Data / Federal rules / 2026-08372
Utah; Northern Wasatch Front; 2015 8-Hour Ozone National Ambient Air Quality Standards; Reconsideration and Repeal of Finding of Failure To Attain and Reclassification to a Serious Nonattainment Area; Determination of Attainment by the Moderate Attainment Date But for International Emissions
The Environmental Protection Agency published this proposed rule in the Federal Register on April 30, 2026. Comments closed on June 1, 2026.
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What the agency says
The U.S. Environmental Protection Agency (EPA) is proposing to repeal the December 9, 2024, final rule in which the Agency determined that the Northern Wasatch Front (NWF) nonattainment area (NAA) in Utah failed to attain the Clean Air Act (CAA) 2015 ozone National Ambient Air Quality Standards (NAAQS) by the August 3, 2024, Moderate area attainment date, and reclassified the area by operation of law to Serious nonattainment (the "December 2024 Final Rule"). The EPA is also proposing to determine that the NWF ozone NAA would have attained the 2015 ozone NAAQS by the Moderate area attainment date but for emissions emanating from outside the United States (U.S.). If the EPA finalizes this proposed action, the NWF ozone NAA would no longer be subject to the CAA requirements pertaining to reclassification to Serious nonattainment upon failure to attain and would remain classified as Moderate for the 2015 ozone NAAQS.
Key facts
- Document number
- 2026-08372
- Type
- Proposed rule
- Action
- Proposed rule; reconsideration of final rule
- Agency
- Environmental Protection Agency
- Published
- April 30, 2026
- Comments due
- June 1, 2026
- Dates
- Written comments must be received on or before June 1, 2026.
- Docket
- EPA-R08-OAR-2024-0552; FRL-13198-01-R8
- Code of Federal Regulations
- 40 CFR 52; 40 CFR 81
- Topics
- Administrative practice and procedure; Air pollution control; Carbon oxides; Environmental protection; Incorporation by reference; Intergovernmental relations; Nitrogen oxides; Ozone; Reporting and recordkeeping requirements; Sulfur oxides; Volatile organic compounds
- Pages
- 13
Other documents from the Environmental Protection Agency
Everything from the Environmental Protection Agency · Rules on administrative practice and procedure · Rules on air pollution control · Rules on carbon oxides · Published in April 2026
Read from the Federal Register API, last updated 2026-10-24. The document on federalregister.gov is the official record; dates and dockets can change through later corrections. Free to reuse with credit to SpecStream under CC BY 4.0.