# Approval and Promulgation of Air Quality Implementation Plans; Virginia; Revision to the Classification and Implementation of the 2008 Ozone National Ambient Air Quality Standards for the Northern Virginia Nonattainment Area
> **Rule** · Direct final rule. · Published 2013-06-11 · Effective 2013-08-12 · 78 FR 34915
## Document
- **Document number:** 2013-13727
- **Category:** air-emissions
- **Federal Register citation:** 78 FR 34915
- **CFR reference:** 40 CFR 52
- **Publication date:** 2013-06-11
- **Effective date:** 2013-08-12
- **State:** VA
- **EPA docket:** EPA-R03-OAR-2013-0289
## Abstract

EPA is taking direct final action to approve revisions to the Virginia State Implementation Plan (SIP). The revisions consist of two amendments: an amendment to the list of nonattainment areas; and an amendment to the 1997 National Ambient Air Quality Standards (NAAQS) for ozone for purposes of transportation conformity. EPA is approving these revisions to include the classification of Northern Virginia as "marginal" for the 2008 ozone NAAQS, and to revoke the 1997 ozone NAAQS for the purposes of transportation conformity as established by the EPA in accordance with the requirements of the Clean Air Act (CAA).

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2013/06/11/2013-13727/approval-and-promulgation-of-air-quality-implementation-plans-virginia-revision-to-the)
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