# Air Plan Approval; Idaho; Update to Materials Incorporated by Reference
> **Rule** · Final rule; administrative change. · Published 2025-06-27 · Effective 2025-06-27 · 90 FR 27470
## Document
- **Document number:** 2025-11824
- **Category:** other
- **Federal Register citation:** 90 FR 27470
- **CFR reference:** 40 CFR 52
- **Publication date:** 2025-06-27
- **Effective date:** 2025-06-27
- **State:** ID
- **EPA docket:** EPA-R10-OAR-2025-0009
## Abstract

The Environmental Protection Agency (EPA) is updating the regulatory materials that are incorporated by reference into the Idaho State Implementation Plan (SIP). The EPA is also notifying the public of corrections and clarifying changes in the Code of Federal Regulations tables that identify the regulatory materials incorporated by reference into the Idaho SIP. This update affects the materials that are available for public inspection at the National Archives and Records Administration and the EPA Region 10 Office.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2025/06/27/2025-11824/air-plan-approval-idaho-update-to-materials-incorporated-by-reference)
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