# Approval and Promulgation of Air Quality Implementation Plans; West Virginia; Ambient Air Quality Standard for Carbon Monoxide and Ozone
> **Rule** · Direct final rule. · Published 2002-10-07 · Effective 2002-12-06 · 67 FR 62381
## Document
- **Document number:** 02-25283
- **Category:** air-emissions
- **Federal Register citation:** 67 FR 62381
- **CFR reference:** 40 CFR 52
- **Publication date:** 2002-10-07
- **Effective date:** 2002-12-06
- **State:** VA
- **EPA docket:** WV052-6023a
## Abstract

EPA is taking direct final action to approve revisions to the West Virginia State Implementation Plan (SIP). This revision establishes reference test methods for measuring carbon monoxide concentrations in the ambient air, equivalent to the national primary and secondary ambient air quality standards established by EPA. EPA is approving this revision to the SIP in accordance with the Clean Air Act.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2002/10/07/02-25283/approval-and-promulgation-of-air-quality-implementation-plans-west-virginia-ambient-air-quality)
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