# Finding of Attainment for PM10; Wallula PM10 Nonattainment Area, Washington
> **Rule** · Final rule. · Published 2002-10-22 · Effective 2002-11-21 · 67 FR 64815
## Document
- **Document number:** 02-26847
- **Category:** air-emissions
- **Federal Register citation:** 67 FR 64815
- **CFR reference:** 40 CFR 81
- **Publication date:** 2002-10-22
- **Effective date:** 2002-11-21
- **State:** WA
- **EPA docket:** Docket WA-02-001
## Abstract

EPA has determined that the Wallula nonattainment area in Washington has attained the National Ambient Air Quality Standards for particulate matter with an aerodynamic diameter of less than or equal to a nominal ten micrometers as of December 31, 2001, as required by the Clean Air Act.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2002/10/22/02-26847/finding-of-attainment-for-pm10-wallula-pm10-nonattainment-area-washington)
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