Approval and Promulgation of Implementation Plans; Texas; Post 1996 Rate-of-Progress Plan, Adjustments to the 1990 Base Year Emissions Inventory, and Motor Vehicle Emissions Budgets for the Dallas/Fort Worth Ozone Nonattainment Area

EPA is approving a State Implementation Plan (SIP) revision for the State of Texas. This revision includes the Post 1996 Rate-of- Progress (ROP) plan, adjustments to the 1990 base year emissions inventory, and ROP Motor Vehicle Emissions Budgets for the Dallas/Fort Worth (DFW) ozone nonattainment area. This plan shows planned emission reductions required by the Clean Air Act (Act) from 1996 to 1999 to improve air quality in the Dallas/Fort Worth Area. The reductions are from the 1990 base year emissions inventory. The adjustments to the 1990 base year emissions inventory improve that inventory. The Motor Vehicle Emissions Budgets are used for determining conformity of transportation projects to the SIP. This action satisfies the Act's requirements for a serious ozone nonattainment area's Post 1996 Rate- of-Progress requirements and approves the Motor Vehicle Emissions Budgets under the Rate-of-Progress Plan.