# Air Plan Approval; West Virginia; 2020 Amendments to West Virginia's Ambient Air Quality Standards
> **Rule** · Final rule. · Published 2021-09-23 · 86 FR 52837
## Document
- **Document number:** 2021-20322
- **Category:** air-emissions
- **Federal Register citation:** 86 FR 52837
- **CFR reference:** 40 CFR 52
- **Publication date:** 2021-09-23
- **State:** VA
- **EPA docket:** EPA-R03-OAR-2020-0487
## Abstract

The Environmental Protection Agency (EPA) is approving a state implementation plan (SIP) revision submitted by the State of West Virginia. This revision updates West Virginia's incorporation by reference of EPA's national ambient air quality standards (NAAQS) and the associated monitoring reference and equivalent methods. This action is being taken under the Clean Air Act (CAA).

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2021/09/23/2021-20322/air-plan-approval-west-virginia-2020-amendments-to-west-virginias-ambient-air-quality-standards)
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