Approval and Promulgation of Air Quality Implementation Plans; New Mexico; Infrastructure and Interstate Transport for the 2012 Fine Particulate Matter National Ambient Air Quality Standard and Revised Statutes

The Environmental Protection Agency (EPA) is proposing to approve State Implementation Plan (SIP) revisions submitted by the State of New Mexico to address the requirements of section 110(a)(1) and (2) of the Clean Air Act (CAA or Act) for 2012 fine particulate matter (PM2.5) National Ambient Air Quality Standard (NAAQS). The revisions address how the existing SIP provides for implementation, maintenance, and enforcement of PM2.5 (infrastructure SIP or i-SIP). Under CAA sections 110(a)(1) and 110(a)(2), each state is required to submit a SIP that provides for the implementation, maintenance, and enforcement of a revised primary or secondary NAAQS. CAA section 110(a)(1) and (2) require each state to make a new SIP submission within three years after EPA promulgates a new or revised NAAQS for approval into the existing SIP to assure that the SIP meets the applicable requirements for such new and revised NAAQS. This type of SIP submission is commonly referred to as an ``infrastructure SIP or ``i-SIP.'' We propose approval of this action under Section 110 of the Act. EPA is also proposing to approve a SIP revision to update the New Mexico statutes incorporated into the SIP.