# Air Plan Approval; Ohio; Second Maintenance Plan for the Ohio Portion of the Campbell-Clermont, KY-OH SO2 Maintenance Area
> **Rule** · Direct final rule. · Published 2025-07-16 · Effective 2025-09-15 · 90 FR 31872
## Document
- **Document number:** 2025-13344
- **Category:** air-emissions
- **Federal Register citation:** 90 FR 31872
- **CFR reference:** 40 CFR 52
- **Publication date:** 2025-07-16
- **Effective date:** 2025-09-15
- **State:** OH
- **EPA docket:** EPA-R05-OAR-2024-0542
## Abstract

The Environmental Protection Agency (EPA) is approving, under the Clean Air Act (CAA), the second 10-year maintenance plan submitted to EPA on November 7, 2024, by the Ohio Environmental Protection Agency (Ohio EPA) for the Ohio portion of the Campbell-Clermont Counties, Kentucky-Ohio maintenance area. The Ohio portion of this area consists of Pierce Township in Clermont County, Ohio. The plan addresses the second 10-year maintenance period for the 2010 sulfur dioxide (SO<INF>2</INF>) National Ambient Air Quality Standards (NAAQS). EPA is approving Ohio EPA's submittal for the area because it provides for the continued maintenance of the 2010 SO<INF>2</INF> NAAQS through the end of the second 10-year portion of the maintenance period.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2025/07/16/2025-13344/air-plan-approval-ohio-second-maintenance-plan-for-the-ohio-portion-of-the-campbell-clermont-ky-oh)
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