The State Water Resources Control Board (“Water Board”) is now receiving public comments on certain components of its revised proposed statewide National Pollutant Discharge Elimination System (“NPDES”) Construction Stormwater General Permit (“Construction Stormwater General Permit”).
The first draft Construction Stormwater General Permit was released by the Water Board on May 28, 2021, following Staff’s preliminary draft released in November 2020 and consideration of public comments raised in public workshops held in December 2020. A revised proposed draft Construction Stormwater General Permit was released on March 30, 2022. Water Board Staff is now accepting comments on the following items in the revised draft Permit:
- Anti-degradation findings set forth in Order, Findings 9-18;
- Regulatory transition requirements set forth in Order, Section III.C;
- Sediment-based numeric effluent limitations for 14 pollutants as set forth in total maximum daily load (“TMDL”) implementation requirements in Attachment H section I.G.5, and the Fact Sheet sections I.G.5.g and I.W.6.g; and
- Nitrogen-based nutrient numeric action levels for the Los Angeles Area Lakes TMDL, the Los Angeles River Nutrients TMDL, the Santa Clara River Nitrogen Compounds TMDL, and the Ventura River Algae TMDL in Table H-2 of Attachment H, and in Fact Sheet sections I.G.5.d and I.W.6.d.