# Approval and Promulgation of Implementation Plans and Designation of Areas for Air Quality Planning Purposes; State of California; Redesignation of San Diego County to Attainment for the 1997 8-Hour Ozone Standard
> **Rule** · Final rule. · Published 2013-06-04 · Effective 2013-07-05 · 78 FR 33230
## Document
- **Document number:** 2013-13064
- **Category:** air-emissions
- **Federal Register citation:** 78 FR 33230
- **CFR reference:** 40 CFR 52
- **Publication date:** 2013-06-04
- **Effective date:** 2013-07-05
- **State:** CA
- **EPA docket:** EPA-R09-OAR-2012-0971
## Abstract

EPA is approving, as a revision of the California state implementation plan, a request from the California Air Resources Board to redesignate the San Diego County ozone nonattainment area to attainment of the 1997 8-hour ozone National Ambient Air Quality Standard (1997 ozone standard) because the request meets the statutory requirements for redesignation under the Clean Air Act. EPA is also approving the State's plan for maintaining the 1997 ozone standard in San Diego County for ten years beyond redesignation, and the inventories and related motor vehicle emissions budgets within the plan, because they meet the applicable requirements for such plans and budgets.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2013/06/04/2013-13064/approval-and-promulgation-of-implementation-plans-and-designation-of-areas-for-air-quality-planning)
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