Data / Federal rules / 2025-20352
Approval and Promulgation of Implementation Plans; State of Utah; Salt Lake City and Provo, Utah PM2.5 Redesignations to Attainment and Utah State Implementation Plan Revisions
The Environmental Protection Agency published this final rule in the Federal Register on November 19, 2025. It took effect on December 19, 2025.
SpecStream is the live web data engine for teams and agents. It reads every rule and proposed rule in the Federal Register each morning, and this page is that reading. Name your industry once and new rules, comment deadlines and effective dates arrive in your sheet, CRM, Slack or agent as they are published.
What the agency says
The Environmental Protection Agency (EPA) is approving the redesignation of the Salt Lake City, Utah and Provo, Utah nonattainment areas (NAAs) to attainment for the 2006 24-hour fine particulate matter with an aerodynamic diameter less than or equal to a nominal 2.5 microns (PM<INF>2.5</INF>) National Ambient Air Quality Standard (NAAQS), and also approving multiple related State Implementation Plan (SIP) submissions. We are approving SIP revisions submitted by the State of Utah on January 19, 2017; February 4 and 15, 2019; January 13, 2020; December 17, 2020; and July 15, 2025. These SIP submissions include revisions to Utah Administrative Code (UAC) section R307-110; revisions to Utah state law SIP sections IX.H.11, 12, and 13; best available control measures/best available control technologies (BACM/ BACT) PM<INF>2.5</INF> determinations for Salt Lake City and Provo; maintenance plans for the Salt Lake City and Provo areas for PM<INF>2.5</INF> including motor vehicle emissions budgets used for transportation conformity purposes; and the request for redesignation under the 2006 24-hour PM<INF>2.5</INF> standard. The EPA is also finding the budgets adequate for transportation conformity purposes. The EPA is taking this action pursuant to the Clean Air Act (CAA or the Act).
Key facts
- Document number
- 2025-20352
- Type
- Final rule
- Action
- Final rule
- Agency
- Environmental Protection Agency
- Published
- November 19, 2025
- Takes effect
- December 19, 2025
- Dates
- This rule is effective on December 19, 2025.
- Docket
- EPA-R08-OAR-2020-0098; FRL-12594-02-R8
- Code of Federal Regulations
- 40 CFR 52; 40 CFR 81
- Topics
- Air pollution control; Carbon monoxide; Environmental protection; Greenhouse gases; Incorporation by reference; Intergovernmental relations; Lead; Nitrogen dioxide; Ozone; Particulate matter; Reporting and recordkeeping requirements; Sulfur oxides; Volatile organic compounds; Wilderness areas
- Pages
- 6
Other documents from the Environmental Protection Agency
Everything from the Environmental Protection Agency · Rules on air pollution control · Rules on carbon monoxide · Rules on environmental protection · Published in November 2025
Read from the Federal Register API, last updated 2026-10-23. 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.