Approval and Promulgation of Implementation Plans; Texas; Reasonably Available Control Technology for the 1997 8-Hour Ozone National Ambient Air Quality Standard

The Environmental Protection Agency (EPA) is finalizing its proposal to approve revisions to the Texas State Implementation Plan (SIP) for the Houston/Galveston/Brazoria (HGB) and Dallas Fort Worth (DFW) 1997 8-Hour ozone nonattainment areas. The HGB area consists of Brazoria, Chambers, Fort Bend, Galveston, Harris, Liberty, Montgomery and Waller counties. The DFW area consists of Collin, Dallas, Denton, Ellis, Johnson, Kaufman, Parker, Rockwall, and Tarrant counties. Specifically, we are approving portions of multiple revisions to the Texas SIP submitted by the Texas Commission on Environmental Quality (TCEQ) as meeting Reasonably Available Control Technology (RACT) requirements. The RACT requirements apply to sources of Volatile Organic Compounds (VOC) and Oxides of Nitrogen (NOx) in these areas. This action is in accordance with the federal Clean Air Act (the Act, CAA).