The NY SPDES General Permit for Stormwater Discharges from Municipal Separate Stormwater Sewer Systems (GP-0-15-003) requires operators of Municipal Separate Storm Sewer Systems (MS4s)* to develop, implement, and enforce a Stormwater Management Program (SWMP) designed to reduce the discharge of pollutants from storm sewer systems.
Six Minimum Control Measures
SWMPs must include six minimum control measures. For each of these six minimum measures, MS4s must identify measurable goals and select and implement management practices to achieve those measurable goals. The six minimum measures are:
- Public Education and Outreach
- Public Involvement and Participation
- Illicit Discharge Detection and Elimination
- Construction Site Runoff Control
- Post-Construction Runoff Control
- Pollution Prevention and Good Housekeeping
The SWMP must be fully developed and implemented within five years of the issuance date of the permit: January 8, 2008.
The links to the left summarize each minimum measure and outline the required measures and some activities and/or practices that can be used to fulfill the minimum measure.
*(MS4s) are municipalities and municipal entities located in geographic areas that meet certain population and environmental criteria are regulated under the Phase II SPDES General Permit. For more information about the designation of MS4s in New York State see the NYSDEC document entitled Designation Criteria for Identifying Regulated Municipal Separate Storm Sewer Systems (MS4s).