FINAL AMENDED PHASE III WATERSHED IMPLEMENTATION PLAN New York Chemung and Susquehanna River Basins May 2021 DIVISION OF WATER BUREAU OF WATERSHED RESOURCE MANAGEMENT 625 Broadway, Albany, NY 12223 P: (518) 402-8086 | F: (518) 402-9029 | [email protected] www.dec.ny.gov New York State Final Amended Phase III Watershed Implementation Plan Table of Contents Executive Summary ..................................................................................................................5 Section 1: Introduction .............................................................................................................6 Section 1.1: New York’s Connection to the Chesapeake Bay .................................................. 6 Section 1.2: Chesapeake Bay Watershed Model .....................................................................7 Section 1.3: Ambient Water Quality Monitoring ......................................................................12 Section 1.4: Land Use and Land Ownership ..........................................................................14 Section 1.5: May 2021 Final Amendment to New York’s Phase III WIP ................................. 16 Section 2: 2020 Progress and Sub-Allocations to Major Source Sectors ............................ 18 Section 2.1: 2020 Progress and Sector Contributions .............................................................. 18 Section 2.2: Midpoint Assessment .........................................................................................20 Section 2.3: Amended 2025 Sector Targets ..........................................................................20 Section 3: Local Engagement Strategies ...............................................................................21 Section 3.1: Phase III WIP Development and Outreach ........................................................... 21 Section 3.2: Local Planning Goals .........................................................................................22 Section 3.3: Ongoing Engagement for Implementation ..........................................................23 Section 4: State Pollutant Discharge Elimination System (SPDES) Permit Program Overview ..................................................................................................................................25 Section 4.1: SPDES Permits in Effect ....................................................................................2 6 Section 4.2: SPDES Program Enforcement ...........................................................................27 Section 5: Agricultural Sector ................................................................................................28 Section 5.1: Current Sector Loading Baseline .......................................................................29 Section 5.2: NYS Concentrated Animal Feeding Operation (CAFO) Permit Program ............. 30 Section 5.3. Agricultural Environmental Management (AEM) Program ................................... 34 Section 5.4: Upper Susquehanna Coalition (USC) ................................................................... 39 Section 5.5: NYS Agriculture BMP Input Deck .......................................................................40 Section 5.6: Local Planning Goals for the Agriculture Sector ................................................. 60 Section 5.7: Agriculture BMP Tracking and Reporting Protocols ............................................ 62 Section 5.8: Agricultural Sector BMP Funding Programs ....................................................... 62 Section 5.9: Agricultural Economic Outlook ...........................................................................73 Section 5.10: Gap Analysis and Strategy to Fill Gaps ............................................................75 Section 6: Wastewater Sector ................................................................................................ 87 Section 6.1: Current Sector Loading Baseline .......................................................................87 Section 6.2: Requirements for Wastewater Facilities .............................................................87 Section 6.3: Bay-Significant Wastewater Treatment Facilities ................................................ 89 Section 6.4: Non-Significant Wastewater Treatment Facilities .............................................. 102 Page 2 of 158 New York State Final Amended Phase III Watershed Implementation Plan Section 6.5: Combined Sewer Overflows ............................................................................. 102 Section 6.6: Negligible Discharges ...................................................................................... 103 Section 6.7: Tracking and Reporting Wastewater Data .......................................................... 103 Section 6.8: Wastewater Funding and Loan Programs ........................................................ 104 Section 6.9: Wastewater Trading and Offset Program ........................................................ 107 Section 6.10: Gap Analysis and Strategy to Fill Gaps .......................................................... 107 Section 7: Developed (Urban Stormwater) Sector ............................................................... 108 Section 7.1: Current Loading Baseline ................................................................................. 108 Section 7.2: New York Phase II Stormwater Program ............................................................ 110 Section 7.3: Construction and Post Construction Practices Technical Standards ................ 110 Section 7.4: Municipal Separate Storm Sewer Systems (MS4) General Permit .................... 110 Section 7.5: Construction Stormwater General Permit ........................................................... 112 Section 7.6: NYS Developed BMP Input Deck ..................................................................... 114 Section 7.7: Local Planning Goals for the Developed Sector ............................................... 125 Section 7.8: Developed BMP Tracking and Reporting Protocols .......................................... 126 Section 7.9: Developed Sector BMP Funding Programs ...................................................... 127 Section 7.10: Gap Analysis and Strategy to Fill Gaps .......................................................... 130 Section 8: Remaining Source Categories ............................................................................ 138 Section 8.1: Natural Sector .................................................................................................. 138 Section 8.2: Septic Systems ................................................................................................ 142 Section 8.3: Federal Facilities .............................................................................................. 144 Section 9: Accounting for Growth........................................................................................ 145 Section 10: Addressing Climate Change ............................................................................. 145 Section 10.1: Partnership Decisions Regarding Climate Change ......................................... 145 Section 10.2: Current Action Plans, Programs and Regulations ........................................... 146 Section 10.3: BMP Evaluation and Co-Benefits ................................................................... 151 Section 11: Chesapeake Bay Watershed Agreement and BMP Co-Benefits ..................... 152 Section 12: Other Key Program Areas ................................................................................. 156 Section 12.1: Alternative Land Use Scenarios ..................................................................... 156 Section 12.2: Floodplain Management ................................................................................. 156 Section 12.3: Planned SPDES Program Improvement ......................................................... 157 Section 13: Partnership Decisions related to the Conowingo Dam ................................... 157 Appendices ............................................................................................................................ 158 Page 3 of 158 New York State Final Amended Phase III Watershed Implementation Plan List of Tables Table 1. Change in New York load source loads between CAST-17 and CAST-19. .............................................. 11 Table 2. Summary of ambient water quality trends for nitrogen, phosphorus, and sediment ............................... 13 Table 3. May 2021 WIP Implementation Deck and Remaining Reductions ......................................................... 17 Table 4. Nutrient Exchange and Updated Nitrogen and Phosphorus Targets ..................................................... 18 Table 5. 2020 Progress and Remaining Reductions............................................................................................ 19 Table 6. 2020 Nutrient and Sediment Contributions from Sector Sources .......................................................... 19 Table 7. Midpoint Progress by Sector .................................................................................................................. 20 Table 8. Major Source Category Nutrient Targets ............................................................................................... 21 Table 9. New York Medium and Large CAFO Cutoffs by Number of Animals