# Approval and Promulgation of Air Quality Implementation Plans; Virginia; Revised Ambient Air Quality Standards for Fine Particulate Matter
> **Rule** · Direct final rule. · Published 2013-10-25 · Effective 2013-12-24 · 78 FR 63878
## Document
- **Document number:** 2013-25043
- **Category:** air-emissions
- **Federal Register citation:** 78 FR 63878
- **CFR reference:** 40 CFR 52
- **Publication date:** 2013-10-25
- **Effective date:** 2013-12-24
- **State:** VA
- **EPA docket:** EPA-R03-OAR-2013-0594
## Abstract

EPA is taking direct final action to approve revisions to the Commonwealth of Virginia State Implementation Plan (SIP). The revisions add ambient air quality standards and associated reference conditions for Fine Particulate Matter (PM<INF>2.5</INF>) that are consistent with the 2013 National Ambient Air Quality Standards (NAAQS) for PM<INF>2.5</INF>. EPA is approving these revisions in accordance with the requirements of the Clean Air Act (CAA).

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2013/10/25/2013-25043/approval-and-promulgation-of-air-quality-implementation-plans-virginia-revised-ambient-air-quality)
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