Approval and Promulgation of Implementation Plans; California State Implementation Plan Revision; South Coast Air Quality Management District

EPA is taking direct final action to approve revisions to the California State Implementation Plan (SIP) which concern the control of particulate matter (PM) emissions. The revisions amend Rules 403 and 1186 adopted by the South Coast Air Quality Management District (SCAQMD). The intended effect of these SIP revisions is to regulate PM emissions in accordance with the requirements of the Clean Air Act, as amended in 1990 (CAA or the Act). This action will incorporate these rules into the Federally approved SIP. EPA is finalizing the approval of these revisions 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.