The Environmental Protection Agency (EPA) is approving a limited maintenance plan submitted by the State of New Mexico, dated November 1, 2013, for the Grant County maintenance area for the 1971 sulfur dioxide (SO<INF>2</INF>) National Ambient Air Quality Standard (NAAQS). New Mexico submitted this limited maintenance plan to fulfill the second 10-year maintenance plan requirement, under section 175A(b) of the Clean Air Act (CAA or the Act), to ensure maintenance of the 1971 SO<INF>2</INF> NAAQS through 2025. The EPA is approving the maintenance plan pursuant to the CAA.