# Air Plan Approval; Guam; Guam Environmental Protection Agency; New Source Review
> **Rule** · Final rule. · Published 2025-09-18 · Effective 2025-10-20 · 90 FR 44987
## Document
- **Document number:** 2025-18062
- **Category:** air-emissions
- **Federal Register citation:** 90 FR 44987
- **CFR reference:** 40 CFR 52
- **Publication date:** 2025-09-18
- **Effective date:** 2025-10-20
- **EPA docket:** EPA-R09-OAR-2025-0216
## Abstract

The Environmental Protection Agency (EPA) is finalizing an approval of a revision to the Guam state implementation plan (SIP). This revision governs the Guam Environmental Protection Agency's (GEPA) issuance of permits for stationary sources and focuses on the preconstruction review and permitting of major sources and major modifications under the Clean Air Act (CAA or "the Act").

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2025/09/18/2025-18062/air-plan-approval-guam-guam-environmental-protection-agency-new-source-review)
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