# Approval and Promulgation of State Implementation Plans: State of Washington
> **Rule** · Final rule. · Published 1997-09-22 · Effective 1997-10-22 · 62 FR 49442
## Document
- **Document number:** 97-24420
- **Category:** air-emissions
- **Federal Register citation:** 62 FR 49442
- **CFR reference:** 40 CFR 52
- **Publication date:** 1997-09-22
- **Effective date:** 1997-10-22
- **State:** WA
- **EPA docket:** WA 13-6-6121
## Abstract

The Environmental Protection Agency (EPA) is approving parts of four revisions to the Washington State Implementation Plan (SIP) which were submitted by the Washington Department of Ecology (Washington) on January 22, 1993; September 14, 1993; and April 30, 1996 (two revisions), to address the attainment of the National Ambient Air Quality Standard (NAAQS) for carbon monoxide (CO) in the Spokane, Washington urbanized area. In addition, EPA is deferring action on several parts of the SIP revisions and not addressing other parts in this action because they have been superseded by subsequent revisions and were or will be addressed in separate actions. The SIP revisions were submitted by Washington to satisfy certain Federal requirements for an approvable nonattainment area CO SIP for the Spokane nonattainment area in the State of Washington.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/1997/09/22/97-24420/approval-and-promulgation-of-state-implementation-plans-state-of-washington)
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