The Environmental Protection Agency (EPA) is approving a Texas State Implementation (SIP) revision for control of volatile organic compound (VOC) emissions from storage tanks. The revision implements additional controls in the Dallas-Fort Worth 1997 ozone nonattainment area (DFW area); modifies control requirements in the DFW area, the Houston-Galveston-Brazoria ozone nonattainment area (HGB area), the Beaumont-Port Arthur area (BPA area) and El Paso, Gregg, Nueces and Victoria Counties; and makes non-substantive changes to VOC control provisions that apply in Aransas, Bexar, Calhoun, Matagorda, San Patricio and Travis Counties. In addition, EPA finds that the SIP revision implements serious area reasonable available control technology (RACT) controls for the VOC storage source category in the DFW area and continues to implement severe area RACT for this source category in the HGB area as required by the Clean Air Act (CAA).