# Approval and Promulgation of Implementation Plans; Designation of Areas for Air Quality Planning Purposes; California; South Coast Air Basin; Approval of PM10 Maintenance Plan and Redesignation to Attainment for the PM10 Standard
> **Rule** · Final rule. · Published 2013-06-26 · Effective 2013-07-26 · 78 FR 38223
## Document
- **Document number:** 2013-15145
- **Category:** air-emissions
- **Federal Register citation:** 78 FR 38223
- **CFR reference:** 40 CFR 52
- **Publication date:** 2013-06-26
- **Effective date:** 2013-07-26
- **State:** CA
- **EPA docket:** EPA-R09-OAR-2013-0007
## Abstract

EPA is approving, as a revision to the California State implementation plan (SIP), the State's request to redesignate the Los Angeles-South Coast Air Basin (South Coast) to attainment for the 24- hour particulate matter of ten microns or less (PM<INF>10</INF>) national ambient air quality standard (NAAQS). EPA is also approving the PM<INF>10</INF> maintenance plan and the associated PM<INF>10</INF> motor vehicle emissions budgets for use in transportation conformity determinations necessary for the South Coast PM<INF>10</INF> area. Finally, EPA is approving the attainment year emissions inventory. EPA is taking these actions because the SIP revision meets the requirements of the Clean Air Act (CAA) and EPA guidance for such plans and motor vehicle emissions budgets.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2013/06/26/2013-15145/approval-and-promulgation-of-implementation-plans-designation-of-areas-for-air-quality-planning)
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