For the current listing cycle, the State Water Board has combined its 303(d) List and the 305(b) Report into the 2012 California Integrated Report. Only the 303(d) List portion of the 2012 California Integrated Report requires approval by the State Water Board and U.S. EPA.
The 303(d) List is a compilation of the 303(d) lists from the Regional Water Quality Control Boards (Regional Water Boards) for the North Coast (Region 1), Lahontan (Region 6), and Colorado River (Region 7) regions. The 303(d) List also includes State Water Board staff recommendations for additions, deletions, or changes to the 303(d) Lists from those three regions.
After approval of the 303(d) List portion of the California Integrated Report by the State Water Board, the complete California Integrated Report was be submitted to U.S. EPA. U.S. EPA partially approved the 303(d) List portion of the California Integrated Report on June 26, 2015. U.S. EPA added Topaz Lake to the California 303(d) List prior to final approval on July 30, 2015. The 305(b) portion of the California Integrated Report requires no approval by the State Water Board or U.S. EPA.