Luminant Matt Goering Asset Closure Luminant 6555 Si erra Drive Irving, TX 75039 214.812.4600 m 214.812.4600 0 U.S. Army Corps of Engineers Louisvil le District Indianapolis Regulatory Office 8902 Otis Avenue, Suite S106B Indianapolis, IN 46216 ATIN: (b) (6) June 28, 2018 RE: Middle Fork Vermilion River Erosion Mitigation and Streambank Stabilization Vermilion Site; Oakwood, Illinois Section 404 and 401 Joint Permit Application (b) (6) , Pleased fi nd enclosed our section 404 and 401 joint permit application, for a proposed, 1,900 linear feet streambank stabiliza tion proj ect located along the right descending bank of the Middle Fork Vermilion (MFV) River. Luminant is requesting a meeting with your office, to further review our design approach. Please contact Mr. Phil Morris, a member of ou r Corporate Environmental team, with any quest io ns or concerns at phil.morris@vistraenergy.com or (618) 343-7794. Sincerely, Dynegy Midwest Generation, LLC Matt Goering Vice President - Asset Closure Enclosures 605: Df"V: IRVl:'-IG EX.\S 7503? o 214 IERG'f.COM cc United States Department of Interior National Park Service Midwest Region 601 Riverfront Drive Omaha, Nebraska 68102-4226 ATIN: Mr. Hector Santiago Illinois Department of Natural Resources Planning Division One Natural Resources Way Springfield, Illinois 62702-1271 ATIN : Mr. Louis Yockey Illinois Environmental Protection Agency Bureau of Water Division of Water Pollution Control Facility Evaluation Unit 1021 Nort h grand Avenue East Spri ngfield, Illinois 62794-9276 SCI ENGINEERING, INC. 650 Pierce Boulevard O’Fallon, Illinois 62269 618-624-6969 www.sciengineering.com Project Summary and Section 404/401 Joint Permit Application MIDDLE FORK VERMILION RIVER EROSION MITIGATION AND STREAMBANK STABILIZATION VERMILION SITE OAKWOOD, ILLINOIS June 2018 Prepared for: DYNEGY MIDWEST GENERATION, LLC SCI No. 2017-3081.31 SCI ENGINEERING, INC. EARTH • SCIENCE • SOLUTIONS GEOTECHNICAL ENVIRONMENTAL NATURAL RESOURCES CULTURAL RESOURCES CONSTRUCTION SERVICES June 14, 2018 Mr. Phil Morris Dynegy Midwest Generation, LLC 1500 Eastport Plaza Drive Collinsville, Illinois 62234 RE: Project Summary and Section 404/401 Joint Permit Application Middle Fork Vermilion River Erosion Mitigation and Streambank Stabilization – Vermilion Site Oakwood, Illinois SCI No. 2017-3081.31 Dear Mr. Morris: SCI Engineering, Inc. (SCI) has prepared the following Project Summary and Section 404/401 Joint Permit Application for a proposed project located at the Dynegy Midwest Generation, LLC Vermilion Site along a portion of the Middle Fork Vermilion (MFV) River. The enclosed information is intended to provide the U.S. Army Corps of Engineers (USACE), the Illinois Environmental Protection Agency (IEPA), and the Illinois Department of Natural Resources (IDNR) the documentation typically needed to initiate the Section 404/401 application process. A combination of stone toe protection, embedded toe boulders, void-filled riprap, and live branch layering is being proposed to stabilize a segment of the riverbank on the project site. The project will stabilize an area below the ordinary high-water mark that is approximately 1,900 linear feet (LF) along the right descending bank of the MFV River. This report and the attached Section 404/401 Joint Permit Application Form should be submitted to the USACE, IEPA, and IDNR to initiate the permitting process. The attached report should be read in its entirety. We appreciate the opportunity to provide you with our natural resource services. If you have any questions, or if we can be of further assistance, please do not hesitate to call. Respectfully, SCI ENGINEERING, INC. Scott E. Billings Project Scientist Michael R. Hartoin Vice President SEB/MRH/tlw Enclosure N:\OFallon\emtapps\PROJECT FILES\!2017 PROJECTS\2017-3081 Vermilion River Stabilization\NR\31 - IP\Stream Stabilization Rpt 6-2018\Rev Rpt per DMG - 6-2018\2017-3081.31 Streambank Stabilization Report.docx 650 Pierce Boulevard, O’Fallon, Illinois 62269 ■ 618-624-6969 www.sciengineering.com TABLE OF CONTENTS 1.0 INTRODUCTION.......................................................................................................................... 1 2.0 PROJECT DESCRIPTION .......................................................................................................... 1 3.0 EROSION MITIGATION AND STABILIZATION PLAN ...................................................... 2 4.0 EROSION CONTROL PLAN ...................................................................................................... 2 5.0 THREATENED AND ENDANGERED SPECIES ..................................................................... 2 7.0 SUMMARY .................................................................................................................................... 4 8.0 LIMITATIONS .............................................................................................................................. 4 FIGURES Figure 1 – Vicinity and Topographic Map Figure 2 – National Wetland Inventory Map Figure 3 – Impact Assessment and Aerial Photograph APPENDICES Appendix A – Photographic Summary Appendix B – Middle Fork Vermilion River – Erosion Mitigation and Riverbank Stabilization Drawings (Stantec) Appendix C – Joint Permit Application Form Appendix D – Bat Habitat Assessment Report Appendix E – Information for Planning and Consultation (IPaC) Report Appendix F – Ecological Compliance and Assessment Tool (EcoCAT) Report Appendix G – Middle Fork Vermilion River – Erosion Mitigation and Riverbank Stabilization Planting and Maintenance Plan (Stantec) June 2018 SCI No. 2017-3081.31 Project Summary and Section 404/401 Joint Permit Application MIDDLE FORK VERMILION RIVER EROSION MITIGATION AND STREAMBANK STABILIZATION VERMILION SITE OAKWOOD, ILLINOIS 1.0 INTRODUCTION As part of the Section 404/401 permitting process, Dynegy Midwest Generation, LLC (Dynegy) is submitting a Section 404/401 Joint Permit Application to the U.S. Army Corps of Engineers (USACE), Illinois Environmental Protection Agency (IEPA), and the Illinois Department of Natural Resources (IDNR). The permit application is being prepared for a proposed streambank stabilization project located along a stretch of the Middle Fork Vermilion (MFV) River. The project will stabilize approximately 1,900 linear feet (LF) of the riverbank. This portion of the MFV River is experiencing erosion along the right descending bank within the northern portion of the Vermilion Site, located near Oakwood, Illinois. Bank stabilization within this section of the river is important to mitigate the erosion and lateral migration of the MFV River. Stantec, Inc. has prepared a stream stabilization plan that includes the utilization of stone toe protection, embedded toe boulders, void-filled riprap, and live branch layering (Appendix B). This report includes the plan prepared by Stantec, as well as a summary of the proposed direct disturbance to areas below the ordinary high-water mark (OHWM) along this stretch of the MFV River. 2.0 PROJECT DESCRIPTION The project area is located along the MFV River near Oakwood, Illinois (T20N, R12W, Section 21). The 1,900-foot-long project area is located within a 17.1-mile stretch of the MFV River that is listed as a nationally-designated scenic river that falls under the regulations of the National Wild and Scenic River Act. Bank stabilization is being proposed to mitigate river migration and must be determined allowable under the criteria of the National Wild and Scenic Rivers Act (Public Law 90-542). Under Public Law 90-542, no water resource project can be implemented within the designated area that will have any adverse impact on the scenic, geologic, fish and wildlife, ecological, recreational or historic resources of the river system. SCI Engineering, Inc. Dynegy Midwest Generation, LLC 3.0 MFV River – Vermilion Site SCI No. 2017-3081.31 EROSION MITIGATION AND STABILIZATION PLAN On April 27, 2017, representatives from Dynegy, Stantec, and SCI Engineering, Inc. (SCI) performed a field exploration of the subject site to assess current conditions and discuss the concept of streambank stabilization. Following the meeting, Stantec developed a stabilization plan that includes a combination of stone toe protection, embedded toe boulders, void-filled riprap, and live branch layering along approximately 1,900 LF of the right descending bank of the MFV River. As part of the project, the existing gabion baskets along the river edge within the central portion of the 1,900 LF disturbance area will be removed. A photographic summary of the representative site conditions is included as Appendix A. The proposed plan is included on the drawings completed by Stantec titled Middle Fork Vermilion River – Erosion Mitigation and Riverbank Stabilization, dated May 2018 (Appendix B). Based on the plans developed by Stantec, the proposed project will feature stabilization along the rightdescending bank of the MFV River. Approximately 1,900 LF of the right-descending bank of the MFV River has been identified for streambank stabilization, including the use of stone toe protection, embedded toe boulders, void-filled riprap, live branch layering, and removal of exiting gabion baskets. Based on calculations provided by Stantec, the result is approximately 2,130 cubic yards of stone toe protection boulders and approximately 20,240 cubic yards of void-filled riprap to be placed below the OHWM of the MFV River. More details on the specific quantities and locations of riprap fill and grading for construction access can be found on the site drawings completed by Stantec (Appendix B). In addition, the details of the proposed planting and maintenance as part of the project can be found in the Middle Fork Vermilion River – Erosion Mitigation and Riverbank Stabilization Planting and Maintenance Plan prepared by Stantec, and included as Appendix G. 4.0 EROSION CONTROL PLAN The project will be conducted under the guidance of IEPA National Pollutant Discharge Elimination System (NPDES) permit requirements. An erosion control plan and subsequent Best Management Practice’s (BMP’s) will be submitted and approved by the IEPA prior to project construction. 5.0 THREATENED AND ENDANGERED SPECIES Various available resources were consulted to determine the listed threatened and endangered species that may be present within the vicinity of the project area. The United States Fish and Wildlife Service (USFWS) Information, Planning and Conservation (IPaC) tool was utilized on June 4, 2018 to obtain a species list for the project to be used in project planning. Additionally, a list was obtained from IDNR by utilizing the Ecological Compliance Assessment Tool (EcoCAT). Both the IPaC and EcoCAT reports provide a list of the threatened and endangered species or their critical habitat that may exist within the June 2018 Page 2 of 4 SCI Engineering, Inc. Dynegy Midwest Generation, LLC MFV River – Vermilion Site SCI No. 2017-3081.31 vicinity of the area for project planning, however they are not a substitute for detailed site surveys or field surveys required for environmental assessments. Both the USFWS IPaC document and the IEPA EcoCAT report should be read in their entirety and are enclosed as Attachments E and F, respectively. According to information compiled by the USFWS IPaC report, there are six federally threatened and/or endangered species that have the potential to occur within the site boundaries and/or may be affected by the proposed project. These species include: Indiana bat (Myotis sodalis), northern long-eared bat (Myotis septentrionalis), clubshell mussel (Pleurobema clava), rabbitsfoot mussel (Quadrula cylindrica cylindrica), Eastern prairie fringed orchid (Platanthera leucophaea), and Mead’s milkweed (Asclepias meadii). In addition, certain birds are protected under the Migratory Bird Treaty Act, as well as the Bald and Golden Eagle Protection Act. Based on the results of the IPaC report, 12 bird species or particular concern were identified because they occur on the USFWS Birds of Conservation Concern list or warrant special attention within the project location. The birds of concern are identified on the IPaC report and attached as Appendix E. Additionally, the IDNR EcoCAT report lists eight state-listed threatened and/or endangered species that have the potential to occur within the vicinity of the project area. Most listed species are aquatic mussels, and include the clubshell (Pleurobema clava), little spectaclecase (Villosa lienosa), Northern riffleshell (Epioblasma torulosa rangiana), purple wartyback (Cyclonaias tuberculata), salamander mussel (Simpsonaias ambigua), and wavy-rayed lampmussel (Lampsilis fasciola). Additionally, one fish species (blue breast darter, Etheostoma camurum), one plant species (fibrous-rooted sedge, Carex communis), and six Illinois Natural Area Inventory (INAI) Sites and conservation areas were listed within the vicinity of the project boundaries. As stated in the attached USFWS and IDNR correspondence, further discussions and coordination with the USFWS and/or IDNR will likely be required to determine if the listed species will potentially be affected by the project actions. SCI previously performed a field exploration of the project site to determine if suitable summer roosting habitat for the federally-listed endangered Indiana bat (Myotis sodalis) and the threatened northern longeared bat (Myotis septentrionalis) exists within the project boundaries. A team of SCI scientists, led by a Federally-licensed bat biologist, performed the bat habitat assessment along the right descending bank of the MFV River within the limits of the proposed stabilization area on March 5, 2018. The area surveyed during the field exploration extended beyond the proposed construction limits as detailed on the attached Figure 3. The survey area was determined to have low suitability as Indiana and northern long-eared bat June 2018 Page 3 of 4 SCI Engineering, Inc. Dynegy Midwest Generation, LLC MFV River – Vermilion Site SCI No. 2017-3081.31 summer roosting habitat, as only two suitable snag trees were identified in the northern portion of the site. No additional potential roost trees were identified in the central and southern areas of the site. Our findings are provided in the Bat Habitat Assessment Report, included as Appendix D. 7.0 SUMMARY Dynegy will stabilize and protect approximately 1,900 LF of the right descending bank of the MFV River to reduce and mitigate the potential effects of erosion. As the stabilization area becomes established following construction, the stone toe protection and live branch layering are intended to restore the eroding bank to a stable condition. Based on the proposed impacts to a water of the United States, the project will require a Section 404 Permit from the USACE, Section 401 Water Quality Certification from IEPA, and may require general wetland permits or further authorization from IDNR. The Joint Permit Application Form is included as Appendix C for submittal to the USACE, IEPA, and IDNR. 8.0 LIMITATIONS This report has been prepared for the exclusive use of Dynegy, the USACE, IEPA, and IDNR. SCI is not responsible for independent conclusions or recommendations made by others. SCI is not responsible for surveys, calculations, or plans that were prepared by others. The anticipated impacts to the MFV River as presented in this report are based on the information and drawings prepared and provided by Stantec, dated May 2018 and attached as Appendix B. Any variation from this plan may require additional submittals to the regulatory agencies. June 2018 Page 4 of 4 SITE NOT TO SCALE SITE 0 SCALE PROJECT NAME VERMILION SITE OAKWOOD, ILLINOIS VICINITY AND TOPOGRAPHIC MAP DRAWN BY CHECKED BY RCV DATE JOB NUMBER SEB 06/2018 2017-3081.31 GENERAL NOTES/LEGEND USGS TOPOGRAPHIC MAP COLLISION, ILLINOIS QUADRANGLE DATED 1968 DANVILLE NW, ILLINOIS QUADRANGLE DATED 1978 10' CONTOURS STREET MAP HTTP://GOTO.ARCGISONLINE.COM/MAPS/WORLD_STREET_MAP 1,000 2,000 1 " = 2,000 ' ® FIGURE 1 R5UBH PFO1A R4SBC R5UBH R5UBH R4SBC R5UBH R4SBC PFO1C PUB/ABHh R4SBC PFO1/EM1Ch PSS1A PFO/SS1Ch L1UBHh PFO1C R5UBH PUBHh R4SBC R4SBC R4SBC PFO1A PFO1A PUBGx R4SBC PFO1C R5UBH R4SBC PUBHx R4SBC PFO1C PFO1C PUBHh R4SBC PFO1C R2UBH PFO1C PEM1A PUBHh PUBHh PEM1Af PEM1A R4SBC PFO1C PEM1Af PUBGx PFO1C R4SBC PUBHh R4SBC R4SBC SITE L1UBHh PEM1/USA R5UBH R4SBC R2USA PUBGx PUBGx R2USA R5UBH PFO1C PUBGx R2UBH PFO1A PFO1C PFO1A PFO1A PEM1Fh R4SBC R4SBC R2UBH L1ABHh L1UBHh R4SBC PUBGh R4SBC PUBHx PUBGh R4SBC L1UBHx PUBHx PUBHx PUBHx PUBHx PUBHx PUBHx PUBHx PUBF PUBHx R5UBH PUBHx R4SBC PUBHh R4SBC 0 1,000 2,000 PUBGx PUBGx PUBHx GENERAL NOTES/LEGEND PROJECT NAME VERMILION SITE OAKWOOD, ILLINOIS NATIONAL WETLAND INVENTORY DATA OBTAINED FROM www.fws.gov. NATIONAL WETLANDS INVENTORY DRAWN BY CHECKED BY RCV DATE JOB NUMBER SEB 06/2018 2017-3081.31 USGS TOPOGRAPHIC MAP COLLISION, ILLINOIS QUADRANGLE DATED 1968 DANVILLE NW, ILLINOIS QUADRANGLE DATED 1978 PUBGx SCALE PUBGx PUBGx 1 " = 2,000 ' ¬ FIGURE 2 INDICATES PHOTO LOCATION, DESIGNATION AND ORIENTATION (SEE APPENDIX A) INDICATES CONSTRUCTION LIMITS # Ð f f INDICATES PROPOSED ACCESS ROAD f 6 # Ð7 # Ð8 100 200 # Ð f 1 " = 150 ' IMPACT ASSESSMENT & AERIAL PHOTOGRAPH GENERAL NOTES/LEGEND PROJECT NAME INDICATES GABION BASKETS (TBR) 5 f R I V E R V E R M I L I O N f INDICATES RIVER IMPACT AREA 2 VERMILION RIVER 1900 LF OR 1.44 AC IMPACT f 4 0 SCALE VERMILION SITE OAKWOOD, ILLINOIS 3 SEB RCV 06/2018 FIGURE CHECKED BY DRAWN BY DATE 2017-3081.31 JOB NUMBER ® Ð AERIAL PHOTOGRAPH OBTAINED FROM ARCGIS ONLINE, WORLD IMAGERY DATED 2/06/2016 AND UAV PHOTOS, DATED 7/05/2017. 1 3 f Ð # # f Ð # # Ð # Ð Middle Fork Vermilion River Erosion Mitigation and Streambank Stabilization – Vermilion Site Appendix A Right descending bank of MFV River Photo 1. Upstream portion of the project area along the right descending river bank, facing downstream southwest (4-26-17) Middle Fork Vermilion River Erosion Mitigation and Streambank Stabilization – Vermilion Site Appendix A Right descending bank of MFV River Photo 2. Northern portion of the project area. Project location will be along the right descending bank, facing downstream southwest (4-26-17) Middle Fork Vermilion River Erosion Mitigation and Streambank Stabilization – Vermilion Site Appendix A Right descending bank of MFV River Photo 3. Photo taken from right descending bank of the river showing the central portion of the project site, facing downstream south (4-26-17) Middle Fork Vermilion River Erosion Mitigation and Streambank Stabilization – Vermilion Site Appendix A Right descending bank of MFV River Existing gabion baskets Photo 4. Photo along the right descending bank of the river showing the existing gabion baskets, facing downstream south (4-26-17) Middle Fork Vermilion River Erosion Mitigation and Streambank Stabilization – Vermilion Site Appendix A Right descending bank of MFV River Photo 5. Photo along right descending bank of the river near existing gabion area, facing upstream north (4-26-17) Middle Fork Vermilion River Erosion Mitigation and Streambank Stabilization – Vermilion Site Appendix A Right descending bank of MFV River Existing gabion baskets Photo 6. Central portion of the project area along the right descending bank of the river. Photo taken near bend in the river and near existing gabion area, facing downstream southeast (4-26-17) Middle Fork Vermilion River Erosion Mitigation and Streambank Stabilization – Vermilion Site Appendix A Right descending bank of MFV River Photo 7. View of the southern portion of the project area from the right descending river bank, facing downstream east (4-26-17) Middle Fork Vermilion River Erosion Mitigation and Streambank Stabilization – Vermilion Site Appendix A Right descending bank of MFV River Photo 8. Southern portion of the project area facing downstream. Photo taken from the right descending river bank, facing east (4-26-17) El "'c c :_! 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INCHES 146 14.3 62 10 7 197 15.8 115 13.2 292 18.0 197 15.8 608 23 343 19 984 27 400 20 Dis D3o Dso D9o Dioo 15' DETAIL - CONSTRUCTION A SCALE: 1/2"= 1'-0" CCESS AND FUTURE MAINTENANCE ROAD DRAWING REFERENCE KEY 11111 H 11111111111111 z --' u --' 0 UJ z UJ c.:: :( {'.) !ii 3:: uQ e >tc: 0UJ UO Permit-Seal DRAFT - NOT FOR CONSTRUCTION SEAL PLACEHOLDER Chkd. 57154c-501-dl1.dwa 15 of 15 YY.MM.Di) Project Number: 175657154 Dw"n. BFS File Name: 0 Drawing No. 15 Revision Sheet JOINT APPLICATION FORM FOR ILLINOIS ITEMS 1 AND 2 FOR AGENCY USE 1. Application Number 2. Date Received 3. and 4. (SEE SPECIAL INSTRUCTIONS\ NAME, MAILING ADDRESS AND TELEPHONE NUMBERS 4. Authorized Agent (an agent is not required): 3a. Applicant's Name: 3b. Owner Name (if needed or if different from applicant): Phil Morris Company Name (if any) : Dynegy Midwest Generation, LLC Company Name (if any): Company Name (if any): Address: Address: Address: Email Address: Email Address: 1500 Eastport Plaza Drive Collinsville, Illinois 62234 Email Address: phil.morris@vistraenergy.com Applicant's Phone Nos. w/area code Applicant's Phone Nos. w/area code Agent's Phone Nos. w/area code Business: 618-343-7794 Business: Business: Residence: Residence: Residence: Cell: Cell: Cell: Fax: Fax: Fax: STATEMENT OF AUTHORJZA TION to act in my behalf as my agent in the processing of this application and to furnish, upon I hereby authorize, request, supplemental information in support of this permit application. Anr licant's Signature Date 5. ADJOINING PROPERTY OWNERS (Upstream and Downstream of the water body and within Visual Reach of Project) Mailing Address Phone No. w/area code Name a. IDNR, Wayne Rosenthal One Natural Resources Way, Springfield, IL 62702 217 782-6302 b. Kenneth Divan 9370E 2100N Road, Oakwood, IL 61858 217 354-4446 c. Tom Fletcher 9287E 2085N Road, Oakwood, IL 61858 217 354-4000 d. John Sandusky 9878E 2150N Road, Danville, IL 61834 217 776-2746 6. PROJECT TITLE: Middle Fork Vermilion River Erosion Mitigation and Streambank Stabilization - Vermilion Site 7. PROJECT LOCATION: UT Ms LATITUDE: ON 40.18307 ow LONGITUDE: _87.74537 STREET, ROAD, OR OTHER DESCRIPTIVE LOCATION Vermilion Site, 10188 E 2150N 0 IN OR 181 NEAR CITY OF TOWN (check appropriate box) Northing: Easting: LEGAL DESCRIPT QUARTER SECTION TOWNSHIP NO. RANGE SE 20 20N 12W WATERWAY RIVER MILE (if applicable) Municipality Name Middle Fork Vermilion River Oakwood COUNTY STATE ZIP CODE Vermilion IL 61858 Revised 2010 Corps of Engineers D D IL Dep't of Natural Resources D IL Environmental Protection Agency D Applicant's Copy 8. PROJECT DESCRIPTION (Include all features): The proposed project is for approximately 1,900 linear feet (LF) of river bank stabilization along the right descending bank of the Middle Fork Vermilion (MFV) River at Dynegy Midwest Generation, LLC's (Dynegy) Vermilion Site. In an effort to prevent erosional issues along this stretch of the river, Dynegy is proposing to lay back the embankm ents and construct an access bench at the toe of the embankment to provide construction access. The stabilization methods will include a combination of stone toe protection, embedded toe boulders, void-filled rip rap, and live branch layering. In addition, the existing gabion baskets along th e river edge within the project area will be removed as part of the project. A detailed description of the proposed site plan is included in the plans completed by Stantec titled: Middle Fork Vermilion River Erosion Mitigation and Riverbank Stabilization, dated May 2018 (see attached report). 9. PURPOSE AND NEED OF The purpose of the project is to protect the eroding streambank from the continued lateral migration of the stretch of the MFV River as noted in the project description. COMPLETE THE FOLLOWING FOUR BLOCKS IF DREDGED AN D/OR FILL MATERIA L IS TO BE DISCHARGED 10. REASON(S) FOR DISCHARGE: Install ation of void-filled rip rap, embedded boulders , and live branch layering to facilitate the construction of the proposed stone toe protection along a reach of the MFV River. 11. TYPE(S} OF MATERIAL BEING DISCHARGED AND THE AMOUNT OF EACH TYPE IN CUBIC YARDS FOR WATERWAYS: TYPE: rip rap (various gradation), boulders (minimum of 24 inches) AMOUNT IN CUBIC YARDS: Stone Toe Protection Boulders - 2, 130 CY I Void-Filled Rip Rap - 20,240 CY 12. SURFACE AREA IN ACRES OF WETLANDS OR OTHER WATERS FILLED (See Instructions} 1,900 LF or 1.44 acres 13. DESCRIPTION OF AVOIDANCE, MINIMIZATION AND COMPENSATION (See Instructions} Several design alternatives were considered to provide an engineering plan that meets the purpose and need of the project. The combined embedded boulders, live brush layering, and stone toe protection plan is the preferred project plan to provide the necessary bank stabilization. 14. Date activity is proposed to commence Date activity Is expected to be complE!ted Fall 2018 LJ Summer 2019 x 15. Is any portion of the activity for which authorization is NOTE: If answer Is "YES" give reasons In the Project Yes No sought now complete? Description and Remarks section. Indicate the existing work on drawings. Month and Year the activity was N/A completed 16. List all approvals or certiflcation and denials received from other Federal, Interstate, state, or local agencies for structures, construction, discharges or other activities described In this application. Issuing Agenc:i T:il:!!il Qf A12LJrQVSJI Date of A12!llicatioo ld2ot1flcation No. Dale of A12!lrovsil Date of Denial x 17. CONSENT TO ENTER PROPERTY LISTED IN PART 7 ABOVE IS HEREBY GRANTED. No I Yes 16. APPLICATION VERIFICATION (SEE SPECIAL INSTRUCTIONS) Applicalion is hereby made for the activities described herein. I certify that I am familiar with the information contained in the application, and that to the best of my knowledge and belief, such information Is true, complete, and accurate. I further certify that I possess the authority to undertake the proposed activities. ----- D "S 2&>-IF - Signature of Applicant or Authorized Agent Date Signature of Applicant or Authorized Agent Date Signature of Applicant or Authorized Agent Date Corps of Engineers Revised 2010 D IL Dep't of Natural Resources 0 IL Environmental Protection Agency SEE INSTRUCTIONS FOR ADDRESS 0 Applicant's Copy SCI ENGINEERING, INC. EARTH • SCIENCE • SOLUTIONS GEOTECHNICAL ENVIRONMENTAL NATURAL RESOURCES CULTURAL RESOURCES CONSTRUCTION SERVICES March 15, 2018 Mr. Vic Modeer, P.E., D.GE Dynegy Midwest Generation, LLC 1500 Eastport Plaza Drive Collinsville, Illinois 62234 RE: Bat Habitat Assessment Middle Fork Vermilion River Erosion Mitigation and Streambank Stabilization – Vermilion Site Oakwood, Illinois SCI No. 2017-3081.3B Task 200 Dear Mr. Modeer: SCI Engineering, Inc. (SCI) performed a bat habitat assessment at the above referenced site. Our scope of work included performing a site reconnaissance to determine if suitable summer roosting habitat for the federally-listed endangered Indiana bat (Myotis sodalis) and the threatened northern long-eared bat (Myotis septentrionalis) exists within the proposed project boundaries. SCI understands that Dynegy is requesting permitting services for the submittal of a Section 404/401 permit application to the U.S. Army Corps of Engineers (USACE) and the Illinois Environmental Protection Agency (IEPA) for stabilization work on approximately 1,900 linear feet along the Middle Fork Vermilion (MFV) River. It is our understanding that Stantec, Inc. is currently preparing a stream stabilization plan for the project. However, a final design plan has not been determined at this time. As such, an approximate acreage of woodland that may need to be felled during project activities is currently not available. BAT HABITAT ASSESSMENT SUMMARY On February 27, 2018, a team of SCI Scientists, led by a Federally-licensed bat biologists, performed a field exploration of the project site in an effort to identify potentially suitable Indiana bat and northern long-eared bat summer roosting habitat, as defined in the U.S. Fish and Wildlife Service (USFWS) Range-wide Indiana Bat Summer Survey Guidelines, dated May 2017. Some of the necessary habitat characteristics include live and/or dead snag trees ≥3 inches in diameter at breast height (DBH) that have sloughing bark, cracks, crevices, and/or hollows. The Indiana Bat Habitat Assessment Datasheets of the Range-wide Guidelines, provided as Appendix 1, were completed at four representative locations within the survey area. The location of these sample sites can be found on the Bat Habitat Assessment and Aerial Photograph, enclosed as Figure 2. Surrounding Area The surrounding area consists of forested areas fragmented by agricultural fields, the Dynegy Vermilion facility to the south, the MFV River to the east, and a large lake to the southwest of the project area. There are sparse residential developments within 3 miles, but the area is primarily developed for 650 Pierce Boulevard, O’Fallon, Illinois 62269 ■ 618-624-6969 www.sciengineering.com Mr. Vic Modeer, P.E., D.GE Dynegy Midwest Generation, LLC 2 March 15, 2018 SCI No. 2017-3081.3B agricultural purposes. Within a 10-mile radius, the project area is within proximity of two conservation areas and State parks. The project site is approximately 2.5 miles north of Middle Fork Woods Nature Preserve and approximately 3 miles north of Kickapoo State Recreation Area. On-Site Habitat Assessment Sample Site 1 occurs in the northernmost portion of the site near an existing pump station. The wooded area contains a densely vegetated understory, midstory and moderately vegetated canopy. Dominant mature tree species in the site include black walnut (Juglans nigra), American elm (Ulmus americana), honey locust (Gleditsia triacanthos), American sycamore (Platanus occidentalis), eastern red cedar (Juniperus virginiana), and black cherry (Prunus serotina). Two snags were documented along the forested hillside in the northern portion of the site. These trees contain sloughing bark, crevices, and/or cracks that are suitable for roosting Indiana and northern long-eared bats. The remaining trees within the site contain smooth bark that are not suitable for summer roosting bats. As such, Sample Site 1 has low suitability as summer roosting habitat for Indiana and northern long-eared bats. Sample Site 2 occurs within the northern portion of the site and southwest of Sample Site 1. The wooded area contains a densely vegetated understory, midstory and moderately vegetated canopy. Dominant mature tree species in the site include American elm, eastern cottonwood (Populus deltoides), silver maple (Acer saccharinum), honey locust, and American sycamore. No snags or live trees that contain sloughing bark, crevices, and/or cracks that are suitable for roosting Indiana and northern long-eared bats were identified within Sample Site 2. As such, Sample Site 2 is not suitable as summer roosting habitat for Indiana and northern long-eared bats. Sample Site 3 occurs in the southern forested portion of the site and southeast of Sample Site 2. The wooded area contains a sparsely vegetated understory, midstory and canopy. Dominant mature tree species in the site include eastern red cedar, American basswood (Tilia americana), white poplar (Populus alba), and American sycamore. No snags or live trees that contain sloughing bark, crevices, and/or cracks that are suitable for roosting Indiana and northern long-eared bats were identified within Sample Site 3. As such, Sample Site 3 is not suitable as summer roosting habitat for Indiana and northern long-eared bats. Sample Site 4 occurs in the southern forested portion of the site and southeast of Sample Site 3. The site contains a sparse stand of young trees. The wooded corridor contains an open understory, midstory and moderately vegetated canopy. Dominant mature tree species in the site include American sycamore and box elder (Acer negundo). No snags or live trees that contain sloughing bark, crevices, and/or cracks that are suitable for roosting Indiana and northern long-eared bats were identified within Sample Site 4. The remaining trees within the site contain smooth bark that are not suitable for summer roosting bats. As such, Sample Site 4 is not suitable as summer roosting habitat for Indiana and northern longeared bats. In summary, based on the site characteristics and surrounding land use, the project site has low suitability as Indiana and northern long-eared bat summer roosting habitat. The only suitable habitat (low suitability) present occurs within Sample Site 1. The remaining sites (Sample Site 2 through 4) are not suitable as roosting habitat. Based on the surrounding landscape, the site may be used as a travel and foraging corridor for bats, as the forested corridor is part of a larger contiguous woodland corridor that runs north to south and and connects with other large woodlands. Mr. Vic Modeer, P.E., D.GE Dynegy Midwest Generation, LLC 3 March 15, 2018 SCI No. 2017-3081.3B Project sites containing suitable bat habitat have the potential to result in a USFWS “may affect” determination and will likely require additional consultation with the USFWS if impacts to suitable habitat are proposed. The USFWS may request a presence/probable absence survey to determine if threatened and endangered species are present within the project area and/or will be affected by project activities. Please note that the official USFWS mandated summer survey season for Indiana and northern long-eared bats is May 15 to August 15. SCI is providing our professional opinion regarding the suitability of habitat for the Indiana and northern long-eared bats, as defined in the USFWS Range-wide Indiana Bat Summer Survey Guidelines, dated May 2017. Please keep in mind that the USFWS has the sole authority to determine which areas are classified as suitable habitat. Additionally, the USFWS has the authority to regulate any action which may affect a listed threatened or endangered species. If desired, SCI is available to submit this assessment to the USFWS for their review. If you have any questions regarding this assessment or need additional information, please contact me at (618) 206-3038 or sbillings@sciengineering.com. Respectfully, SCI ENGINEERING, INC. Vona Kuczynska Staff Scientist Scott E. Billings Project Scientist VK/SEB/tlw Enclosures Figure 1 – Vicinity and Topographic Map Figure 2 – Bat Habitat Assessment and Aerial Photograph Appendix 1 – Indiana Bat Habitat Assessment Datasheets Appendix 2 – Photographic Summary \\scieng\shared\OFallon\emtapps\PROJECT FILES\!2017 PROJECTS\2017-3081 Vermilion River Stabilization\NR\3B\BHA Report\2017-3081.3B BHA Vermillion River Stabilization.docx SITE NOT TO SCALE SITE 0 SCALE PROJECT NAME VERMILION SITE OAKWOOD, ILLINOIS VICINITY AND TOPOGRAPHIC MAP DRAWN BY CHECKED BY RCV VK DATE JOB NUMBER 03/2018 2017-3081.3B GENERAL NOTES/LEGEND USGS TOPOGRAPHIC MAP COLLISON, ILLINOIS QUADRANGLE DATED 1968 DANVILLE NW, ILLINOIS QUADRANGLE DATED 1978 10' CONTOURS STREET MAP HTTP://GOTO.ARCGISONLINE.COM/MAPS/WORLD_STREET_MAP 1,000 2,000 1 " = 2,000 ' ® FIGURE 1 f # Ð 1 # * SAMPLE SITE 1 ! ( f 2 Ð # 3 Ð f # APPROXIMATE PROJECT AREA SAMPLE SITE 2 ! ( Ð f 4 # Ð f 5 # Ð f 6 # SAMPLE SITE 3 ! ( SAMPLE SITE 4 ! ( f # * LOCATION OF TWO SUITABLE SNAGS ! ( APPROXIMATE LOCATION OF SAMPLE SITES # f Ð # Ð 7 INDICATES PHOTO LOCATION, DESIGNATION AND ORIENTATION (SEE APPENDIX A) AERIAL PHOTOGRAPH OBTAINED FROM ARCGIS ONLINE, WORLD IMAGERY DATED 2/06/2016 AND UAV PHOTOS, DATED 7/05/2017. 0 SCALE PROJECT NAME VERMILION SITE OAKWOOD, ILLINOIS DRAWN BY CHECKED BY BAT HABITAT ASSESSMENT & AERIAL PHOTOGRAPH DATE JOB NUMBER BDG 03/2018 2017-3081.3B VK GENERAL NOTES/LEGEND 100 200 1 " = 200 ' ¬ FIGURE 2 Appendix 1 INDIANA AND NORTHERN LONG‐EARED BAT HABITAT ASSESSMENT FORM Project Name Vermilion Site ‐ Stabilization Survey Date 2/27/2018 Township/Range/Section Oakwood, Illinois Latitude/Longitude Project No. 2017.3081.3B  40.183527°, ‐87.745912° Surveyor Vona Kuczynska Project Description: SCI understands that Dynegy is planning to submit a Section 404/401 permit application to the U.S. Army Corps of Engineers and the  Illinois Environmental Protection Agency for stabilization work on approximately 1,900 linear feet along the Middle Fork Vermilion  (MFV) River at the Vermilion site, located near Oakwood, Illinois.   Project Area Forested Acres % of Site % w/in 1 mile Total Acres 1,900 LF Completely Cleared 80% 50% Open Acres (non‐forested or developed) % of Site % Site w/in 1 mile 20% Proposed Project Tree Removal (acres) Partially Cleared (will leave trees) N/A 60%    Reserved (no clearing) N/A N/A Landscape Within 3 Mile Radius Corridors to other forested areas? The trees on site are part of a contiguous riparian corridor that is adjacent to the MFV River.  Describe Adjacent Property (e.g. forest, grassland, commercial, residential development, water resources). The surrounding area consist of  forested areas fragmented by agricultural fields, the MFV River to the east, and a large  lake to the southwest of the project area. There are sparse residential developments within 3 miles, but the area is  primarily developed for agricultural purposes. Proximity to Public Land Within 10 miles What is the distance (miles) from the project area to public lands?  (i.e. national  and state parks, conservation areas, local parks). Use the distance between the boundaries of the site and the public land.  Location Kickapoo State Recreation Area Middle Fork Woods Nature Preserve Distance (miles) less than 0.5 less than 0.5 Site Name Vermillion River Stabilization Sample Point 1 Visit Date 2/27/18 General Description Sample Site 1 occurs in the northern portion of the project site. The area contains mostly young trees less than 8  inches in diameter at breast height. There are two suitable snags present on the border of the site. Otherwise the  site does not contain suitable trees. Water Resources At Sample Site Ephemeral Intermittent Nr. & Length N/A N/A Wetlands Permanent Perennial Approx.  Acreage 1 ‐ MFV River Number and Size of Ponds/Pools Seasonal N/A N/A Open and Accessible to Bats?    Yes                              No N/A Describe Existing Condition of Water Resources: The MFV River is adjacent to the site and contains fast flowing water.  Dominant Species of Mature Trees Black walnut, American elm, honey locust, black willow, American sycamore, eastern red cedar, black cherry. % Closure/Density of Vegetation Understory Midstory Canopy 3 3 2 1 = 1‐10% 4 = 41‐60% 2 = 11‐20% 5 = 61‐80%  Size Composition of Trees Medium Small 90 10 3 = 21‐40% 6 = 81‐100% Small (4‐8) Large 0 Medium (8‐15)    Large (>15) Preferred Tree Species ≥ 9 DBH Tree Species N/A N/A N/A N/A N/A N/A Relative Abundance (%) N/A N/A N/A N/A N/A N/A N/A N/A N/A X No N/A N/A N/A % with > 30 %  Exfoliating Bark % Dominance = The relative density of the tree species within the sample plot % of trees of this species in the sample plot containing exfoliating bark Number of Suitable Snag Trees  2 Includes standing dead trees with sloughing bark, crevices, or holes.  Is site suitable for Indiana bats? (check) *Level may not be applicable Level? For northern long‐eated bats? (check) *Level may not be applicable Level? Notes Yes L Yes L (L = Low, M = Moderate, H = High) X No (L = Low, M = Moderate, H = High) Site Name Vermillion River Stabilization Sample Point 2 Visit Date 2/27/18 General Description Sample Point 2 occurs in the northern portion of the forested corridor and south of Sample Site 1. Water Resources At Sample Site Ephemeral Intermittent Number & Length N/A N/A Wetlands Permanent Seasonal Perennial Approx.  Acreage 1 ‐ MFV River Number and Size of Ponds/Pools N/A N/A Open and Accessible to Bats?    Yes                              No None Describe Existing Condition of Water Resources: The MFV River is adjacent to the site and contains fast flowing water.  Dominant Species of Mature Trees American sycamore, eastern cottonwood, silver maple, honey locust.  % Closure/Density of Vegetation Understory Midstory Canopy 3 3 2 1 = 1‐10% 4 = 41‐60% 2 = 11‐20% 5 = 61‐80%  Size Composition of Trees Medium Small 90 10 3 = 21‐40% 6 = 81‐100% Small (4‐8) Large 0 Medium (8‐15)    Large (>15) Preferred Tree Species ≥ 9 DBH Tree Species N/A N/A N/A N/A N/A N/A Relative Abundance (%) N/A N/A N/A N/A N/A N/A N/A N/A N/A No X N/A N/A N/A % with > 30 %  Exfoliating Bark % Dominance = The relative density of the tree species within the sample plot % of trees of this species in the sample plot containing exfoliating bark 0 Number of Suitable Snag Trees  Includes standing dead trees with sloughing bark, crevices, or holes.  Is site suitable for Indiana bats? (check) *Level may not be applicable Level? For northern long‐eated bats? (check) *Level may not be applicable Level? Notes Yes (L = Low, M = Moderate, H = High) Yes No (L = Low, M = Moderate, H = High) X Site Name Vermillion River Stabilization Sample Point 3 Visit Date 2/27/18 General Description Sample Point 3 occurs along the southern boundary of the clearing limits and northwest of Sample Point 2.   Water Resources At Sample Site Ephemeral Intermittent Number & Length N/A N/A Wetlands Permanent Perennial Approx.  Acreage 1 ‐ MFV River Number and Size of Ponds/Pools Seasonal N/A N/A Open and Accessible to Bats?    Yes                              No N/A Describe Existing Condition of Water Resources: The MFV River is adjacent to the site and contains fast flowing water.  Dominant Species of Mature Trees Eastern red cedar, American basswood, white poplar, American sycamore. % Closure/Density of Vegetation Understory Midstory Canopy 1 1 1 1 = 1‐10% 4 = 41‐60% 2 = 11‐20% 5 = 61‐80%  Size Composition of Trees Medium Small 50 50 3 = 21‐40% 6 = 81‐100% Large 0 Small (4‐8)  (8‐15)    Large (>15) Preferred Tree Species ≥ 9 DBH Tree Species N/A N/A N/A N/A N/A N/A Relative Abundance (%) N/A N/A N/A N/A N/A N/A N/A N/A N/A No X N/A N/A N/A % with > 30 %  Exfoliating Bark % Dominance = The relative density of the tree species within the sample plot % of trees of this species in the sample plot containing exfoliating bark Number of Suitable Snag Trees  0 Includes standing dead trees with sloughing bark, crevices, or holes.  Is site suitable for Indiana bats? (check) *Level may not be applicable Level? For northern long‐eated bats? (check) *Level may not be applicable Level? Notes Yes (L = Low, M = Moderate, H = High) Yes No (L = Low, M = Moderate, H = High) X Site Name Vermillion River Stabilization Sample Point 4 Visit Date 2/27/18 General Description Sample Site 4 occurs in the southern forested corridor and southeast of Sample Site 3. The site contains a sparse  stand of young trees that are not suitable as bat habitat.  Water Resources At Sample Site Ephemeral Intermittent Number & Length N/A N/A Wetlands Permanent Perennial Approx.  Acreage 1 ‐ MFV River Number and Size of Ponds/Pools Seasonal N/A N/A Open and Accessible to Bats?    Yes                              No N/A Describe Existing Condition of Water Resources: The MFV River is adjacent to the site and contains fast flowing water.  Dominant Species of Mature Trees American sycamore, box elder maple, white poplar.  % Closure/Density of Vegetation Understory Midstory Canopy 1 1 1 1 = 1‐10% 4 = 41‐60% 2 = 11‐20% 5 = 61‐80%  Size Composition of Trees Small Medium 75 25 3 = 21‐40% 6 = 81‐100% Small (4‐8) Large 0 Medium (8‐15)    Large (>15) Preferred Tree Species ≥ 9 DBH Tree Species N/A N/A N/A N/A N/A N/A Relative Abundance (%) N/A N/A N/A N/A N/A N/A N/A N/A N/A No X N/A N/A N/A % with > 30 %  Exfoliating Bark % Dominance = The relative density of the tree species within the sample plot % of trees of this species in the sample plot containing exfoliating bark Number of Suitable Snag Trees  0 Includes standing dead trees with sloughing bark, crevices, or holes.  Is site suitable for Indiana bats? (check) *Level may not be applicable Level? For northern long‐eated bats? (check) *Level may not be applicable Level? Notes Yes H Yes H (L = Low, M = Moderate, H = High) No (L = Low, M = Moderate, H = High) X Appendix 2 Middle Fork Vermilion River Erosion Mitigation and Streambank Stabilization – Vermilion Site Appendix 2 Snag trees Photo 1. Photo showing the two identified snag trees within Sample Site 1, located near the northern portion of the project area. Facing east (2-27-18) Middle Fork Vermilion River Erosion Mitigation and Streambank Stabilization – Vermilion Site Appendix 2 Photo 2. Representative view of the younger trees that dominate the majority of Sample Site 1 within the northern portion of the site, facing south (2-27-18) Photo 3. Photo depicting the representative size of the existing trees within Sample Site 1, facing south (2-27-18) Middle Fork Vermilion River Erosion Mitigation and Streambank Stabilization – Vermilion Site Appendix 2 Photo 4. View of the forested area within Sample Site 2 that was found to be dominated by young trees unsuitable for bat roosting habitat, facing south (2-27-18) Photo 5. Existing conditions along the edge of the forested corridor along the right descending bank of the MFV River between Sample Site 2 and Sample Site 3, facing south (2-27-18) Middle Fork Vermilion River Erosion Mitigation and Streambank Stabilization – Vermilion Site Appendix 2 Right descending bank of MFV River Photo 6. Photo showing the relatively narrow riparian corridor along the right descending bank of the MFV river near the location of Sample Site 3, facing southeast (2-27-18) Photo 7. Forested area near the southern portion of the project site along the right descending bank of the MFV River near Sample Site 4, facing east (2-27-18) 6/4/2018 IPaC: Resources IPaC U.S. Fish & Wildlife Service IPaC resource list This report is an automatically generated list of species and other resources such as critical habitat (collectively referred to as trust resources) under the U.S. Fish and Wildlife Service's (USFWS) jurisdiction that are known or expected to be on or near the project area referenced below. The list may also include trust resources that occur outside of the project area, but that could potentially be directly or indirectly a ected by activities in the project area. However, determining the likelihood and extent of e ects a project may have on trust resources typically requires gathering additional site-speci c (e.g., vegetation/species surveys) and project-speci c (e.g., magnitude and timing of proposed activities) information. Below is a summary of the project information you provided and contact information for the USFWS o ce(s) with jurisdiction in the de ned project area. Please read the introduction to each section that follows (Endangered Species, Migratory Birds, USFWS Facilities, and NWI Wetlands) for additional information applicable to the trust resources addressed in that section. Project information NAME Vermilion Bank Stabilization Project LOCATION Vermilion County, Illinois Local o ces Illinois-Iowa Ecological Services Field O ce (309) 757-5800 (309) 757-5807 Illinois & Iowa Ecological Services Field O ce 1511 47th Ave https://ecos.fws.gov/ipac/project/URH5DSLFAFFBTELAJUPLCURUR4/resources 1/13 6/4/2018 IPaC: Resources Moline, IL 61265-7022 Southern Illinois Sub-O ce (618) 997-3344 (618) 997-8961 Marion Illinois Sub-o ce 8588 Route 148 Marion, IL 62959-5822 http://www.fws.gov/midwest/Endangered/section7/s7process/step1.html https://ecos.fws.gov/ipac/project/URH5DSLFAFFBTELAJUPLCURUR4/resources 2/13 6/4/2018 IPaC: Resources Endangered species This resource list is for informational purposes only and does not constitute an analysis of project level impacts. The primary information used to generate this list is the known or expected range of each species. Additional areas of in uence (AOI) for species are also considered. An AOI includes areas outside of the species range if the species could be indirectly a ected by activities in that area (e.g., placing a dam upstream of a sh population, even if that sh does not occur at the dam site, may indirectly impact the species by reducing or eliminating water ow downstream). Because species can move, and site conditions can change, the species on this list are not guaranteed to be found on or near the project area. To fully determine any potential e ects to species, additional site-speci c and project-speci c information is often required. Section 7 of the Endangered Species Act requires Federal agencies to "request of the Secretary information whether any species which is listed or proposed to be listed may be present in the area of such proposed action" for any project that is conducted, permitted, funded, or licensed by any Federal agency. A letter from the local o ce and a species list which ful lls this requirement can only be obtained by requesting an o cial species list from either the Regulatory Review section in IPaC (see directions below) or from the local eld o ce directly. For project evaluations that require USFWS concurrence/review, please return to the IPaC website and request an o cial species list by doing the following: 1. Log in to IPaC. 2. Go to your My Projects list. 3. Click PROJECT HOME for this project. 4. Click REQUEST SPECIES LIST. Listed species1 and their critical habitats are managed by the Ecological Services Program of the U.S. Fish and Wildlife Service (USFWS) and the sheries division of the National Oceanic and Atmospheric Administration (NOAA Fisheries2). Species and critical habitats under the sole responsibility of NOAA Fisheries are not shown on this list. Please contact NOAA Fisheries for species under their jurisdiction. 1. Species listed under the Endangered Species Act are threatened or endangered; IPaC also shows species that are candidates, or proposed, for listing. See the listing status page for more information. 2. NOAA Fisheries, also known as the National Marine Fisheries Service (NMFS), is an o ce of the National Oceanic and Atmospheric Administration within the Department of Commerce. The following species are potentially a ected by activities in this location: Mammals NAME https://ecos.fws.gov/ipac/project/URH5DSLFAFFBTELAJUPLCURUR4/resources STATUS 3/13 6/4/2018 IPaC: Resources Indiana Bat Myotis sodalis Endangered There is nal critical habitat for this species. Your location is outside the critical habitat. https://ecos.fws.gov/ecp/species/5949 Northern Long-eared Bat Myotis septentrionalis Threatened No critical habitat has been designated for this species. https://ecos.fws.gov/ecp/species/9045 Clams NAME STATUS Clubshell Pleurobema clava Endangered No critical habitat has been designated for this species. https://ecos.fws.gov/ecp/species/3789 Rabbitsfoot Quadrula cylindrica cylindrica Threatened There is nal critical habitat for this species. Your location is outside the critical habitat. https://ecos.fws.gov/ecp/species/5165 Flowering Plants NAME STATUS Eastern Prairie Fringed Orchid Platanthera leucophaea Threatened No critical habitat has been designated for this species. https://ecos.fws.gov/ecp/species/601 Mead's Milkweed Asclepias meadii Threatened No critical habitat has been designated for this species. https://ecos.fws.gov/ecp/species/8204 Critical habitats Potential e ects to critical habitat(s) in this location must be analyzed along with the endangered species themselves. THERE ARE NO CRITICAL HABITATS AT THIS LOCATION. Migratory birds Certain birds are protected under the Migratory Bird Treaty Act1 and the Bald and Golden Eagle Protection Act2. https://ecos.fws.gov/ipac/project/URH5DSLFAFFBTELAJUPLCURUR4/resources 4/13 6/4/2018 IPaC: Resources Any person or organization who plans or conducts activities that may result in impacts to migratory birds, eagles, and their habitats should follow appropriate regulations and consider implementing appropriate conservation measures, as described below. 1. The Migratory Birds Treaty Act of 1918. 2. The Bald and Golden Eagle Protection Act of 1940. Additional information can be found using the following links: Birds of Conservation Concern http://www.fws.gov/birds/management/managed-species/ birds-of-conservation-concern.php Measures for avoiding and minimizing impacts to birds http://www.fws.gov/birds/management/project-assessment-tools-and-guidance/ conservation-measures.php Nationwide conservation measures for birds http://www.fws.gov/migratorybirds/pdf/management/nationwidestandardconservationmeasures.pdf The birds listed below are birds of particular concern either because they occur on the USFWS Birds of Conservation Concern (BCC) list or warrant special attention in your project location. To learn more about the levels of concern for birds on your list and how this list is generated, see the FAQ below. This is not a list of every bird you may nd in this location, nor a guarantee that every bird on this list will be found in your project area. To see exact locations of where birders and the general public have sighted birds in and around your project area, visit the E-bird data mapping tool (Tip: enter your location, desired date range and a species on your list). For projects that occur o the Atlantic Coast, additional maps and models detailing the relative occurrence and abundance of bird species on your list are available. Links to additional information about Atlantic Coast birds, and other important information about your migratory bird list, including how to properly interpret and use your migratory bird report, can be found below. For guidance on when to schedule activities or implement avoidance and minimization measures to reduce impacts to migratory birds on your list, click on the PROBABILITY OF PRESENCE SUMMARY at the top of your list to see when these birds are most likely to be present and breeding in your project area. NAME BREEDING SEASON (IF A BREEDING SEASON IS INDICATED FOR A BIRD ON YOUR LIST, THE BIRD MAY BREED IN YOUR PROJECT AREA SOMETIME WITHIN THE TIMEFRAME SPECIFIED, WHICH IS A VERY LIBERAL ESTIMATE OF THE DATES INSIDE WHICH THE BIRD BREEDS ACROSS ITS ENTIRE RANGE. "BREEDS ELSEWHERE" INDICATES THAT THE BIRD DOES NOT LIKELY BREED IN YOUR PROJECT AREA.) https://ecos.fws.gov/ipac/project/URH5DSLFAFFBTELAJUPLCURUR4/resources 5/13 6/4/2018 IPaC: Resources American Golden-plover Pluvialis dominica Breeds elsewhere This is a Bird of Conservation Concern (BCC) throughout its range in the continental USA and Alaska. Bald Eagle Haliaeetus leucocephalus Breeds Oct 15 to Aug 31 This is not a Bird of Conservation Concern (BCC) in this area, but warrants attention because of the Eagle Act or for potential susceptibilities in o shore areas from certain types of development or activities. Bobolink Dolichonyx oryzivorus Breeds May 20 to Jul 31 This is a Bird of Conservation Concern (BCC) throughout its range in the continental USA and Alaska. Cerulean Warbler Dendroica cerulea Breeds Apr 21 to Jul 20 This is a Bird of Conservation Concern (BCC) throughout its range in the continental USA and Alaska. https://ecos.fws.gov/ecp/species/2974 Henslow's Sparrow Ammodramus henslowii Breeds May 1 to Aug 31 This is a Bird of Conservation Concern (BCC) throughout its range in the continental USA and Alaska. https://ecos.fws.gov/ecp/species/3941 Kentucky Warbler Oporornis formosus Breeds Apr 20 to Aug 20 This is a Bird of Conservation Concern (BCC) throughout its range in the continental USA and Alaska. Least Bittern Ixobrychus exilis Breeds Aug 16 to Oct 31 This is a Bird of Conservation Concern (BCC) only in particular Bird Conservation Regions (BCRs) in the continental USA https://ecos.fws.gov/ecp/species/6175 Lesser Yellowlegs Tringa avipes Breeds elsewhere This is a Bird of Conservation Concern (BCC) throughout its range in the continental USA and Alaska. https://ecos.fws.gov/ecp/species/9679 Prothonotary Warbler Protonotaria citrea Breeds Apr 1 to Jul 31 This is a Bird of Conservation Concern (BCC) throughout its range in the continental USA and Alaska. Red-headed Woodpecker Melanerpes erythrocephalus Breeds May 10 to Sep 10 This is a Bird of Conservation Concern (BCC) throughout its range in the continental USA and Alaska. https://ecos.fws.gov/ipac/project/URH5DSLFAFFBTELAJUPLCURUR4/resources 6/13 6/4/2018 IPaC: Resources Short-billed Dowitcher Limnodromus griseus Breeds elsewhere This is a Bird of Conservation Concern (BCC) throughout its range in the continental USA and Alaska. https://ecos.fws.gov/ecp/species/9480 Wood Thrush Hylocichla mustelina Breeds May 10 to Aug 31 This is a Bird of Conservation Concern (BCC) throughout its range in the continental USA and Alaska. Probability of Presence Summary The graphs below provide our best understanding of when birds of concern are most likely to be present in your project area. This information can be used to tailor and schedule your project activities to avoid or minimize impacts to birds. Please make sure you read and understand the FAQ “Proper Interpretation and Use of Your Migratory Bird Report” before using or attempting to interpret this report. Probability of Presence ( ) Each green bar represents the bird's relative probability of presence in the 10km grid cell(s) your project overlaps during a particular week of the year. (A year is represented as 12 4-week months.) A taller bar indicates a higher probability of species presence. The survey e ort (see below) can be used to establish a level of con dence in the presence score. One can have higher con dence in the presence score if the corresponding survey e ort is also high. How is the probability of presence score calculated? The calculation is done in three steps: 1. The probability of presence for each week is calculated as the number of survey events in the week where the species was detected divided by the total number of survey events for that week. For example, if in week 12 there were 20 survey events and the Spotted Towhee was found in 5 of them, the probability of presence of the Spotted Towhee in week 12 is 0.25. 2. To properly present the pattern of presence across the year, the relative probability of presence is calculated. This is the probability of presence divided by the maximum probability of presence across all weeks. For example, imagine the probability of presence in week 20 for the Spotted Towhee is 0.05, and that the probability of presence at week 12 (0.25) is the maximum of any week of the year. The relative probability of presence on week 12 is 0.25/0.25 = 1; at week 20 it is 0.05/0.25 = 0.2. 3. The relative probability of presence calculated in the previous step undergoes a statistical conversion so that all possible values fall between 0 and 10, inclusive. This is the probability of presence score. To see a bar's probability of presence score, simply hover your mouse cursor over the bar. Breeding Season ( ) Yellow bars denote a very liberal estimate of the time-frame inside which the bird breeds across its entire range. If there are no yellow bars shown for a bird, it does not breed in your project area. Survey E ort ( ) https://ecos.fws.gov/ipac/project/URH5DSLFAFFBTELAJUPLCURUR4/resources 7/13 6/4/2018 IPaC: Resources Vertical black lines superimposed on probability of presence bars indicate the number of surveys performed for that species in the 10km grid cell(s) your project area overlaps. The number of surveys is expressed as a range, for example, 33 to 64 surveys. To see a bar's survey e ort range, simply hover your mouse cursor over the bar. No Data ( ) A week is marked as having no data if there were no survey events for that week. Survey Timeframe Surveys from only the last 10 years are used in order to ensure delivery of currently relevant information. The exception to this is areas o the Atlantic coast, where bird returns are based on all years of available data, since data in these areas is currently much more sparse.  probability of presence SPECIES JAN FEB MAR APR MAY JUN  breeding season JUL AUG SEP  survey e ort OCT NOV  no data DEC American Goldenplover BCC Rangewide (CON) (This is a Bird of Conservation Concern (BCC) throughout its range in the continental USA and Alaska.) Bald Eagle Non-BCC Vulnerable (This is not a Bird of Conservation Concern (BCC) in this area, but warrants attention because of the Eagle Act or for potential susceptibilities in o shore areas from certain types of development or activities.) Bobolink BCC Rangewide (CON) (This is a Bird of Conservation Concern (BCC) throughout its range in the continental USA and Alaska.) Cerulean Warbler BCC Rangewide (CON) (This is a Bird of Conservation Concern (BCC) throughout its range in the continental USA and Alaska.) https://ecos.fws.gov/ipac/project/URH5DSLFAFFBTELAJUPLCURUR4/resources 8/13 6/4/2018 IPaC: Resources Henslow's Sparrow BCC Rangewide (CON) (This is a Bird of Conservation Concern (BCC) throughout its range in the continental USA and Alaska.) Kentucky Warbler BCC Rangewide (CON) (This is a Bird of Conservation Concern (BCC) throughout its range in the continental USA and Alaska.) Least Bittern BCC - BCR (This is a Bird of Conservation Concern (BCC) only in particular Bird Conservation Regions (BCRs) in the continental USA) Lesser Yellowlegs BCC Rangewide (CON) (This is a Bird of Conservation Concern (BCC) throughout its range in the continental USA and Alaska.) Prothonotary Warbler BCC Rangewide (CON) (This is a Bird of Conservation Concern (BCC) throughout its range in the continental USA and Alaska.) Red-headed Woodpecker BCC Rangewide (CON) (This is a Bird of Conservation Concern (BCC) throughout its range in the continental USA and Alaska.) Short-billed Dowitcher BCC Rangewide (CON) (This is a Bird of Conservation Concern (BCC) throughout its range in the continental USA and Alaska.) https://ecos.fws.gov/ipac/project/URH5DSLFAFFBTELAJUPLCURUR4/resources 9/13 6/4/2018 IPaC: Resources Wood Thrush BCC Rangewide (CON) (This is a Bird of Conservation Concern (BCC) throughout its range in the continental USA and Alaska.) Tell me more about conservation measures I can implement to avoid or minimize impacts to migratory birds. Nationwide Conservation Measures describes measures that can help avoid and minimize impacts to all birds at any location year round. Implementation of these measures is particularly important when birds are most likely to occur in the project area. When birds may be breeding in the area, identifying the locations of any active nests and avoiding their destruction is a very helpful impact minimization measure. To see when birds are most likely to occur and be breeding in your project area, view the Probability of Presence Summary. Additional measures and/or permits may be advisable depending on the type of activity you are conducting and the type of infrastructure or bird species present on your project site. What does IPaC use to generate the migratory birds potentially occurring in my speci ed location? The Migratory Bird Resource List is comprised of USFWS Birds of Conservation Concern (BCC) and other species that may warrant special attention in your project location. The migratory bird list generated for your project is derived from data provided by the Avian Knowledge Network (AKN). The AKN data is based on a growing collection of survey, banding, and citizen science datasets and is queried and ltered to return a list of those birds reported as occurring in the 10km grid cell(s) which your project intersects, and that have been identi ed as warranting special attention because they are a BCC species in that area, an eagle (Eagle Act requirements may apply), or a species that has a particular vulnerability to o shore activities or development. Again, the Migratory Bird Resource list includes only a subset of birds that may occur in your project area. It is not representative of all birds that may occur in your project area. To get a list of all birds potentially present in your project area, please visit the E-bird Explore Data Tool. What does IPaC use to generate the probability of presence graphs for the migratory birds potentially occurring in my speci ed location? The probability of presence graphs associated with your migratory bird list are based on data provided by the Avian Knowledge Network (AKN). This data is derived from a growing collection of survey, banding, and citizen science datasets . Probability of presence data is continuously being updated as new and better information becomes available. To learn more about how the probability of presence graphs are produced and how to interpret them, go the Probability of Presence Summary and then click on the "Tell me about these graphs" link. How do I know if a bird is breeding, wintering, migrating or present year-round in my project area? To see what part of a particular bird's range your project area falls within (i.e. breeding, wintering, migrating or year-round), you may refer to the following resources: The Cornell Lab of Ornithology All About Birds Bird Guide, or (if you are unsuccessful in locating the bird of interest there), the Cornell Lab of Ornithology Neotropical Birds guide. If a bird on your migratory bird species list has a breeding season associated with it, if that bird does occur in your project area, there may be nests present at some point within the timeframe speci ed. If "Breeds elsewhere" is indicated, then the bird likely does not breed in your project area. What are the levels of concern for migratory birds? https://ecos.fws.gov/ipac/project/URH5DSLFAFFBTELAJUPLCURUR4/resources 10/13 6/4/2018 IPaC: Resources Migratory birds delivered through IPaC fall into the following distinct categories of concern: 1. "BCC Rangewide" birds are Birds of Conservation Concern (BCC) that are of concern throughout their range anywhere within the USA (including Hawaii, the Paci c Islands, Puerto Rico, and the Virgin Islands); 2. "BCC - BCR" birds are BCCs that are of concern only in particular Bird Conservation Regions (BCRs) in the continental USA; and 3. "Non-BCC - Vulnerable" birds are not BCC species in your project area, but appear on your list either because of the Eagle Act requirements (for eagles) or (for non-eagles) potential susceptibilities in o shore areas from certain types of development or activities (e.g. o shore energy development or longline shing). Although it is important to try to avoid and minimize impacts to all birds, e orts should be made, in particular, to avoid and minimize impacts to the birds on this list, especially eagles and BCC species of rangewide concern. For more information on conservation measures you can implement to help avoid and minimize migratory bird impacts and requirements for eagles, please see the FAQs for these topics. Details about birds that are potentially a ected by o shore projects For additional details about the relative occurrence and abundance of both individual bird species and groups of bird species within your project area o the Atlantic Coast, please visit the Northeast Ocean Data Portal. The Portal also o ers data and information about other taxa besides birds that may be helpful to you in your project review. Alternately, you may download the bird model results les underlying the portal maps through the NOAA NCCOS Integrative Statistical Modeling and Predictive Mapping of Marine Bird Distributions and Abundance on the Atlantic Outer Continental Shelf project webpage. Bird tracking data can also provide additional details about occurrence and habitat use throughout the year, including migration. Models relying on survey data may not include this information. For additional information on marine bird tracking data, see the Diving Bird Study and the nanotag studies or contact Caleb Spiegel or Pam Loring. What if I have eagles on my list? If your project has the potential to disturb or kill eagles, you may need to obtain a permit to avoid violating the Eagle Act should such impacts occur. Proper Interpretation and Use of Your Migratory Bird Report The migratory bird list generated is not a list of all birds in your project area, only a subset of birds of priority concern. To learn more about how your list is generated, and see options for identifying what other birds may be in your project area, please see the FAQ “What does IPaC use to generate the migratory birds potentially occurring in my speci ed location”. Please be aware this report provides the “probability of presence” of birds within the 10 km grid cell(s) that overlap your project; not your exact project footprint. On the graphs provided, please also look carefully at the survey e ort (indicated by the black vertical bar) and for the existence of the “no data” indicator (a red horizontal bar). A high survey e ort is the key component. If the survey e ort is high, then the probability of presence score can be viewed as more dependable. In contrast, a low survey e ort bar or no data bar means a lack of data and, therefore, a lack of certainty about presence of the species. This list is not perfect; it is simply a starting point for identifying what birds of concern have the potential to be in your project area, when they might be there, and if they might be breeding (which means nests might be present). The list helps you know what to look for to con rm presence, and helps guide you in knowing when to implement conservation measures to avoid or minimize potential impacts from your project activities, should presence be con rmed. To learn more about conservation measures, visit the FAQ “Tell me about conservation measures I can implement to avoid or minimize impacts to migratory birds” at the bottom of your migratory bird trust resources page. Facilities https://ecos.fws.gov/ipac/project/URH5DSLFAFFBTELAJUPLCURUR4/resources 11/13 6/4/2018 IPaC: Resources Wildlife refuges and sh hatcheries REFUGE AND FISH HATCHERY INFORMATION IS NOT AVAILABLE AT THIS TIME Wetlands in the National Wetlands Inventory Impacts to NWI wetlands and other aquatic habitats may be subject to regulation under Section 404 of the Clean Water Act, or other State/Federal statutes. For more information please contact the Regulatory Program of the local U.S. Army Corps of Engineers District. Please note that the NWI data being shown may be out of date. We are currently working to update our NWI data set. We recommend you verify these results with a site visit to determine the actual extent of wetlands on site. This location overlaps the following wetlands: LAKE L1UBHh RIVERINE R2UBH R4SBC R2USA A full description for each wetland code can be found at the National Wetlands Inventory website Data limitations The Service's objective of mapping wetlands and deepwater habitats is to produce reconnaissance level information on the location, type and size of these resources. The maps are prepared from the analysis of high altitude imagery. Wetlands are identi ed based on vegetation, visible hydrology and geography. A margin of error is inherent in the use of imagery; thus, detailed on-the-ground inspection of any particular site may result in revision of the wetland boundaries or classi cation established through image analysis. The accuracy of image interpretation depends on the quality of the imagery, the experience of the image analysts, the amount and quality of the collateral data and the amount of ground truth veri cation work conducted. Metadata should be consulted to determine the date of the source imagery used and any mapping problems. Wetlands or other mapped features may have changed since the date of the imagery or eld work. There may be occasional di erences in polygon boundaries or classi cations between the information depicted on the map and the actual conditions on site. Data exclusions Certain wetland habitats are excluded from the National mapping program because of the limitations of aerial imagery as the primary data source used to detect wetlands. These habitats include seagrasses or submerged aquatic vegetation that are found in the intertidal and subtidal zones of estuaries and nearshore coastal waters. https://ecos.fws.gov/ipac/project/URH5DSLFAFFBTELAJUPLCURUR4/resources 12/13 6/4/2018 IPaC: Resources Some deepwater reef communities (coral or tuber cid worm reefs) have also been excluded from the inventory. These habitats, because of their depth, go undetected by aerial imagery. Data precautions Federal, state, and local regulatory agencies with jurisdiction over wetlands may de ne and describe wetlands in a di erent manner than that used in this inventory. There is no attempt, in either the design or products of this inventory, to de ne the limits of proprietary jurisdiction of any Federal, state, or local government or to establish the geographical scope of the regulatory programs of government agencies. Persons intending to engage in activities involving modi cations within or adjacent to wetland areas should seek the advice of appropriate federal, state, or local agencies concerning speci ed agency regulatory programs and proprietary jurisdictions that may a ect such activities. https://ecos.fws.gov/ipac/project/URH5DSLFAFFBTELAJUPLCURUR4/resources 13/13 Applicant: SCI Engineering, Inc Project: Address: IDNR Project Number: 1811584 Contact: Scott E. Billings 06/04/2018 Address: 650 Pierce Boulevard O'Fallon, IL 62269 Date: Vermilion River Bank Stabilization East 2150 North Road, Oakwood Description: The project is proposing stabilization work on approximately 2,000 linear feet (LF) along the Middle Fork Vermilion (MFV) River from the old East Ash Pond (OEAP) to the North Ash Pond (NAP) system at the Vermilion Power site. This portion of the MFV River is experiencing erosion along the right descending bank within the eastern portion of the power station. Natural Resource Review Results This project was submitted for information only. It is not a consultation under Part 1075. The Illinois Natural Heritage Database shows the following protected resources may be in the vicinity of the project location: Kennekuk Cove County Park INAI Site Middle Fork Of The Vermilion River INAI Site Orchid Hill INAI Site Vermilion040 INAI Site Kickapoo Hill Prairie Land And Water Reserve Orchid Hill Natural Heritage Landmark Bluebreast Darter (Etheostoma camurum) Bluebreast Darter (Etheostoma camurum) Clubshell (Pleurobema clava) Fibrous-Rooted Sedge (Carex communis) Little Spectaclecase (Villosa lienosa) Northern Riffleshell (Epioblasma torulosa rangiana) Purple Wartyback (Cyclonaias tuberculata) Salamander Mussel (Simpsonaias ambigua) Wavy-Rayed Lampmussel (Lampsilis fasciola) Wavy-Rayed Lampmussel (Lampsilis fasciola) Location The applicant is responsible for the accuracy of the location submitted for the project. County: Vermilion Township, Range, Section: 20N, 12W, 20 IL Department of Natural Resources Contact Impact Assessment Section 217-785-5500 Division of Ecosystems & Environment Disclaimer The Illinois Natural Heritage Database cannot provide a conclusive statement on the presence, absence, or condition of natural resources in Illinois. This review reflects the information existing in the Database at the time of this inquiry, and should not be regarded as a final statement on the site being considered, nor should it be a substitute for detailed site surveys or field surveys required for environmental assessments. If additional protected resources are encountered during the project’s implementation, compliance with applicable statutes and regulations is required. Planting and Maintenance Plan Middle Fork Vermilion River Erosion Mitigation and Riverbank Stabilization Prepared for: Dynegy Midwest Generation, LLC Prepared by: Stantec Consulting Services Inc. June 27, 2018 PLANTING AND MAINTENANCE PLAN Table of Contents 1.0 INTRODUCTION ............................................................................................................. 1 2.0 2.1 2.2 2.3 2.4 PLANTING PLAN ............................................................................................................ 1 LIVE STAKES AND LIVE BRUSH LAYERING......................................................................... 1 2.1.1 Live Stakes ....................................................................................................... 2 2.1.2 Live Brush Layering – Willow Whips ............................................................... 2 BANKFULL BENCH ZONE ................................................................................................... 3 UPLANDS ............................................................................................................................ 6 IRRIGATION ........................................................................................................................ 7 3.0 SUCCESS CRITERIA ........................................................................................................ 7 4.0 4.1 4.2 MONITORING ................................................................................................................ 8 QUALITATIVE MONITORING.............................................................................................. 8 QUANTITATIVE MONITORING ........................................................................................... 8 5.0 MAINTENANCE ACTIVITIES ........................................................................................... 9 6.0 CLOSURE ........................................................................................................................ 9 LIST OF TABLES Table 1. Live Stakes and Live Brush Layering Species .............................................................. 3 Table 2. Bankfull Zone Plantings.................................................................................................. 4 Table 3. Bankfull Zone Seed Mix ................................................................................................. 5 Table 4. Upland Zone Plantings .................................................................................................. 6 Table 5. Upland Zone Seed Mix .................................................................................................. 7 LIST OF APPENDICES APPENDIX A PLANTING DETAIL PLANTING AND MAINTENANCE PLAN 1.0 INTRODUCTION This Planting and Maintenance Plan includes a description of the proposed seed mixtures and plantings and an outline of the basic procedures to be followed in order to promote the successful establishment of vegetation following construction of the Middle Fork Vermilion River Erosion Mitigation and Riverbank Stabilization Project. As a result of Dynegy Midwest Generation, LLC’s (DMG) commitment to this project, enhancements have been included in this Planting and Maintenance Plan to provide aesthetic improvements to the constructed project beyond those typically identified in similar design projects. These enhancements include: 1. Increased density of plantings. Plantings in similar designs are typically spaced on approximately 6 to 10-foot centers. Plantings in this plan are called for on approximately 4-foot centers, randomly spaced to reflect native recruitment. 2. Use of containerized plants. In addition to the use of live stakes and whips, containerized trees and shrubs are identified in the plans to supplement the stakes and whips. The intent of these are to provide more rapid revegetation of the riverbank. 3. Increased shrub plantings. The planting plan includes a heavier mix of shrubs than in typical similar designs. The intent of these shrubs is to aid in more rapid covering of exposed rock. 4. Maintenance schedule. DMG is committed to establishing a dense stand of vegetation along the project. The maintenance schedule identified in this plan includes more frequent inspections, and associated mitigation of identified planting deficiencies, than similar design projects. 2.0 PLANTING PLAN Permanent planting and/or seeding will be required for all areas within the limits of disturbance. Only certified seed and nursery stock will be allowed. Conceptual planting plan details describing the vegetation design are located in Appendix A; however, exact types, sizes, and sources of propagules, as well as seed mixes and rates of application, will be further refined in the final design. Note that the drawing included in Appendix A is an enhanced version of Sheet 15 of the Permit Drawings. The Stone Toe Protection detail has been modified to clearly illustrate planting zones. 2.1 LIVE STAKES AND LIVE BRUSH LAYERING Proposed live staking and live brush layering (willow whips) plant material is shown in Table 1. All plant material will be harvested locally or purchased from a local source. All live stakes and willow whips will be dormant at time of acquisition and planting. Live stakes should be installed between November 1 and May 15. Typically, willow cuttings are installed after spring thaw but before bud break, or in autumn after leaves change color and/or fall. v:\1756\active\175657154\clerical\report\streambank_stabilization\planting_plan\vermilion_riverbank_planting_maintenance_plan_20180627.docx 1 PLANTING AND MAINTENANCE PLAN 2.1.1 Live Stakes Live stakes will be ½ - 2” in diameter and approximately 3 feet in length. During preparation, the basal ends of the live stakes will be cleanly cut at an angle to facilitate easy insertion into the soil, while the tops will be cut square or blunt for tamping. All limbs will be removed from the sides of the live cutting prior to installation. Cuttings for live brush layers will be harvested in manner such that they are cut and planted immediately or within 24 hours. If plant material for live brush layers is sourced from offsite and cannot be planted on the same day as harvest, the willow whips should immediately be put into water, soaked for up to 5 days, and then planted as soon as possible. Cuttings will remain wet until they are planted. Outside storage locations should be continually shaded and protected from wind and direct sunlight. Live stakes will primarily be used as joint planting along the face of the stone toe protection. Installation of the live stakes will need to occur concurrent with the finalized placement of stone toe protection and void filled riprap for sufficient coverage/penetration of the live stakes within the final grade (2/3 of the stake length within the ground). A minimum of 6” of soil will be placed around the buried portion of the stake prior to continuation of stone toe/void filled riprap placement. Stakes will be spaced approximately 2 feet on center. Live stakes should be installed according to the configuration presented in the details of the plans. One or two inches will be cut cleanly off of the top of each live stake (with loppers) at an angle of approximately 15 degrees following installation. Any stakes that are split or damaged during installation will be removed and replaced. Areas where live stakes have been installed will be watered on a daily basis, throughout the duration of construction (anticipated as 6 to 8 months), immediately following successful installation. 2.1.2 Live Brush Layering – Willow Whips Willow whips, which are used for the live brush layering, will be ½ - 2” in diameter and 4 – 6 feet in length. During preparation, the basal ends of the whips will be cleanly cut, while the tops will remain uncut leaving the terminal end of the whip, as well as all lateral branches, intact. Cuttings for live brush layers will be harvested in manner such that they are cut and planted immediately or within 24 hours. If plant material for live brush layers is sourced from offsite and cannot be planted on the same day as harvest, the basal ends of the willow whips (minimum 12 inches of basal end length) should immediately be put into water, soaked for up to 5 days, and then planted as soon as possible. Cuttings will remain wet until they are planted. Outside storage locations should be continually shaded and protected from wind and direct sunlight. Willow whips will be placed in thin, overlapping layers between- and perpendicular-to soil wraps, with the tips of the willow whips oriented towards the river and slightly upward, while the cut ends are oriented downward toward the back of the soil lift. Brush layers will either be covered by additional soil lifts or covered with a minimum of 3” of soil. v:\1756\active\175657154\clerical\report\streambank_stabilization\planting_plan\vermilion_riverbank_planting_maintenance_plan_20180627.docx 2 PLANTING AND MAINTENANCE PLAN Stakes will be spaced evenly across the top of a soil lift at an approximate density of 2-4 stems per linear foot, such that any lateral branches overlap. Live brush layers should be installed according to the configuration presented in the details of the final plan sheets. Any willow whips that are damaged during installation will be removed and replaced. Areas where live brush layers have been installed will be watered on daily basis, throughout the duration of construction (anticipated as 6 to 8 months), immediately following successful installation. Table 1. Live Stakes and Live Brush Layering Species 2.2 Common Name Scientific Name Silky dogwood Cornus amomum Gray dogwood Cornus foemina Red-osier dogwood Cornus sericea Peachleaf willow Salix amigdyloides Pussy willow Salix discolor Sandbar willow Salix interior Black willow Salix nigra Elderberry Sambucus canadensis Nannyberry Viburnum lentago BANKFULL BENCH ZONE Bankfull revegetation will consist of the planting of rooted cuttings, container-grown plants (Table 2) and broadcast seeding (Table 3). The installation of plants, seedlings can occur at any time of year, though no planting will occur when the temperature is below freezing. Seeding will immediately precede planting for a given restoration reach. Soil that is compacted in the bankfull bench area of planting and seeding will be amended with compost at a rate of 403 yd3/acre (depth of 3”); deep-ripped and graded to contour. Fertilizer used for topdressing will be 10–10–10 (N-P-K) analysis and will be applied at the rate of 50 pounds per acre. The sub-grade should be loosened to a minimum depth of 8 inches and graded to a smooth even surface with a loose, fine texture. The areas to be planted and seeded are then to be rolled and raked to remove any ridges and fill depressions that are greater than +/-0.2 feet to meet finish grades. Prepared areas are to be moistened prior to seeding when soil is dry, but care will be taken not to create muddy conditions. Prepared areas are to be restored if eroded or otherwise disturbed after final grading and before planting. Seed will be sown with a spreader or a seeding machine at a rate of 41 pounds per acre. Seed is not to be broadcast or dropped when wind velocity exceeds 5 mph and will be evenly sown. Wet seed or seed that is moldy or otherwise damaged in transit or storage is not to be used. After being sown, the seed will be raked into the top 1/4 inch of the topsoil, lightly rolled, and watered with fine spray. Seeded areas on riverbanks will be covered with weed-free straw mulch and protected/secured with staked coir fiber matting. v:\1756\active\175657154\clerical\report\streambank_stabilization\planting_plan\vermilion_riverbank_planting_maintenance_plan_20180627.docx 3 PLANTING AND MAINTENANCE PLAN Within one week of seeding the bankfull zone, woody species will be planted in the seeded areas. Trees and shrubs are to be planted 4 feet on center, random spacing, at approximately 2,700 stems per acre to emulate native regenerative patterns (~1 stem every 16 ft2, though actual spacing will be determined in the field to create a heterogenous irregularly-spaced mixture of species throughout the bankfull planting zone). The planting area should be cleared of straw mulch immediately prior to digging the planting hole, if necessary. The planting trench or hole will be deep and wide enough to permit roots to spread out and down without J-rooting, at least twice the diameter of the root ball. Topsoil and subsoil will be kept separate during excavation. The root ball will be placed on solid soil and not loose backfill. The plant stem will remain upright. Soil will be replaced around the transplanted vegetation and tamped around the tree firmly to eliminate air pockets. Mulching should be replaced in the area around the new planting. Table 2. Bankfull Zone Plantings Common Name Scientific Name Pot Size/Caliper Life Form Box elder Acer negundo 5-Gallon / 1” Tree Red maple Acer rubrum 5-Gallon / 1” Tree Hackberry Celtis occidentalis 5-Gallon Tree Green ash Fraxinus pennsylvanica 5-Gallon Tree Sweetgum Liquiambar styraciflua 5 or 15-Gallon Tree Sycamore Platanus occidentalis 5 or 15-Gallon/ 1-2” Tree Swamp white oak Quercus bicolor 5 or 15-Gallon / 1-2” Tree Bur oak Quercus macrocarpa 5 or 15-Gallon / 1-2” Tree American hazelnut Corylus americana 2 or 5-Gallon Shrub Shrubby Cinquefoil Dasiphora fruticosa 5-Gallon Shrub Shrubby St. John's-Wort Hypericum prolificum 5-Gallon Shrub Ninebark Physocarpus opulifolius 5-Gallon Shrub Climbing prairie rose Rosa setigera 5-Gallon Shrub Bittersweet Celastrus scandens Plugs/bareroot Vine Virgin's-bower Clematis virginiana Plugs Vine Virginia creeper Parthenocissus quinquefolia Plugs Vine v:\1756\active\175657154\clerical\report\streambank_stabilization\planting_plan\vermilion_riverbank_planting_maintenance_plan_20180627.docx 4 PLANTING AND MAINTENANCE PLAN Table 3. Bankfull Zone Seed Mix Common Name Scientific Name Growth Form Pounds per Acre Blue joint grass Calamagrostis canadensis Grass 5 Nodding wild rye Elymus canadensis Grass 5 Virginia wild rye Elymus virginicus Grass 5 Fowl manna grass Glyceria striata Grass 5 Rice cut grass Leersia oryzoides Grass 5 Switchgrass Panicum virgatum Grass 5 Prairie cordgrass Spartina pectinata Grass 5 Common water plantain Swamp milkweed Alisma subcordatum Forb 0.25 Asclepias incarnata Forb 0.25 Tall tickseed Coreopsis tripteris Forb 0.25 Prairie mimosa Desmanthus illnoensis Forb 0.25 Boneset Eupatorium perfoliatum Forb 0.25 Queen-of-the-prairie Filipendula rubra Forb 0.25 Sneezeweed Helenium autumale Forb 0.25 Sawtooth sunflower Helianthus grosseserratus Forb 0.25 Foxglove beardtongue Penstemon digitalis Forb 0.25 Common mountainmint Brown-eyed Susan Pycnanthemum virginianum Forb 0.25 Rudbeckia triloba Forb 0.25 Prairie rosinweed Silphium terebinthinaceum Forb 0.25 Late goldenrod Solidago gigantea Forb 0.25 Riddell's goldenrod Solidago riddellii Forb 0.25 New England aster Symphyotrichum novae-angliae Forb 0.25 Purplestem aster Symphyotrichum puniceum Forb 0.25 Blue vervain Verbena hastata Forb 0.25 Blunt spike rush Eleocharis obtusa Rush 0.25 Creeping spike rush Eleocharis smallii Rush 0.25 Chairmaker's rush Scirpus americanus Rush 0.25 Willow sedge Carex lurida Sedge 0.5 Fox sedge Carex vulpinoidea Sedge 0.5 v:\1756\active\175657154\clerical\report\streambank_stabilization\planting_plan\vermilion_riverbank_planting_maintenance_plan_20180627.docx 5 PLANTING AND MAINTENANCE PLAN 2.3 UPLANDS Upland revegetation will consist of the planting of bare root seedlings, rooted cuttings, or container-grown plants (Table 4) as well as broadcast seeding and incorporation of upland seed mix within the soil lifts (Table 5). The upland soil lifts will utilize the live brush layering (discussed above) to create a robust bioengineered bank conducive for rapid revegetation and side slope stability. The upland area beyond the soil lifts will include broadcast seed, which will be raked into the top 1/4 inch of the topsoil, lightly rolled, and watered with fine spray. Seeded areas are to be protected by spreading weed-free straw mulch uniformly to form a continuous blanket over seeded areas. Straw mulch is to be spread by hand, blower, or other suitable equipment. Fertilizer used for topdressing will be 10–10–10 (N-P-K) analysis and will be applied at the rate of 50 pounds per acre. Additionally, a mix of larger caliper (1-2”) containerized trees will be planted with a 4’ on center spacing to encourage more rapid revegetation. Table 4. Upland Zone Plantings Common Name Scientific Name Pot Size/Caliper Life Form Redbud Cercis canadensis 5 or 15-Gallon/ 1-2” Tree American beech Fagus grandifolia 5 or 15-Gallon/ 1-2” Tree Black walnut Juglans nigra 5 or 15-Gallon/ 1-2” Tree Tulip tree Liriodendron tulipifera 5 or 15-Gallon/ 1-2” Tree White oak Quercus alba 5 or 15-Gallon/ 1-2” Tree Red oak Quercus rubra 5 or 15-Gallon/ 1-2” Tree American hazelnut Corylus americana 2 or 5-Gallon Shrub Shrubby cinquefoil Dasiphora fruticosa 4 or 5-Gallon Shrub Shrubby St. John'sWort Hypericum prolificum 5 or 5-Gallon Shrub Ninebark Physocarpus opulifolius 3 or 5-Gallon Shrub Climbing prairie rose Rosa setigera 2 or 5-Gallon Shrub Virgin's-bower Clematis virginiana Plugs Vine Bittersweet Celastrus scandens Plugs/bareroot Vine v:\1756\active\175657154\clerical\report\streambank_stabilization\planting_plan\vermilion_riverbank_planting_maintenance_plan_20180627.docx 6 PLANTING AND MAINTENANCE PLAN Table 5. Upland Zone Seed Mix Common Name Scientific Name Growth Form Pounds per Acre Big bluestem Andropogon gerardii Grass 5 Indian grass Sorghastrum nutans Grass 5 Little bluestem Schizachyrium scoparium Grass 5 Switchgrass Panicum virgatum Grass 5 Wild river oats Chasmanthium latifolium Grass 5 Side-oats gramma Bouteloua curtipendula Grass 5 Blue false indigo Baptisia australis Forb 1 Brown-eyed Susan Rudbeckia hirta Forb 1 Common milkweed Asclepias syrica Forb 1 Dotted Horsemint Monarda punctata Forb 1 Golden Alexander Zizia aurea Forb 0.5 Hairy Woodmint Blephilia hirsuta Forb 0.5 Hoary vervain Verbena stricta Forb 0.5 Ohio Spiderwort Tradescantia ohiensis Forb 0.5 Partridge pea Chamaecrista fasciculata Forb 0.5 Prairie coneflower Ratibida pinnata Forb 0.5 Purple coneflower Echinacea purpurea Forb 0.5 Showy tick-trefoil Desmodium canadense Forb 0.5 Smooth oxeye Heliopsis helianthoides Forb 0.5 Tall Ironweed Vernonia gigantea Forb 0.5 Tall tickseed Coreopsis tripteris Forb 0.5 Wild bergamot Modarda fistulosa Forb 0.5 2.4 IRRIGATION As each reach is planted following construction, workers will use a pump submersed in the channel to irrigate freshly planted and/or seeded areas. Irrigation will occur daily through construction (anticipated as 6 to 8 months) to help plants establish. Supplemental watering may be necessary on a periodic basis following construction completion if dry conditions occur. 3.0 SUCCESS CRITERIA Success criteria for riparian vegetation include: • 80% of the planted trees and shrubs are alive after Years 1 through 3, and 70% of the trees and shrubs, including native recruitment, survive through Years 4 and 5. • Vegetation canopy cover of at least 40% after Year 3, as determined by a pointintercept quantitative cover method. v:\1756\active\175657154\clerical\report\streambank_stabilization\planting_plan\vermilion_riverbank_planting_maintenance_plan_20180627.docx 7 PLANTING AND MAINTENANCE PLAN • Weed cover not greater than 5% absolute cover, and no areas of 100 ft2 or larger dominated by weed species. • An herbaceous plant species diversity of at least 15 desirable native plants. 4.0 MONITORING 4.1 QUALITATIVE MONITORING Following construction, the riverbank will be monitored throughout each growing season following seeding and planting for a minimum period of 5 years. Monitoring will consist of: 1) inspection of leaf development, shoot elongation, and general survivability, 2) estimation of overall vegetated ground cover, 3) photo documentation at predetermined permanent photo points. Monthly monitoring will occur during the initial growing season (spring months) to assess the early establishment of the riparian and upland plantings. Additionally, during the first 12 months after project completion an inspection will occur following any storm event in excess of 4,500 cfs, recorded at the USGS Gage downstream. A minimum of 8 monthly site inspections annually (April – November) will be conducted for years 1 - 5 after planting. 4.2 QUANTITATIVE MONITORING Annually, vegetation canopy cover will be quantified along 10-meter-long, permanently established transects within each of the 5 segments along the project reach. For each segment, transects will be established at two riparian/bankfull benches and two upland locations with permanent markers at each end, for a total of 20 transects. A photograph will be taken each monitoring year from each end of the transects. Vegetation canopy cover will be quantified using a point-intercept method (Mueller-Dombois and Ellenberg 1974). Twenty points will be sampled at one-meter intervals along each 10-meter transect. The sample point will be perpendicular to- and 0.50 meters from- the transect. At each sample point, a pin flag will be lowered to ground-level, point down, first on the right and then on the left. If overstory vegetation is present, the pin will first be elevated vertically to record any overstory vegetation, and then directed downward to record vegetation in potential shrub and herbaceous canopies. Vegetation along the vertical profiles will be recorded as first, second, and third hits. If vegetation is not present along the vertical profile, litter, rock, soil, etc. will be recorded. All vegetation hits will be tallied by species. For each cover transect, the absolute percent cover of vegetation, litter, rock, and soil will be calculated using only first hit data. The relative cover of each species will be calculated using all hit data. The data for all 20 transects will be summed to describe the entire community. Data on v:\1756\active\175657154\clerical\report\streambank_stabilization\planting_plan\vermilion_riverbank_planting_maintenance_plan_20180627.docx 8 PLANTING AND MAINTENANCE PLAN species richness (diversity) will be collected by identifying all plant species present in a twometer-wide quadrat centered along the 10-meter cover transect. Qualitative and quantitative monitoring results will be compiled in an annual report, to be submitted to DMG for the monitoring period covering the first 5 years. The annual report will include summary of findings, photographs, and recommendations for remedial actions to address any areas that are not meeting the success criteria. 5.0 MAINTENANCE ACTIVITIES A qualified scientist, will conduct the quantitative monitoring described above, and will also note hydrological functioning, evaluate the success of the seeding and planting, and note any problems with erosion, or weeds. If any of the permanent transects are shown to not be meeting the success criteria, appropriate remedial action will be recommended. Additionally, if any of the following deficiencies are observed the following actions will be implemented. a. If the seed mix has not germinated in some areas, these areas will be reseeded. b. If shrubs or trees are not meeting the survivability and/or canopy cover criteria, additional containerized trees/shrubs will be planted. c. Weed control will be conducted throughout the monitoring period. If weed cover exceeds the success criteria, hand weeding or other weed control methods will be performed during monitoring to keep weeds from producing seeds and to control weed competition during the establishment period of native plants. d. If live stakes and/or live brush layering are not meeting the minimum survivability criteria 6.0 CLOSURE This Planting and Maintenance Plan has been prepared to demonstrate DMG’s commitment to implementing the project in a manner that will promote the successful establishment of dense native vegetation that screens the stone toe protection and provides scenery that is consistent with the riverbank upstream and downstream of the project site. v:\1756\active\175657154\clerical\report\streambank_stabilization\planting_plan\vermilion_riverbank_planting_maintenance_plan_20180627.docx 9 APPENDIX A PLANTING DETAIL ... - EXISTING CHANNEL BED ... - ... - . EXISTING CHANNEL BED (JOINT PLANTING BETWEEN 15' s.CTioN SH Em WOOD STAKE TYP. GEOGRID BETWEEN LIVE BRUSH LAYERS NATIVE FILL MATERIAL Upland Zone. Containerized Tree I LAYERBENCH WIDTH)WIDTH + 2' EXCAVATION LIMITS GEOTEXTILE Bankfull/Riparian Zone. Topsoil mixed with seed mix WEIGHTED RIPRAP TOE PLACED BELOW CH ANNEL INVERT VOID-FILLED RIPRAPWIDTH _ - (STONE TOE DM1Nl + (LIVE Ll VE BRUSH LAYER HEIGHT 1' TYP. Upland Zone. Topsoil mixed with seed mix REFERENCE KEY @=SECTION OR DETAIL NO. TARGET DRAWING DETAILSTONE TOE pROTECTION - SEGMENTS 2-5 NOT TO SCALE TOE BURY WIDTH = 10' WILLOW WHIP 3' TYP. ULDERS 2' ON CENTER) FIN•HED SLOPE OF sroNE r-----Bankfull/Riparian Containerized Tree YERING LIVE WILLOW WHIP 3• TYP. COIRAND/OR GEOSYNTHETIC MATIING FINISHED SLOPE 0 IS SPECIFIED ON DETAIL - CONSTRUCTION ACCESS AND FUTURE MAINTENANCE ROAD SCALE: 1/2" =1'-0" 12"THICK (MIN.) COMPACTED CRUSHED STONE SURFACE DETAIL - EMBEDDED BOULDERS - SEGMENT 1 NOTTO SCALE EMBEDDED BOULDERS THICKNESS= 24" TO MATCH EXISTING GROUND EMBEDDED BOULDERS AT .. ....1. LIVE WILLOW WHIP 3' TYP (JOINT PLANTING . BETWEEN BOULDERS) BANKFULL RIVER STAGE/OHWM BANKFULL RIVER STAGE/OHWM Joint planted Live Stakes with 6" of soil cover RECOMMENDED RIPRAP GRADATION MAX. MIN. LBS. INCHES LBS. I INCHES 146 14.3 62 10.7 Dis 197 15.8 115 13.2 D3o 197 292 18.0 15.8 Dso 343 608 23 19 D9o 27 400 20 D100 984 --' >- Chkd. TCD Dsgn. 0 15 of 15 Drawing No. 15 Revision Sheet Dwn. File Name: Project Number. 175657154 SEAL PLACEHOLDER DRAFT - NOT FOR CONSTRUCTION Permit-Seal 01'.) :;::- (.'.) c: w .!!1 z ff. ii3 ::: -Cl (.'.) w ""zw i;;( z0 11111H11111 H