Abstract - Annual Renewal of Interlocal Agreement between Town of Hillsborough and Orange County for Stormwater Program Management and Erosion Control Services

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12 Town of Hillsborough Stormwater Management Program Work Plan September 2010 INTRODUCTION - In 1972, the National Pollutant Discharge Elimination System (NPDES) program was established under the authority of the Federal Clean Water Act. Phase t of the NPDES Stormwater program was established in 1990. It required NPDES permit coverage for municipalities with populations of 100,000 or more. Phase 11 of the NPDES Stormwater program was signed into law in December 1999. The Phase I! program extended permit coverage to smaller (< 100,000 pop.) communities and public entities that own or operate a municipal separate storm sewer system (MS4). (t required these smaller communities to develop a stormwater program and. obtain an NPDES permit for Stormwater discharges. In North Carolina, the Department of Environment and Natural Resources, Division of Water Quality (NCDWQ) .administers the NPDES Stormwater program. NCDWQ issued the Town of Hillsborough's (Town) initial Phase 11 permit, on October 1, 2005. The permit required the Town to develop, implement, and enforce a stomzwater program designed to reduce the discharge of pollutants from the MS4 to the maximum extent practicable_ The program was implemented in phases over the last five years. Pursuant to the permit the stormwater program included the following six minimum measures or best management practices (BMPs): - 1. Public education and outreach on Stormwater impacts; Z. Public involvementlparticipation; 3. Illicit discharge detection and elimination; 4. Construction site Stormwater runoff control (Erosion Control); 5. Post-construction Stormwater management for new .deveEopment and redevelopment; 6. Pollution preventioNgood housekeeping for municipal operations. Recognizing the need for assistance and the benefits of collaboration, the Town entered into an inter-local agreement with Orange County (County) in March 2006. Under this agreement, the County provided the Town witty services to implement the Town's Stormwater Program pursuant to their NPDES Phase II Stormwater permit. The County was already implementing a similar program required under the Neuse River Basin rules (including education, post-construction stomrwater, and illicit discharge requirements), as welt as a locally delegated erosion control program. This agreement not only benefited the Town, but also benefited the County by essentially implementing one program that satisfies both the Town's Phase II stormwater requirements and the County's Neuse River Basin stormwater program requirements. By collaborating, both entities satisfied requirements more economically. . The Town's Stormwater Program operates as a division of the Public Works Department. The Assistant Town Manager oversees the program and works closely with the County stormwater staff. The stormwater program is implemented by Orange County's Erosion Control Division. - •n-.-.. in _r~~r