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Environmental Protection Agency

National Emission Standards for Hazardous Air Pollutants: Coal- and Oil-Fired Electric Utility Steam Generating Units: Final Repeal

Published February 24, 2026. Takes effect April 27, 2026. printed at 91 FR 9088. amending 40 CFR 63.

In plain English

This repeals some air pollution limits that had been added.

Read it at the Federal Register →

What the Rule Says It Does

The U.S. Environmental Protection Agency (EPA) is finalizing the repeal of specific amendments to the National Emission Standards for Hazardous Air Pollutants (NESHAP) for Coal- and Oil-Fired Electric Utility Steam Generating Units (EGUs), commonly referred to as the Mercury and Air Toxics Standards (MATS), that were promulgated on May 7, 2024. Specifically, the EPA is repealing the revised filterable particulate matter (fPM) emission standard, which serves as a surrogate for non-mercury hazardous air pollutant (HAP) metals for existing coal- fired EGUs; the revised fPM emission standard compliance demonstration requirements; and the revised mercury (Hg) emission standard for lignite-fired EGUs. The EPA is also making technical, non-substantive clarifications to electronic reporting requirements.

This is the rule's own summary, as the Federal Register prints it.

The Orders It Names

The rule names these orders itself. What it does about them is a reading, and none is recorded here.

How This Rule Is Quoted

Federal Register documents are United States government works and are not under copyright. The summary is quoted as printed and the rule itself is one click away, because an index is not a mirror.