# Approval of Air Quality Implementation Plans; California; Imperial County; Ozone Precursor Emissions Inventories
> **Rule** · Direct final rule. · Published 2014-10-23 · Effective 2014-12-22 · 79 FR 63332
## Document
- **Document number:** 2014-24753
- **Category:** air-emissions
- **Federal Register citation:** 79 FR 63332
- **CFR reference:** 40 CFR 52
- **Publication date:** 2014-10-23
- **Effective date:** 2014-12-22
- **State:** CA
- **EPA docket:** EPA-R09-OAR-2012-0542
## Abstract

The Environmental Protection Agency (EPA) is approving revisions to California's State Implementation Plan (SIP) for Imperial County that address Clean Air Act (CAA) requirements concerning ozone precursor emissions inventories of volatile organic compounds and oxides of nitrogen. These emissions inventories were submitted by California to meet CAA requirements for Imperial County, which was designated as a moderate nonattainment areas under the 1997 8-hour ozone National Ambient Air Quality Standard.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2014/10/23/2014-24753/approval-of-air-quality-implementation-plans-california-imperial-county-ozone-precursor-emissions)
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