# Air Plan Approval; North Carolina; Minor Revisions to Nitrogen Oxides Rule
> **Rule** · Final rule. · Published 2023-01-13 · Effective 2023-02-13 · 88 FR 2243
## Document
- **Document number:** 2022-28658
- **Category:** air-emissions
- **Federal Register citation:** 88 FR 2243
- **CFR reference:** 40 CFR 52
- **Publication date:** 2023-01-13
- **Effective date:** 2023-02-13
- **State:** NC
- **EPA docket:** EPA-R04-OAR-2022-0433
## Abstract

The Environmental Protection Agency (EPA) is finalizing the approval of a revision to the North Carolina State Implementation Plan (SIP) submitted by the North Carolina Department of Environmental Quality (NCDEQ), Division of Air Quality, via a letter dated April 13, 2021, and received by EPA on April 14, 2021. This revision contains minor clarifying and typographical edits to North Carolina's nitrogen oxides (NO<INF>X</INF>) rule. EPA is approving these changes pursuant to the Clean Air Act (CAA or Act).

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2023/01/13/2022-28658/air-plan-approval-north-carolina-minor-revisions-to-nitrogen-oxides-rule)
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