Long Island Sound Enhanced Implementation Plan
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NEW YORK STATE DEPARTMENT OF EVIRONMENTAL CONSERVATION Long Island Sound Enhanced Implementation Plan 4/18/2013 Table of Contents Table of Contents .......................................................................................................................................... 1 New York State Long Island Sound Enhanced Implementation Plan ......................................................... 1 1 Executive Summary .............................................................................................................................. 1 2 Background........................................................................................................................................... 4 2.1 LIS N TMDL .................................................................................................................................... 4 2.1.1 Waste Load Allocation .......................................................................................................... 6 2.1.2 Load Allocation ...................................................................................................................... 6 2.2 Land Use in the New York portion of the LIS Watershed ............................................................. 7 2.2.1 Urban .................................................................................................................................. 10 2.2.2 Agricultural .......................................................................................................................... 11 2.2.3 Forested .............................................................................................................................. 11 3 Drivers of Changes of Nitrogen Load from Nonpoint Sources ........................................................... 11 3.1 Land Cover Changes in the NYS Portion of the LIS Watershed ................................................... 12 3.1.1 Bronx ................................................................................................................................... 12 3.1.2 Northern Long Island .......................................................................................................... 13 3.2 Population/Demographics .......................................................................................................... 13 3.2.1 Westchester County ............................................................................................................ 14 3.2.2 The Bronx ............................................................................................................................ 14 3.2.3 New York County................................................................................................................. 15 3.2.4 Kings County ........................................................................................................................ 15 3.2.5 Queens County .................................................................................................................... 15 3.2.6 Nassau County .................................................................................................................... 16 3.2.7 Suffolk County ..................................................................................................................... 16 3.3 Golf Courses ................................................................................................................................ 17 3.4 Residential Fertilizer Use ............................................................................................................ 19 3.4.1 NYS Nutrient Runoff Law .................................................................................................... 19 3.4.2 Nassau County Fertilizer Law – Local Law No 11-2009 ....................................................... 19 3.4.3 Suffolk County local law (41-2007) ..................................................................................... 19 3.4.4 Westchester County 2009 Lawn Fertilizer Law ................................................................... 19 3.5 Septic Systems ............................................................................................................................ 20 Page i 3.5.1 Regulations .......................................................................................................................... 21 3.6 Number of Cars ........................................................................................................................... 22 3.7 Number of Airports ..................................................................................................................... 22 3.8 Seaports ...................................................................................................................................... 22 4 Regulated Stormwater and Other Permitted Programs .................................................................... 23 4.1 SPDES Phase I MS4 Permit .......................................................................................................... 23 4.1.1 General Program Information ............................................................................................. 23 4.1.2 Description of Nitrogen Control Requirements .................................................................. 24 Inspections and Cleaning ............................................................................................................................ 27 Hood Replacement ..................................................................................................................................... 27 Catch Basin Retrofitting, Repair, and Reconstruction ................................................................................ 27 Floatables Containment and Capture ......................................................................................................... 28 4.1.3 Estimated Effectiveness of Nitrogen Controls or General Measures ................................. 29 4.1.4 Relative Change in Scope and Effectiveness of Program from 1990 to 2012 ..................... 30 4.2 SPDES Phase II MS4 Permit (GP-0-10-002) ................................................................................. 30 4.2.1 General Program Information ............................................................................................. 30 4.2.2 Description of Nitrogen Control Requirements .................................................................. 31 4.2.3 Estimated Effectiveness of Nitrogen Controls or General Measures ................................. 32 4.2.4 Relative Change in Scope and Effectiveness of Program from 1990 to 2012 ..................... 42 4.3 Stormwater from Construction Activity General Permit (GP-0-10-001)..................................... 43 4.3.1 General Program Information ............................................................................................. 43 4.3.2 Description of Nitrogen Control Requirements .................................................................. 43 4.3.3 Estimated Effectiveness of Nitrogen Controls or General Measures ................................. 44 4.3.4 Relative Change in Scope and Effectiveness of Program from 1990 to 2012 ..................... 44 4.4 SPDES Phase II Multi Sector General Permit (MSGP) for Stormwater Discharges associated with Industrial Activity (GP-0-12-001) ............................................................................................................ 44 4.4.1 General Program Information ............................................................................................. 44 4.4.2 Description of Nitrogen Control Requirements .................................................................. 45 4.4.3 Estimated Effectiveness of Nitrogen Controls or General Measures ................................. 46 4.4.4 Relative Change in Scope and Effectiveness of Program from 1990 to 2012 ..................... 46 4.5 NYS Environmental Conservation Law & Clean Water Act General Permit for Concentrated Animal Feeding Operations (CAFOs) (GP-0-09-001) ............................................................................... 46 Page ii 4.5.1 General Program Information ............................................................................................. 46 4.5.2 Description of Nitrogen Control Requirements .................................................................. 47 4.5.3 Estimated Effectiveness of Nitrogen Controls or General Measures ................................. 47 4.5.4 Relative Change in Scope and Effectiveness of Program from 1990 to 2012 ..................... 47 4.6 Clean Water Act General Permit for Concentrated Animal Feeding Operations (CAFOs) (GP-04- 02) 48 4.6.1 General Program Information ............................................................................................. 48 4.6.2 Description of Nitrogen Control Requirements .................................................................. 48 4.6.3 Estimated Effectiveness of Nitrogen Controls or General Measures ................................. 48 4.6.4 Relative Change in Scope and Effectiveness of Program from 1990 to 2012 ..................... 49 4.7 SPDES General Permit for Private, Commercial or Institutional (PCI) Facilities discharging 1,000 to 10,000 gallons per day of sanitary wastewater to groundwater (GP-0-05-001) ............................... 49 4.7.1 General Program Information ............................................................................................