# Air Plan Approval; Oklahoma; Updates to the General SIP and Incorporation by Reference Provisions
> **Rule** · Final rule. · Published 2022-08-16 · Effective 2022-09-15 · 87 FR 50263
## Document
- **Document number:** 2022-17241
- **Category:** air-emissions
- **Federal Register citation:** 87 FR 50263
- **CFR reference:** 40 CFR 52
- **Publication date:** 2022-08-16
- **Effective date:** 2022-09-15
- **State:** OK
- **EPA docket:** EPA-R06-OAR-2021-0621
## Abstract

Pursuant to the Federal Clean Air Act (CAA or the Act), the Environmental Protection Agency (EPA) is approving identified portions of two revisions to the Oklahoma State Implementation Plan (SIP) submitted by the State of Oklahoma designee on May 15, 2020, and February 9, 2021. This action addresses revisions to the Oklahoma SIP pertaining to the general SIP definitions under Oklahoma Administrative Code (OAC) Title 252, Chapter 100, Subchapter 1, Section 1-3, and revisions to the Oklahoma SIP to update the incorporation by reference of Federal requirements under OAC Title 252, Chapter 100, Subchapter 2, and Appendix Q.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2022/08/16/2022-17241/air-plan-approval-oklahoma-updates-to-the-general-sip-and-incorporation-by-reference-provisions)
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