State board holds workshop on draft small MS4 permit; key changes include trash rules and alternative compliance option
At an Aug. 19 workshop the board reviewed a formal draft of the small MS4 permit (released July 2). Staff highlighted new trash provisions (two compliance tracks with a Dec. 2030 deadline), an alternative compliance option capturing the 85th-percentile storm, added TMDLs and post-construction verification, and asked for public comment by Sept. 2, 2026.
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The State Water Resources Control Board hosted a public workshop Aug. 19 on a formal draft of the small municipal separate storm sewer system (MS4) general permit, released July 2, 2026. Staff described the draft's major changes from the 2013 permit and asked for written comments by Sept. 2, 2026.
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