# Air Plan Approval; Texas; Dallas-Fort Worth Area Redesignation and Maintenance Plan for Revoked Ozone National Ambient Air Quality Standards
> **Rule** · Final rule. · Published 2020-04-06 · Effective 2020-05-06 · 85 FR 19096
## Document
- **Document number:** 2020-06198
- **Category:** air-emissions
- **Federal Register citation:** 85 FR 19096
- **CFR reference:** 40 CFR 52
- **Publication date:** 2020-04-06
- **Effective date:** 2020-05-06
- **State:** TX
- **EPA docket:** EPA-R06-OAR-2019-0213
## Abstract

Pursuant to the Federal Clean Air Act (CAA or the Act), the Environmental Protection Agency (EPA or Agency) is approving revisions to the Texas State Implementation Plan (SIP) that pertain to the Dallas-Fort Worth (DFW) area and the 1979 1-hour and 1997 8-hour ozone National Ambient Air Quality Standards (NAAQS or standard). The EPA is approving the plan for maintaining the 1-hour and 1997 ozone NAAQS through the year 2032 in the DFW area. The EPA is determining that the DFW area continues to attain the 1979 1-hour and 1997 8-hour ozone NAAQS and has met the five CAA criteria for redesignation. Therefore, the EPA is terminating all anti-backsliding obligations for the DFW area for the 1-hour and 1997 ozone NAAQS.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2020/04/06/2020-06198/air-plan-approval-texas-dallas-fort-worth-area-redesignation-and-maintenance-plan-for-revoked-ozone)
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