# Approval and Promulgation of Air Quality Implementation Plans; West Virginia; 2018 Amendments to West Virginia's Ambient Air Quality Standards
> **Rule** · Final rule. · Published 2018-10-05 · Effective 2018-11-05 · 83 FR 50271
## Document
- **Document number:** 2018-21664
- **Category:** air-emissions
- **Federal Register citation:** 83 FR 50271
- **CFR reference:** 40 CFR 52
- **Publication date:** 2018-10-05
- **Effective date:** 2018-11-05
- **State:** VA
- **EPA docket:** EPA-R03-OAR-2018-0550
## Abstract

The Environmental Protection Agency (EPA) is approving a state implementation plan (SIP) revision submitted by the State of West Virginia. This revision updates the effective date by which the state incorporates by reference the national ambient air quality standards (NAAQS) as well as their monitoring reference and equivalent methods. EPA is approving this revision to the West Virginia SIP in accordance with the requirements of the Clean Air Act (CAA).

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2018/10/05/2018-21664/approval-and-promulgation-of-air-quality-implementation-plans-west-virginia-2018-amendments-to-west)
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