# Designation of Areas for Air Quality Planning Purposes; California; Ventura Ozone Nonattainment Area; Reclassification to Serious
> **Rule** · Final rule. · Published 2008-05-20 · Effective 2008-06-19 · 73 FR 29073
## Document
- **Document number:** E8-11294
- **Category:** air-emissions
- **Federal Register citation:** 73 FR 29073
- **CFR reference:** 40 CFR 81
- **Publication date:** 2008-05-20
- **Effective date:** 2008-06-19
- **State:** CA
- **EPA docket:** EPA-R09-OAR-2008-0435
## Abstract

Effective June 15, 2004, EPA classified the Ventura County ozone nonattainment area as "subpart 2/moderate" for the 8-hour ozone standard with an attainment date of no later than June 15, 2010. On February 14, 2008, the California Air Resources Board submitted a request for reclassification of the Ventura County ozone nonattainment area from "moderate" to "serious." Under section 181(b)(3) of the Clean Air Act, EPA is granting California's request for voluntary reclassification of the Ventura County ozone nonattainment area to "serious" in today's document.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2008/05/20/E8-11294/designation-of-areas-for-air-quality-planning-purposes-california-ventura-ozone-nonattainment-area)
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