Appendix 13-C Stormwater Pollution Prevention Plan STORMWATER POLLUTION PREVENTION PLAN
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Appendix 13-C Stormwater Pollution Prevention Plan STORMWATER POLLUTION PREVENTION PLAN FOR COMPLIANCE WITH THE NEW YORK STATE DEPARTMENT OF ENVIRONMENTAL CONSERVATION GENERAL PERMIT (GP-0-20-001) FOR STORMWATER DISCHARGES FROM CONSTRUCTION ACTIVITIES Project: Cider Solar Farm Towns of Elba and Oakfield County of Genesee State of New York Owner: Hecate Energy Cider Solar LLC 621 W. Randolph St Chicago, IL 60661 Prepared by: Stantec Consulting Services, Inc. 61 Commercial Street, Suite 100 Rochester, NY 14614 Date Prepared: May 4, 2021 Stormwater Pollution Prevention Plan for the Cider Solar Farm Project Towns of Elba and Oakfield, County of Genesee, State of New York May 4, 2021 Table of Contents 1.0 INTRODUCTION ............................................................................................................. 1 1.1 SPDES COVERAGE ........................................................................................................ 1 2.0 EXECUTIVE SUMMARY ................................................................................................... 2 2.1 PROJECT NAME ............................................................................................................ 2 2.2 PROJECT OVERVIEW ..................................................................................................... 2 2.3 PROJECT LOCATION ..................................................................................................... 2 2.3.1 Project Location Map ................................................................................. 3 2.3.2 Project Location (Road Map Background) .............................................. 4 2.3.3 Project Contacts ......................................................................................... 6 2.3.4 Project Responsibilities ................................................................................ 6 3.0 PROJECT SCOPE AND CONDITIONS............................................................................. 7 3.1 EXISTING SITE CONDITIONS ........................................................................................... 7 3.2 PURPOSE OF THE STORMWATER POLLUTION PREVENTION PLAN REPORT ................. 7 3.3 INSPECTION REPORTS ................................................................................................... 8 3.4 SOIL CHARACTERISTICS ................................................................................................ 9 3.5 DESCRIPTION OF WORK ............................................................................................... 9 3.6 WATERBODIES, WETLANDS, TMDL WATERSHEDS AND 303(D) WATERS .....................10 3.7 SEQUENCE AND TIMING OF CONSTRUCTION ACTIVITIES ..........................................11 4.0 STORMWATER MANAGEMENT CONTROLS ................................................................. 13 4.1 STORMWATER QUANTITY MANAGEMENT ...................................................................13 4.1.1 Design Methodology .................................................................................13 4.1.2 Design Storm ..............................................................................................14 4.1.3 Stormwater Management Analysis Points ...............................................15 4.1.4 Stormwater Quantity Management Facilities .........................................15 4.1.5 Findings of the Proposed Conditions Hydrologic Analysis ......................16 4.2 STORMWATER QUALITY MANAGEMENT .....................................................................16 4.2.1 Stormwater Quality Management Facilities ............................................16 4.2.2 Findings of the Proposed Stormwater Quality Analysis ...........................17 4.3 RUNOFF REDUCTION CAPACITY .................................................................................17 4.3.1 Runoff Reduction Management Facilities ...............................................17 4.3.2 Findings of the Runoff Reduction Analysis ...............................................17 5.0 SEDIMENT AND EROSION CONTROLS ......................................................................... 18 5.1 EROSION CONTROL FEATURES ....................................................................................18 5.2 TEMPORARY EROSION CONTROL/SLOPE STABILIZATION PRACTICES .......................19 5.3 MAINTENANCE AND INSPECTIONS .............................................................................21 6.0 SPILL PREVENTION AND SOLID WASTE MANAGEMENT .............................................. 23 6.1 MANAGEMENT OF SPILLS AND RELEASES ...................................................................23 mm u:\190502038\05_report_deliv\deliverables\reports\swppp\rpt_cider solar swppp_20210504.docx i Stormwater Pollution Prevention Plan for the Cider Solar Farm Project Towns of Elba and Oakfield, County of Genesee, State of New York May 4, 2021 6.2 REFUELING AND VEHICLE LUBRICATION .....................................................................23 6.3 SOLID WASTE MANAGEMENT ......................................................................................23 6.4 SPILL PREVENTION MEASURES .....................................................................................23 7.0 COMPLIANCE WITH FEDERAL, STATE, AND LOCAL REGULATIONS ............................ 27 7.1 ENDANGERED SPECIES ................................................................................................27 7.2 CULTURAL RESOURCES ................................................................................................27 7.3 OTHER PERMIT REGULATIONS ......................................................................................27 7.4 RETENTION OF RECORDS .............................................................................................28 8.0 POST-CONSTRUCTION STORM WATER MANAGEMENT MEASURES ............................ 29 9.0 NYS OFFICE OF PARKS, RECREATION, AND HISTORIC PRESERVATION (OPRHP) ...... 30 10.0 NOTICE OF INTENT (NOI) AND ACKNOWLEDGEMENT OF NYSDEC’S RECEIPT OF THE NOI .................................................................................................................. 31 11.0 CERTIFICATIONS .......................................................................................................... 32 11.1 CONTRACTOR CERTIFICATION ...................................................................................32 LIST OF FIGURES Figure 1 Project Location map with NYSDEC Regional Boundaries ..................................... 3 Figure 2 Project Location with Road Map Background ....................................................... 4 Figure 3 Project Location with an Orthophoto Background ................................................ 5 LIST OF TABLES Table 1 – SCS Soil Types ........................................................................................................... 9 Table 2 – Rainfall Depth for Design Storm Event...................................................................15 Table 3 – Peak Discharge Rate Comparison ........................................................................16 Table 4 – Stormwater Quality Treatment Volume Comparison ..........................................17 Table 5 – Stormwater Runoff Reduction Volume Comparison ...........................................18 LIST OF APPENDICES CONSTRUCTION SITE PERSONNEL CONTACT LIST ....................................... A SPDES GENERAL PERMIT (NYSDEC GP 0-20-001) ........................................ B CONSTRUCTION SITE LOGBOOK ................................................................. C ORTHOPHOTOGRAPHS WITH SOIL SURVEY DATA ....................................... D STORMWATER QUALITY AND RUNOFF REDUCTION CALCULATIONS ........... E NYSDEC BEST MANAGEMENT PRACTICES (BMP’S) – INCLUDING STANDARDS AND SPECIFICATIONS ............................................................................... F mm u:\190502038\05_report_deliv\deliverables\reports\swppp\rpt_cider solar swppp_20210504.docx ii Stormwater Pollution Prevention Plan for the Cider Solar Farm Project Towns of Elba and Oakfield, County of Genesee, State of New York May 4, 2021 AMENDMENTS TO THE SWPPP (IF APPLICABLE) .......................................... G NYS OFFICE OF PARKS, RECREATION AND HISTORIC PRESERVATION (OPRHP) ............................................................................................... H NOTICE OF INTENT AS SUBMITTED TO NYSDEC AND A COPY OF THE NYSDEC ACKNOWLEDGEMENT OF NOTICE OF INTENT FOR COVERAGE UNDER NYSDEC SPDES GENERAL PERMIT GP-0-20-001 ................................................ I DRAINAGE MAPS, LAND COVER MAPS, PEAK DISCHARGE TABLE, DRAINAGE AREA SUMMARY, CN VALUES TABLE, HYDROLOGIC STORMWATER MODEL RESULTS .............................................................................................................. J WETLAND EXHIBITS ....................................................................................... K EROSION CONTROL PLANS .......................................................................... L mm u:\190502038\05_report_deliv\deliverables\reports\swppp\rpt_cider solar swppp_20210504.docx iii Stormwater Pollution Prevention Plan for the Cider Solar Farm Project Towns of Elba and Oakfield, County of Genesee, State of New York May 4, 2021 1.0 INTRODUCTION This Stormwater Pollution Prevention Plan (SWPPP) for construction activities associated with the Cider Solar project has been prepared for Hecate Energy Cider Solar LLC (Hecate) the Owner/Operator.