NPDES Phase II General Permit Information

A Storm Water Management Program (SWMP) to comply with the General Permit for the Discharge of Storm Water from Small Municipal Separate Storm Sewer Systems (Small MS4 Permit) was submitted by Marin County Stormwater Pollution Prevention Program (MCSTOPPP). The SWMP describes the program to be implemented in Marin County.

The SWMP has been reviewed by Regional Water Quality Control Board (RWQCB) staff and meets the Maximum Extent Practicable (MEP) standard. The permit coverage under the Small MS4 Permit for the MCSTOPPP program commenced on March 30, 2004.

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View Current Phase II General Permit. View Additional Information on the existing permit.

The current Phase II Small MS4 General Permit is in the process of being renewed (see most recent update for local municipalities). Information on the new Draft Permit and Additional Information can be viewed on the State Water Resources Control Board's Phase II Permit webpage.

Marin County Stormwater Pollution Prevention Program: P. O. Box 4186 San Rafael, CA 94913-4186 Phone (415) 499-6528, Fax (415) 499-7221, e-mail: mcstoppp@co.marin.ca.us