Approval and Promulgation of Air Quality Implementation Plans; District of Columbia; Section 110(a)(2) Infrastructure Requirements for the 1997 8-Hour Ozone and the 1997 and 2006 Fine Particulate Matter National Ambient Air Quality Standards

EPA is approving submittals from the District of Columbia (the District) pursuant to the Clean Air Act (CAA or the Act) sections 110(k)(2) and (3). These submittals address the infrastructure elements specified in the CAA section 110(a)(2), necessary to implement, maintain, and enforce the 1997 8-hour ozone and fine particulate matter (PM<INF>2.5</INF>) national ambient air quality standards (NAAQS) and the 2006 PM<INF>2.5</INF> NAAQS. This final rule is limited to the following infrastructure elements which were subject to EPA's completeness findings pursuant to CAA section 110(k)(1) for the 1997 8- hour ozone NAAQS dated March 27, 2008, and the 1997 PM<INF>2.5</INF> NAAQS dated October 22, 2008: 110(a)(2)(A), (B), (C), (D)(ii), (E), (F), (G), (H), (J), (K), (L), and (M).