# Approval of California Air Plan Revisions, Western Mojave Desert, Rate of Progress Demonstration
> **Rule** · Final rule. · Published 2017-06-23 · Effective 2017-07-24 · 82 FR 28560
## Document
- **Document number:** 2017-12966
- **Category:** air-emissions
- **Federal Register citation:** 82 FR 28560
- **CFR reference:** 40 CFR 52
- **Publication date:** 2017-06-23
- **Effective date:** 2017-07-24
- **State:** CA
- **EPA docket:** EPA-R09-OAR-2017-0028
## Abstract

The Environmental Protection Agency (EPA) is approving a state implementation plan revision submitted by the State of California to meet Clean Air Act requirements applicable to the Western Mojave Desert ozone nonattainment area. Specifically, the EPA is approving the initial six-year 15 percent rate of progress demonstration to address requirements for the 1997 8-hour ozone national ambient air quality standards.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2017/06/23/2017-12966/approval-of-california-air-plan-revisions-western-mojave-desert-rate-of-progress-demonstration)
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