# Approval and Promulgation of State Implementation Plans; State of Washington; Spokane Carbon Monoxide Attainment Plan
> **Rule** · Final rule. · Published 2005-05-12 · Effective 2005-06-13 · 70 FR 24991
## Document
- **Document number:** 05-9400
- **Category:** air-emissions
- **Federal Register citation:** 70 FR 24991
- **CFR reference:** 40 CFR 52
- **Publication date:** 2005-05-12
- **Effective date:** 2005-06-13
- **State:** WA
- **EPA docket:** WA-01-003
## Abstract

The EPA is approving State Implementation Plan (SIP) revisions submitted to EPA by the State of Washington that consist of A Plan for Attaining Carbon Monoxide (CO) National Ambient Air Quality Standards (NAAQS) in the Spokane Serious CO Nonattainment Area and changes to the Washington State Inspection and Maintenance Program. The EPA is also approving certain source-specific SIP revisions relating to Kaiser Aluminum and Chemical Corporation of Spokane.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2005/05/12/05-9400/approval-and-promulgation-of-state-implementation-plans-state-of-washington-spokane-carbon-monoxide)
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