# Approval and Promulgation of Implementation Plans; Designation of Areas for Air Quality Planning Purposes; State of California; Ozone; Nitrogen Dioxide; Technical Amendments
> **Rule** · Final rule; technical amendments. · Published 2012-03-21 · Effective 2012-03-21 · 77 FR 16447
## Document
- **Document number:** 2012-6562
- **Category:** air-emissions
- **Federal Register citation:** 77 FR 16447
- **CFR reference:** 40 CFR 81
- **Publication date:** 2012-03-21
- **Effective date:** 2012-03-21
- **State:** CA
- **EPA docket:** EPA-R09-OAR-2012-0189
## Abstract

EPA is making technical amendments to the Code of Federal Regulations (CFR) to reflect the final actions published by the Agency on October 7, 2003, April 30, 2004, and May 5, 2010 in connection with the designations and classifications of certain areas in California for the 1971 annual nitrogen dioxide standard and the 1997 eight-hour ozone standard pursuant to the Clean Air Act. The areas that are the subject of these technical amendments include Riverside County, Western Mojave Desert, South Coast Air Basin, Eastern Kern County, and San Diego County.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2012/03/21/2012-6562/approval-and-promulgation-of-implementation-plans-designation-of-areas-for-air-quality-planning)
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