversight pursuant to N.J.A.C. 7:26C-14 and disbursement requests in accordance with N.J.A.C. 7:26C-5.13 1. Total amount of requested disbursement ............................................................................... _________________________ 2. Provide the name, address, telephone number, email and tax identification number of all parties to receive payment from this disbursement and amount of each payment. 3. Attach a description of remediation costs incurred or to be incurred and the specific remediation that has or will be completed under this request including the following documentation: a.) For remediation costs that have been incurred, include a Remediation Report documenting the completion of the remediation activities; or b.) For remediation costs to be incurred, include a proposed scope of work of the remediation activities to be completed. 4. Attach an estimate of all remaining costs to complete the remediation. Remediation Cost Review and RFS/FA Form Version 2.0 02/14/17 Page 4 of 7 SECTION I. PERSON RESPONSIBLE FOR CONDUCTING THE REMEDIATION INFORMATION AND CERTIFICATION Full Legal Name of the Person Responsible for Conducting the Remediation: Representative First Name: Title: The Chemours Company FC, LLC Representative Last Name Shoemaker Stephen Remediation Team Manager Phone Number: Mailing Address: City/Town: (704) 654-5879 Fax: 1007 Market Street Wilmington Email Address: Ext: State: Delaware Zip Code: 19899 Stephen.H.Shoemaker@chemours.com The person responsible for conducting the remediation is the person responsible for establishing and maintaining a remediation funding source/financial assurance. This certification shall be signed by the person responsible for conducting the remediation who is submitting this notification in accordance with Administrative Requirements for the Remediation of Contaminated Sites rule at N.J.A.C. 7:26C-1.5(a). I certify under penalty of law that I have personally examined and am familiar with the information submitted herein, including all attached documents, and that based on my inquiry of those individuals immediately responsible for obtaining the information, to the best of my knowledge, I believe that the submitted information is true, accurate and complete. I am aware that there are significant civil penalties for knowingly submitting false, inaccurate or incomplete information and that I am committing a crime of the fourth degree if I make a written false statement which I do not believe to be true. I am also aware that if I knowingly direct or authorize the violation of any statute, I am personally liable for the penalties. I certify I am fully aware of the requirements of N.J.A.C. 7:26C-5 et seq. as they pertain to Remediation Funding Sources and Financial Assurances and the language of any provided Remediation Funding Source or Financial Assurance instrument does not deviate in any way from the language in the Department’s model documents found at www.nj.gov/dep/srp/guidance/rfsguide except as approved by the Department. For disbursement notification or request pursuant to N.J.A.C. 7:26C-5.12 or 5.13(d), I certify that the disbursement relates to actual remediation costs, incurred or to be incurred, and does not include ineligible legal fees. Signature: Date: Name/Title: 1) Remediation oversight of the Chambers Works site is under the auspices of USEPA as lead agency as a RCRA Corrective Action. 2) All financial assurances and funding sources are currently established under USEPA!s program and protocols, and NJDEP landfill closure requirements. 3) Despite being a USEPA-led RCRA Corrective Action site, Chemours is voluntarily submitting a remediation cost estimate illustrating costs associated with remedial work to be undertaken at the Chambers Works site. These future costs are based on net present value using a 7% discount rate. Remediation Cost Review and RFS/FA Form Version 2.0 02/14/17 Page 5 of 7 SECTION J. PERSON ESTABLISHING AND MAINTAINING A REMEDIATION FUNDING SOURCE/FINANCIAL ASSURANCE (complete if different person than Section I) Full Legal Name of Person Establishing and Maintaining a Remediation Funding Source: Representative First Name: Representative Last Name: Title: Phone Number: Ext: Fax: Mailing Address: City/Town: State: Zip Code: Email Address: This certification shall be signed by the person establishing and maintaining a remediation funding source/financial assurance who is submitting this notification in accordance with Administrative Requirements for the Remediation of Contaminated Sites rule at N.J.A.C. 7:26C-1.5(a). I certify under penalty of law that I have personally examined and am familiar with the information submitted herein, including all attached documents, and that based on my inquiry of those individuals immediately responsible for obtaining the information, to the best of my knowledge, I believe that the submitted information is true, accurate and complete. I am aware that there are significant civil penalties for knowingly submitting false, inaccurate or incomplete information and that I am committing a crime of the fourth degree if I make a written false statement which I do not believe to be true. I am also aware that if I knowingly direct or authorize the violation of any statute, I am personally liable for the penalties. I certify I am fully aware of the requirements of N.J.A.C. 7:26C-5 et seq. as they pertain to Remediation Funding Sources and Financial Assurances and the language of any provided Remediation Funding Source or Financial Assurance instrument does not deviate in any way from the language in the Department’s model documents found at www.nj.gov/dep/srp/guidance/rfsguide except as approved by the Department. For a disbursement notification or request pursuant to N.J.A.C. 7:26C-5.12, I certify that the disbursement relates to actual remediation costs, incurred or to be incurred, and does not include ineligible legal fees Signature: Date: Name/Title: Remediation Cost Review and RFS/FA Form Version 2.0 02/14/17 Page 6 of 7 SECTION K. LICENSED SITE REMEDIATION PROFESSIONAL INFORMATION AND STATEMENT LSRP ID Number: Matthew First Name: (610) 832-3500 Phone Number: Ext: Fax: 625 W. Ridge Pike, Suite E100 Mailing Address: City/Town: Last Name: Gordon Conshohocken State: PA Zip Code: 19428 matthew.gordon@aecom.com Email Address: This statement shall be signed by the LSRP who is submitting this notification in accordance with N.J.S.A. 58:10C-14, and N.J.S.A. 58:10B-1.3b(1) and (2). I certify that I am a Licensed Site Remediation Professional authorized pursuant to N.J.S.A. 58:10C to conduct business in New Jersey. As the Licensed Site Remediation Professional of record for this remediation, I: [SELECT ONE OR BOTH OF THE FOLLOWING AS APPLICABLE]: directly oversaw and supervised all of the referenced remediation, and\or personally reviewed and accepted all of the referenced remediation presented herein. I believe that the information contained herein, and including all attached documents, is true, accurate and complete. It is my independent professional judgment and opinion that the remediation conducted at this site, as reflected in this submission to the Department, conforms to, and is consistent with, the remediation requirements in N.J.S.A. 58:10C-14. My conduct and decisions in this matter were made upon the exercise of reasonable care and diligence, and by applying the knowledge and skill ordinarily exercised by licensed site remediation professionals practicing in good standing, in accordance with N.J.S.A. 58:10C-16, in the State of New Jersey at the time I performed these professional services. I am aware pursuant to N.J.S.A. 58:10C-17 that for purposely, knowingly or recklessly submitting false statement, representation or certification in any document or information submitted to the board or Department, etc., that there are significant civil, administrative and criminal penalties, including license revocation or suspension, fines and being punished by imprisonment for conviction of a crime of the third degree. For a disbursement notification or request pursuant to N.J.A.C. 7:26C-5.12(a) and (c), I certify that the disbursement relates to actual remediation costs, incurred or to be incurred, and does not include ineligible legal fees. LSRP Signature: Date: LSRP Name/Title: Matthew Gordon Company Name: AECOM Completed forms should be sent to: Bureau of Case Assignment & Initial Notice Site Remediation and Waste Management Program NJ Department of Environmental Protection 401-05H PO Box 420 Trenton, NJ 08625-0420 1) Remediation oversight of the Chambers Works site is under the auspices of USEPA as lead agency as a RCRA Corrective Action. 2) All financial assurances and funding sources are currently established under USEPA!s program and protocols, and NJDEP landfill closure requirements. 3) Despite being a USEPA-led RCRA Corrective Action site, Chemours is voluntarily submitting a remediation cost estimate illustrating costs associated with remedial work to be undertaken at the Chambers Works site. These future costs are based on net present value using a 7% discount rate. Remediation Cost Review and RFS/FA Form Version 2.0 02/14/17 Page 7 of 7 Item 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Description Investigation of NAPL in Delaware River Off Shore of AOC 1 Completion of RCRA Facility Investigation Completion of SPB in AOC 1 Remediation of Selected Ditches Remediation of SWMU 8 Protective Cover in Selected Areas On Site Remedial Design Vapor Intrusion Investigation O&M Salem Canal Sediment MNR O&M Inspection and Reporting of Seven (7) RCRA SWMUs O&M of DNAPL Recovery Systems O&M of IWS Groundwater Pump and Treat System Revised Eco Investigation of Delaware River O&M of Groundwater Monitoring System RCRA Corrective Measures Studies Post Closure Care of RCRA SWMUs 21, 25, 26, 28 Post Closure Care of RCRA SWMUs 15 and 16 (A & B Basins) RCRA Closure and Post Closure of Operating Units (Landfill C and Chem Waste Pad) Future Closure and Post Closure of Sanitary Landfills (A&B) Off-Site PFAS Potable Well Inves. And Treatment System O&M Total $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ Estimate (1) 80,000 122,000 117,000 1,882,000 3,638,000 636,000 463,000 95,000 350,000 221,000 1,102,000 9,150,000 200,000 3,573,000 537,000 257,000 333,000 9,381,769 13,212,000 8,962,000 54,311,769 Reference Attachment 1 Attachment 2 Attachment 3 Attachment 4 Attachment 5 Attachment 6 Attachment 7 Attachment 8 Attachment 9 Attachment 10 Attachment 11 Attachment 12 Attachment 13 Attachment 14 Attachment 15 Attachment 16 Attachment 17 Attachment 18 Attachment 19 Attachment 20 Note: Estimate for non-financially assured items includes the cost to complete remediation plus 30 years of operation, maintenance and monitoring. Total cost is net present value for 30 years (2018 through 2047) using a 7% discount rate. Attachment 1 Investigation of NAPL in Delaware River Off Shore of AOC 1 = $80,000. Notes: This project includes dense non-aqueous phase liquid (DNAPL) delineation in the Delaware River as described in the April 13 work plan submitted to EPA/DEP. The field investigation was completed in 2017. The project estimate assumes $80,000 to be spent in 2018 for data evaluation and reporting, and an assessment of RCRA Corrective Measures as detailed in Task 17002 (see attached July 7, 2017 memo fro S. Norcross to A. Hartten). Additional potential work in the river beyond 2018 is not included since this work is outside the state of New Jersey. AECOM Chambers Works Trailer L-1, Spot TR-610 Deepwater, NJ 08023 www.aecom.com \ 856 540 4762 856 540 2991 tel fax Memorandum To Andrew Hartten, Chemours Project Director Subject Delaware River NAPL Investigation Change Order 2 From Scott Norcross, Project Manager Date July 7, 2017 Chemours #:507642 AECOM #: 60485202 1.0 Scope of Work AECOM will conduct a subaqueous data gap investigation beneath the Delaware River adjacent to AOC 1 as described in the 2016 Delaware River NAPL Delineation Report dated April 13, 2017 which recommended additional investigation in a 300 foot by 250 foot data gap between the previously investigated northern and southern NAPL areas. A work plan (Phase III) detailing the proposed activity was attached as an appendix to the 2016 report. The objectives of this investigation are to: • Collect the data necessary for the delineation of the nature and extent, horizontally and vertically, of DNAPL in the B aquifer beneath the Delaware River just off-shore of AOC 1 in the data gap area between the previously characterized northern and southern areas. • Confirm the analytical results at station E16-BOR-04. During the 2016 sample program, laboratory results showed that one shallow sample (E16-BOR-04 (0.5-1.0)) had particularly high concentrations of site constituents. These results did not align with field observations or other sample results in the area. • Innovative Technology Evaluation. It is proposed to field test TarGOST® for the detection of NAPL in the subsurface. In early 2017, an aliquot of NAPL was collected from piezometer D15-P08B (AOC 1, area in front of building K-37) and provided to Dakota Technologies. Dakota determined that their TarGOST® technology could induce and record fluorescence from this NAPL. Similar tools previously tested at Chambers Works have been unsuccessful in detecting NAPL. If the field test of TarGOST® is successful, then a relatively quick and affordable method of mapping DNAPL architecture for the purpose of determining nature and extent or designing remediation systems would be available. This evaluation will determine if future overwater testing off shore of AOC 1 could be utilized during future work in the area. This change order request includes AECOM labor, AECOM subcontractors (OSI [boat], drilling subcontractor, and Dakota Technologies), ODCs, Chemours laboratory costs, costs to complete the field investigation as part of a new task: 17001 Field Investigation. AECOM estimated labor has also been added to the new Task 17002 to cover data evaluation and generation of a final deliverable. The labor effort required for the report may be refined once preliminary data is received from the laboratory. 2.0 Task 10001: Project Management The previous authorization covered Project Management (PM) tasks through January 2016. This change order requests funding of PM activities throughout the remainder of 2017. PM tasks include the management of safety, scope, schedule, budget, site strategy, and contract administration of subcontractors as follows: • Managing project safety by coordinating with the AECOM and Chemours safety resources to maintain/update the HASP, complete PSAs, document management of Page 2 change issues, report and close out UOs, and implement the field safety audit program to monitor compliance. This also includes mentoring junior staff to assist them in implementing the safety program; • Management of the subcontract processes including contract set up, maintenance, and invoicing; • Maintaining compliance with AECOM quality programs and the CRG Operations manual; Understanding the overall project strategy, goals, and objectives as communicated by the Chemours Project Director; • Identifying and engaging appropriate resources to meet the project goals which includes interaction with Chemours vendors (OSI, Dakota Technologies); • Developing and tracking the progress of project implementation plans, budget, and subcontractor schedules; • Assisting in the development of project forecasts for POCO and ITC; and • Communicating with regulators and other stakeholders as requested by the Project Director. This task includes routine coordination, preparing for and attending meetings, and limited development of presentation material or correspondence for NJDEP and USEPA. 2.1.1 Roles & Responsibilities Andrew Hartten: Chemours Project Director Scott Norcross: AECOM Project Manager Kathryn West: AECOM Deputy Project Manager John Dougherty: AECOM Site Safety Champion Linda Wallace: AECOM Project Accounting Coordinator Joey Dugosh: AECOM Subcontractor Sourcing Craig Bartlett: Chemours Technical Resource Maryann Nicholson: Chemours Technical Resource – Risk and Regulatory 3.0 Task 17001: Field Investigation AECOM will implement the field investigation activities as described in the sampling plan which includes the following activities: • Updating H&S Plan and completing required site excavation permits. Logistics with contractors to make sure they meet requirements for CWKs approved vendors (safety, orientation and drug screening). Setting up laboratory sampling program with ADQM (PIFs). • Utilizing a truck mounted direct push sampling device (Geoprobe® rig) to push the TarGOST® detector at 20 locations along the river facing side of Building K37 where NAPL is known to be present. If the land based TarGOST® evaluation is successful, a separate change order will be completed if the recommendations include future work utilizing a barge mounted direct push sampling device to push the TarGOST® detector offshore of AOC1 at locations where DNAPL is suspected to be present. • Collection of sediment and aquifer samples utilizing a barge mounted push sampling device to collect, log, and subsample at 9 boring locations to depths of up to 12 to 15 feet. • Collection of 1-foot interval sediment samples at two locations and shipping to the laboratory for analysis. • Shipping of samples to laboratories. Page 3 Estimated field investigation costs are shown below and assume that the field activities require up to five days on shore and seven days off shore to complete: AECOM Subcontractors OSI – Pontoon boat and supplies/2 man crew $45,458 Summit Drilling (Geoprobe®) $12,000 Dakota Technologies - $20,000 AECOM Labor = $42,811 AECOM ODCs (field equipment & disposables, travel) = $2,060 Total AECOM Labor/ODC = $122,329 Chemours Lab Costs Lancaster = $ 95,000 Chemours Waste Management (Chem Waste) =$2,500 Total Chemours Lab Cost = $ 97,500 TASK TOTAL = $97,500 3.1.1 Roles & Responsibilities Scott Norcross: AECOM Project Manager Kathryn West: AECOM Deputy Project Manager Scott Morgan: AECOM Hydrogeologic Technical Lead Kathy Sova: and John Dougherty - AECOM Site Safety Champion Linda Wallace: AECOM Project Accounting Coordinator Field team will consist of various technicians, geologist, or environmental scientists as needed: Katie Davis, Don Layman, Unitas Todd, Annie Dyroff, and Jenelle Gomes. 4.0 Task 17002: Data Evaluation and Reporting AECOM will complete the data evaluation tasks to satisfy the sampling objectives as described in the sampling plan which will include, but may not be limited to, the following: • Characterization of the horizontal and vertical distribution of constituents in shallow sediment and within the B aquifer beneath the Delaware River; • Determining the extent of residual NAPL within the B aquifer beneath the Delaware River in the data gap area; and • Evaluation of new technology to determine, in consultation with Dakota Technologies, if new laser fluoresces technology is effective in the Fluoroproducts/AOC 1 area. A summary report for the data gap investigation will be submitted 90 days following the receipt and validation of the analytical data. This report will include a description of the field activities, results of the sample analyses, boring logs, an updated conceptual model (cross sections) of NAPL in the B aquifer beneath the Delaware River, and data posting maps and summary tables in NJDEP format of other non-NAPL constituents. The NAPLANL program will also be run for constituents with high concentrations of analytes following protocols developed previously. NJDEP HazSite electronic data deliverable will be completed for submittal with report. A presentation will be completed at the conclusion of the evaluation of the new technology. 4.1 Project Team Roles and Responsibilities Andrew Hartten: Chemours Project Director Craig Bartlett: Chemours Technical Resource Maryann Nicholson: Chemours Technical Resource – Risk and Regulatory Scott Norcross: AECOM Project Manager and Technical Resource Scott Morgan: Technical Resource Page 4 Kathy West: AECOM Technical Support Matt Layton: AECOM GIS Support Dave Littel – AECOM CADD Support Maria Hunt – AECOM Technical Editing Support Jenelle Gomes, Annie Dyroff – AECOM field and office support Dana McCue or Nicole Wendel – AECOM Quality Assurance/Reviewers 5.0 Cost A detailed cost estimate is presented in Attachment A. 6.0 Assumptions This work will be conducted in accordance with the terms and conditions of the legacy URS (now AECOM)-Chemours Master Services Agreement (MA-00433-17), any applicable Chambers Works Site Special Conditions, Chambers Works Site Security requirements, and area-specific requirements of the Chambers Works operating areas. All field activities will be conducted in accordance with appropriate Chemours Health and Safety requirements which will include: Chambers Works work permits, development of project-specific Health & Safety Plans or procedures, daily safety tailgate meetings, and routine field safety audits. This authorization is requesting funds for AECOM work tasks only. The authorization and funding of external consultants is not part of this authorization request. 7.0 Project Summary Estimate Description Detail Code Previously Authorized if applicable New Authorization Am ount Dollars Requested Chemours Costs 862200 $ - $ 2,500 $ 2,500 Chemours Subcontractor Costs 772000 $ 107,550 $ 95,000 $ 202,550 AECOM Labor 721000 $ 133,186 $ 123,316 $ 256,502 AECOM Other Direct Costs 721001 $ 5,127 $ 2,060 $ 7,187 AECOM Subcontractor Costs 721001 $ 81,370 $ 79,907 $ 161,277 ADQM 721002 $ 32,265 $ - $ 32,265 $ 359,498 $ 302,783 $ 662,281 Total AECOM Attachment A Detailed Costs Labor $10,151.25 $42,811.12 $70,354.24 $2,060.00 AECOM Contractor Costs ODCs $0.00 $0.00 $2,060.00 $79,907.40 $0.00 $0.00 Chemours Contractor Costs $0.00 $95,000.00 $0.00 $2,500.00 Chemours Costs $0.00 $2,500.00 $0.00 $302,784.02 Total $10,151.25 $222,278.52 $70,354.24 Page 1 of 4 $95,000.00 Delaware River NAPL Investigation Change Order 2 Task Total Task 10001: Project Management Task 17001: Field Investigation Task 17002: Data Evaulation and Reporting $123,316.62 $79,907.40 Grand Total Filename: Chemours-PFT- 2017_DE RIVER NAPL CO2.xlsx Sheet: Summary Labor Employee Description Principal Scientist Project Scientist Clerk 4 Project Scientist Task 10001: Project Management Employee Name Norcross, Scott W West, Kathryn A (Kathy) Wallace, Linda M Chen, Philip J Group Total Task Total Labor Total $ $ $ $ Rate 105.20 76.75 51.90 96.78 $ 10,151.25 $ 10,151.25 July Dollars 841.62 614.02 415.20 4,355.08 6,225.91 August Hours Dollars 5 526.01 0.00 4 207.60 0.00 733.61 9 September Hours Dollars 5 526.01 0.00 4 207.60 0.00 733.61 9 October Hours Dollars 5 $ 526.01 $ 4 $ 207.60 $ 733.61 9 Delaware River NAPL Investigation Change Order 2 Hours 8 8 8 45 69 November Hours Dollars 5 $ 526.01 $ 4 $ 207.60 $ 733.61 9 December Hours Dollars 5 $ 526.01 2 $ 153.50 6 $ 311.40 $ 990.91 13 Total Hours 33 10 30 45 118 $ $ $ $ Total Loaded $ 3,471.66 767.52 1,557.00 4,355.08 10,151.25 Page 2 of 4 Labor Employee Description Scientist Technical 5 Graduate Scientist Graduate Scientist Principal Scientist Principal Scientist Project Scientist Professional 4 Principal Scientist Task 17001: Field Investigation Employee Name Davis, Kathryn E Dougherty, John F Dyroff, Anne P Gomes, Jenelle Morgan, Scott A Norcross, Scott W West, Kathryn A (Kathy) Dugosh, Joey W Sova, Kathryn A Group Total ODCs Chemours Contractor Costs AECOM Contractor Costs Expense Description Pine Environmental Misc field supplies (plastic, tape etc) Group Total Expense Description OSI Summit Drilling Dakota Technologies Group Total Expense Description Lancaster Laboratory Group Total Chemours Costs Expense Description Waste Disposal (D15 area is PCBs) Group Total Task Total Labor ODCs AECOM Contractor Costs Chemours Contractor Costs Chemours Costs Total $ $ $ $ $ $ $ $ $ August Hours Dollars 32 $ 1,749.36 $ $ $ $ $ $ 4,605.12 $ 629.69 $ 999.85 $ 7,984.02 60 8 8 108 3 227 $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ October Hours Dollars 20 1,093.35 3 259.04 80 2,922.48 80 2,999.23 40 4,233.17 12 1,262.42 60 4,605.12 17,374.81 295 November Hours Dollars $ $ 20 $ 730.62 20 $ 749.81 $ $ 8 $ 614.02 3 $ 236.13 $ $ 2,330.58 51 October November Quantity Dollars Quantity Dollars 1 $ 1,545.00 $ 2 $ 515.00 $ 3 $ 2,060.00 0 $ - Total Hours 117 6 132 132 80 24 168 11 11 681 $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ Total Quantity 1 $ 2 $ 3 $ December Hours Dollars 0 $ $ $ Total Quantity 1 1 1 3 December Quantity Dollars - December Quantity Dollars 0 $ $ $ $ Total Loaded $ 6,396.08 518.08 4,822.09 4,948.73 8,466.34 2,524.85 12,894.34 865.82 1,374.80 42,811.12 Total ODCs 1,545.00 515.00 2,060.00 Total Total Chemours Quantity Contractor 1 $ 95,000.00 1 $ 95,000.00 $ $ $ $ Total AECOM Contractor 46,947.40 12,360.00 20,600.00 79,907.40 0 November December Quantity Dollars Quantity Dollars 1 $ 95,000.00 $ 1 $ 95,000.00 0 $ - October Quantity Dollars $ $ December Total Total Quantity Dollars Quantity Chemours Costs 1 $ 2,500.00 1 $ 2,500.00 1 $ 2,500.00 1 $ 2,500.00 0 $ $ November Quantity Dollars 0 $ $ October Quantity Dollars 0 September October November Quantity Dollars Quantity Dollars Quantity Dollars $ 1 $ 46,947.40 $ $ 12,360.00 $ $ $ 20,600.00 $ $ $ 32,960.00 1 $ 46,947.40 0 $ - 0 $ $ September Quantity Dollars 0 September Quantity Dollars - 1 1 2 September Quantity Dollars 0 September Hours Dollars 65 3,553.38 3 259.04 32 1,168.99 32 1,199.69 40 4,233.17 12 1,262.42 40 3,070.08 374.95 15,121.72 Delaware River NAPL Investigation Change Order 2 Rate 54.67 86.35 36.53 37.49 105.83 105.20 76.75 78.71 124.98 August Raw Amount Quantity Dollars $ 1,500.00 $ $ 250.00 $ 0 $ - August Amount Quantity Dollars 2,500.00 $ 0 $ - August Amount Quantity Dollars 95,000.00 $ 0 $ - August Raw Amount Quantity Dollars $ 45,580.00 $ $ 12,000.00 $ $ 20,000.00 $ 0 $ - $ $ $ 42,811.12 $ 2,060.00 $ 79,907.40 $ 95,000.00 $ 2,500.00 $ 222,278.52 *Laboratory assumption - 9 borings maximum total 6 samples per boring = 54 samples at $1750/sample based on 2016 sampling PIFwhich includes CFCs. Assume NO PFC samples Page 3 of 4 Rate 54.67 36.53 37.49 105.83 105.20 51.90 76.75 96.78 82.85 56.84 64.28 83.21 89.90 $ 70,354.24 $ 70,354.24 $ $ $ $ $ $ $ $ $ $ $ $ $ July Hours Dollars $ $ $ $ 5 $ 526.01 8 $ 415.20 8 $ 614.02 45 $ 4,355.08 $ $ $ $ $ $ 5,910.30 66 November Hours Dollars $ 150 $ 5,479.65 200 $ 7,498.08 $ $ $ 60 $ 4,605.12 $ $ 60 $ 3,410.67 $ 2,249.79 35 $ $ $ 23,243.31 505 December Hours Dollars 40 $ 2,186.69 $ $ 125 $ 13,228.65 100 $ 10,520.19 20 $ 1,038.00 100 $ 7,675.20 8 $ 774.24 40 $ 3,313.93 $ $ $ 665.66 $ 1,798.08 $ 41,200.63 8 20 461 Delaware River NAPL Investigation Change Order 2 Labor Employee Description Scientist Graduate Scientist Graduate Scientist Principal Scientist Principal Scientist Clerk 4 Project Scientist Project Scientist Administrator 5 Technician 3 Technician 4 Project Scientist (SCI IV) Project Engineer Task 17002: Data Evaulation and Reporting Task Total Employee Name Davis, Kathryn E Dyroff, Anne P Gomes, Jenelle Morgan, Scott A Norcross, Scott W Wallace, Linda M West, Kathryn A (Kathy) Chen, Philip J Hunt, Maria P Layton, Matthew K (Matt) Littel, David E Wallace, Christine D Wendel, Nicole D Group Total Labor Total Filename: Chemours-PFT- 2017_DE RIVER NAPL CO2.xlsx Sheet: Task 17002 Total Hours 40 150 200 125 105 28 168 53 40 60 35 8 20 1,032 $ $ $ $ $ $ $ $ $ $ $ $ $ $ Total Loaded $ 2,186.69 5,479.65 7,498.08 13,228.65 11,046.20 1,453.20 12,894.34 5,129.31 3,313.93 3,410.67 2,249.79 665.66 1,798.08 70,354.24 Page 4 of 4 Attachment 2 Completion of RCRA Facility Investigation (RFI) = $122,000 Notes: This budgetary estimate includes AECOM labor to address DEP/EPA comments on the 2014 RCRA Facility Investigation (RFI) report and begin scope development of the sitewide RCRA corrective measures study. It also includes revisions to the Poly- and Perfluoroalkyl (PFAS) Conceptual Site Model (CSM) submitted on July 19, 2017 and term sheet support. It is estimated that up to $80,000 (equivalent to 800 hours of AECOM labor at $100/hour) will be spent in 2018, and $45,316 (450 hours) will be spent in 2019. These estimates are based on the hours spent from 2015 through 2017 on these tasks. Costs for 2019 are based on net present value using a 7% discount rate. Attachment 3 Completion of SPB in AOC 1 = $117,000 Notes: Install a steel sheet pile barrier (SPB) along AOC 1 to complete the hydraulic barrier along the site perimeter adjacent to the Delaware River. Installation of the SPB was completed in December 2017 and the construction costs have been expended. This estimate assumes $117,000 will be expended in 2018 to complete a tidal study to demonstrate SPB effectiveness and the associated data evaluation and reporting as described in the August 10, 2017 memo from T. Stammler to A. Hartten. \ Memorandum AECOM Chemours Chambers Works Trailer L-1, Spot TR-610 Deepwater, NJ 08023 www.aecom.com 856 540 4762 856 540 2991 tel fax Date: August 10, 2017 MSA #: LBIO-66959 To: Andrew Hartten, Chemours Project Director Work Order #: MA-00433-17 From: Terrill Stammler, AECOM CWKs PM Chemours Project No.: 507952 Subject: AOC 1,2,3 – SPB Hydrogeologic Study and Report AECOM Project No.: 60394020 1.0 Scope of Work AECOM is submitting this authorization to collect hydrogeologic information in AOC 1 and prepare a tidal study report for AOCs 1, 2, and 3 to support the Perimeter Groundwater Interim Stabilization Measure (ISM) Sheet Pile Barrier (SPB) project. Background: In 2009-2010, a perimeter investigation was completed as part of the Resource Conservation and Recovery Act (RCRA) Facilities Investigation program. The perimeter investigation identified and characterized three groundwater plumes in the manufacturing area as migrating to the Delaware River as a result of the incomplete capture by the IWS. These plumes are located in Area of Concern (AOC) 1, AOC 2, and AOC 3, which are adjacent to the Delaware River. Based on the findings of the perimeter investigation and a corrective measures study, construction of an impermeable SPB was recommended for the entire thickness of the “B” aquifer to prevent the off-site movement of groundwater at AOC 2 (TEL), AOC 3 (Jackson Labs), and for the entire thickness of the B, C, and D aquifers within AOC1. In 2014, URS developed a Tidal Study Work Plan for SPB Demonstration to document the procedures that would be used to demonstrate that the SPB has hydraulically isolated the B aquifer in AOCs 2 and 3 from the Delaware River. As part of this plan, groundwater levels were monitored, prior to the construction of the SPB, to determine how the individual wells responded to tidal changes in the Delaware River. A second water level monitoring event was conducted after the SPB was installed to provide data indicating the hydraulic effect that the SPB has caused. The elimination of tidal fluctuations in wells constructed inside the SPB would demonstrate the effectiveness of the SPB in mitigating the hydraulic connection between the B aquifer and the Delaware River. These two tidal monitoring events (i.e., pre- and postSPB) were performed at AOCs 2 and AOC 3 in 2015; however the findings were never provided in a report for submission to the regulatory agencies. Two tidal monitoring events (i.e., pre- and post- SPB) were performed at AOC 2 and AOC 3 in 2015. Hydrogeologic data is still required for AOC 1 to support the demonstration that the SPB is mitigating the hydraulic connection between the “B” Aquifer and the Delaware River. A similar monitoring program will be completed at AOC 1.This would indicate that the SPB has successfully stagnated groundwater flow, thereby preventing migration from the B Aquifer beneath the site from discharging to the Delaware River. The project will also demonstrate that the SPB is also preventing the inward flow of river water into the deeper C and D aquifers. Demonstrating this latter impact will also provide additional support for reducing pumping from the site’s interceptor well system (IWS). The objectives and method for the AOC 2 and AOC 3 program are provided in the Tidal Study Work Plan for SPB Demonstration. A stand-alone work plan has not been prepared for AOC 1; however, a similar evaluation and reporting approach will be used. Page 2 1.1 Tasks AECOM will open two new tasks, under AECOM PN 60394020 (Chemours Cost Center 507952, to track costs associated with the tidal study: Task 17090- Hydrogeologic Field Support Task 17090 will include pre-SPB measurement of groundwater levels at 9 locations shown in the Table 1 below, the construction of three new water level monitoring stations in the B aquifer within AOC 1, and post-SPB water level measurements at 12 locations. Table 1: AOC 1 SPB Tidal Study Monitoring Locations 2017 Pre-SPB Water Level Locations 2017 Post-SPB Water Level Locations C11-M03B and C11-M04B C11-M03B and C11-M04B C14-M01C C14-M01C and C14-M02C* D15-P05B and D15-P08B D15-P05B and D15-P08B E16-M01B E16-M01B and F16-M03B* E15-M01B E15-M01B F16-M01B F16-M01B and F16-M02B* DE River DE River * Denotes new well to be constructed Field support, required as part of the hydrogeologic study of AOC 1, will include the following: • AECOM personnel will complete the necessary tasks as required for field work, including but not limited to health and safety over-sight, CSR responsibilities, implementation of POADs, PSAs, work permits. • Use of transducers to record pre-SPB groundwater conditions. o Program transducers, measure well depth, check for NAPL prior to installing the transducers. o One week deployment of transducers to measure water levels at eight key monitoring wells constructed in the B and C aquifers along the western perimeter of Chambers Works prior to construction of the SPB in AOC 1. o Daily collection of water measurements using a water level interface probe from the target wells as a quality control measure of transducer operation. • Construction of 3 monitoring wells. Following completion of the SPB wall, the monitoring wells will be constructed by SGS drilling as a subcontractor to AECOM. These monitoring wells are required to address areas where groundwater elevation information is required for the hydrogeologic tidal study; • Use of transducers to record post- SPB groundwater conditions. o Program transducers, measure well depth, check for NAPL prior to installing the transducers. o One week deployment of transducers to measure water levels at 11 monitoring wells. o Daily collection of water measurements using a water level interface probe from the target wells as a quality control measure of transducer operation. • Conversion of all water level data to the project datum [NAVD 1988]. Page 3 Task 17091- Hydrogeologic Evaluation and Tidal Study Reporting AECOM will prepare a single report documenting the hydrogeological tidal study for AOCs 1, 2, and 3. The report will be titled Chambers Works Sheet Pile Barrier Tidal Study Report. For this report, AECOM will complete data analysis for AOCs 2 and 3 using the data collected in 2015, and AOC1 using the data collected as part of task 17090 above. The data analysis will include detailed hydrogeological analyses (e.g., determination of tidal lag times) and maps of pre- and post- SPB water levels as described in the 2014 Tidal Study Work Plan. The intent is to perform a detailed demonstration of the SPB performance. More specifically, Task 17091 will include the following: • Final downloading of electronic field data from monitoring well and DE River transducers; • Hydrogeological analyses including summary data tables and hydrographs; and • Preparation of the Chambers Works Sheet Pile Barrier Tidal Study Report. The Report will include findings from the previously conducted AOC2/3 evaluation, as well as the results from the AOC1 evaluation. Project Team Roles and Responsibilities Terrill Stammler Project Manager, Technical Resource, Construction Management. Reports directly to the Chemours CRG PD and is responsible for managing the project scope, schedule, budget, allocating resources, and leading safety program. Scott Norcross AECOM Project management support Scott Morgan AECOM Hydrogeological Site Lead/Expert Kathryn A West, PG AECOM Field Task Lead: George Gregory AECOM Hydrogeologist Kathryn Sova AECOM Health & Safety Resource John Dougherty AECOM Construction Superintendent / H&S Support / DSR Jenelle Gomes, Annie Dyroff, Don Layman, Derek Knowles, Unitas Todd and other technical or field personnel as necessary to accomplish task. 2.0 Costs AECOM Labor AECOM ODCs AECOM Contractor Costs Chemours Contractor Costs Chemours Costs Total Costs $ 75,672 $ 3,038 $ 36,050 $ 2,500 $ 0 $117,261 3.0 Schedule Water level monitoring of monitoring wells near AOC1 has commenced for pre SPB information. The tidal study evaluation will continue through 3rd and 4th quarters of 2017. Assuming SPB construction completion in November 2017, the Chambers Works Sheet Pile Barrier Tidal Study Report is anticipated to be complete by February 2017. 4.0 Assumptions Work will be completed by AECOM personnel with Chambers Works CRG Project Director’s direction and guidance. Page 4 This work will be conducted in accordance with the terms and conditions of the legacy URS (now AECOM Technical Services, Inc.) – Chemours Master Services Agreement (MA-00433-17) executed June 2017, and any applicable Chambers Works Site Special Conditions, Chambers Works Site Security requirements, and area-specific requirements of the Chambers Works operating areas. All field activities will be conducted in accordance with appropriate Chemours Health and Safety requirements which will include Chambers Works work permits, development of project-specific Health & Safety Plans or procedures, daily safety tailgate meetings, and routine field safety audits. 5.0 Project Summary Estimate Description Detail Code Chemours Costs Chemours Subcontractor Costs 862200 772000 ADQM AECOM Labor AECOM Other Direct Costs AECOM Subcontractor Costs 842000 721000 721001 721001 Total Previously Authorized (if applicable) $ 20,000 $ 10,674,095 $ $ $ $ 628,069 5,374 320,321 $ 11,647,859 Dollars Requested $ $ $ $ 2,500 75,672 3,039 36,050 $ 117,261 New Authorization Amount $ 20,000 $ 10,676,595 $ $ $ $ 703,741 8,413 356,371 $ 11,765,120 Attachment A Detailed Costs $75,671.92 Grand Total $3,038.50 ODCs $3,038.50 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $2,500.00 $36,050.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $36,050.00 $2,500.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 AECOM Contractor Costs Filename: Copy of 60394020-Hydro_SPB_7-2017_ Chemours-Project Forecasting Template- 2017 (2).mfp.xlsx Sheet: Summary Labor $30,956.01 $44,715.91 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 Task Total 17090 AOC 1 Hydrogeologic Field Stu 17091 - Hydrogeologic Evaluation and Task Number 3/Name Task Number 4/Name Task Number 5/Name Task Number 6/Name Task Number 7/Name Task Number 8/Name Task Number 9/Name Task Number 10/Name Task Number 11/Name Task Number 12/Name Task Number 13/Name Task Number 14/Name Task Number 15/Name Task Number 16/Name Task Number 17/Name Task Number 18/Name Task Number 19/Name Task Number 20/Name Task Number 21/Name Task Number 22/Name Task Number 23/Name Task Number 24/Name Task Number 25/Name Chemours Contractor Costs 60394020 - SPB Installation - AOC 1 Tidal Hydrogeologic Study $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 Chemours Costs Page 1 of 3 $117,260.42 Total $72,544.51 $44,715.91 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 AECOM Contractor Costs ODCs Chemours Costs -- Mat/Equip Mat/Equip Mat/Equip Type Multiplier 1.8 1.8 1.8 1.8 1.8 1.95 1.8 1.95 1.8 1.95 1.95 1.95 1.95 1.95 August Quantity Dollars 0.00 0.00 0 0.00 Sheet: Task 1 September Quantity Dollars 0.00 0.00 0 0.00 September Quantity Dollars 0.00 0.00 0.00 0.00 0.00 0.00 0 0.00 August Amount Quantity Dollars 1,500.00 0.00 1,000.00 0.00 0.00 0.00 0.00 0.00 0 0.00 Amount September Quantity Dollars 0.00 0.00 0.00 0.00 0.00 0 0.00 September Quantity Dollars 0.00 0.00 0.00 0.00 0 0.00 August Raw Amount Quantity Dollars 900.00 1 927.00 250.00 0.00 0.00 0.00 1 927.00 August Raw Amount Quantity Dollars 35,000.00 0.00 0.00 0.00 0.00 0.00 0 0.00 September Hours Dollars 0.00 0.00 0.00 0.00 2 210.40 4 429.41 0.00 0.00 0.00 0.00 0.00 0.00 0.00 8 1,027.68 0.00 0.00 0.00 14 1,667.49 August Hours Dollars 12 1,269.95 16 1,228.03 40 1,499.62 40 1,461.24 2 210.40 4 429.41 0.00 0.00 0.00 0.00 8 629.69 0.00 0.00 8 1,027.68 0.00 0.00 0.00 130 7,756.02 Rate 105.83 76.75 37.49 36.53 105.20 107.35 54.67 124.98 51.90 61.68 78.71 66.84 56.20 128.46 0.00 0.00 0.00 Task Total Labor 30,956.01 ODCs 3,038.50 AECOM Contractor Costs 36,050.00 Chemours Contractor Costs 2,500.00 Chemours Costs 0.00 Total Filename: Copy of 60394020-Hydro_SPB_7-2017_ Chemours-Project Forecasting 72,544.51 Template- 2017 (2).mfp.xlsx Group Total Expense Description Analytical Lab 1 Analytical Lab 2 Analytical Lab 3 Group Total Chemours Contractor Costs Expense Description Lancaster Lab - Waste Characterization sample Chem Waste- soil disposal Group Total Expense Description SGS Drilling (installing wells) Group Total Expense Description Pine Environmental - 8 Transducers 1 week Misc (paper towels, DI water, batteries) Labor Employee Description Principal Scientist Project Scientist Graduate Scientist Graduate Scientist Principal Scientist Principal Scientist Scientist Principal Scientist Clerk 4 Clerk 5 Professional 4 Project Field Technician 4 Project Field Technician 4 Manager 2 17090 AOC 1 Hydrogeologic Field Study Employee Name Morgan, Scott A West, Kathryn A (Kathy) Gomes, Jenelle Dyroff, Anne P Norcross, Scott W Gregory, George E Davis, Kathryn E Sova, Kathryn A Wallace, Linda M Baldwin, Betty A Dugosh, Joey W Mead, Simon J Phillips, Donald R (Donnie) Stammler, Terrill O Group Total 60394020 - SPB Installation - AOC 1 Tidal Hydrogeologic Study October Quantity Dollars 0.00 0.00 0 0.00 October Quantity Dollars 0.00 0.00 0.00 0.00 0.00 0.00 0 0.00 October Quantity Dollars 0.00 0.00 0.00 0.00 0.00 0 0.00 October Quantity Dollars 0.00 0.00 0.00 0.00 0 0.00 October Hours Dollars 0.00 0.00 0.00 0.00 2 210.40 4 429.41 0.00 0.00 0.00 0.00 0.00 0.00 0.00 8 1,027.68 0.00 0.00 0.00 14 1,667.49 November Quantity Dollars 0.00 0.00 0 0.00 November Quantity Dollars 0.00 0.00 0.00 0.00 0.00 0.00 0 0.00 November Quantity Dollars 0.00 0.00 0.00 0.00 0.00 0 0.00 November Quantity Dollars 2 1,854.00 1 257.50 0.00 0.00 3 2,111.50 Total Quantity 3 1 0 0 4 Total Hours 36 42 100 100 10 28 68 8 12 6 8 8 8 40 0 0 0 474 December Quantity Dollars 0.00 0.00 0 0.00 December Quantity Dollars 1 1,500.00 1 1,000.00 0.00 0.00 0.00 0.00 2 2,500.00 Total Quantity 0 0 0 Total Quantity 1 1 0 0 0 0 2 December Total Quantity Dollars Quantity 1 36,050.00 1 0.00 0 0.00 0 0.00 0 0.00 0 1 36,050.00 1 December Quantity Dollars 0.00 0.00 0.00 0.00 0 0.00 Assume SPB installed Oct 31 November December Hours Dollars Hours Dollars 8 846.63 16 1,693.27 16 1,228.03 10 767.52 60 2,249.42 0.00 60 2,191.86 0.00 2 210.40 2 210.40 4 429.41 12 1,288.23 8 437.34 60 3,280.04 0.00 8 999.85 0.00 12 622.80 0.00 6 370.09 0.00 0.00 0.00 8 534.71 0.00 8 449.64 8 1,027.68 8 1,027.68 0.00 0.00 0.00 0.00 0.00 0.00 166 8,620.78 150 11,244.23 Total Chemours Costs 0.00 0.00 0.00 Total Chemours Contractor 1,500.00 1,000.00 0.00 0.00 0.00 0.00 2,500.00 Total AECOM Contractor 36,050.00 0.00 0.00 0.00 0.00 36,050.00 Total ODCs 2,781.00 257.50 0.00 0.00 3,038.50 Total Loaded $ 3,809.85 3,223.58 3,749.04 3,653.10 1,052.02 3,005.88 3,717.38 999.85 622.80 370.09 629.69 534.71 449.64 5,138.39 0.00 0.00 0.00 30,956.01 Total Raw $ ###### 0.00 0.00 0.00 0.00 ###### Total Raw $ ###### 250.00 0.00 0.00 ###### Total Raw $ ###### ###### ###### ###### 584.46 ###### ###### 512.75 346.00 189.79 322.92 274.21 230.58 ###### 0.00 0.00 0.00 ###### Page 2 of 3 Filename: Copy of 60394020-Hydro_SPB_7-2017_ Chemours-Project Forecasting Template- 2017 (2).mfp.xlsx Sheet: Task 2 ODCs Chemours Costs Chemours Contractor Costs AECOM Contractor Costs Task Total Labor ODCs AECOM Contractor Costs Chemours Contractor Costs Chemours Costs Total Group Total Expense Description Analytical Lab 1 Analytical Lab 2 Analytical Lab 3 Group Total Expense Description Group Total Expense Description Group Total Expense Description Labor Employee Description Principal Scientist Principal Scientist Project Scientist Principal Scientist Project Engineer Administrator 5 Technician 3 Clerk 4 Manager 2 0 0 0 0 0 0 0 0 -- -- -- -- Type Multiplier 1.8 1.95 1.8 1.8 1.95 1.95 1.95 1.8 1.95 0 0 0 0 0 0 0 0 17091 - Hydrogeologic Evaluation and Tidal Study Reporting Employee Name Morgan, Scott A Gregory, George E West, Kathryn A (Kathy) Norcross, Scott W Wendel, Nicole D Hunt, Maria P Layton, Matthew K (Matt) Wallace, Linda M Stammler, Terrill O Group Total 2018 January Hours Dollars 0.00 0.00 0.00 0.00 0.00 32 2,651.14 0.00 24 1,245.60 8 1,027.68 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 64 4,924.42 44,715.91 0.00 0.00 0.00 0.00 44,715.91 Amount Amount January Quantity Dollars 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0 0.00 January Quantity Dollars 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0 0.00 January Raw Amount Quantity Dollars 0.00 0.00 0.00 0.00 0 0.00 January Raw Amount Quantity Dollars 0.00 0.00 0.00 0.00 0 0.00 Rate 105.83 107.35 76.75 105.20 89.90 82.85 56.84 51.90 128.46 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 September Quantity Dollars 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0 0.00 September Quantity Dollars 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0 0.00 September Quantity Dollars 0.00 0.00 0.00 0.00 0 0.00 September Quantity Dollars 0.00 0.00 0.00 0.00 0 0.00 2017 September Hours Dollars 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0 0.00 60394020 - SPB Installation - AOC 1 Tidal Hydrogeologic Study October Quantity Dollars 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0 0.00 October Quantity Dollars 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0 0.00 October Quantity Dollars 0.00 0.00 0.00 0.00 0 0.00 October Quantity Dollars 0.00 0.00 0.00 0.00 0 0.00 2017 October Hours Dollars 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0 0.00 November Quantity Dollars 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0 0.00 November Quantity Dollars 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0 0.00 November Quantity Dollars 0.00 0.00 0.00 0.00 0 0.00 November Quantity Dollars 0.00 0.00 0.00 0.00 0 0.00 2017 November Hours Dollars 24 2,539.90 100 10,735.29 35 2,686.32 8 841.62 0.00 0.00 30 1,705.33 0.00 8 1,027.68 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 205 19,536.13 December Quantity Dollars 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0 0.00 December Quantity Dollars 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0 0.00 December Quantity Dollars 0.00 0.00 0.00 0.00 0 0.00 December Quantity Dollars 0.00 0.00 0.00 0.00 0 0.00 2017 December Hours Dollars 24 2,539.90 100 10,735.29 35 2,686.32 8 841.62 8 719.23 0.00 30 1,705.33 0.00 8 1,027.68 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 213 20,255.36 Total AECOM Contractor 0.00 0.00 0.00 0.00 0.00 Total ODCs 0.00 0.00 0.00 0.00 0.00 Total Loaded $ 5,079.80 21,470.57 5,372.64 1,683.23 719.23 2,651.14 3,410.67 1,245.60 3,083.03 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 44,715.91 Total Quantity 0 0 0 0 0 0 0 0 0 0 0 Total Chemours Costs 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Total Total Quantity Chemours Contractor 0 0.00 0 0.00 0 0.00 0 0.00 0 0.00 0 0.00 0 0.00 0 0.00 0 0.00 0 0.00 0 0.00 Total Quantity 0 0 0 0 0 Total Quantity 0 0 0 0 0 Total Hours 48 200 70 16 8 32 60 24 24 0 0 0 0 0 0 0 0 0 482 Total Raw $ 0.00 0.00 0.00 0.00 0.00 Total Raw $ 0.00 0.00 0.00 0.00 0.00 Total Raw $ 2,822.11 11,010.55 2,984.80 935.13 368.84 1,359.56 1,749.06 692.00 1,581.04 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 23,503.09 Page 3 of 3 Attachment 4 Remediation of Selected Ditches = $1,882,000 Notes: This budget estimate assumes that portions of the SWMU56/56A ditch system at the site, which were not previously remediated, may require remediation in the future. The estimate assumes excavation of 1,225 linear feet of ditches at a cost of $250 per linear foot, insitu stabilization of 13,500 cubic yards of sediment at a cost of $107 per cubic yard, for a total of $1,750,750. In addition, project engineering support (15% of total) will cost $262,613, increasing the total project cost to $2,013,363. This work is expected to occur between 2021 and 2024; therefore, future costs are based on net present value using a 7% discount rate for a total of approximately $1,882,000. Attachment 5 Remediation of SWMU 8 = $3,638,000 Notes: This estimate assumes active aerobic bioremediation is implemented in landfill A with aerobic enhancement in B Aquifer beneath SWMU 8 at a cost of $4,025,000. This cost is based on estimates in the April 27, 2007 SWMU 8 Interim Corrective Measures Study and Remedial Action Selection Report, subsequent treatability studies, and professional judgement. This work is expected to occur between 2021 and 2024; therefore, future costs are based on a net present value using a 7% discount rate for a total of $3,638,000. Attachment 6 Protective Cover in Selected Areas On Site = $636,000 Notes: This estimate is to install a 6-inch gravel cover over a total area of 17 acres to address areas where soil concentrations exceed the nonresidential remedial standard. Existing shallow soil data were evaluated in ArcGIS using Thiessen Polygons to estimate areas exceeding this remedial standard. These areas were reduced based on existing asphalt, gravel, or concrete cover and it was determined that approximately 17 acres of the site may require future cover as shown on the attached figure. The approximate unit cost was estimated at $40,000 per acre which includes 4,840 square yards of geotextile and 810 cubic yards of gravel for a total cost of $680,000. This cover design is equivalent to current site conditions. The net present cost, assuming the work is completed in 2022, and using a 7% discount rate is $636,000. V:\Pr o je cts \D u p on t\C h a m b er s_ W or ks \_ GIS \P ro j e cts \60 5 1 7 1 8 1_ S u rfa ce _ C o v er \Th ie s se n _ Po l yg o n s_ C R G -S o il _ So i l-R e u s e .m x d 19.5 194 10 60 7.5 21 CRG and Combined (Soil Reuse) Area Exceeding shown Exceedence Factor (EF) EF > 1 EF > 10 EF >100 (acres) (acres) (acres) Sum Total Area Sum Total Area Legend 10 - 100 1 - 10 Thiessen Polygon EF > 100 Water Gravel Over Foundation Gravel Grass Concrete Asphalt Surface Cover Type Notes: No soil data is shown for the following: -SWMUs 5B, 12, 14, 15, 16, 32A, 39-1 through 39-9, 43, 50 (soil was stabilized or removed) -SWMUs 35, 36, 38, 51 (determined not to be a SWMU no soil data collected) -SWMUs 18, 23, 24, 27, and 29 (RCRA Part B Operating Unit) -SWMU 32B (soil data not available in electronic database) -SWMU 33 - ACOE led investigation (data not included) Map Ext ent 1 inch = 400 fe et Fe et 400 ® Cha m bers Work s 200 MA P F OR M ATT ED FO R "E " ( 34 " X 4 4 ") SIZ E S H EE T. TEX T S C AL E N OT VA L ID FO R D IF FE R EN T PA G E S IZE . 800 Map Projection: New Jersey State Plane Feet NAD83 Aerial Source: Esri, DigitalGlobe, GeoEye, Earthstar Geographics, CNES/Airbus DS, USDA, USGS, AEX, Getmapping, Aerogrid, IGN, IGP, swisstopo, and the GIS User Community. 0 AECOM Sabre Building, Suite 300 4051 Ogletown Road Newark, DE 19713 THIESSEN POLYGONS CRG SOIL AND SOIL REUSE M.LAYTON K.WEST 16001 60517181 6/28/2017 x FIGU R E N U M BE R : D ATE : PR O JE C T N U M BE R : PA/SI CHEMOURS CHAMBERS WORKS COMPLEX DEEPWATER, NEW JERSEY TA S K N U M B ER : D ES IGN E D BY : S.NORCROSS D ATA QU A L IT Y C H E C K B Y: D R AW N B Y: Attachment 7 Remedial Design = $463,000 Notes: This budgetary estimate is for conducting Insitu Chemical Reduction (ISCR) bench and pilot studies in to address NAPL at the site perimeter and beneath the Delaware River at AOC1 is $569,083. This budgetary estimate is based on the project estimate developed in 2014 as shown on the attachment (Pilot Test Cost Estimate 2014 - Large DNAPL Mass). Based on work that has already been completed $490,000 remains to be expended on this project. This work is expected to occur between 2018 and 2020. The future costs are based on this estimate and a net present value using a 7% discount rate. Site Training Task Item Labor Project Manager Field Geologist Site Supervisor Injection Supervisor Injection Specialist Mobilization Per diem Field Vehicle, Fuel, Tolls Project Management Administrative Assistant Pre-Design Sampling Event Oversight Field Crew Labor Geologist Mobilization Per diem Field Vehicle, Fuel, Tolls Project Management Project Director Project Manager Administrative Assistant Pre-Construction Deliverables Work Plan Project Director Project Manager Site Supervisor Safety Plan Project Director Project Manager Site Supervisor Waste Management & Other Plans Project Director Project Manager Site Supervisor Project Management Administrative Assistant 2 10 4 20 20 20 20 20 Quantity Hour Hour Day Day Hour Hour Hour Hour Hour Unit $ $ $ $ $ $ $ $ $ $ $ 140.00 $ 120.00 $ 45.00 $ 129.00 $ 75.00 $ 85.00 $ 45.00 $ 129.00 $ 75.00 $ 120.00 85.00 100.00 90.00 80.00 420.00 720.00 135.00 387.00 225.00 3,230.00 90.00 1,290.00 300.00 2,400.00 1,700.00 2,000.00 1,800.00 1,600.00 Extended Cost 38 Day Day $ $ $ 4 8 8 24 40 16 Hour Hour Hour Hour Hour Hour Hour Hour Hour $ $ $ $ $ $ $ $ $ $ 45.00 $ 140.00 $ 120.00 $ 100.00 $ 140.00 $ 120.00 $ 100.00 $ 140.00 $ 120.00 $ 100.00 $ 180.00 140.00 480.00 400.00 560.00 960.00 800.00 3,360.00 4,800.00 1,600.00 Unit Cost 3 3 Hour Hour Hour 1 4 4 Hour $ $ $ $ $ 3 6 3 4 5,117.00 11,180.00 Total $ 13,280.00 $ $ Task Injection Well Installation Oversight Item Field Labor Field Geologist Mobilization Per diem Field Vehicle, Fuel, Tolls Materials Injection Well Pipe & Screens Vent Well Pipe & Screens Project Management Project Director Project Manager Administrative Assistant Permanganate Injection & Reduction Period Equipment GCI Injection Rig Rain for Rent Water Truck Rental & fuel Reagents Sodium Permanganate, 40% Injection Crew Labor Site Supervisor Injection Supervisor Injection Specialist Mobilization Rig mobilization Per diem Field Vehicle, Fuel, Tolls Data Management Data Management Technician Virtual Server Laptop and Aircard Service Project Management Project Director Project Manager Administrative Assistant 1 14 6 44 44 44 1,328 4 1 1 7 7 7 140 70 7 7 88 Quantity Hour Day Day Lump Day Day Hour Hour Hour Pound Day Month Week Hour Hour Hour Foot Foot Day Day Hour Unit $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ 140.00 $ 120.00 $ 45.00 $ 65.00 $ 5.00 $ 18.00 $ 1,500.00 $ 129.00 $ 75.00 $ 100.00 $ 90.00 $ 80.00 $ 3.25 $ 1,450.00 $ 1,400.00 $ 2,200.00 $ 140.00 $ 120.00 $ 45.00 $ 6.00 $ 6.50 $ 129.00 $ 75.00 $ 85.00 $ 560.00 3,360.00 180.00 260.00 20.00 72.00 1,500.00 1,806.00 450.00 4,400.00 3,960.00 3,520.00 4,316.00 5,800.00 1,400.00 2,200.00 980.00 840.00 315.00 840.00 455.00 903.00 525.00 7,480.00 Extended Cost 4 4 4 Hour Hour Hour Unit Cost 4 28 4 $ $ 12,338.00 Total 33,804.00 Phosphate Injection Task Item Equipment GCI Injection Rig Rain for Rent Water Truck Rental & fuel Reagents (1/2 of total phosphate requirement) Potassium Phosphate Monobasic Potassium Phosphate Dibasic Injection Crew Labor Site Supervisor Injection Supervisor Injection Specialist Mobilization Rig mobilization Per diem Field Vehicle, Fuel, Tolls Data Management Data Management Technician Virtual Server Laptop and Aircard Service Project Management Project Director Project Manager Administrative Assistant Peroxide Injection Equipment GCI Injection Rig Rain for Rent Water Truck Rental & fuel Reagents (1/2 of total phosphate plus the peroxide) Potassium Phosphate Monobasic Potassium Phosphate Dibasic Peroxide, 34% delivered Injection Crew Labor Site Supervisor Injection Supervisor Injection Specialist Mobilization Rig mobilization Per diem Field Vehicle, Fuel, Tolls 425 2,200 4 1 1 Quantity Hour Hour Hour Pound Pound Day Month Week Unit $ $ $ $ $ $ $ $ $ $ $ 1,500.00 $ 129.00 $ 75.00 $ 100.00 $ 90.00 $ 80.00 $ 2.32 $ 2.48 $ 1,450.00 $ 1,400.00 $ 2,200.00 $ 260.00 20.00 72.00 1,677.00 375.00 4,400.00 3,960.00 3,520.00 986.00 5,456.00 5,800.00 1,400.00 2,200.00 Extended Cost 44 44 44 Lump Day Day 65.00 $ 5.00 $ 18.00 $ Unit Cost 0 13 5 $ $ $ 92,800.00 2,800.00 16,500.00 Hour Day Day 1,450.00 $ 1,400.00 $ 5,500.00 $ 986.00 5,456.00 56,400.00 4 4 4 $ $ $ 2.32 $ 2.48 $ 0.47 $ 69,200.00 62,280.00 55,360.00 1,120.00 2,400.00 180.00 Day Month Month $ $ $ 100.00 $ 90.00 $ 80.00 $ 26,058.00 5,550.00 140.00 $ 120.00 $ 45.00 $ 64 2 3 Pound Pound Pound $ $ $ 1,500.00 $ 129.00 $ 75.00 $ $ $ $ 425 2,200 120,000 Hour Hour Hour $ $ $ Hour Hour Hour 692 692 692 Lump Day Day 8 20 4 0 202 74 $ $ 33,826.00 Total 441,422.00 Task Item Data Management Data Management Technician Virtual Server Laptop and Aircard Service Project Management Project Director Project Manager Administrative Assistant Post-Injection Sampling Oversight Field Crew Labor Geologist Mobilization Per diem Field Vehicle, Fuel, Tolls Project Management Project Director Project Manager Administrative Assistant Post-Construction Deliverables Work Plan Project Director Project Manager Site Supervisor Project Management Administrative Assistant 4 4 44 64 220 64 128 64 64 Quantity Hour Hour Hour Day Day Hour Hour Hour Hour Hour Day Day Unit $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ 45.00 $ 140.00 $ 120.00 $ 100.00 $ 140.00 $ 120.00 $ 45.00 $ 129.00 $ 75.00 $ 85.00 $ 140.00 $ 120.00 $ 45.00 $ 65.00 $ 5.00 $ 18.00 $ 180.00 3,360.00 4,800.00 4,000.00 560.00 480.00 180.00 516.00 300.00 3,740.00 8,960.00 26,400.00 2,880.00 8,320.00 320.00 1,152.00 Extended Cost 4 4 4 Hour Hour Hour $ Unit Cost 24 40 40 Hour 5,776.00 Total $ 12,340.00 569,083.00 $ Total = $ 4 Attachment 8 Vapor Intrusion Investigation O&M = $95,000 Notes: This estimate covers the continued operation of vapor mitigation systems through 2025 based on the findings of the investigation that was completed in early 2017. The estimated costs for 2018 through 2020 are $21,000 per year as described in the attached December 8, 2017 memo from T. McGee and D. Whelihan to A. Hartten. Assuming demolition of buildings proceeds pursuant with site redevelopment plans, this estimate will reduce to $10,000 per year from 2021 through 2025. The final cost estimate is based on these assumptions and a net present value using a 7% discount rate. AECOM www.aecom.com 856 540 2402 tel Memorandum To Andrew Hartten, Chemours Project Director From Tom McGee, Deputy Project Manager Dave Whelihan, Project Manager Subject CWK Vapor Intrusion Investigation – 2018 Date December 8, 2017 Chemours #: 507944 AECOM #: 60388469 Scope of Work This authorization details the costs anticipated thru December 2018. This authorization covers routine monitoring and annual sampling as outlined in the building specific Mitigation Response Action Report (MRAR). The buildings with an MRAR are as follows; J-27, J-26, 745, and 1207. Task 16001- Project Management/Planning/Reporting This task covers project set up and correspondence between client and agencies. Additionally, this task includes time associated with completing necessary/required reporting to the agencies. This task also covers up to three meetings with the client, site management, or agencies. Task 18001- System O&M This task details the activities associated with conducting monthly O&M on the vapor mitigation systems in Buildings J-27, J-26, 745, and 1207. This includes yearly indoor air sampling, system monitoring, and monthly inspections. System monitoring and maintenance is a crucial step in the performance of the engineering control. Therefore, AECOM will conduct system O&M on a weekly basis at the 745 building. It is assumed that O&M visits will be needed once per week for the foreseeable future. Costs also include the Granular Activated Carbon (GAC) change outs and disposal. For buildings J-26, J-27, and 1207; AECOM will inspect the system’s performance and document any findings. Annual Indoor Air samples will be collected in accordance with the procedures outlined in the MRAR. Indoor air sample results will then be screened against building specific criteria and previously collected sub slab sample results, to determine the effectiveness of the system in removing soil vapors and eliminating the buildings Immediate environmental Concern (IEC) or Vapor Concern (VC) conditions. Lab costs and supplies are also included. This task includes time for any applicable site or area training. This task does not cover any subcontractor troubleshooting or mechanical repairs that may arise. This does not cover any additional sampling that is not outlined in the building specific MRAR. Project Team Roles and Responsibilities Dave Whelihan– Project Manager Tom McGee – Site Planning Resource Annie Dyroff – Monitoring and Sampling Resource Linda Wallace – Project Administrator Candia Carle – Project Chemist Schedule System inspections will be conducted monthly at all buildings. The system at building 745 will be monitored weekly. Building samples will be collected during the fall heating season. Cost A detailed cost estimate is provided in Attachment A. Page 2 Assumptions This work will be conducted in accordance with the terms and conditions of the legacy URS (now AECOM)-Chemours Master Services Agreement (MA-03492-13), any applicable Site Special Conditions, Site Security requirements, and area-specific requirements of the operating areas. All field activities will be conducted in accordance with appropriate Chemours Health and Safety requirements which will include: work permits, development of project-specific Health & Safety Plans or procedures, daily safety tailgate meetings, and routine field safety audits. Project Summary Estimate Description Detail Code Previously Authorized if applicable $ 8,000 Dollars Requested Chemours Costs 862200 $ - Chemours Subcontractor Costs 772000 $ 209,591 $ - AECOM Labor 721000 $ 317,372 $ AECOM Other Direct Costs 721001 $ 80,210 $ AECOM Subcontractor Costs 721001 $ 34,143 $ 701,147 Total New Authorization Amount $ 8,000 $ 209,591 8,780 $ 326,152 1,957 $ 82,167 $ 10,300 $ 44,443 $ 21,037 $ 722,184 AECOM Attachment A Detailed Costs Labor Employee Description Graduate Scientist Senior Scientist Clerk 4 Project Scientist Task 18001: 2018 System O&M Employee Name Dyroff, Anne P McGee, Thomas P (Tom) Wallace, Linda M Whelihan, David (Dave) Group Total Rate 36.53 71.64 51.90 73.65 January Hours Dollars 6 219.19 2 143.28 1 51.90 2 147.31 11 561.68 January Raw Amount Quantity Dollars 100.00 0.00 450.00 1 463.50 1 463.50 ODCs Expense Description Supplies Pine Group Total January Raw Amount Quantity Dollars 2,500.00 0.00 5,000.00 0.00 0 0.00 8,780 1,957 10,300 21,037 AECOM Contractor Costs Expense Description Carbon Changouts Lab Group Total Task Total Labor ODCs AECOM Contractor Costs Total March Hours Dollars 6 219.19 2 143.28 1 51.90 2 147.31 11 561.68 February Hours Dollars 6 219.19 2 143.28 0.00 147.31 509.78 2 10 March Quantity Dollars 0.00 0.00 0.00 0 0 March Quantity Dollars 0.00 0.00 0.00 February Quantity Dollars 0.00 0.00 0.00 0 February Quantity Dollars 0.00 0.00 0.00 0 April Hours Dollars 6 219.19 2 143.28 0.00 147.31 509.78 2 10 April Quantity Dollars 0.00 463.50 463.50 1 1 Hours 6 2 1 2 11 July Hours Dollars 6 219.19 2 143.28 1 51.90 2 147.31 11 561.68 August Hours Dollars 6 219.19 2 143.28 0 0.00 2 147.31 10 509.78 July August Quantity Dollars Quantity Dollars 0 0.00 0.00 1 463.50 0 0.00 1 463.50 0 0.00 June Quantity Dollars 0.00 0.00 0.00 0 0 0 July August Quantity Dollars Quantity Dollars 0.00 0.00 0.00 0.00 0.00 0 0.00 June Quantity Dollars 0.00 0.00 0.00 0 June Hours Dollars 6 219.19 2 143.28 0 0.00 2 147.31 10 509.78 CW VI Investigation 507944 May Dollars 219.19 143.28 51.90 147.31 561.68 May Quantity Dollars 0.00 0.00 0.00 0 April May Quantity Dollars Quantity Dollars 1 2,575.00 0.00 0.00 0.00 2,575.00 0 0.00 1 September Hours Dollars 6 219.19 2 143.28 1 51.90 2 147.31 11 561.68 October Hours Dollars 15 547.97 15 1,074.62 1 51.90 12 883.85 43 2,558.33 November Hours Dollars 6 219.19 2 143.28 2 103.80 4 294.62 14 760.88 December Quantity Dollars 0.00 0.00 0.00 December Hours Dollars 6 219.19 2 143.28 2 103.80 2 147.31 12 613.58 Total Quantity 1 4 5 Total Hours 81 37 10 36 164 Total ODCs 103.00 1,854.00 1,957.00 Total Loaded $ 2,959.01 2,650.73 519.00 2,651.54 8,780.28 0 November Quantity Dollars 0.00 0.00 0.00 0 Total AECOM Contractor 5,150.00 5,150.00 10,300.00 December Quantity Dollars 0.00 0.00 0.00 Total Quantity 2 1 3 October Quantity Dollars 0.00 463.50 463.50 1 1 October November Quantity Dollars Quantity Dollars 0.00 0.00 5,150.00 0.00 5,150.00 0 0.00 1 1 0 September Quantity Dollars 1 103.00 0.00 103.00 1 September Quantity Dollars 0.00 0.00 0.00 0 Page 1 of 1 Attachment 9 Salem Canal Sediment MNR O&M = $350,000 Notes: This estimate covers ongoing sampling and reporting to monitor the sediment remedy, monitored natural recovery (MNR), of sediment in Salem Canal through 2031 and assumes one round of sediment sampling every 4 years beginning in 2019, or 4 rounds of MNR sampling. In addition, one round of sediment sampling to delineate locations adjacent to selected outfalls is anticipated in 2018. The 2018 cost is based on the sampling completed in late 2016. Costs for the MNR sampling in 2019 and later are assumed to be similar in cost and based on a 7% discount rate. The total cost of each sampling event is $91,200 as detailed below: • Total sampling costs assume 34 samples collected per event and analyzed for VOC/SVOC ($1,300 per sample) for a total lab cost of $44,200. • AECOM costs for project management, field sampling, health & safety, waste management, and disposable equipment, assuming a 4 day field sampling event, are estimated at $17,000. • AECOM costs for work plan development, regulatory correspondence, data evaluation and reporting are $30,000 per sampling event. In addition to the sampling costs, it is assumed that an additional $30,000 in AECOM labor will be expended during revisions to the 2017 sediment investigation report and SLERA. Attachment 10 Inspection and Reporting of Seven (7) RCRA SWMUs = $221,000 Notes: This estimate includes ongoing inspection and reporting of closed RCRA SWMUs through 2047 at an annual cost of approximately $17,000 as described in the attached October 12, 2017 memo from J. Dougherty to A. Hartten. Costs beyond 2018 are based on net present value using a 7% discount rate. \ AECOM Chambers Works 67 Canal Road, PO Box 9001 Pedersen Building (M-1) Deepwater, NJ 08023 www.aecom.com Memorandum 856 540 4762 tel To Andrew Hartten, Chemours Project Director Subject CW - 2018 SWMU Inspections Chemours #:507204 From John F. Dougherty, AECOM Project Manager AECOM #: TBD Date October 12, 2017 1.0 Scope of Work The scope of work for this project entails the quarterly and semi-annual inspections of seven SWMUs on the Chambers Works plant site including the record keeping. Also added to the inspection process but not required to be reported are SWMU 52, Salem Canal Sheetpile wall, and the T-29 Remediation Area. The soil vault and leachate collection system will be operated and maintained after sub-freezing temperatures end probably beginning in April. The Cube Shop erosion area and other miscellaneous areas will be inspected as well. Also, the weekly inspections of the A Basin decon/temporary 90 day storage pad. The Biennial Certification Monitoring Report is due in 2018. 1.2 Project Team Roles and Responsibilities John Dougherty, AECOM Project Manager, Inspector Ray Baranowski, AECOM Inspector Unitas Todd, AECOM Inspector Linda Wallace, AECOM Administrative Assistant Nicole Wendel, AECOM Assistant Project Engineer 2.0 Schedule Ongoing support beginning December 30, 2017 through December 28, 2018. 3.0 Cost A detailed cost estimate is presented in Attachment A. 4.0 Assumptions This work will be conducted in accordance with the terms and conditions of the Master Services Agreement (MA-00433-17, PO # LBIO-66959) between the Chemours Company FC, LLC and AECOM Technical Services (effective January 1, 2017, expires December 31, 2019), any applicable Chambers Works Site Special Conditions, Chambers Works Site Security requirements, and area-specific requirements of the Chambers Works operating areas. All field activities will be conducted in accordance with appropriate Chemours Health and Safety requirements which will include: Chambers Works work permits, development of project-specific Health & Safety Plans or procedures, daily safety tailgate meetings, and routine field safety audits. 5.0 Project Summary Estimate Description Chemours Costs Chemours Subcontractor Costs AECOM Labor AECOM Other Direct Costs Total Detail Code 862200 772000 721000 721001 Previously Authorized if applicable $ $ $ $ $ - Dollars Requested $ $ $ $ $ 17,038 17,038 New Authorization Amount $ $ $ 17,038 $ $ 17,038 AECOM Page 2 AECOM Attachment A Detailed Costs Task Total Task 18001: PM & Inspections Task 18002: Report Creation Grand Total ODCs $0.00 $0.00 $0.00 2018 SWMU Inspections Labor $13,351.56 $3,686.00 $17,037.56 AECOM Contractor Costs $0.00 $0.00 $0.00 Total $13,351.56 $3,686.00 $17,037.56 Page 1 of 3 Labor Employee Description Technician 5 Technician 3 Clerk 4 Task 18001: PM & Inspections Employee Name Dougherty, John F Todd, Unitas S Wallace, Linda M Group Total Task Total Labor Total Rate 88.93 50.95 53.33 13,351.56 13,351.56 2018 SWMU Inspections January February March April May June Hours Dollars Hours Dollars Hours Dollars Hours Dollars Hours Dollars Hours Dollars 10 889.30 10 889.30 10 889.30 10 889.30 10 889.30 5 444.65 4 203.80 5 254.75 4 203.80 5 254.75 4 203.80 5 254.75 2 106.66 0 0.00 0 0.00 0 0.00 0 0.00 0.5 26.67 16 1,199.76 15 1,144.05 14 1,093.10 15 1,144.05 14 1,093.10 10.5 726.07 July August Hours Dollars Hours Dollars 5 444.65 5 444.65 4 203.80 5 254.75 0 0.00 0 0.00 9 648.45 10 699.40 September October November Hours Dollars Hours Dollars Hours Dollars 10 889.30 15 1,333.95 15 1,333.95 4 203.80 5 254.75 4 203.80 0.5 26.67 2 106.66 0 0.00 14.5 1,119.77 22 1,695.36 19 1,537.75 December Hours Dollars 10 889.30 5 254.75 2 106.66 17 1,250.71 Total Hours 115 54 7 176 Total Loaded $ 10,226.95 2,751.30 373.31 13,351.56 Page 2 of 3 Task Total Labor Task 18002: Report Creation Employee Name Wendel, Nicole D Group Total Labor Total Employee Description Project Engineer 3,686.00 3,686.00 October Hours Dollars 0.00 0.00 0 0 November Hours Dollars 0.00 0.00 2018 SWMU Inspections September Hours Dollars 40 3,686.00 40 3,686.00 December Hours Dollars 0.00 0.00 0 Total Hours 40 40 Total Loaded $ 3,686.00 3,686.00 Page 3 of 3 Attachment 11 O&M of DNAPL Recovery Systems = $1,102,000 Notes: This estimate includes ongoing recovery and disposal of NAPL from 18 wells in which it is currently present for an indeterminent timeframe. It is assumed that $83,000 per year will be spent from 2018 through 2047 as described in the attached December 8, 2017 memo from K. West to A. Hartten. Costs for 2019 and later are based on net present value using a 7% discount rate. \ Memorandum AECOM Chambers Works 67 Canal Road, PO Box 9001 Pedersen Building (M-1) Deepwater, NJ 08023 www.aecom.com To Andrew Hartten, Chemours Project Director cc Scott Norcross, AECOM Project Director Subject CW – 2018 RCRA Corrective Measures – DNAPL Program From Kathryn West, AECOM Project Manager Date December 8, 2017 856 540 2056 tel Chemours #:507773 AECOM #: TBD 1.0 Scope of Work The purpose of the Resource and Recovery Act (RCRA) Dense Non-Aqueous Phase Liquid (DNAPL) recovery program is to remove contaminated source material from groundwater as part of the short-term and long-term remediation goals for the Chambers Works site. This change order covers the continued support from AECOM for the 2018 routine O&M activities, recovery system modifications, former Antiknocks area existing well recovery, sampling and waste disposal activities. 1.1 Tasks Task 18001 – Routine O&M (Assume January 2018- Jan 2019) AECOM will perform monthly inspections, operations, and management of the recovery systems, and manage waste disposal of DNAPL recovered from monitoring wells in two main areas of Chambers Works manufacturing area D15-P08B (PCB), F09-M01B (PCB) and the Salem Canal SPB area (G05). The sandblast area (L13-PCB area) DNAPL recovery decreased to 0% recovery in July 2014 and therefore the existing system was taken off-line and the well moved to the monthly inspection monitoring program. Specific tasks include: 1. Complete monthly inspections of 16 monitoring wells and recover DNAPL when present from locations D15-M01C, H11-R01CD, K11,-M01B, L12-M03B, L13-M02B, J10-M02B (replacement for J10-M01B), J12-M01B, J12-M02B, I12-M02B, M12-M02B, M12-M04B, G05-M02B, G06M02B, G06-M03B, G06-M04B, and L13-M01B. 2. Inspect and maintain the current DNAPL recovery systems by completing such tasks as purchasing drums, change out nitrogen tanks, replacing batteries, and fixing of any inoperable pumping units as necessary. 3. Interact with site waste management personnel (Mitch Press, Brian Boettler, Jeff Crawford, and Brenda Simmons) to schedule, complete manifests, complete waste transportation orders (WTOs), inspect, and properly dispose of both PCB and non-PCB DNAPL waste recovered from on-site NAPL recovery wells. 4. Maintain monthly reporting spreadsheets that are submitted annually to the site waste management team (for use in PCB reporting). Keep paperwork in order for potential regulatory agency inspections (upon request) or site audits. 5. Establish and maintain monthly satellite collection areas (Salem Canal-G05 area, F09-M03B, DNAPL collected at D15-P08B is stored at Chem Waste) and complete drum inspections as required in the legacy DuPont Chambers Works Hazardous Waste Operations 90 Day Accumulation Area(s) contingency plan for RCRA Hazardous Waste Program (dated August 4, 2009). Page 2 6. Maintain required annual reporting information for environmental legacy (CRG’s) treatability samples collected from Chambers Works site. 7. Maintain required annual area safety orientation for personnel (e.g. SET, K-37). 8. Health and safety plan review will include updating any procedures to conform to the site specific updates. The site-wide Health and Safety Plan which covers DNAPL surveying and removal tasks was reviewed and updated in 2012. The TEL Health and Safety Plan which covers DNAPL surveying and removal tasks for well F10-P01B was reviewed and updated in 2017. AECOM will complete an annual Project Safety Analysis (PSA) meeting and at least one field activity audit during the year. AECOM will cross train new field personnel in the operation of the DNAPL systems. 9. If DNAPL is observed in a well, then it will be recovered from the wells using disposable bailers. DNAPL is collected in specially lined new drums and accumulates at the well location under RCRA satellite collection area rules, except for DNAPL from D15-P08B which is collected and transported to a stainless steel 35-gallon drum which is maintained in the Chem Waste RCRA Pad area. The drums are removed every 30-days (PCB) or 60 days (TEL Caustic Pad), manifested to the on-site 90-day RCRA pad, and disposed of using the Chambers Works site waste management system. 10. Additional sampling and analysis may be required to update the waste disposal characterization profile(s) as per request of the CWKs site environmental waste managers. Characterization includes at a minimum a full VOC and SVOC profile and PCB analysis. 11. AECOM personnel are involved and support Chemours personnel in the review and tracking of treatability studies using samples from the CWKs site under RCRA. AECOM Labor $29,434 ODCs $2,575 Task Total $32,009 1.2 Task 18002 - NAPL Recovery System Modifications/Plant Meetings/PM Support The 2018 change order included evaluation of DNAPL results with site personnel to outline potential issues that would need to be addressed prior to completion of various site documentation (work plans, test authorizations, pre-startup safety reviews and any waste management (WCF) modifications) before initiating recovery from new wells It is expected that three working meetings with the site, CRG and other resources will be necessary for any closure or modifications of existing TA, or if other locations need to be added to the recovery program. In addition, this change order will cover any disposal discussions with Chem Waste personnel. AECOM Labor 1.3 $2,039 Task 18003 – Recovery of TEL NAPL from F10-P01B Under the RCRA DNAPL job from 2013-2016 the Antiknocks area DNAPL recovery planning, scheduling, and attendance with project stakeholder which identified the project objectives, goals, and critical activities for collection of DNAPL were completed. Recovery assessment testing of 8 wells was completed in December 2015 with only two wells; F10-P01B and F09-M03B, showing recoverable DNAPL. During the Interior Investigation sampling organo lead was found in the NAPL from one well, F10-P01B. A Health and Safety Plan (HASP) and Waste Management (WM) plan using the outlined tasks as a framework for the field activities was completed and reviewed by CWKs/CRG personnel. The HASP outlined safety procedures to be used while handling TEL solids and liquids including procedures, air monitoring, and personnel protective equipment (PPE) requirements. The site required Test Authorization (TA) was completed on November 13, 2015. When handling any media with Organo Pb, personnel are required to be in Level B PPE with air monitoring and personnel required medical monitoring including blood lead testing. Page 3 Per the site TA, DNAPL recovery will not occur at temperatures above 80° F due to the low flash point of the material, and hence recovery activities will be suspended in summer months (June/July August/Sept), since drums with TEL are restricted from sitting on the Chem Waste pad during high heat. Recovery activities are anticipated to occur from January to May, stop in the summer, and start up in the fall (October) of 2018. Based on current recovery activities well F10-P01B well can produce approximately three to 5 gallons of DNAPL on a twice a week pumping schedule.TEL NAPL must be stored with groundwater on top of the NAPL and requires 55-gallon overpack drums. The amount of DNAPL recovery from the well will be recorded daily. Notes included a summary of DNAPL volume and total volume removed (DNAPL + water) after short settling time Tracking the amount of DNAPL recovered and other waste management documentation and accumulation amounts will be continued during any recovery activities. The drum(s) will be staged at a collection area near the former air stripper (Caustic Pad) or moved directly to Chem Waste area under a WTO. AECOM is required to move drums from Caustic Pad to Chem Waste. The weekly recovery information will be summed up for each well over the one month period and added to the monthly status table. Recovery information will be maintained in the RCRA files and reported in site permit documentation (DGW report). Under the current TA, weekly communications to site personnel is required to be submitted prior to initiating recovery activities. It is expected that DNAPL recovery can proceed throughout 2018 under the approved TA document which was reviewed by site personnel in September 2017. AECOM Labor $25,581 ODCs $19,476 Chemours Contractor Costs (Chem Waste Etimate) $6,150 Task Total $48,623 Total Project Estimate $82,671 2.0 Schedule Additional DNAPL recovery activities in the beginning of 2018 used funds authorized in 2016. NAPL recovery at the TEL well is estimated to continue through May, shut down during the high heat of summer and resume in the beginning of September 2018 until winter shutdown period begins (mid to late October or November 2018). Project Team Roles and Responsibilities Andrew Hartten CRG/Chemours Project Director Brian Ambrose CRG/Chemours Health and Safety Kathryn West AECOM PM/Field Kathryn Sova AECOM Health and Safety Technical Lead Elizabeth Bishop AECOM Waste Management Technical Resource John Dougherty AECOM CWKs Site Support Unitas Todd AECOM CWKs DNAPL Field Team Lead Derek Knowles, Don Layman AECOM Field Technical and Instrumentation Support Linda Wallace/Betty Baldwin AECOM Project Management and H&S Support 3.0 Cost A detailed cost estimate is presented in Attachment A. Page 4 4.0 Assumptions This work will be conducted in accordance with the terms and conditions of the Master Services Agreement (MA-00433-17, PO # LBIO-66959) between the Chemours Company FC, LLC and AECOM Technical Services (effective January 1, 2017, expires December 31, 2019), any applicable Chambers Works Site Special Conditions, Chambers Works Site Security requirements, and area-specific requirements of the Chambers Works operating areas. All field activities will be conducted in accordance with appropriate Chemours Health and Safety requirements which will include Chambers Works work permits, development of project-specific Health & Safety Plans or procedures, daily safety tailgate meetings, and routine field safety audits. 5.0 Project Summary Estimate A detailed cost estimate is presented in Attachment A. Description Detail Code Previously Authorized if applicable $ - New Authorization Amount 6,150 $ 6,150 Dollars Requested Chemours Costs 862200 Chemours Subcontractor Costs 772000 $ - $ - AECOM Labor 721000 $ - $ 57,054 $ 57,054 AECOM Other Direct Costs 721001 $ - $ 19,467 $ 19,467 AECOM ADQM 721002 $ - $ - $ - $ - $ 82,671 $ 82,671 Total $ AECOM Attachment A Detailed Costs Task Total Task 18001: Routine O&M Task 18002: Meetings/Modifications Task 18003: TEL Recovery Activities $57,053.68 Labor $29,433.64 $2,039.34 $25,580.70 $19,467.00 ODCs $2,575.00 $0.00 $16,892.00 $0.00 AECOM Contractor Costs $0.00 $0.00 $0.00 $6,150.00 Chemours Contractor Costs $0.00 $0.00 $6,150.00 CW-2018A RCRA DNAPL Grand Total $0.00 Chemours ADQM Allocation Costs $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 Total $32,008.64 $2,039.34 $48,622.70 $82,670.68 Page 1 of 4 Task 18001: Routine O&M Employee Name Todd, Unitas S Wallace, Linda M West, Kathryn A (Kathy) Group Total Task Total Expense Description Tubing/ Misc Group Total Labor ODCs Total Labor Employee Description Technician 3 Clerk 4 Project Scientist (Sci IV) ODCs Filename: CW-2018 RCRA DNAPL Annual Table.xlsx Sheet: Task 18001 Rate 50.95 53.33 79.25 January Hours Dollars 35 1,783.25 4 213.32 8 634.00 47 2,630.57 January Raw Amount Quantity Dollars 2,500.00 0.00 0 0.00 29,433.64 2,575.00 32,008.64 February Hours Dollars 35 1,783.25 0.00 634.00 2,417.25 8 43 February Quantity Dollars 0.00 0 0.00 March Hours Dollars 35 1,783.25 0.00 634.00 2,417.25 8 43 March Quantity Dollars 0.00 0 0.00 May Hours Dollars 35 1,783.25 0.00 634.00 2,417.25 May Quantity Dollars 0.00 0 0.00 8 43 June Hours Dollars 35 1,783.25 0.00 634.00 2,417.25 June Quantity Dollars 1 2,575.00 1 2,575.00 8 43 CW-2018A RCRA DNAPL April Hours Dollars 35 1,783.25 0.00 634.00 2,417.25 8 43 April Quantity Dollars 0.00 0 0.00 July Hours Dollars 35 1,783.25 0.00 634.00 2,417.25 8 43 July Quantity Dollars 0.00 0 0.00 August Hours Dollars 35 1,783.25 0.00 634.00 2,417.25 8 43 August Quantity Dollars 0.00 0 0.00 September Hours Dollars 35 1,783.25 0.00 634.00 2,417.25 8 43 September Quantity Dollars 0.00 0 0.00 October Hours Dollars 35 1,783.25 0.00 634.00 2,417.25 8 43 October Quantity Dollars 0.00 0 0.00 November Hours Dollars 35 1,783.25 0.00 634.00 2,417.25 8 43 November Quantity Dollars 0.00 0 0.00 December Quantity Dollars 0.00 0 0.00 December Hours Dollars 35 1,783.25 4 213.32 8 634.00 47 2,630.57 Total Quantity 1 1 Total Hours 420 8 96 524 Total ODCs 2,575.00 2,575.00 Total Loaded $ 21,399.00 426.64 7,608.00 29,433.64 Page 2 of 4 Labor Employee Description Senior Scientist (Sci V) Principal Scientist (Sci VI) Project Scientist (Sci IV) Task 18002: Meetings/Modifications Task Total Employee Name Bishop, Elizabeth B (Betsy) Sova, Kathryn A West, Kathryn A (Kathy) Group Total Labor Total Rate 104.36 128.10 79.25 2,039.34 2,039.34 January Hours Dollars 0.00 0.00 79.25 79.25 1 1 February Hours Dollars 0.00 0.00 79.25 79.25 1 1 March Hours Dollars 0.00 0.00 79.25 79.25 1 1 April Hours Dollars 2 208.72 2 256.20 2 158.50 6 623.42 June Hours Dollars 0.00 0.00 79.25 79.25 1 1 CW-2018A RCRA DNAPL May Hours Dollars 0.00 0.00 79.25 79.25 1 1 July Hours Dollars 0.00 0.00 79.25 79.25 1 1 August Hours Dollars 2 208.72 2 256.20 2 158.50 6 623.42 September Hours Dollars 0.00 0.00 79.25 79.25 1 1 October Hours Dollars 0.00 0.00 79.25 79.25 1 1 November Hours Dollars 0.00 0.00 79.25 79.25 1 1 December Hours Dollars 0.00 0.00 79.25 79.25 1 1 Total Hours 4 4 14 22 Total Loaded $ 417.44 512.40 1,109.50 2,039.34 Page 3 of 4 Labor Employee Description Technician 3 Project Scientist (Sci IV) Technician 5 Task 18003: TEL Recovery Activities Employee Name Todd, Unitas S West, Kathryn A (Kathy) Dougherty, John F Group Total ODCs Rate 50.95 79.25 88.93 January Hours Dollars 15 764.25 15 1,188.75 10 889.30 40 2,842.30 January Amount Quantity Dollars 550.00 0.00 1,750.00 0.00 0 0.00 February Hours Dollars 15 764.25 15 1,188.75 10 889.30 40 2,842.30 April Hours Dollars 15 764.25 15 1,188.75 10 889.30 40 2,842.30 Hours 15 15 10 40 May Dollars 764.25 1,188.75 889.30 2,842.30 CW-2018A RCRA DNAPL March Hours Dollars 15 764.25 15 1,188.75 10 889.30 40 2,842.30 February March Quantity Dollars Quantity Dollars 4 2,200.00 0.00 0.00 0.00 4 2,200.00 0 0.00 April May Quantity Dollars Quantity Dollars 4 2,200.00 0.00 1 1,750.00 0.00 5 3,950.00 0 0.00 January February March April May Raw Amount Quantity Dollars Quantity Dollars Quantity Dollars Quantity Dollars Quantity Dollars 750.00 1 772.50 1 772.50 1.00 772.50 1 386.25 1 386.25 250.00 1 257.50 0.00 1.00 257.50 0.00 1 257.50 250.00 1 257.50 1 257.50 1.00 257.50 1 257.50 1 257.50 500.00 1 515.00 0.00 0.00 1 515.00 0.00 425.00 1 437.75 1 437.75 1.00 437.75 1 437.75 0.00 500.00 1 515.00 0.00 0.00 0.00 0.00 250.00 1 257.50 0.00 0.00 0.00 0.00 7 3,012.75 3 1,467.75 4 1,725.25 4 1,596.50 3 901.25 Chemours Contractor Costs Expense Description Chem Waste Disposal $750/drum Lancaster Labs Waste disposal sample Group Total 25,580.70 16,892.00 6,150.00 48,622.70 Group Total Expense Description SCBAs (Total Safety) Tubing Drums Containers 5-gas meter Vermiculite Task Total Labor ODCs Chemours Contractor Costs Total Filename: CW-2018 RCRA DNAPL Annual Table.xlsx Sheet: Task 18003 September Hours Dollars 15 764.25 15 1,188.75 10 889.30 40 2,842.30 October Hours Dollars 15 764.25 15 1,188.75 10 889.30 40 2,842.30 October Quantity Dollars 0.00 0.00 0.00 0 November Hours Dollars 15 764.25 15 1,188.75 10 889.30 40 2,842.30 November Quantity Dollars 0.00 0.00 0.00 0 December Hours Dollars 15 764.25 15 1,188.75 10 889.30 40 2,842.30 December Quantity Dollars 0.00 0.00 0.00 0 Total Hours 135 135 90 360 Total Loaded $ 6,878.25 10,698.75 8,003.70 25,580.70 Total ODCs 6,180.00 1,287.50 2,317.50 2,060.00 3,502.00 1,030.00 515.00 16,892.00 Total Total Quantity Chemours Contractor 8 4,400.00 1 1,750.00 9 6,150.00 September October November December Total Quantity Dollars Quantity Dollars Quantity Dollars Quantity Dollars Quantity 1 772.50 1 772.50 1 772.50 1 772.50 8 1 257.50 0.00 1 257.50 0.00 5 1 257.50 1 257.50 1 257.50 1 257.50 9 1 515.00 0.00 1 515.00 0.00 4 1 437.75 1 437.75 1 437.75 1 437.75 8 1 515.00 0.00 0.00 0.00 2 1 257.50 0.00 0.00 0.00 2 7 3,012.75 3 1,467.75 5 2,240.25 3 1,467.75 38 September Quantity Dollars 0.00 0.00 0.00 0 Page 4 of 4 Attachment 12 O&M of IWS Groundwater Pump and Treat System = $9,150,000 Notes: This estimate includes O&M of the eight pumping wells associated with the Interceptor Well Pumping System (IWS) to maintain site groundwater control through 2047. This cost assumes $890,000 spent in 2018 as described in the attached October 31, 2017 memo from T. McGee to A. Hartten, and assumes $740,000 per year from 2019 to 2024, $630,000 per year from 2025 through 2047, and system optimization and a reduction of flow by 25%. Costs for 2019 and later are based on net present value using a 7% discount rate. \ AECOM Chemours Chambers Works Deepwater, NJ 08023 www.aecom.com Memorandum To 856 540 2402 tel Andrew Hartten, Chemours Project Director CC Subject CW – 2018 IWS Operations Support From Tom McGee, AECOM Project Manager Date October 31, 2017 Chemours #:507012 AECOM #: (TBD) 1.0 Scope of Work This authorization request includes a breakdown for the Reserve Costs for the operation and maintenance (O&M) the Interceptor Well System (IWS) for 2018. Non-Reserve costs associated with IWS O&M will be covered under a separate CRG cost code (507012). Task 18001: Operations & Maintenance AECOM will manage the O&M activities of the IWS so that all wells are pumping at their allotted flows to maintain a monthly daily average of 1.0 million gallons. Flow rates will be monitored to maintain compliance with the permitted monthly daily average. AECOM will provide support for troubleshooting, maintenance, reporting, and repairs. AECOM will troubleshoot well issues and have repairs made by subcontractors through AECOM purchase orders. AECOM will ensure that all flowmeters are within calibration date, flowmeters will be calibrated by Mid American Meter. This quote estimates that AECOM will need to redevelop two wells in 2018 and will replace one pump/motor. This estimate assumes that maintenance needs in 2018 will be similar to what was experienced in previous years. This work will be performed by AECOM subcontractors. AECOM will also provide contracting support to maintain wells and have any needed repairs completed. AECOM will assist in updating the waste characterization forms. AECOM Labor Cost = $65,230 AECOM Sub Contractors = $95,790 (EMSI = $51,500; WJV = $2,060; Composites = $4,120; RAI = $15,450; PSC = $12,360; Eagles Services = $10,300) ODC’s = $2,935 (Flowmeters = $2,060; Supplies/ Communications = $875) Chemours Costs = $725,313. (assumes operating utility costs = $60,422.75 per month) All non –reserve SET Treatment costs are covered by a separate CRG project. 2018 Project Total = $889,268. 1.1 Project Team Roles and Responsibilities McGee, III, Thomas P. Carle, Candia Dougherty, John F. Knowles, Derek Wallace, Linda M. Project Manager ADQM Resource Health and Safety Resource Field Resource Office Resource Page 2 2.0 Schedule O&M oversight thru December 28, 2018. AECOM will be responsible for oversight of wells, maintenance, and pumping rates. 3.0 Cost Task Total Labor 65,230.20 ODCs 2,935.00 AECOM Contractor Costs 95,790.00 Chemours Costs 725,313.00 Total 889,268.20 4.0 Assumptions This work will be conducted in accordance with the terms and conditions of the Master Services Agreement (MA-00433-17, PO # LBIO-66959) between the Chemours Company FC, LLC and AECOM Technical Services (effective January 1, 2017, expires December 31, 2019), any applicable Chambers Works Site Special Conditions, Chambers Works Site Security requirements, and area-specific requirements of the Chambers Works operating areas. All field activities will be conducted in accordance with appropriate Chemours Health and Safety requirements which will include Chambers Works work permits, development of project-specific Health & Safety Plans or procedures, daily safety tailgate meetings, and routine field safety audits. 5.0 • • • Objectives Maintain well motors, pumps, and flow meters. Perform line breaks and troubleshoot issues. Maintain a monthly daily average of 1.0 M-Gal. 6.0 Project Summary Estimate Description Chemours Costs Chemours Subcontractor Costs AECOM Labor AECOM Subcontractor Costs AECOM Other Direct Costs AECOM - ADQM Allocation Total Detail Code 862200 772000 721000 721001 721002 Previously Authorized (if applicable) $ $ $ $ $ $ - Dollars Requested $ 725,313 $ $ $ $ $ 65,230 95,790 2,935 889,268 New Authorization Amount $ 725,313 $ $ 65,230 $ 95,790 $ 2,935 $ $ 889,268 Attachment A Detailed Costs Task 18001: 2018 IWS O&M Labor Employee Description Technician 5 Project Scientist (Sci IV) Clerk 4 Administrator 5 ODCs Well Maintainence FRP Piping Misc Electrician Insulation Vac Truck AECOM Contractor Costs Employee Name Dougherty, John F McGee, Thomas P (Tom) Wallace, Linda M Dugosh, Joey W Group Total Expense Description Communication Supplies Mid American Meter Group Total Expense Description EMSI Composites WJV RAI Eagles PSC Group Total Chemours Costs Expense Description SET Utility Costs (Reserve) Group Total Task Total Labor ODCs AECOM Contractor Costs Chemours Costs Total Filename: 60xxxxx_CW IWS O&M 2018.xlsx Sheet: 18001 Rate 88.93 73.62 53.33 81.67 Raw Amount 30.00 100.00 1,000.00 Raw Amount 25,000.00 2,000.00 2,000.00 5,000.00 5,000.00 12,000.00 Amount 60,442.75 65,230.20 2,935.00 95,790.00 725,313.00 889,268.20 January Hours Dollars 16 1,422.88 50 3,681.00 8 426.64 4 326.68 78 5,857.20 January Dollars 30.00 103.00 0.00 133.00 February Hours Dollars 16 1,422.88 50 3,681.00 8 426.64 4 326.68 78 5,857.20 February # Dollars 1 30.00 0.00 1,030.00 1,060.00 1 2 # 1 1 2 # 1 1 February Dollars 60,442.75 60,442.75 February # Dollars 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0 January Dollars 60,442.75 60,442.75 January # Dollars 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0 # 1 1 CW - 2018 IWS O&M 60xxxxx September Hours Dollars 16 1,422.88 50 3,681.00 4 213.32 0.00 5,317.20 September Dollars 30.00 103.00 0.00 133.00 October Hours Dollars 16 1,422.88 50 3,681.00 4 213.32 0.00 5,317.20 70 November Hours Dollars 16 1,422.88 50 3,681.00 8 426.64 4 326.68 78 5,857.20 October # Dollars 0.00 0.00 0.00 0.00 0.00 12,360.00 12,360.00 1 0 November # Dollars 0.00 0.00 0.00 0.00 0.00 0.00 0.00 1 November # Dollars 1 30.00 0.00 0.00 30.00 1 1 # 1 1 November Dollars 60,442.75 60,442.75 October Dollars 60,442.75 60,442.75 October # Dollars 1 30.00 0.00 0.00 30.00 70 70 August Hours Dollars 16 1,422.88 50 3,681.00 4 213.32 0.00 5,317.20 June Dollars 1,422.88 3,681.00 213.32 0.00 5,317.20 1 1 1 # 1 1 70 70 # July Dollars 1,422.88 3,681.00 213.32 0.00 5,317.20 May Dollars 1,422.88 3,681.00 213.32 0.00 5,317.20 # 1 Hours 16 50 4 70 # Hours 16 50 4 April Dollars 1,422.88 3,681.00 213.32 0.00 5,317.20 Hours 16 50 4 70 Hours 16 50 4 March Hours Dollars 16 1,422.88 40 2,944.80 4 213.32 0.00 4,581.00 60 # 1 # 1 2 2 # 1 # 1 June Dollars 30.00 0.00 0.00 30.00 2 2 1 July Dollars 0.00 0.00 0.00 0.00 0.00 0.00 0.00 August # Dollars 1 30.00 0.00 1,030.00 1,060.00 May Dollars 30.00 103.00 0.00 133.00 0 1 2 2 June Dollars 0.00 0.00 0.00 5,150.00 0.00 0.00 5,150.00 1 1 July Dollars 30.00 103.00 0.00 133.00 April Dollars 30.00 0.00 0.00 30.00 1 # 1 1 # 1 1 1 May Dollars 0.00 0.00 0.00 0.00 0.00 0.00 0.00 July Dollars 60,442.75 60,442.75 # 1 1 March Dollars 30.00 103.00 0.00 133.00 0 # 1 1 # 1.00 1.00 April Dollars 25,750.00 0.00 0.00 0.00 0.00 0.00 25,750.00 June Dollars 60,442.75 60,442.75 September # Dollars 0.00 0.00 2,060.00 5,150.00 5,150.00 0.00 12,360.00 1 # 1 1 3 March Dollars 0.00 2,060.00 0.00 5,150.00 5,150.00 0.00 12,360.00 May Dollars 60,442.75 60,442.75 August # Dollars 1 25,750.00 1 2,060.00 0.00 0.00 0.00 0.00 27,810.00 3 # 1 1 # 1 1 April Dollars 60,442.75 60,442.75 September Dollars 60,442.75 60,442.75 # 1 1 # 1 1 March Dollars 60,442.75 60,442.75 August Dollars 60,442.75 60,442.75 # 1 1 0 December # Dollars 0.00 0.00 0.00 0.00 0.00 0.00 0.00 1 December # Dollars 1 30.00 0.00 0.00 30.00 December Hours Dollars 16 1,422.88 50 3,681.00 8 426.64 4 326.68 78 5,857.20 Total # 2 2 1 3 2 1 11 Total # 12 5 2 19 Total Hours 192 590 64 16 862 Total Chemours Costs 725,313.00 725,313.00 Total AECOM Contractor 51,500.00 4,120.00 2,060.00 15,450.00 10,300.00 12,360.00 95,790.00 Total ODCs 360.00 515.00 2,060.00 2,935.00 Total Loaded $ 17,074.56 43,435.80 3,413.12 1,306.72 65,230.20 December Dollars 60,442.75 60,442.75 Total # 12 12 # 1 1 Page 1 of 1 Attachment 13 Revised Eco Investigation of Delaware River = $200,000 Notes: An additional phase of sediment sampling in the Delaware River is planned for 2018 after perimeter hydraulic control is attained by the installation of the AOC 1 SPB in 2017. Based on costs incurred to complete previous investigations and a conceptual understanding of the required scope, which is subject to future refinement, the budgetary estimate for this investigation is $200,000. Attachment 14 O&M of Groundwater Monitoring System = $3,573,000 Notes: This estimate includes groundwater sampling and groundwater contour elevation mapping to confirm sitewide groundwater control and other programs required by NJPDES Discharge to Groundwater (DGW) Permit Nos. NJ0083429 and NJ0105872 through 2047 as reported in Semi-Annual DGW status reports. These programs include: • Closure and Post-Closure Groundwater Monitoring Program for the A, B, and C Basins (seven wells) (Permit No. NJ0083429) • Perimeter Monitoring Program (38 wells) (Permit No. NJ0083429) • Post Closure Monitoring for RCRA Units (four wells) (Permit No. NJ0083429) • On-Site Perfluorooctanoic Acid (PFOA) Monitoring Program (36 wells) (Permit No. NJ0083429) • Secure C Landfill Corrective Action Monitoring Program (five wells) (Permit No. NJ0105872) • Secure C Landfill Detection Monitoring Program (four wells) (Permit No. NJ0105872) • Evaluation of the IWS effectiveness • Evaluation of the C Landfill Corrective Action Pumping system effectiveness • Evaluation of E Aquifer groundwater containment system effectiveness • T29 Area sampling and evaluation • Salem Canal groundwater sampling and evaluation • Classification Exception Area (CEA) recertifications • Permit renewals and/or groundwater Remedial Action Permits This cost assumes $393,000 in 2018, as described in the attached November 2, 2017 memo from T. McGee to A. Hartten and assumes $360,000 in 2019, and $350,000 per year from 2020 to 2024. Costs from 2025 to 2047 are $200,000 per year assuming system optimization. Costs for 2019 and later are based on net present value using a 7% discount rate. \ Memorandum To AECOM Chemours Chambers Works Deepwater, NJ 08023 www.aecom.com 856 540 2402 tel Andrew Hartten, Chemours Project Director CC Subject CW – Groundwater Compliance 2018 From Tom McGee, AECOM Project Manager Date November 2, 2017 1.0 Scope of Work Chemours #:507141 AECOM #: 60xxxx This authorization covers the continued support of the 2018 Chemours Chambers Works Groundwater Compliance activities. This includes field sampling and reporting to meet regulatory requirements of two NJPDES-DGW permits (NJ0083429 and NJ0105872), the water allocation permit, PFOA Monitoring Program submittals, and the CEA recertification. This project also covers correspondence with federal and state agencies, and items that arise out of agency status meetings. The 2018 Scope of Work follows the tasks listed below. 1.1 Task 18001: Project Management/Health & Safety/Waste Management This task includes budget and authorization tracking, participation in status meetings/negotiations with regulatory agencies, coordination of Health & Safety, updating the project Waste Management Plan, HASP reviews, and PSAs for field activities. Safety audits will be performed for each week during the groundwater sampling events in January and July. Assumptions: AECOM Labor = $9,589 AECOM Other Direct Costs (ODC) = $371 Totals = $9,960 1.2 Task 18002: Data Evaluation & Reporting This task includes data evaluation and creation of the Semi-Annual DGW Report and associated sections due April 30 and October 31. This will also cover re-certification of the CEA. Create monthly reports for C Landfill, quarterly water allocation reports, semi-annual water levels, annual surface water use report, and providing CRG-generated data to the site. A semi-annual PFOA concentration map and summary table will be provided to NJDEP within 90 days after sampling. Assumptions: AECOM Labor = $109,964 AECOM ODC (FedEx) = $206 Totals = $110,170 1.3 Task 18003: Monitoring This task includes groundwater sampling in January and July (Perimeter Monitoring, Basin Closure, Secure C Landfill Corrective Action, PFOA Monitoring, Salem Canal Monitoring, T29 Monitoring, and Water Allocation). Semi-Annual sampling of the E Aquifer Program and a March/April C Aquifer Well sampling events are also included. Other field work includes semi-annual allocation and site-wide water levels, maintaining of site monitoring wells, maintaining access to wells, and contractor oversight for repairs to monitoring wells. Assumptions: AECOM Labor = $66,141 AECOM ODC = $10,455 (Includes Supplies, Rentals) AECOM Contractor Costs = $36,050 (Includes WJV, SGS) Laboratory Analytical = $149,595 Totals = $262,241 1.4 Task 18004: Statistical Analysis AECOM (Conshohocken) will generate a brief statistical report for 2H17 and 1H18 sampling events as required by the NJPDES-DGW permit. Assumptions: AECOM Labor = $11,202 Grand Total for 2018 = 1.1 $393,572 Tasks 18001 - PM/H&S 18002 - Reporting 18003 - Monitoring 18004 – Statistical Analysis 18CON - 2018 Contingency 1.2 Project Team Roles and Responsibilities Andrew Hartten - Chemours, Project Director Tom McGee - AECOM, Project Manager Scott Norcross, Scott Morgan - AECOM, Technical Support Candia Carle, Michael Aucoin - AECOM, ADQM Linda Wallace – AECOM, Project Administrator & Document Creation Matt Layton - AECOM, GIS Christine Wallace - AECOM, EIM Maria Hunt - AECOM, Technical Editor Kathryn Sova, John Dougherty - AECOM, Health & Safety Katie Davis, Anne Dyroff, Derek Knowles, Unitas Todd, Jenelle Gomes, Ray Baranowski - AECOM, Field and Technical Support Jeff Parks - AECOM, Statisticians 2.0 Schedule Ongoing support through December 2018. 3.0 Assumptions Defined in scope and additional work will require additional funding. This work will be conducted in accordance with the terms and conditions of the Master Services Agreement (MA-00433-17, PO # LBIO-66959) between the Chemours Company FC, LLC and AECOM Technical Services (effective January 1, 2017, expires December 31, 2019), any applicable Chambers Works Site Special Conditions, Chambers Works Site Security requirements, and area-specific requirements of the Chambers Works operating areas. All field activities will be conducted in accordance with appropriate Chemours Health and Safety requirements which will include Chambers Works work permits, development of project-specific Health & Safety Plans or procedures, daily safety tailgate meetings, and routine field safety audits. 4.0 Objectives The objective of the AECOM involvement as part of this project is to support the Chemours Chambers Works groundwater compliance activities. 5.0 Project Summary Estimate Description Chemours Costs Chemours Subcontractor Costs AECOM Labor AECOM Subcontractor Costs AECOM Other Direct Costs AECOM - ADQM Allocation Total Detail Code 862200 772000 721000 721001 721002 Previously Authorized (if applicable) $ $ $ $ $ $ - Dollars Requested $ $ $ $ $ 149,595 196,896 36,050 11,031 $ 393,572 New Authorization Amount $ $ 149,595 $ 196,896 $ 36,050 $ 11,031 $ $ 393,572 AECOM Attachment A Detailed Costs $196,895.59 Grand Total Filename: 60xxxxx_CW Groundwater Compliance 2018A.xlsx Sheet: Summary Labor $9,588.72 $109,964.19 $66,141.12 $11,201.56 Task Total Task 18001: PM - H&S Task 18002: Reporting Task 18003: Monitoring Task 18004: Statistics $11,031.30 ODCs $370.80 $206.00 $10,454.50 $0.00 $149,595.00 $0.00 $0.00 $149,595.00 $0.00 $0.00 $0.00 $36,050.00 $0.00 $36,050.00 Chemours Contractor Costs AECOM Contractor Costs CW - Groundwater Compliance 2018 $393,571.89 Total $9,959.52 $110,170.19 $262,240.62 $11,201.56 Page 1 of 5 Task Total Labor ODCs Total Expense Description Communications Group Total ODCs Labor Employee Description Technician 5 Project Scientist (Sci IV) Clerk 4 Clerk 4 Administrator 5 Task 18001: PM - H&S Employee Name Dougherty, John F McGee, Thomas P (Tom) Wallace, Linda M Baldwin, Betty A Dugosh, Joey W Group Total January Hours Dollars 2 177.86 8 588.96 8 426.64 4 252.92 4 326.68 26 1,773.06 9,588.72 370.80 9,959.52 January Raw Amount Quantity Dollars 30.00 1 30.90 1 30.90 Rate 88.93 73.62 53.33 63.23 81.67 February Quantity Dollars 1 30.90 1 30.90 February Hours Dollars 2 177.86 8 588.96 4 213.32 0 0.00 4 326.68 18 1,306.82 March Quantity Dollars 1.00 30.90 1 30.90 March Hours Dollars 0 0.00 4 294.48 4 213.32 0 0.00 0 0.00 8 507.80 April Quantity Dollars 1 30.90 1 30.90 April Hours Dollars 0 0.00 4 294.48 4 213.32 0 0.00 0 0.00 8 507.80 May Dollars 0.00 294.48 213.32 0.00 0.00 507.80 May Quantity Dollars 1 30.90 1 30.90 Hours 0 4 4 0 0 8 June Quantity Dollars 1 30.90 1 30.90 June Hours Dollars 0 0.00 8 588.96 4 213.32 0 0.00 0 0.00 12 802.28 August Hours Dollars 0 0.00 4 294.48 4 213.32 4 252.92 0 0.00 12 760.72 July August Quantity Dollars Quantity Dollars 1 30.90 1 30.90 1 30.90 1 30.90 July Hours Dollars 0 0.00 4 294.48 4 213.32 0 0.00 0 0.00 8 507.80 CW - Groundwater Compliance 2018 September Quantity Dollars 1 30.90 1 30.90 September Hours Dollars 0 0.00 8 588.96 4 213.32 0 0.00 0 0.00 12 802.28 October Quantity Dollars 1 30.90 1 30.90 October Hours Dollars 0 0.00 8 588.96 4 213.32 0 0.00 0 0.00 12 802.28 November Quantity Dollars 1 30.90 1 30.90 November Hours Dollars 0 0.00 8 588.96 4 213.32 0 0.00 0 0.00 12 802.28 December Quantity Dollars 1 30.90 1 30.90 December Hours Dollars 0 0.00 4 294.48 4 213.32 0 0.00 0 0.00 8 507.80 Total ODCs 370.80 370.80 Total Loaded $ 355.72 5,300.64 2,773.16 505.84 653.36 9,588.72 Page 2 of 5 Total Quantity 12 12 Total Hours 4 72 52 8 8 144 Labor ODCs Total Task Total Expense Description Fed Ex Group Total Report Shipping ODCs Labor Employee Description Scientist (Sci II) Graduate Scientist (Sci I) Project Scientist (Sci IV) Principal Scientist (Sci VI) Principal Scientist (Sci VI) Clerk 4 Principal Scientist (Sci VI) Administrator 5 Technician 3 Project Scientist (Sci IV) Task 18002: Reporting Employee Name Davis, Kathryn E Gomes, Jenelle McGee, Thomas P (Tom) Morgan, Scott A Norcross, Scott W Wallace, Linda M Aucoin, Michael D (Mike) Hunt, Maria P Layton, Matthew K (Matt) Wallace, Christine D Group Total January Hours Dollars 40 2,241.60 10 384.40 40 2,944.80 0 0.00 0 0.00 16 853.28 10 1,142.70 0 0.00 20 1,167.40 0 0.00 136 8,734.18 109,964.19 206.00 110,170.19 January Raw Amount Quantity Dollars 100.00 0.00 0 0.00 Rate 56.04 38.44 73.62 108.47 108.10 53.33 114.27 86.17 58.37 85.87 February Quantity Dollars 0.00 0 0.00 February Hours Dollars 50 2,802.00 10 384.40 50 3,681.00 15 1,627.05 10 1,081.00 16 853.28 10 1,142.70 0 0.00 40 2,334.80 16 1,373.92 217 15,280.15 March Quantity Dollars 0.00 0 0.00 March Hours Dollars 50 2,802.00 0 0.00 40 2,944.80 10 1,084.70 0 0.00 16 853.28 0.00 10 861.70 60 3,502.20 0 0.00 186 12,048.68 April Quantity Dollars 1 103.00 1 103.00 April Hours Dollars 40 2,241.60 0 0.00 40 2,944.80 0 0.00 0 0.00 10 533.30 0.00 20 1,723.40 0 0.00 0 0.00 110 7,443.10 May Quantity Dollars 0.00 0 0.00 May Dollars 2,241.60 768.80 1,472.40 0.00 0.00 266.65 0.00 0 0.00 0 0.00 0 0.00 85 4,749.45 Hours 40 20 20 0 0 5 June Quantity Dollars 0.00 0 0.00 June Hours Dollars 40 2,241.60 0 0.00 20 1,472.40 0 0.00 0 0.00 5 266.65 0.00 0 0.00 0 0.00 0 0.00 65 3,980.65 July Quantity Dollars 0.00 0 0.00 July Dollars 3,362.40 0.00 1,472.40 0.00 0.00 533.30 0.00 0 0.00 0 0.00 0 0.00 90 5,368.10 Hours 60 0 20 0 0 10 CW - Groundwater Compliance 2018 August Quantity Dollars 0.00 0 0.00 August Hours Dollars 60 3,362.40 40 1,537.60 20 1,472.40 0 0.00 0 0.00 10 533.30 10 1,142.70 0 0.00 40 2,334.80 0 0.00 180 10,383.20 September Quantity Dollars 0.00 0 0.00 September Hours Dollars 50 2,802.00 50 1,922.00 50 3,681.00 15 1,627.05 10 1,081.00 16 853.28 10 1,142.70 10 861.70 40 2,334.80 16 1,373.92 267 17,679.45 October Quantity Dollars 1 103.00 1 103.00 October Hours Dollars 50 2,802.00 10 384.40 40 2,944.80 10 1,084.70 0 0.00 16 853.28 0 0.00 20 1,723.40 60 3,502.20 0 0.00 206 13,294.78 November Quantity Dollars 0.00 0 0.00 November Hours Dollars 40 2,241.60 20 768.80 20 1,472.40 0 0.00 0 0.00 10 533.30 0 0.00 0 0.00 0 0.00 0 0.00 90 5,016.10 December Quantity Dollars 0.00 0 0.00 December Hours Dollars 40 2,241.60 0 0.00 40 2,944.80 0 0.00 0 0.00 15 799.95 0 0.00 0 0.00 0 0.00 0 0.00 95 5,986.35 Total ODCs 206.00 206.00 Total Loaded $ 31,382.40 6,150.40 29,448.00 5,423.50 2,162.00 7,732.85 4,570.80 5,170.20 15,176.20 2,747.84 109,964.19 Page 3 of 5 Total Quantity 2 2 Total Hours 560 160 400 50 20 145 40 60 260 32 1,727 Task 18003: Monitoring 1H18 2H18 1H18 1H18/ 2H18 1H18/ 2H18 Chemours Contractor Costs Mowing/ Clearing Well Repairs AECOM Contractor Costs Gemplers/ VWR Pine ODCs Labor Employee Description Field Technician 6 Scientist (Sci II) Graduate Scientist (Sci I) Graduate Scientist (Sci I) Technician 2 Technician 4 Project Scientist (Sci IV) Field Technician 4 Field Technician 4 Technician 3 Task Total Labor ODCs AECOM Contractor Costs Chemours Contractor Costs Total Expense Description Eurofins/ TA Eurofins/ TA E Aquifer Salem Canal T29 Group Total Expense Description WJV SGS Group Total Expense Description Supplies Equipment Rental Group Total Employee Name Baranowski, Raymond T Davis, Kathryn E Dyroff, Anne P Gomes, Jenelle Knowles, Derek R Layman, Donald (Don) McGee, Thomas P (Tom) Mead, Simon J Phillips, Donald R (Donnie) Todd, Unitas S Group Total January Hours Dollars 0.00 20 1,120.80 120 4,495.20 120 4,612.80 16 672.48 0.00 20 1,472.40 0 0.00 0 0.00 4 203.80 300 12,577.48 66,141.12 10,454.50 36,050.00 149,595.00 262,240.62 March Hours Dollars 6 636.24 20 1,120.80 16 599.36 20 768.80 6 252.18 6 428.34 15 1,104.30 6 412.08 6 345.90 6 305.70 107 5,973.70 February Quantity Dollars 0.00 0.00 0 0.00 April Quantity Dollars 1 360.50 0.00 1 360.50 April Hours Dollars 0.00 20 1,120.80 20 749.20 20 768.80 0.00 0.00 10 736.20 0 0.00 0 0.00 0 0.00 70 3,375.00 March Quantity Dollars 0.00 0.00 0.00 0.00 0.00 0 0.00 April Quantity Dollars 0.00 0.00 0.00 0.00 0.00 0 0.00 March April Quantity Dollars Quantity Dollars 2 12,360.00 0.00 0.00 0.00 2 12,360.00 0 0.00 February March Quantity Dollars Quantity Dollars 1 360.50 1.00 360.50 1 875.50 0.00 2 1,236.00 1 360.50 February Hours Dollars 0.00 0.00 65 2,434.90 65 2,498.60 0.00 0.00 20 1,472.40 0 0.00 0 0.00 0 0.00 150 6,405.90 January February Amount Quantity Dollars Quantity Dollars 45,000.00 1 45,000.00 0.00 73,000.00 0.00 0.00 13,255.00 0.00 0.00 6,670.00 1 6,670.00 0.00 2,500.00 1 2,500.00 0.00 3 54,170.00 0 0.00 January Raw Amount Quantity Dollars 6,000.00 0.00 2,500.00 0.00 0 0.00 January Raw Amount Quantity Dollars 350.00 2 721.00 850.00 2 1,751.00 4 2,472.00 Rate 106.04 56.04 37.46 38.44 42.03 71.39 73.62 68.68 57.65 50.95 May Dollars 0.00 1,120.80 749.20 768.80 0.00 0.00 736.20 0.00 0.00 0.00 3,375.00 July Dollars 0.00 40 2,241.60 120 4,495.20 120 4,612.80 16 672.48 0.00 10 736.20 0 0.00 0 0.00 4 203.80 310 12,962.08 Hours September Hours Dollars 6 636.24 20 1,120.80 6 224.76 6 230.64 6 252.18 6 428.34 16 1,177.92 6 412.08 6 345.90 6 305.70 84 5,134.56 August Quantity Dollars 0.00 0.00 0 0.00 October Quantity Dollars 1 360.50 0.00 1 360.50 October Hours Dollars 0.00 20 1,120.80 10 374.60 10 384.40 0.00 0.00 0 0.00 0 0.00 0 0.00 0 0.00 40 1,879.80 November Quantity Dollars 1 360.50 0.00 1 360.50 November Hours Dollars 0.00 20 1,120.80 10 374.60 10 384.40 0.00 0.00 10 736.20 0 0.00 0 0.00 0 0.00 50 2,616.00 December Quantity Dollars 0.00 0.00 0 0.00 December Hours Dollars 0.00 20 1,120.80 10 374.60 10 384.40 0.00 0.00 10 736.20 0 0.00 0 0.00 0 0.00 50 2,616.00 September Quantity Dollars 0.00 0.00 0.00 0.00 0.00 0 0.00 October Quantity Dollars 0.00 0.00 0.00 0.00 0.00 0 0.00 November Quantity Dollars 0.00 0.00 0.00 0.00 0.00 0 0.00 December Quantity Dollars 0.00 0.00 0.00 0.00 0.00 0 0.00 September October November December Quantity Dollars Quantity Dollars Quantity Dollars Quantity Dollars 2 12,360.00 0.00 0.00 0.00 0.00 1 2,575.00 1 2,575.00 0.00 2 12,360.00 1 2,575.00 1 2,575.00 0 0.00 August September Quantity Dollars Quantity Dollars 1 360.50 1 360.50 2 1,751.00 1 875.50 3 2,111.50 2 1,236.00 August Hours Dollars 0.00 10 560.40 60 2,247.60 60 2,306.40 0.00 0.00 10 736.20 0 0.00 0 0.00 0 0.00 140 5,850.60 July August Quantity Dollars Quantity Dollars 0.00 0.00 1 73,000.00 0.00 0.00 0.00 1 6,670.00 0.00 1 2,500.00 0.00 3 82,170.00 0 0.00 June July Quantity Dollars Quantity Dollars 1 6,180.00 0.00 0.00 0.00 1 6,180.00 0 0.00 June July Quantity Dollars Quantity Dollars 1 360.50 1 360.50 1 875.50 0.00 2 1,236.00 1 360.50 June Hours Dollars 0.00 20 1,120.80 20 749.20 20 768.80 0.00 0.00 10 736.20 0 0.00 0 0.00 0 0.00 70 3,375.00 May June Quantity Dollars Quantity Dollars 0.00 0.00 0.00 0.00 1 13,255.00 0.00 0.00 0.00 0.00 0.00 1 13,255.00 0 0.00 May Quantity Dollars 0.00 0.00 0 0.00 May Quantity Dollars 1 360.50 0.00 1 360.50 10 0 0 0 70 20 20 20 Hours CW - Groundwater Compliance 2018 Total Quantity 1 1 1 2 2 7 Total Quantity 5 2 7 Total Quantity 12 7 19 Total Hours 12 230 477 481 44 12 141 12 12 20 1,441 Page 4 of 5 Total Chemours Contractor 45,000.00 73,000.00 13,255.00 13,340.00 5,000.00 149,595.00 Total AECOM Contractor 30,900.00 5,150.00 36,050.00 Total ODCs 4,326.00 6,128.50 10,454.50 Total Loaded $ 1,272.48 12,889.20 17,868.42 18,489.64 1,849.32 856.68 10,380.42 824.16 691.80 1,019.00 66,141.12 Task Total Labor Employee Description Administrator 5 Project Scientist (Sci IV) Project Scientist (Sci IV) Filename: 60xxxxx_CW Groundwater Compliance 2018A.xlsx Sheet: 18004 Labor Total Employee Name Hunt, Maria P Park, Jeffrey J McGee, Thomas P (Tom) Group Total Task 18004: Statistics 11,201.56 11,201.56 Rate 86.17 94.43 73.62 January Hours Dollars 0.00 16 1,510.88 16 1,177.92 32 2,688.80 February Hours Dollars 16 1,378.72 16 1,510.88 8 588.96 40 3,478.56 August Hours Dollars 0.00 10 944.30 16 1,177.92 26 2,122.22 CW - Groundwater Compliance 2018 September Hours Dollars 16 1,378.72 10 944.30 8 588.96 34 2,911.98 Total Hours 32 52 48 132 Total Loaded $ 2,757.44 4,910.36 3,533.76 11,201.56 Page 5 of 5 Attachment 15 RCRA Corrective Measures Study = $537,000 Notes: This estimate covers development of Corrective Measures Studies for source areas to be initiated after the RCRA Facility Investigation is completed as recommended in the 2014 RFI report (currently in agency review). It includes an evaluation of corrective measures at SWMU 39-1, SWMU 45-2, and site-wide measures to address impacted groundwater and DNAPL source areas beneath AOCs 1 through 11. This assumes that long term operation the IWS, continued groundwater monitoring, and DNAPL source recovery are major components of the final corrective measure. The estimate for this work assumes a 2018 cost of $250,000; $50,000 in 2019; and $275,000 in 2020, but is subject to modification based on agency comment on the associated work plans. Costs after 2018 are based on net present value using a 7% discount rate. Attachment 16 Post Closure Care of RCRA SWMUs 21, 25, 26, 28 = $257,000 Notes: Financially assured via Bond. This estimate includes annual groundwater quality sampling and reporting of four wells as required by the post closure plan for four RCRA SWMUs in accordance with NJPDES-DGW Permit No. NJ0083429. These SWMUs include: SWMU 21 – Thermal Decon Furnace and Storage Areas SWMU 25 – Lead Flue Dust & Lead Slag Storage Area SWMU 26 – Freon Spent Catalyst Storage Area (clean closed) SWMU 28 – Telomer A Waste Container Storage Area Attachment 17 Post Closure Care of RCRA SWMUs 15 and 16 (A & B Basins) = $333,000 Notes: Financially assured via Bond. This estimate includes semi-annual groundwater quality sampling and reporting of seven wells as required by the post closure plan for RCRA SWMUs 15 and 16 (A and B Basins) in accordance with NJPDES-DGW Permit No. NJ0083429. Attachment 18 RCRA Closure and Post Closure of Operating Units (Landfill C and Chem Waste Pad) = $9,381,769 Notes: Future closure and post closure of RCRA operating units (Landfill C and Chem Waste Pad) are currently financially assured via an existing bond in the amount of $9,381,769. Attachment 19 Future Closure and Post Closure of Sanitary Landfills (A&B) = $13,212,000 Notes: Future closure and post closure of Sanitary Landfills A&B are currently financially assured on an existing letter of credit in the amount of $13,212,000. Attachment 20 Off-Site PFAS potable well investigation and treatment system O&M = $8,962,000 Notes: This estimate includes off-site sampling of residential potable wells and selected off-site monitor wells, installation of treatment systems or connection to public water supply, and O&M of installed treatment systems for an indeterminent timeframe. This cost assumes $675,000 per year from 2018 to 2047 to cover a period of 30 years. Costs after 2018 are based on net present value using a 7% discount rate. \ Memorandum AECOM Sabre Building, Suite 300 4051 Ogletown Rd. Newark, DE 19713 www.aecom.com To Andrew Hartten Subject 2018 Chambers Works – Residential OM&M Project Authorization From Mark Houlday Date December 8, 2017 302 781 5900 302 781 5901 tel fax Chemours #:509026 AECOM #: TBD Background and Scope of Work This Project Authorization (Authorization) is needed to fund the ongoing and expanded activities that are being conducted near the Chambers Works Plant. The activities being conducted include: performing quarterly sampling for per- and polyfluoroalkyl substances (PFAS) constituents, changing out private residential granular activated carbon (GAC) tanks as required, sampling new residential drinking water wells, overseeing the installation of new GAC systems or connection of residences to public water, data reduction and reporting, and attending meetings. The investigation area is expanding and work activities planned for 2018 are expected to increase. This Authorization will fund the following tasks for 2018: • • • • • • Task 18001 - Conducting Planning and Project Meetings Task 18002 - Performing Routine Quarterly Sampling and Analysis Task 18003 - Conducting New Surveying and Sampling Task 18004 - Installing New GAC Systems and Connecting Residences to Public Water Task 18005 - Reducing Data and Preparing Deliverables Task 18010 - Performing Project Management Activities A description of these tasks is presented here. Task 18001 – Conducting Planning and Project Meetings Both internal (AECOM) and external (Integrated Project Team) meetings and conference calls will continue to be held frequently as the project continues to evolve. Meetings between the regulatory agencies, Chemours, and AECOM are ongoing. It is anticipated that several more meetings will be required to complete the planned work. Routine meetings will continue to be held at selected milestones throughout the project. Meetings and conference calls will continue to be held frequently (approximately every 1-2 weeks). Planning activities are also included in this task. 18002 – Performing Routine Quarterly Sampling and Analysis 54 residential GAC systems will continue to be sampled quarterly for three PFAS analytes. It is assumed that 35 new systems will installed and added to the quarterly sampling program. QA/QC samples will also be collected during the sampling effort. This activity will fund AECOM labor and expenses, laboratory analysis, and limited third party validation. Task 18003 – Conducting New Surveying and Sampling The field team continues to survey the residences within the expanded search area. When new private wells are identified and the residents agree to sampling, the field team manages the schedule and performs the required sampling. This task includes planning and coordinating with ADQM. Task 18004 – Installing New GAC Systems or Connecting Residences to Public Water New GAC systems continue to be installed at private residences requiring treatment after the agreements are executed. Some residences will be connected to public water, whre possible, and two public water connections are assumed to take place. This task will fund installation of new GAC systems and the Page 2 connection of residences to public water. We are anticipating that Envirosafe will do the work and AECOM will oversee the installations and the connection to public water. Task 18005 – Reducing Data and Preparing Deliverables All data reduction and reporting activities are included in this task. Reporting activities include preparing notification letters to residents indicating that they may be qualified for sampling and letter reports to the residents and the agencies summarizing the sampling results. It also includes preparing summary spreadsheets, figures and quarterly reports. No other deliverables are anticipated during this phase of work. Task 18010 - Performing Project Management Activities This task includes developing scopes of work, managing staff, developing and tracking budgets and schedules, communicating project status with Chemours project team, etc. Conference calls are conducted weekly with Chemours to discuss this project. Project Team Roles and Responsibilities The main team members for this work include: Andrew Hartten – Chemours Project Director Katherine Davis – AECOM Lead Scientist Shannon Murphy – AECOM Scientist Michael Aucoin - AECOM Project Chemist Tom McGee – AECOM Environmental Scientist Cheryl Duffy – AECOM GIS Support Mark Houlday – AECOM Project Manager Bjorn Cuento – AECOM Project Engineer Maria Hunt – AECOM Document Editor Linda Wallace – AECOM Project Support Fran McGrear – AECOM Project Support Schedule OM&M activities for this project are ongoing. Several drinking water wells are anticipated to be sampled in 2018. Conference calls (both internal and with the agencies) continue. Installation of GAC systems and connection to public water is underway. It is anticipated that this phase of work (non-OM&M) will be continue throughout 2018. Cost The cost of completing this phase of work is estimated at $675,085. Detailed costs are presented in Attachment A. Routine OM&M costs are estimated at $260,789. The remaining costs ($414,296) will the new surveying and installations, data reduction and reporting, meetings and project management. A breakdown of these costs is as follows: Task Total Task 18001/ Conduct Planning and Project Meetings Task 18002/ Perform Routine Sampling and Analysis Task 18003/ Conduct New Surveying and Sampling AECOM Labor/ODCs AECOM Contractor Costs Chemours Contractor Costs Chemours Costs $12,817 $0.0 $0.0 $0.0 $12,817 $75,929 $12,360 $0.0 $0.0 $88,289 $37,137 $0.00 $172,500 $0.0 $209,637 Total Page 3 Task Total Task 18004/ Install New GAC Systems, Connect to Public Water Task 18005/ Reduce Data, Prepare Reports Task 18010/ Project Management AECOM Labor/ODCs AECOM Contractor Costs Chemours Contractor Costs Chemours Costs $21,340 $209,605 $60,000 $0.0 $290,945 $63,772 $0.0 $0.0 $0.0 $63,772 $9624 $0.0 $0.0 $0.0 $9624 Total Assumptions The work that will be performed for this project is evolving. The work will be based on current results and sampling investigations that are planned (but not yet conducted). As new data become available, new work may be required. This new work will be funded via change orders For this Project Authorization, the makes the following assumptions: • • • • • • • • The field effort required to conduct the new surveying and non-routine sampling work is anticipated to require a limited effort. The AECOM field effort is not anticipated to exceed $37,000. For the 54 systems already installed, analytical costs for the are estimated at $100,000. These costs assume that each system will be sampled quarterly. These costs include QA/QC samples and third party validation. It is anticipated that 35 new systems will be installed and that two connections to public water will be made. Each new installation/connection is estimated at $5,500 ($203,500). Annual analytical costs for new GAC system sampling are estimated at $90,000. This assumes that each new GAC system will be sampled quarterly. Costs for QA/QC samples and third party validation are included here. The laboratory will provide results according to a standard turnaround time schedule. No premiums are assumed for rush analysis. Bottled water costs will average about $1000/month. No costs for legal support are included in this change order. Only the work described in this change order will be performed. Increases in scope (further expansion of the residential sampling, installation of new GAC systems, etc.), if needed, will be funded by a separate change order. Project Summary Estimate Description Detail Code Previously Authorized (if applicable) $ Dollars Requested Chemours Costs 862200 Chemours Subcontractor Costs 772000 $ $ ADQM 842000 $ $ AECOM Labor 721000 $ $ AECOM Other Direct Costs 721001 $ AECOM Subcontractor Costs 721001 Total $ $ - $ 232,550 New Authorization Amount $ $ 232,550 $ - 216,912 $ 216,912 3,708 $ 3,708 $ 221,915 $ 221,915 $ 675,085 $ 675,085 - AECOM Attachment A Detailed Costs $216,912.72 Grand Total Filename: 2018 Chambers Works Offsite OM&M mhf.xlsx Sheet: Summary Labor $12,817.20 $75,929.04 $33,429.60 $21,340.80 $63,772.08 $9,624.00 Task Total Task 18001 - Planning and Project Meetings Task 18002 - Routine Quarterly Sampling Task 18003 - Surveying, Sampling, Lab Analysis Task 18004 - Install New GAC Task 18005 - Reduce Data and Prepare Reports Task 18010 - Project Management $3,708.00 ODCs $0.00 $0.00 $3,708.00 $0.00 $0.00 $0.00 $221,965.00 $232,500.00 $0.00 $0.00 Chemours AECOM Contractor Chemours ADQM Contractor Costs Costs Costs Allocation $0.00 $0.00 $0.00 $0.00 $12,360.00 $0.00 $0.00 $0.00 $0.00 $172,500.00 $0.00 $0.00 $209,605.00 $60,000.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 2018 Chemours Chambers Works Offsite OM&M Project - 509026 Page 1 of 1 $675,085.72 Total $12,817.20 $88,289.04 $209,637.60 $290,945.80 $63,772.08 $9,624.00