Utah's Dirty Air Gets a Do-Over: EPA Extends Ozone Deadline
Published Date: 4/23/2026
Proposed Rule
Summary
The EPA is proposing to undo a previous decision that said Utah’s Uinta Basin didn’t meet air quality rules for ozone pollution by 2022. Instead, they want to give the area an extra year, until August 2023, to show it meets the standards, based on recent air data. This means the Uinta Basin won’t face tougher pollution rules and can keep its current status, helping local communities and businesses avoid costly changes for now.
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Analyzed Economic Effects
4 provisions identified: 4 benefits, 0 costs, 0 mixed.
One‑Year Attainment Date Extension
If you live or operate in the Uinta Basin (portions of Duchesne and Uintah Counties, Utah), the EPA is proposing to grant a second 1‑year extension of the Marginal attainment date from August 3, 2022 to August 3, 2023 based on certified ozone monitoring data (including the 2020–2022 design value).
Repeal of Failure Finding and Avoided Reclassification
The EPA proposes to repeal its December 16, 2024 finding that the Uinta Basin failed to attain the 2015 ozone standard and to undo the reclassification to a Moderate nonattainment area, meaning the Uinta Basin would remain a Marginal nonattainment area and would not become subject to the reclassification requirements triggered by a failure-to-attain determination.
Tribal Lands: No Substantial Direct Costs
The EPA says this proposed action has Tribal implications for Indian country within the Uintah and Ouray Reservation but will neither impose substantial direct compliance costs on Tribal governments nor preempt Tribal law, and the Tribe may request consultation or submit comments during the rulemaking.
No Significant Small‑Entity Economic Impact
The EPA certifies under the Regulatory Flexibility Act that this proposed action will not have a significant economic impact on a substantial number of small entities and will not itself impose requirements on small entities.
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