# Air Plan Approval; Ohio; Nitrogen Oxide Standards Rules
> **Rule** · Direct final rule. · Published 2024-12-30 · Effective 2025-02-28 · 89 FR 106330
## Document
- **Document number:** 2024-30734
- **Category:** air-emissions
- **Federal Register citation:** 89 FR 106330
- **CFR reference:** 40 CFR 52
- **Publication date:** 2024-12-30
- **Effective date:** 2025-02-28
- **State:** OH
- **EPA docket:** EPA-R05-OAR-2024-0529
## Abstract

The Environmental Protection Agency (EPA) is approving revisions to the Ohio State Implementation Plan (SIP) submitted by the Ohio Environmental Protection Agency (Ohio EPA) on November 4, 2024. Ohio EPA requested that EPA approve the revised rules for nitrogen oxide standards in the Ohio Administrative Code (OAC) into Ohio's SIP. The revised rules include non-substantive updates to rule language and updates to referenced material. The revisions will assist with Ohio's efforts to attain and maintain the National Ambient Air Quality Standards (NAAQS) for nitrogen dioxide (NO<INF>2</INF>).

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2024/12/30/2024-30734/air-plan-approval-ohio-nitrogen-oxide-standards-rules)
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