Approval and Promulgation of Air Quality Implementation Plans; State of Colorado; Colorado Springs Revised Carbon Monoxide Maintenance Plan and Approval of Related Revisions

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EPA is taking direct final action approving a State Implementation Plan (SIP) revision submitted by the State of Colorado. On April 12, 2004, the Governor of Colorado submitted a revised maintenance plan for the Colorado Springs carbon monoxide (CO) maintenance area for the CO National Ambient Air Quality Standard (NAAQS). The revised maintenance plan contains a revised transportation conformity budget for the year 2010 and beyond. In addition, the Governor submitted revisions to Colorado's Regulation No. 11 "Motor Vehicle Emissions Inspection Program." In this action, EPA is approving the Colorado Springs CO revised maintenance plan, revised transportation conformity budget, and the revisions to Regulation No. 11. This action is being taken under section 110 of the Clean Air Act.