Approval and Promulgation of Air Quality Implementation Plans; Arizona; Nonattainment Plan for the Miami SO2 Nonattainment Area

The Environmental Protection Agency (EPA) is approving an Arizona state implementation plan (SIP) revision for attaining the 2010 1-hour sulfur dioxide (SO<INF>2</INF>) primary national ambient air quality standard (NAAQS or "standard") for the Miami, Arizona SO<INF>2</INF> nonattainment area (NAA). This SIP revision (hereinafter called the "Miami SO<INF>2</INF> Plan" or "Plan") includes Arizona's attainment demonstration and other elements required under the Clean Air Act (CAA or "Act"). In addition to an attainment demonstration, the Plan addresses the requirements for meeting reasonable further progress toward attainment of the NAAQS, reasonably available control measures and reasonably available control technology, base-year and projected emission inventories, enforceable emissions limitations and control measures, and contingency measures. The EPA concludes that the Plan provides for attainment of the 2010 1-hour primary SO<INF>2</INF> NAAQS in the Miami SO<INF>2</INF> NAA by the attainment date of October 4, 2018, and meets the other applicable requirements under the CAA.