Approval and Promulgation of Air Quality Implementation Plans; Texas; Revisions to Chapter 117 and Emission Inventories for the Dallas/Fort Worth 8-Hour Ozone Nonattainment Area

The EPA is approving portions of revisions to the State Implementation Plan (SIP) submitted by the State of Texas on May 13, 2005, to meet the 5% Increment of Progress (IOP) requirement for the Dallas/Fort Worth (DFW) nonattainment area. EPA is not taking action on the 5% IOP plan in this rulemaking. EPA is approving the 2002 base year inventory for the DFW 8-hour ozone nonattainment area. EPA is also approving emissions reductions from energy efficiency measures implemented within the DFW 8-hour ozone nonattainment area, and revisions to 30 TAC, Chapter 117, Control of Air Pollution From Nitrogen Compounds, concerning stationary reciprocating internal combustion (IC) engines operating within the DFW 8-hour ozone nonattainment area. EPA is also approving into the SIP a federal consent decree and subsequent amendments thereto concerning the Alcoa Rockdale plant in Milam County. These actions result in emissions reductions in the DFW 8-hour ozone nonattainment area and are taken in accordance with section 110 and part D of the Clean Air Act (the Act) and EPA's regulations.