On November 6, 2018, the State Water Resources Control Board adopted an amendment to the National Pollutant Discharge Elimination System General Permit for Storm Water Discharges Associated with Industrial Activities (General Permit). The General Permit Amendment addresses the implementation of previously-adopted Total Maximum Daily Loads (TMDLs), the new federal Sufficiently Sensitive Methods Rule, and statewide Compliance Options. These changes take effect on July 1, 2020.