Revisions to the California State Implementation Plan, El Dorado Air Pollution Control District

EPA is taking direct final action to approve a revision to the El Dorado County Air Pollution Control District's (EDCAPCD) portion of the California State Implementation Plan (SIP). The action consists of incorporating a revised version of Rule 523, New Source Review, into the SIP. The intended effect of approving Rule 523 is to regulate air pollution in accordance with the requirements of the Clean Air Act, as amended in 1990 (CAA or the Act). Rule 523 consists of definitions of all terms relating to new sources and modifications to existing sources of air pollution, source permitting requirements, including applicability, major source definitions, offsets, increment analysis, and Lowest Achievable Emission Rate (LAER)/Best Available Control Technology (BACT). EPA is finalizing the approval of Rule 523 into the California SIP under provisions of the CAA regarding EPA action on SIP submittals, SIPs for national primary and secondary ambient air quality standards and plan requirements for nonattainment areas.