Approval of Air Quality Implementation Plans; Ohio and West Virginia; Attainment Plans for the Steubenville, Ohio-West Virginia 2010 Sulfur Dioxide Nonattainment Area

The Environmental Protection Agency (EPA) is approving, under the Clean Air Act (CAA), two State Implementation Plan (SIP) revision submittals, submitted by Ohio and West Virginia, respectively. The Ohio and West Virginia submittals include each State's attainment demonstration for the Steubenville Ohio-West Virginia sulfur dioxide (SO<INF>2</INF>) nonattainment area (hereinafter "Steubenville Area" or "Area"). Each SIP contains an attainment demonstration, enforceable emission limits, control measures and other elements required under the CAA to address the nonattainment area requirements for the Steubenville Area. EPA concludes that the Ohio and West Virginia attainment plan submittals demonstrate that the provisions in the respective SIPs provide for attainment of the 2010 primary SO<INF>2</INF> national ambient air quality standard (NAAQS) in the entire Steubenville Area and meet the requirements of the CAA. EPA is also approving into the West Virginia SIP new emissions limits, operational restrictions, and associated compliance requirements for Mountain State Carbon, and approving into the Ohio SIP the limits on emissions from Mingo Junction Energy Center, JSW Steel, and the Cardinal Power Plant.