Revisions to the Arizona State Implementation Plan, Maricopa County Environmental Services Department; Revisions to the California State Implementation Plan, South Coast Air Quality Management District; Disapproval of State Implementation Plan Revisions, Monterey Bay Unified Air Pollution Control District

EPA is finalizing approval of revisions to the Maricopa County Environmental Services Department (MCESD) portion of the Arizona State Implementation Plan (SIP) and revisions to the South Coast Air Quality Management District (SCAQMD) portion of the California SIP. The revisions for MCESD were proposed in the Federal Register on September 30, 2004, and concern volatile organic compound (VOC) emissions from solvent cleaning. The revisions for SCAQMD were proposed in the Federal Register on September 14, 2004, and concern oxides of nitrogen (NO<INF>X</INF>) and oxides of sulfur (SO<INF>X</INF>) emissions from facilities emitting 4 tons or more per year of NO<INF>X</INF> and/or SO<INF>X</INF> under the SCAQMD Regional Clean Air Incentives Market (RECLAIM). We are approving local rules that regulate these emission sources under the Clean Air Act as amended in 1990 (CAA or the Act). EPA is also finalizing disapproval of a revision to the Monterey Bay Unified Air Pollution Control District (MBUAPCD) portion of the California State Implementation Plan (SIP). This action was proposed in the Federal Register on June 1, 2004, and concerns excess emissions during breakdown. There are no sanctions associated with this disapproval.