# Approval and Promulgation of Implementation Plans and Designation of Areas; California-Indian Wells Valley PM-10 Nonattainment Area
> **Rule** · Final rule. · Published 2003-05-07 · Effective 2003-06-06 · 68 FR 24368
## Document
- **Document number:** 03-7640
- **Category:** air-emissions
- **Federal Register citation:** 68 FR 24368
- **CFR reference:** 40 CFR 52
- **Publication date:** 2003-05-07
- **Effective date:** 2003-06-06
- **State:** CA
- **EPA docket:** CA-276-0380
## Abstract

EPA is finalizing approval pursuant to the Clean Air Act (CAA or the Act) of the moderate area plan and maintenance plan for the Indian Wells Valley planning area in California and redesignating the area from nonattainment to attainment for the National Ambient Air Quality Standards (NAAQS) for particulate matter with an aerodynamic diameter less than or equal to a nominal 10 micrometers (PM-10).

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2003/05/07/03-7640/approval-and-promulgation-of-implementation-plans-and-designation-of-areas-california-indian-wells)
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