Approval of the Redesignation Request for the Washington, DC-MD-VA 2008 8-Hour Ozone National Ambient Air Quality Standard Nonattainment Area

The Environmental Protection Agency (EPA) is approving the request from the District of Columbia (the District) to redesignate to attainment their respective portion of the Washington, DC-MD-VA nonattainment area (hereafter "the Washington Area" or "the Area") for the 2008 8-hour ozone national ambient air quality standard (NAAQS or standard) (also referred to as the "2008 ozone NAAQS") as the District's portion of the Area meets the statutory requirements for redesignation under the Clean Air Act (CAA). EPA is therefore redesignating the District of Columbia to attainment for the 2008 ozone NAAQS in accordance with the CAA.