# Approval of Air Quality Implementation Plans; California; San Joaquin Valley; Attainment Plan for the 1997 8-Hour Ozone Standards; Technical Amendments
> **Rule** · Final rule; technical amendments. · Published 2012-12-14 · Effective 2012-12-14 · 77 FR 74355
## Document
- **Document number:** 2012-30245
- **Category:** air-emissions
- **Federal Register citation:** 77 FR 74355
- **CFR reference:** 40 CFR 52
- **Publication date:** 2012-12-14
- **Effective date:** 2012-12-14
- **State:** CA
- **EPA docket:** EPA-R09-OAR-2011-0589
## Abstract

EPA is making a technical amendment to the Code of Federal Regulations (CFR) to reflect the Agency's March 1, 2012 final approval of the California State Implementation Plan for attainment of the 1997 8-hour ozone National Ambient Air Quality Standards in the San Joaquin Valley. This technical amendment corrects the CFR to properly codify the California Air Resources Board's commitment to update the air quality modeling in the San Joaquin Valley 8-Hour Ozone SIP by December 31, 2014.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2012/12/14/2012-30245/approval-of-air-quality-implementation-plans-california-san-joaquin-valley-attainment-plan-for-the)
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