# Clean Air Act Finding of Attainment; California-Imperial Valley Planning Area; Particulate Matter of 10 Microns or Less (PM-10)
> **Rule** · Final rule. · Published 2001-10-19 · Effective 2001-11-19 · 66 FR 53106
## Document
- **Document number:** 01-26406
- **Category:** air-emissions
- **Federal Register citation:** 66 FR 53106
- **CFR reference:** 40 CFR 81
- **Publication date:** 2001-10-19
- **Effective date:** 2001-11-19
- **State:** CA
- **EPA docket:** CA058-FOA
## Abstract

EPA is taking final action to find that the State of California has established to EPA's satisfaction that the Imperial Valley Planning Area (Imperial County), a PM-10 moderate nonattainment area, would have attained the national ambient air quality standards (NAAQS) for particulate matter of ten microns or less (PM-10) by the applicable Clean Air Act (CAA or the Act) attainment date, December 31, 1994, but for emissions emanating from outside the United States, i.e., Mexico. As a result of this final action, Imperial County will not be subject to a finding of failure to attain and reclassification to serious at this time and will remain a moderate PM-10 nonattainment area.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2001/10/19/01-26406/clean-air-act-finding-of-attainment-california-imperial-valley-planning-area-particulate-matter-of)
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