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National Pollutant Discharge Elimination System (NPDES) Stormwater Phase II

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Phone: 203-622-7767

General Information

Human activities have impacted the environment by the creation of impervious surfaces and dispersal of residual pollutants.  These changes have impacted surface water bodies such as lakes, rivers and streams, through increased pollutant loads and changes to natural hydrologic patterns.  Nationwide EPA studies have identified runoff directly related to stormwater as a major contributor to water quality degradation.    

The objective of the Stormwater Management Plan (SWMP) is to develop stormwater pollution mitigation for the Town of Greenwich, Connecticut based on the guidelines established under the Municipal Separate Storm Sewer System (MS4) stormwater management program, the U.S. Environmental Protection Agency’s (EPA) National Pollutant Discharge Elimination System (NPDES) Stormwater Phase II Rule.  This MS4 Phase II program was created with the intention of improving the nation’s waterways by reducing pollutant discharges to surface water bodies from stormwater.

The Connecticut Department of Environmental Protection (CTDEP) locally regulates enforcement of the EPA program through its General Permit for the Discharge of Stormwater from Small MS4s (Permit). The Department of Public Works – Engineering Division has received a Small MS4s Permit. Below are copies of the Stormwater Management Plan and Annual Reports submitted to the Connecticut Department of Environmental Protection (CTDEP).

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