# 2025-14983: EPA Greenlights Wyoming's Hazy Power Plant Pollution Fix

2025-14983, Air Plan Approval; Wyoming; Revisions to Regional Haze State Implementation Plan, is a Federal Register rule from Environmental Protection Agency published 2025-08-07 (as of 2026-06-11).

- Canonical: https://policyrisk.com/federal-register/2025-14983
- As of: 2026-06-11
- Plain-text twin of the page above; the HTML and this file carry the same facts.

## Facts
- Document number: 2025-14983
- Title: Air Plan Approval; Wyoming; Revisions to Regional Haze State Implementation Plan
- Type: Rule
- Agencies: Environmental Protection Agency
- Citation: 90 FR 38005
- Published: 2025-08-07
- Effective: unknown
- Comments close: not stated
- Significant: no
- Touches household money: no
- Regulation identifier numbers: none
- Last updated: 2026-06-11

## In one line

EPA Greenlights Wyoming's Hazy Power Plant Pollution Fix

## Summary

The EPA is giving a thumbs-up to Wyoming’s updated plan to cut pollution from the Jim Bridger power plant units. This plan keeps pollution limits steady to help clear up regional haze and protect the air we breathe. These changes affect the power plant’s emissions rules and keep Wyoming on track without extra costs or delays.

## Abstract

The Environmental Protection Agency (EPA) is approving a State Implementation Plan (SIP) revision submitted by the State of Wyoming on December 30, 2022, and supplemented on August 31, 2023, and November 16, 2023, addressing regional haze for Jim Bridger Units 1 and 2 (Wyoming 2022 SIP revision). Wyoming's 2022 SIP revision provides oxides of nitrogen (NO<INF>X</INF>) emission and heat input limits that collectively allow for identical reasonable progress as part of the long term strategy during the first implementation period as the associated emission limits in the existing SIP for Jim Bridger Units 1 and 2. The EPA is also approving monthly and annual NO<INF>X</INF> and sulfur dioxide (SO<INF>2</INF>) emission limits for Jim Bridger Units 1 through 4 that were included in Wyoming's 2022 SIP revision. The EPA is taking this action pursuant to the Clean Air Act (CAA or the Act).

## Effects PRIA read

No economic effects identified for this document.

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## Sources
- [2025-14983 on federalregister.gov](https://www.federalregister.gov/documents/2025/08/07/2025-14983/air-plan-approval-wyoming-revisions-to-regional-haze-state-implementation-plan)
- [2025-14983 as published (PDF)](https://www.govinfo.gov/content/pkg/FR-2025-08-07/pdf/2025-14983.pdf)

## Related
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- [Next: 2025-14987, Federal Acquisition Regulation; Federal Acquisition Circular 2025-05; Small Ent…](https://policyrisk.com/federal-register/2025-14987)
- [All Federal Register documents](https://policyrisk.com/federal-register)

Source: PRIA, https://policyrisk.com/federal-register/2025-14983 (as of 2026-06-11).