Approval and Promulgation of Air Quality Implementation Plans; West Virginia; Prevention of Significant Deterioration and Approval of Infrastructure State Implementation Plans for Specific National Ambient Air Quality Standards

The Environmental Protection Agency (EPA) is approving a State Implementation Plan (SIP) revision submitted by the West Virginia Department of Environmental Protection (WVDEP) for the State of West Virginia on June 3, 2015. This revision pertains to West Virginia's Prevention of Significant Deterioration (PSD) permit program regulations for preconstruction permitting requirements for major sources. The revision includes a change in West Virginia's PSD regulations related to emissions of fine particulate matter (PM2.5). The State's June 3, 2015 submittal satisfies its obligations pursuant to an earlier rulemaking in which EPA granted final conditional approval of West Virginia's PSD implementing regulations. This action also addresses specific infrastructure program elements specified in Clean Air Act (CAA) section 110(a)(2) necessary to implement, maintain, and enforce several national ambient air quality standards (NAAQS). This action is being taken under the CAA.