Approval and Promulgation of Air Quality State Implementation Plans (SIP); Texas: Administrative Orders Issued to Airport Operators and Airlines Regarding Control of Pollution From Ground Support Equipment (GSE) for the Houston/Galveston (HGA) Ozone Nonattainment Area and a Non-Road Large Spark-Ignition Engine Rule for the HGA and Dallas/Fort Worth (DFW) Ozone Nonattainment Areas

The EPA is approving a State Implementation Plan (SIP) revision submitted by the State of Texas. This rule making covers two separate actions. The EPA is approving: Administrative Orders and Memoranda of Agreement (MOA) requiring owners and operators at major airports in the HGA area to implement reductions in oxides of nitrogen (NO<INF>X</INF>) emissions for sources under their control, primarily GSE; and a rule requiring that non-road large spark-ignition engines of 25 horsepower (hp) or larger in all counties of the State of Texas conform to requirements identical to Title 13 of the California Code of Regulations, Chapter 9. This rule includes the HGA and DFW ozone nonattainment areas. This new rule and the orders will contribute to attainment of the ozone standard in the HGA and DFW ozone nonattainment areas. The EPA is approving these revisions to the Texas SIP to regulate emissions of NO<INF>X</INF> in accordance with the requirements of the Federal Clean Air Act (the Act).