Documents containing case studies on NPDES Watershed-Based Permitting.
You will need Adobe Reader to view some of the files on this page. See EPA’s About PDF page to learn more.- Case Study 1 - General Permit for Nitrogen Dischargers in Long Island Sound: Final Permit (Revised March 2008) (PDF)(6 pp, 1 MB)
- Case Study 2 - Sand Creek Watershed, Colorado: Watershed-Based Selenium Standard (Revised July 2007) (PDF)(5 pp, 1 MB)
- Case Study 3 - Michigan Statewide Stormwater Permitting: Statewide Watershed-based MS4 Stormwater General Permit (Revised July 2007) (PDF)(9 pp, 1 MB)
- Case Study 4 - Tualatin River Watershed, Oregon: Clean Water Services Integrated Municipal Permit (Revised July 2007) (PDF)(8 pp, 1 MB)
- Case Study 5 - Rahr Malting Company: Final Permit (Revised December 2009) (PDF)(5 pp, 1 MB)
- Case Study 6 - Northern Kentucky Sanitation District No. 1: Permitting Approach (PDF)(3 pp, 38 K)
- Case Study 7 - Industrial Stormwater Discharges from Dredging at Marinas in Lake Tahoe (PDF)(2 pp, 1 MB)
- Case Study 8 - Construction Stormwater Discharges from Land Disturbance in Lake Tahoe (PDF)(2 pp, 1 MB)
- Case Study 9 - Waste Discharge Requirements for South Lake Tahoe, El Dorado County and Placer County (PDF)(2 pp, 1 MB)
- Case Study 10 - Louisville and Jefferson County Metropolitan Sewer District (MSD) (PDF)(3 pp, 103 K)
- Case Study 11 - Neuse River Watershed, North Carolina: Neuse River Compliance Association Watershed-Based Permit (Revised July 2007) (PDF)(6 pp, 1 MB)
- Case Study 12 - Big Darby Creek Watershed, Ohio: Construction Watershed-Based General Permit (PDF)(6 pp, 1 MB)
- Case Study 13 - Chesapeake Bay Watershed, Virginia: Watershed-based General Permit for Nutrient Discharges and Nutrient Trading (July 2007) (PDF)(7 pp, 1 MB)
- Case Study 14 - Lake Lewisville Watershed, Texas: City of Denton Watershed Protection Program (July 2007) (PDF)(4 pp, 1 MB)
- Case Study 15 - North Carolina Statewide Approach: Basinwide Planning and Permitting (Revised December 2009) (PDF)(4 pp, 987 K)
- Case Study 16 - Cherry Creek Reservoir Drainage Basin, Colorado: Municipal Separate Sewer Systems, Phase II Stormwater Permit (PDF)(8 pp, 1 MB)
- Case Study 17 - Cache la Poudre River, Colorado (December 2009) (PDF)(6 pp, 1 MB)
- Case Study 18 - Tennessee Statewide Approach: Watershed Management Approach (December 2009) (PDF)(6 pp, 1 MB)