# Approval and Promulgation of State Implementation Plans: Oregon
> **Rule** · — · Published 2014-01-22 · 79 FR 3507
## Document
- **Document number:** 2014-01283
- **Category:** other
- **Federal Register citation:** 79 FR 3507
- **CFR reference:** 40 CFR 52
- **Publication date:** 2014-01-22
- **State:** OR
## Source
- [Federal Register document](https://www.federalregister.gov/documents/2014/01/22/2014-01283/approval-and-promulgation-of-state-implementation-plans-oregon)
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