# Determination of Attainment of the 1-Hour Ozone National Ambient Air Quality Standard in the Southeast Desert Nonattainment Area in California
> **Rule** · Final rule. · Published 2015-04-15 · Effective 2015-05-15 · 80 FR 20166
## Document
- **Document number:** 2015-08582
- **Category:** air-emissions
- **Federal Register citation:** 80 FR 20166
- **CFR reference:** 40 CFR 52
- **Publication date:** 2015-04-15
- **Effective date:** 2015-05-15
- **State:** CA
- **EPA docket:** EPA-R09-OAR-2014-0612
## Abstract

The Environmental Protection Agency (EPA) is determining that the Southeast Desert nonattainment area has attained the 1-hour ozone National Ambient Air Quality Standard. This determination is based on complete, quality-assured, and certified data for the most recent three-year period (2011-2013). Preliminary data available through December 2014 are consistent with continued attainment.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2015/04/15/2015-08582/determination-of-attainment-of-the-1-hour-ozone-national-ambient-air-quality-standard-in-the)
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