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I 7A- REPORT To the Honorable Mayor and City Council From the City Manager December 15, 2003 Subject Municipal Stormwater National Pollution Discharge Elimination System (NPDES) Permit and San Mateo Countywide Stormwater Management Plan for 2004 -2009. Recommendation (1) Continue the Public Hearing opened on December 8, 2004. (2) Adopt a Resolution authorizing the City /County Association of Governments (C /CAG) to apply for re- issuance of the Municipal Stormwater National Pollution Discharge Elimination System (NPDES) Permit, on behalf of Redwood City and (3) Accept and adopt the San Mateo Countywide Stormwater Management Plan for 2004 -2009 Background The Environmental Protection Agency, under amendments to the 1987 Clean Water Act, imposed regulations that mandate local government to control and reduce the amount of _ stormwater pollution runoff into receiving waters of the United States. Under the authority of the Porter - Cologne Water Quality Act, the State Water Resources Control Board has delegated authority to its regional boards to invoke permitting requirements. In July 1991, the San Francisco Bay Regional Water Quality Control Board (RWQCB) notified San Mateo County and all its incorporated cities of the requirement to submit a Municipal National Pollutant Discharge Elimination System (NPDES) Stormwater Permit application and to implement a Stormwater Management Plan (Plan). Under the authority of C /CAG, all of the municipalities in San Mateo County submitted an NPDES permit application, including a Stormwater Management Plan, which met the San Francisco Bay RWQCB requirements. The RWQCB adopted a municipal stormwater NPDES permit CAS 0029921 and Waste Discharge Requirements for all of the municipalities in San Mateo County on September 15, 1993, which remained in effect for five years. There have been three renewals and one amendment of NPDES permit CAS 0029921 since the initial permit issuance in September 1993. In July 2003, the RWQCB reopened the existing municipal stormwater NPDES permit CAS 0029921 and Wastewater Discharge Requirements for all municipalities in San Mateo County to include revised new development and erosion control language and adopted a revised municipal stormwater NPDES permit CA0029921. The latest adopted NPDES permit requires that all of the municipalities in San Mateo County again reapply for reissuance of their municipal stormwater NPDES permit by January 23, 2004.