Approval and Promulgation of Air Quality Implementation Plans; West Virginia's Redesignation Request and Associated Maintenance Plan of the West Virginia Portion of the Martinsburg-Hagerstown, WV-MD Nonattainment Area for the 1997 Annual Fine Particulate Matter Standard

The Environmental Protection Agency (EPA) is approving the State of West Virginia's request to redesignate to attainment the West Virginia portion of the Martinsburg-Hagerstown, WV-MD nonattainment area (the Martinsburg Area or Area) for the 1997 annual fine particulate matter (PM<INF>2.5</INF>) national ambient air quality standard (NAAQS). EPA is also approving as a revision to the West Virginia State Implementation Plan (SIP) the associated maintenance plan to show maintenance of the 1997 annual PM<INF>2.5</INF> NAAQS through 2025 for the Area. As part of this action, EPA is making a determination that the Martinsburg Area continues to attain the 1997 annual PM<INF>2.5</INF> NAAQS. The maintenance plan includes the 2017 and 2025 PM<INF>2.5</INF> and nitrogen oxides (NO<INF>X</INF>) mobile vehicle emissions budgets (MVEBs) for Berkeley County, West Virginia for the 1997 annual PM<INF>2.5</INF> NAAQS which EPA is approving for transportation conformity purposes. Furthermore, EPA is approving, as a revision to the West Virginia SIP, the 2007 base year emissions inventory for the Area for the 1997 annual PM<INF>2.5</INF> NAAQS. These actions are being taken under the Clean Air Act (CAA).