Approval and Promulgation of Air Quality Implementation Plans; State of Colorado; Denver Early Action Compact Ozone Plan, Attainment Demonstration of the 8-Hour Ozone Standard, and Approval of Related Revisions

On May 17, 2005, EPA published a notice of proposed rulemaking (NPR) to propose approval of Colorado's Early Action Compact (EAC) ozone plan for the Denver metropolitan area (hereafter, Denver area) for the 8-hour ozone National Ambient Air Quality Standard (NAAQS). In that NPR, EPA proposed to approve the Denver area's EAC ozone plan, an attainment demonstration for the 8-hour ozone NAAQS, revisions to Colorado's Common Provisions Regulation, revisions to Colorado's Regulation No. 7 "Emissions of Volatile Organic Compounds" (hereafter, Regulation No. 7), and revisions to Colorado's Regulation No. 11 "Motor Vehicle Emissions Inspection Program" (hereafter Regulation No. 11). In this action, EPA is approving the Denver EAC ozone plan, the associated attainment demonstration, and the revisions to the Common Provisions Regulation, Regulation No. 7, and Regulation No. 11. This action is being taken under section 110 of the Clean Air Act.