# 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
> **Rule** · Final rule. · Published 2008-08-15 · Effective 2008-09-15 · 73 FR 47835
## Document
- **Document number:** E8-18835
- **Category:** air-emissions
- **Federal Register citation:** 73 FR 47835
- **CFR reference:** 40 CFR 52
- **Publication date:** 2008-08-15
- **Effective date:** 2008-09-15
- **State:** TX
- **EPA docket:** EPA-R06-OAR-2005-TX-0027
## Abstract

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.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2008/08/15/E8-18835/approval-and-promulgation-of-air-quality-implementation-plans-texas-revisions-to-chapter-117-and)
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