# Clean Air Act Redesignation and Reclassification, Searles Valley Nonattainment Area; Designation of Coso Junction, Indian Wells Valley, and Trona Nonattainment Areas; California; Determination of Attainment of the PM-10 Standards for the Coso Junction Area; Particulate Matter of 10 microns or less (PM-10)
> **Rule** · Final rule. · Published 2002-08-06 · 67 FR 50805
## Document
- **Document number:** 02-19798
- **Category:** air-emissions
- **Federal Register citation:** 67 FR 50805
- **CFR reference:** 40 CFR 81
- **Publication date:** 2002-08-06
- **State:** CA
- **EPA docket:** CA-034-FIN
## Abstract

EPA is changing the boundaries of the Searles Valley, California moderate PM-10 nonattainment area (NA) by dividing that area into three new, separate moderate NAs: Coso Junction, Indian Wells Valley, and Trona. EPA is also finding that the Trona NA has attained the 24-hour and annual PM-10 national ambient air quality standards (NAAQS) by the Clean Air Act (CAA) mandated attainment date for moderate nonattainment areas.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2002/08/06/02-19798/clean-air-act-redesignation-and-reclassification-searles-valley-nonattainment-area-designation-of)
---
*AI Analytics · CC0 1.0*