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

요약

EPA is proposing to take direct final action approving a State Implementation Plan (SIP) revision submitted by the State of Colorado. On October 15, 2003, the Governor of Colorado submitted a revised maintenance plan for the Denver-Boulder metropolitan (hereafter, Denver) carbon monoxide (CO) maintenance area for the CO National Ambient Air Quality Standard (NAAQS). The revised maintenance plan also contained a revised transportation conformity budget for the year 2013. EPA is proposing approval of the Denver CO revised maintenance plan and revised transportation conformity budget. This action is being taken under section 110 of the Clean Air Act. In the "Rules and Regulations" section of this Federal Register, EPA is approving the State's SIP revision as a direct final rule without prior proposal because the Agency views this as a noncontroversial SIP revision and anticipates no adverse comments. A detailed rationale for the approval is set forth in the preamble to the direct final rule. If EPA receives no adverse comments, EPA will not take further action on this proposed rule. If EPA receives adverse comments, EPA will withdraw the direct final rule and it will not take effect.