Approval and Promulgation of Air Quality Implementation Plans; District of Columbia; 15 Percent Plan for the Metropolitan Washington, D.C. Ozone Nonattainment Area

EPA is granting conditional approval of a State Implementation Plan (SIP) revision submitted by the District of Columbia (the District) to meet the 15 percent reasonable further progress implementation plan (15% plan) requirements of the Clean Air Act (the Act) for the District's portion of the Metropolitan Washington, D.C. ozone nonattainment area. EPA is granting conditional approval because the District's enhanced inspection maintenance (I/M) program, which is one of the many control measures adopted by the District to achieve the 15% reduction in volatile organic compounds (VOC), has only been conditionally approved, the 15% plan must also be conditionally approved. The intended effect of this action is to conditionally approve the 15% plan submitted by the District of Columbia in accordance with the Clean Air Act.