# Air Plan Approval; Connecticut; State Implementation Plan Revisions Required by the 2015 Ozone NAAQS
> **Rule** · Final rule. · Published 2025-04-22 · Effective 2025-05-22 · 90 FR 16814
## Document
- **Document number:** 2025-06610
- **Category:** air-emissions
- **Federal Register citation:** 90 FR 16814
- **CFR reference:** 40 CFR 52
- **Publication date:** 2025-04-22
- **Effective date:** 2025-05-22
- **State:** CT
- **EPA docket:** EPA-R01-OAR-2024-0193
## Abstract

The Environmental Protection Agency (EPA) is approving State Implementation Plan (SIP) revisions submitted by the State of Connecticut for the 2015 ozone National Ambient Air Quality Standard (NAAQS). These revisions certify the adequacy of the SIP to satisfy the nonattainment new source review permitting requirements of the Clean Air Act (CAA) for the reclassification of the Greater Connecticut area to moderate nonattainment for the 2015 ozone NAAQS, and certify the emission statement program satisfies CAA requirements for the initial nonattainment designations and the reclassification to moderate nonattainment for the 2015 ozone NAAQS. This action is being taken in accordance with the CAA.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2025/04/22/2025-06610/air-plan-approval-connecticut-state-implementation-plan-revisions-required-by-the-2015-ozone-naaqs)
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