# Approval and Promulgation of State Implementation Plans: Oregon; Salem Carbon Monoxide Nonattainment Area; Designation of Areas for Air Quality Planning Purposes
> **Rule** · Direct final rule. · Published 2008-12-30 · Effective 2009-03-02 · 73 FR 79655
## Document
- **Document number:** E8-30825
- **Category:** air-emissions
- **Federal Register citation:** 73 FR 79655
- **CFR reference:** 40 CFR 52
- **Publication date:** 2008-12-30
- **Effective date:** 2009-03-02
- **State:** OR
- **EPA docket:** EPA-R10-OAR-2007-0915
## Abstract

EPA is taking direct final action to approve a redesignation request and a State Implementation Plan (SIP) revision submitted by the State of Oregon. On August 9, 2007 the State of Oregon submitted a request to EPA that the Salem carbon monoxide (CO) nonattainment area be redesignated to attainment for the CO National Ambient Air Quality Standard (NAAQS) and concurrently submitted a maintenance plan that provides for continued attainment of the CO NAAQS. The Salem CO nonattainment area has not violated the 8-hour CO NAAQS since 1985.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2008/12/30/E8-30825/approval-and-promulgation-of-state-implementation-plans-oregon-salem-carbon-monoxide-nonattainment)
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