The State Water Resources Control Board (State Water Board) will be holding public workshops on August 19, August 28, and September 18, 2019 to provide information regarding the recently adopted Industrial General Permit (IGP). An unofficial draft of the newly adopted IGP can be found here. The IGP serves as a permit for industrial facilities state wide to allow storm water discharge from industrial facilities. The original IGP was adopted in April of 2014 and included a clause to reopen the permit to address Total Maximum Daily Load (TMDLs) in the future.
The proposed amendments include the implementation of TMDLs, sufficiently sensitive test methods, and alternative compliance options. The TMDLs will apply to certain facilities located in the San Francisco Bay, Santa Ana, Los Angeles, and San Diego Regional Water Quality Control Boards. In order for the TMDLs to apply, the permitted facility must be a potential source of the listed receiving water impairment. For reference, TMDL implementation information can be found in Attachment E of the proposed IGP, which incorporates a federal requirement for facilities to use analytical test methods that are sensitive enough to analyze the appropriate pollutants and parameters. The additional alternative compliance options can be found in Attachment I of the proposed IGP. The rule changes are scheduled to go into effect on July 1, 2020. Facilities should review whether the proposed TMDLs would apply and prepare for additional testing, best management practices, and control options.