# Approval and Promulgation of Implementation Plans; Oklahoma
> **Rule** · Final rule. · Published 2019-08-01 · Effective 2019-09-03 · 84 FR 37579
## Document
- **Document number:** 2019-16229
- **Category:** air-emissions
- **Federal Register citation:** 84 FR 37579
- **CFR reference:** 40 CFR 52
- **Publication date:** 2019-08-01
- **Effective date:** 2019-09-03
- **State:** OK
- **EPA docket:** EPA-R06-OAR-2017-0145
## Abstract

The Environmental Protection Agency (EPA) is approving revisions to the State Implementation Plan (SIP) for Oklahoma as proposed on March 22, 2018, and October 5, 2018. The revisions submitted by Oklahoma were contained in annual SIP updates for 2013, 2014, 2015, and 2016, and incorporate the latest changes to the EPA regulations. The overall intended outcome of this rulemaking is to make the approved Oklahoma SIP consistent with current Federal and State requirements. We are taking this action in accordance with the federal Clean Air Act (CAA, the Act).

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2019/08/01/2019-16229/approval-and-promulgation-of-implementation-plans-oklahoma)
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