Approval and Promulgation of State Implementation Plans; California State Implementation Plan Revision; Bay Area Air Quality Management District

EPA is taking direct final action on revisions to the California State Implementation Plan. The revisions concern rules from the Bay Area Air Quality Management District (BAAQMD). This approval action will incorporate five rules into the Federally approved SIP. The intended effect of approving these rules is to regulate emissions of oxides of nitrogen (NO<INF>X) in accordance with the requirements of the Clean Air Act, as amended in 1990 (CAA or the Act). The rules control NO<INF>X emissions from boilers, steam generators, process heaters, stationary internal combustion engines, stationary gas turbines, and glass melting furnaces in the San Francisco Bay area. EPA has evaluated the rules and is taking direct final action to approve them under provisions of the CAA regarding EPA actions on SIP submittals, and SIPs for national primary and secondary ambient air quality standards. The rules are being approved into the SIP in accordance with the area's ozone maintenance plan for redesignation to attainment.