# Air Plan Approval; West Virginia; Regional Haze State Implementation Plan for the Second Implementation Period
> **Rule** · Final rule. · Published 2025-07-07 · Effective 2025-08-06 · 90 FR 29737
## Document
- **Document number:** 2025-12527
- **Category:** air-emissions
- **Federal Register citation:** 90 FR 29737
- **CFR reference:** 40 CFR 52
- **Publication date:** 2025-07-07
- **Effective date:** 2025-08-06
- **State:** VA
- **EPA docket:** EPA-R03-OAR-2025-0174
## Abstract

The Environmental Protection Agency (EPA) is approving the regional haze State implementation plan (SIP) revision submitted by West Virginia (West Virginia, WV, or the State) on August 12, 2022, to address applicable requirements under the Clean Air Act (CAA) and the EPA's Regional Haze Rule (RHR) for the regional haze program's second implementation period. The EPA is taking this action pursuant to the CAA.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2025/07/07/2025-12527/air-plan-approval-west-virginia-regional-haze-state-implementation-plan-for-the-second)
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