Approval and Promulgation of Air Quality Implementation Plans; District of Columbia; The 2002 Base Year Emissions Inventory for the Washington DC-MD-VA Nonattainment Area for the 1997 Fine Particulate Matter National Ambient Air Quality Standard

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EPA is approving the fine particulate matter (PM 2.5 ) 2002 base year emissions inventory portion of the District of Columbia State Implementation Plan (SIP) revision submitted by the District of Columbia, through the District Department of the Environment (DDOE), on April 2, 2008. The emissions inventory is part of the April 2, 2008 SIP revision that was submitted to meet nonattainment requirements related to the District of Columbia's portion of the Washington DC-MD-VA nonattainment area (hereafter referred to as DC Area or Area) for the 1997 PM 2.5 National Ambient Air Quality Standard (NAAQS) SIP. EPA is approving the 2002 base year PM 2.5 emissions inventory in accordance with the requirements of the Clean Air Act (CAA).