# Air Plan Approval; Connecticut; 2014 and 2017 Periodic Emissions Inventory for 2008 8-Hour Ozone NAAQS
> **Rule** · Final rule. · Published 2025-11-18 · Effective 2025-12-18 · 90 FR 51546
## Document
- **Document number:** 2025-20142
- **Category:** air-emissions
- **Federal Register citation:** 90 FR 51546
- **CFR reference:** 40 CFR 52
- **Publication date:** 2025-11-18
- **Effective date:** 2025-12-18
- **State:** CT
- **EPA docket:** EPA-R01-OAR-2025-0240
## Abstract

The Environmental Protection Agency (EPA) is approving State Implementation Plan (SIP) revisions submitted by the State of Connecticut. These SIP revisions relate to the 2008 8-Hour ozone National Ambient Air Quality Standards (NAAQS). The SIP revisions consist of the following: 2014 and 2017 calendar year periodic emissions inventories. This action is being taken under the Clean Air Act (CAA).

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2025/11/18/2025-20142/air-plan-approval-connecticut-2014-and-2017-periodic-emissions-inventory-for-2008-8-hour-ozone-naaqs)
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