EPA proposes revised pollution limits for Wyoming coal plant
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Table of Contents
The Environmental Protection Agency is proposing changes to federal air quality rules for the Dave Johnston power plant in Converse County, Wyoming. Specifically, the agency wants to adjust the emission limits for nitrogen oxides at Unit 3 of the facility.
Why it matters: This action determines how much air pollution the coal plant is legally allowed to emit and when it must stop running under current federal standards. It affects compliance costs for PacifiCorp, which operates the plant, and visibility conditions in nearby national parks protected under regional haze laws. The change reflects a technical reassessment of what constitutes the best available control technology for this specific unit.
Who it affects
- PacifiCorp, the utility company operating the Dave Johnston power plant
This is a proposed rule from the EPA published in the Federal Register; you should check the original document at docket ID EPA-R08-OAR-2026-1651 before relying on these details.
Agency: Environmental Protection Agency
Source: Federal Register — read the official document