# Approval and Promulgation of Implementation Plans; Idaho
> **Rule** · Final rule. · Published 2015-04-07 · Effective 2015-05-07 · 80 FR 18526
## Document
- **Document number:** 2015-07821
- **Category:** air-emissions
- **Federal Register citation:** 80 FR 18526
- **CFR reference:** 40 CFR 52
- **Publication date:** 2015-04-07
- **Effective date:** 2015-05-07
- **State:** ID
- **EPA docket:** EPA-R10-OAR-2014-0477
## Abstract

The Environmental Protection Agency (EPA) is taking final action to partially approve the May 22, 2014, State Implementation Plan (SIP) submittal from Idaho to revise the SIP to update the incorporation by reference of Federal air quality regulations into the SIP. The EPA is also taking final action to partially disapprove Idaho's incorporation by reference of certain provisions of the Federal prevention of significant deterioration (PSD) permitting rules that have been vacated by a Federal Court. As a result of this action, the Idaho SIP is updated to incorporate by reference certain Federal regulations as of July 1, 2013.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2015/04/07/2015-07821/approval-and-promulgation-of-implementation-plans-idaho)
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