# Approval and Promulgation of State Implementation Plans: Washington; Spokane Carbon Monoxide Nonattainment Area; Designation of Areas for Air Quality Planning Purposes
> **Rule** · Direct final rule. · Published 2005-06-29 · Effective 2005-08-29 · 70 FR 37269
## Document
- **Document number:** 05-12713
- **Category:** air-emissions
- **Federal Register citation:** 70 FR 37269
- **CFR reference:** 40 CFR 52
- **Publication date:** 2005-06-29
- **Effective date:** 2005-08-29
- **State:** WA
- **EPA docket:** Docket ID No. R10-OAR-2005-WA-0001
## Abstract

On November 29, 2004, the State of Washington submitted a carbon monoxide (CO) maintenance plan for the Spokane serious nonattainment area to EPA for approval. The State concurrently requested that EPA redesignate the Spokane CO serious nonattainment area to attainment for the National Ambient Air Quality Standard (NAAQS) for CO. In this action, EPA is approving the maintenance plan and redesignating the Spokane serious CO nonattainment area to attainment.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2005/06/29/05-12713/approval-and-promulgation-of-state-implementation-plans-washington-spokane-carbon-monoxide)
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