# 2026-03887: Connecticut's Ozone Plan Gets EPA Thumbs-Up Routine

2026-03887, Air Plan Approval; Connecticut; State Implementation Plan Revisions Required as a Result of a Definition Change Due to the Ozone Reclassification, is a Federal Register rule from Environmental Protection Agency published 2026-02-26, effective 2026-03-30; PRIA reads it as touching household money (as of 2026-06-11).

- Canonical: https://policyrisk.com/federal-register/2026-03887
- As of: 2026-06-11
- Plain-text twin of the page above; the HTML and this file carry the same facts.

## Facts
- Document number: 2026-03887
- Title: Air Plan Approval; Connecticut; State Implementation Plan Revisions Required as a Result of a Definition Change Due to the Ozone Reclassification
- Type: Rule
- Agencies: Environmental Protection Agency
- Citation: 91 FR 9455
- Published: 2026-02-26
- Effective: 2026-03-30
- Comments close: not stated
- Significant: no
- Touches household money: yes
- Regulation identifier numbers: none
- Last updated: 2026-06-11

## In one line

Connecticut's Ozone Plan Gets EPA Thumbs-Up Routine

## Summary

The EPA is giving a thumbs-up to Connecticut’s updated air plan that adjusts rules because the ozone pollution level got reclassified as more serious. This means some businesses in Connecticut now have new deadlines to follow cleaner air rules starting March 30, 2026. It’s all about keeping the air fresh and safe without any surprise costs announced yet.

## Abstract

The Environmental Protection Agency (EPA) is approving a State Implementation Plan (SIP) revision submitted by the State of Connecticut. This action consists of revisions to Regulations of Connecticut State Agencies (RCSA) sections 22a-174-22e and 22a-174-22f, primarily to add compliance dates for sources brought into the applicability of these sections due to a change in the definition of "severe non-attainment area for ozone." The definition change had previously been approved into Connecticut's SIP. This action is being taken in accordance with the Clean Air Act.

## Effects PRIA read

- Connecticut Businesses Get New NOX Deadlines: cost, medium. If you operate a facility in Connecticut that was newly brought under the state's "severe non-attainment area for ozone" definition, the EPA approved revisions to RCSA sections 22a-174-22e and 22a-174-22f that add compliance dates for those sources. The state rules were adopted November 13, 2023, t…

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## Sources
- [2026-03887 on federalregister.gov](https://www.federalregister.gov/documents/2026/02/26/2026-03887/air-plan-approval-connecticut-state-implementation-plan-revisions-required-as-a-result-of-a)
- [2026-03887 as published (PDF)](https://www.govinfo.gov/content/pkg/FR-2026-02-26/pdf/2026-03887.pdf)

## Related
- [Previous: 2026-03883, Endangered and Threatened Wildlife and Plants; Removal of Northern and Southern…](https://policyrisk.com/federal-register/2026-03883)
- [Next: 2026-03888, Air Plan Approval; Missouri; Reporting Emission Data, Emission Fees, and Proces…](https://policyrisk.com/federal-register/2026-03888)
- [All Federal Register documents](https://policyrisk.com/federal-register)

Source: PRIA, https://policyrisk.com/federal-register/2026-03887 (as of 2026-06-11).