ENVE331-SP10 - Stormwater Lecture

ENVE331-SP10 - Stormwater Lecture - Storm Water...

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Unformatted text preview: Storm Water Construction General Permit Anne Power, Environmental Scientist, CPESC Presentation Outline  Impacts of Storm Water Pollution m Regulatory History/NPDES Overview m Construction General Permit Requirements m Municipal General Permit Requirements m Sediment and Erosion Control BMPs Why are we here? Clean Water. What is storm water pollution? Discharge of polluted runoff, sewage or effluent or of any other liquid, gaseous or solid substance into water. Storm Water Pollution ( including but not limited to) Soil Paint Solvent Fertilizer Plaster Concrete Compounds Asphalt Compounds Detergent Oil and Grease Chemicals Wash Water Where does storm water go? Estuary and delta Rivers Creeks Wetlands Ponds Grassy swales Storm drains A Brief History of National Pollutant Discharge Elimination System (NPDES) Regulation By focusing primarily on the most obvious sources of water pollution, industrial process wastewater discharges and discharges of treated sewage from sewage treatment plants were not eliminated, but were at least brought under regulatory control, and reduced somewhat. The 1972 Amendments to the Clean Water Act prohibit the discharge of ANY pollutant to waters of the United States from a point source unless the discharge is authorized by a National Pollution Discharge Elimination System NPDES permit. Non-point Source Pollution: Phase I 1987 Amendments: regulation of storm water runoff and preparation of non-point source management programs m Phased approach m Phase I (1990 - March 9, 2003) : m Construction (> 5 acres) m Industrial Activities (11 SIC) m Large and Medium Municipalities (> 100,000) Enforcement: Congress U.S. EPA SWRCB RWQCBs SLO: U.S. EPA Region 9, RWQCB Region 3 Phase II  December 8, 1999: Final Rule m Effective March 10, 2003 m Construction (1 to 5 acres) m Industrial Activities (not much change) m Small and Non-traditional Municipalities (< 100,000 / >1,000 per square mile) Construction General Permit Requirements  Submit Notice of Intent (NOI) m Develop a Storm Water Pollution Prevention Plan (SWPPP) m Submit an Annual Report m Submit NOT Vicinity Map Requirements Scaled Drawing 8.5 X 11 or 11 X 17 paper limit Site perimeter Geographic features Site topography North arrow Street names, roads, intersections, landmarks Construction site perimeter SWPPP Objectives...
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ENVE331-SP10 - Stormwater Lecture - Storm Water...

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