Utah; Uinta Basin; 2015 8-Hour Ozone National Ambient Air Quality Standard; Reconsideratio
The U.S. Environmental Protection Agency (EPA or Agency) is proposing to repeal the December 16, 2024 final rule in which we denied a request by the State of Utah (State) and the Ute Indian Tribe of the Uintah and Ouray Reservation (Ute Indian Tribe or Tribe) for an extension of the attainment date for the Uinta Basin
| Agency | Environmental Protection Agency |
|---|---|
| Document type | Proposed Rule |
| Published | 2026-04-23 |
| Summary | The U.S. Environmental Protection Agency (EPA or Agency) is proposing to repeal the December 16, 2024 final rule in which we denied a request by the State of Utah (State) and the Ute Indian Tribe of the Uintah and Ouray Reservation (Ute Indian Tribe or Tribe) for an extension of the attainment date for the Uinta Basin (UB), Utah Marginal nonattainment area (NAA) under the 2015 ozone National Ambient Air Quality Standard (NAAQS), determined that the area failed to attain the Clean Air Act (CAA) 2015 ozone NAAQS by the applicable Marginal attainment date of August 3, 2022, and reclassified the area by operation of law to a Moderate ozone NAA. The EPA is also reproposing to grant the second 1-y |
| Document number | 2026-07904 |
| Official record | https://www.federalregister.gov/documents/2026/04/23/2026-07904/utah-uinta-basin-2015-8-hour-ozone-national-ambient-air-quality-standard-reconsideration-and-repeal |