# Air Plan Approval; OR; Updates to Materials Incorporated by Reference
> **Rule** · Final rule; administrative change. · Published 2022-12-20 · Effective 2022-12-20 · 87 FR 77720
## Document
- **Document number:** 2022-27490
- **Category:** other
- **Federal Register citation:** 87 FR 77720
- **CFR reference:** 40 CFR 52
- **Publication date:** 2022-12-20
- **Effective date:** 2022-12-20
- **EPA docket:** EPA-R10-OAR-2022-0740
## Abstract

The Environmental Protection Agency (EPA) is updating the regulatory materials incorporated by reference into the Oregon State Implementation Plan (SIP). The regulations addressed in this action were previously submitted by the Oregon Department of Environmental Quality (ODEQ) and approved by the EPA in prior rulemakings. In this action, the EPA is also notifying the public of corrections to typographical errors, and minor formatting changes to the incorporation by reference tables. This update affects the SIP materials that are available for public inspection at the National Archives and Records Administration and the EPA Regional Office.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2022/12/20/2022-27490/air-plan-approval-or-updates-to-materials-incorporated-by-reference)
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