The EPA is approving revisions to the State Implementation Plan (SIP) submitted by the Governor of New Mexico on December 16, 2004. The revisions will incorporate the Early Action Compact (EAC) Clean Air Action Plan (CAAP) into the New Mexico SIP. EPA is approving the photochemical modeling in support of the attainment demonstration for the 8-hour ozone standard within the San Juan County EAC area. These actions strengthen the SIP in accordance with the requirements of sections 110 and 116 of the Federal Clean Air Act (the Act), and will result in emission reductions needed to help ensure continued attainment and maintenance of the 8-hour National Ambient Air Quality Standard (NAAQS) for ozone.