Connecticut's Ozone Plan Gets EPA Thumbs-Up Routine
Published Date: 2/26/2026
Rule
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.
Analyzed Economic Effects
1 provisions identified: 0 benefits, 1 costs, 0 mixed.
Connecticut Businesses Get New NOX Deadlines
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, the new definition was approved into the SIP on February 12, 2024, and the EPA made these revisions federally enforceable effective March 30, 2026.
Your PRIA Score
Personalized for You
How does this regulation affect your finances?
Sign up for a PRIA Policy Scan to see your personalized alignment score for this federal register document and every other regulation we track. We analyze your financial profile against policy provisions to show you exactly what matters to your wallet.
Key Dates
Department and Agencies
Related Federal Register Documents
2026-10086 — Extending the Compliance Deadline for the PFOA and PFOS Maximum Contaminant Levels
The EPA is giving water systems more time to meet safety rules for two harmful chemicals, PFOA and PFOS, by extending the deadline from April 2029 to April 2031 if they ask for it. This helps water providers get ready without rushing, keeping our drinking water safe. The EPA wants your thoughts and will hold a public hearing in July 2026 to hear from everyone.
2026-10085 — Rescission of Regulatory Determinations and Removal of Related Provisions for Four PFAS Substances (PFHxS, PFNA, HFPO-DA (GenX), and the Mixture of These Three PFAS Plus PFBS)
The EPA is proposing to undo its rules for four PFAS chemicals (PFHxS, PFNA, GenX, and a mix including PFBS) in drinking water because the original process wasn’t done right. This means public water systems won’t have to monitor or treat these chemicals for now. People and water providers should weigh in by July 20, 2026, and a virtual hearing happens July 7.
2026-09895 — Effluent Limitations Guidelines and Standards for the Steam Electric Power Generating Point Source Category-Unmanaged Combustion Residual Leachate
The EPA is updating rules for steam electric power plants to better control dirty water leaking from leftover coal waste. This change affects existing power plants and is expected to save up to $1 billion a year while protecting water quality. Comments on the proposal are open until June 17, 2026, so now’s the time to speak up!
2026-09524 — Begin Actual Construction in the New Source Review (NSR) Preconstruction Permitting Program
The EPA is updating rules about when companies can start building big projects that might affect air quality. Now, they can begin building parts that don’t release pollution before getting a full air permit, making things clearer and easier. This change mainly affects businesses planning major construction and could speed up projects without extra costs, but comments are due by June 29, 2026.
2026-09179 — Definition of Hazardous Waste Applicable to Corrective Action for Releases From Solid Waste Management Units; Withdrawal
The EPA has decided to cancel its plan to change the rules about what counts as hazardous waste for cleaning up pollution at certain waste sites. This means businesses and cleanup crews won’t have to deal with the confusing new rules that were proposed. The withdrawal takes effect immediately, so no extra costs or changes will happen right now.
2026-08750 — Extension of Postponement of Effectiveness for Certain Provisions of Trichloroethylene (TCE); Regulation Under the Toxic Substances Control Act (TSCA)
The EPA is hitting the pause button again on some rules about a chemical called TCE, which is used in workplaces. This means certain limited uses of TCE won’t have to follow new restrictions just yet, while courts review the rules. If you work with TCE, this delay gives you more time before changes kick in, starting May 18, 2026.
Previous / Next Documents
Previous: 2026-03883 — Endangered and Threatened Wildlife and Plants; Removal of Northern and Southern Distinct Population Segments of the Lesser Prairie-Chicken From the List of Endangered and Threatened Wildlife in Compliance With Court Order
The U.S. Fish and Wildlife Service is removing the northern and southern groups of the lesser prairie-chicken from the endangered and threatened species list, following a court order. This means these birds no longer have special protections under the Endangered Species Act, effective February 26, 2026, though the court’s decision took effect earlier. This change affects conservation rules and could impact land use and wildlife management in their habitats.
Next: 2026-03888 — Air Plan Approval; Missouri; Reporting Emission Data, Emission Fees, and Process Information
The EPA just gave a thumbs-up to Missouri’s updated rules about reporting pollution data and paying emission fees from 2025 through 2028 and beyond. This update adds a new chemical to the hazardous list and tweaks some paperwork dates but won’t make the air dirtier or rules tougher. If you’re a Missouri business dealing with emissions, get ready for these changes starting March 30, 2026!