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

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Proposed RuleSignificant

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

In this action, the U.S. Environmental Protection Agency (EPA) is proposing to repeal 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. The amendments that the EPA is proposing to repeal include 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.

Published

Jun 17, 2025

Comments Close

Aug 11, 2025

Citation

90 FR 25535

Agencies

2025-10992National Emission Standards for Hazardous Air Pollutants: Coal- and Oil-Fired Electric Utility Steam Generating Units

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Agencies (1)

EPA — Environmental Protection Agency

Topics

Administrative practice and procedure Air pollution control Environmental protection Hazardous substances Intergovernmental relations Reporting and recordkeeping requirements

Docket IDs

EPA-HQ-OAR-2018-0794

FRL-6716.4-01-OAR

Regulation ID Numbers (RINs)

2060-AW68

CFR References

40 CFR 63

Document Details

Type: Proposed Rule
Action: Proposed rule.
Document #: 2025-10992
Citation: 90 FR 25535
Publication Date: Jun 17, 2025
Dates: Comments. Comments must be received on or before August 11, 2025. Comments on the information collection provisions of the proposed rule under the Paperwork Reduction Act (PRA) must be received by the Office of Management and Budget's Office of Information and Regulatory Affairs (OMB-OIRA) on or before July 17, 2025. For specific instructions, please refer to the PRA information in the "Statutory and Executive Order Reviews" section of this preamble.
Federal Register Pages: Vol. 90, pp. 25535–25546
Page Views: 4,825

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