Approval and Promulgation of Air Quality Implementation Plans; Virginia; Revised 15% Plan for Northern Virginia Portion of the Metropolitan Washington, DC Ozone Nonattainment Area

EPA is converting its conditional interim approval of a State Implementation Plan (SIP) revision submitted by the Commonwealth of Virginia (the "Commonwealth") to a full approval. This revision satisfies the 15 percent rate of progress (ROP) plan (the 15% plan) requirements of the Clean Air Act (the Act) for the Northern Virginia portion of the Metropolitan Washington, DC ozone nonattainment area (the Washington area). The intended effect of this action is to convert the conditional interim approval to a full approval because the Commonwealth has fulfilled the conditions listed in EPA's conditional interim approval of the original 15% plan for the Northern Virginia portion of the Washington area.