Revisions to the California State Implementation Plan; South Coast Air Quality Management District and El Dorado County Air Quality Management District

The Environmental Protection Agency (EPA) is finalizing approval of revisions to the South Coast Air Quality Management District and El Dorado County Air Quality Management District portions of the California State Implementation Plan (SIP). The South Coast action was proposed in the Federal Register on September 13, 2013 and concerns carbon monoxide emissions from cement kilns. The El Dorado County action was proposed in the Federal Register on October 25, 2013 and concerns the District's demonstration that its rules met reasonably available control technology (RACT) requirements under the 1997 8-hour ozone National Ambient Air Quality Standards (NAAQS). We are approving these documents under the Clean Air Act (CAA or the Act).