# Approval and Promulgation of Implementation Plans and Designation of Areas for Air Quality Planning Purposes; 1-Hour Ozone Standard for San Diego, CA
> **Rule** · Final rule. · Published 2003-06-26 · Effective 2003-07-28 · 68 FR 37976
## Document
- **Document number:** 03-16029
- **Category:** air-emissions
- **Federal Register citation:** 68 FR 37976
- **CFR reference:** 40 CFR 52
- **Publication date:** 2003-06-26
- **Effective date:** 2003-07-28
- **EPA docket:** CA-282-0389
## Abstract

EPA is taking final action to redesignate the San Diego County area to attainment for the 1-hour ozone National Ambient Air Quality Standard (NAAQS). EPA is also approving a 1-hour ozone maintenance plan and motor vehicle emissions budgets as revisions to the San Diego portion of the California State Implementation Plan (SIP).

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2003/06/26/03-16029/approval-and-promulgation-of-implementation-plans-and-designation-of-areas-for-air-quality-planning)
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