# Air Plan Approval; Oklahoma; Updates to the State Implementation Plan Incorporation by Reference Provisions
> **Rule** · Final rule. · Published 2024-03-01 · Effective 2024-04-01 · 89 FR 15031
## Document
- **Document number:** 2024-04103
- **Category:** air-emissions
- **Federal Register citation:** 89 FR 15031
- **CFR reference:** 40 CFR 52
- **Publication date:** 2024-03-01
- **Effective date:** 2024-04-01
- **State:** OK
- **EPA docket:** EPA-R06-OAR-2022-0279
## Abstract

Pursuant to the Federal Clean Air Act (CAA or the Act), the Environmental Protection Agency (EPA) is approving revisions to the Oklahoma State Implementation Plan (SIP) submitted by the State of Oklahoma designee on December 17, 2021, and January 20, 2023. This action addresses the submittal of revisions to the Oklahoma SIP to update the incorporation by reference provision of Federal requirements under Oklahoma Administrative Code (OAC).

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2024/03/01/2024-04103/air-plan-approval-oklahoma-updates-to-the-state-implementation-plan-incorporation-by-reference)
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