Approval and Promulgation of Air Quality Implementation Plans; West Virginia; Regional Haze Plan and Visibility Requirements for the 2010 Sulfur Dioxide and the 2012 Fine Particulate Matter Standards

The Environmental Protection Agency (EPA) is approving a state implementation plan (SIP) revision submitted by the State of West Virginia (West Virginia). This SIP revision changes West Virginia's reliance on the Clean Air Interstate Rule (CAIR) to reliance on the Cross-State Air Pollution Rule (CSAPR) with the purpose of addressing certain regional haze requirements and the visibility protection requirements for the 2010 sulfur dioxide (SO2) national ambient air quality standards (NAAQS). EPA is approving this SIP revision and consequently converting the Agency's prior limited approval/limited disapproval of West Virginia's regional haze SIP revision to a full approval and withdrawing the federal implementation plan (FIP) provisions for addressing our prior limited disapproval. Based on our full approval of West Virginia's regional haze program, EPA is also approving the portions of West Virginia's infrastructure SIP revisions for the 2010 SO2 and 2012 fine particulate matter (PM2.5) NAAQS addressing visibility protection requirements. This action is being taken under the Clean Air Act (CAA).