American Public Power Association
EPARulemakingEPA-HQ-OAR-2018-0794

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

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Last modified
Dec 18, 2025
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closed 351d ago
American Public Power Association filings
6

Activity

American Public Power Association filed 6 comments on this docket between Apr 23, 2019 and Aug 13, 2025. 129 other organizations filed here. The comment window closed 351d ago.

What American Public Power Association filed (6)

Aug 13, 2025· Comment submitted by American Public Power Association (APPA)· EPA-HQ-OAR-2018-0794-7164

Comments of the American Public Power Association on the National Emission Standards for Hazardous Air Pollutants: Coal- and Oil-Fired Electric Utility Steam Generating Units Proposal, (Docket Id. No. EPA-HQ-OAR-2018-0794, 90 Fed. Reg. at 25,535, June 17, 2025)

Jun 28, 2023· Comment submitted by American Public Power Association (APPA)· EPA-HQ-OAR-2018-0794-5958

The American Public Power Association (APPA or Association) appreciates the opportunity to submit the attached comments in response to the U.S. Environmental Protection Agency's (EPA or Agency) proposed "National Emission Standards for Hazardous Air Pollutants: Coal- and-Oil-Fired Electric Utility Steam Generating Units Review of the Residual Risk and Technology Review."

Jun 8, 2023· Comment submitted by American Public Power Association (APPA)· EPA-HQ-OAR-2018-0794-5886

Filed on regulations.gov — full text not in the inline record.

Jun 8, 2023· Comment submitted by American Public Power Association· EPA-HQ-OAR-2018-0794-5879

The American Public Power Association (APPA) respectfully requests that the U.S. Environmental Protection Agency (EPA or Agency) provide a 30-day extension of the public comment period for the proposed revisions to the National Emission Standards for Hazardous Air Pollutants: Coal- and Oil-Fired Electric Utility Steam Generating Units Review of the Residual Risk and Technology Review, also known as the Mercury and Air Toxic Standards Residual Risk and Technology Review (MATS RTR)

Apr 12, 2022· Comment submitted by American Public Power Association (APPA)· EPA-HQ-OAR-2018-0794-4939

The American Public Power Association (APPA or the Association) appreciates the opportunity to provide comments on the Environmental Protection Agency's (EPA or Agency) proposed rule entitled, "National Emissions Standards for Hazardous Air Pollutants: Coal- and Oil-Fired Electric Utility Steam Generating Units--Revocation of the 2020 Reconsideration, and Affirmation of the Appropriate and Necessary Supplemental Finding; Notice of Proposed Rulemaking." (Proposed Rule) See attached file(s)

Apr 23, 2019· Comment submitted by Carolyn Slaughter, Director, Environmental Policy, American Public Power Association (APPA)· EPA-HQ-OAR-2018-0794-1185

The American Public Power Association (APPA or Association) appreciates the opportunity to provide comments on the Environmental Protection Agencys (EPA or Agency) proposed rule entitled, National Emissions Standards for Hazardous Air Pollutants: Coal- and Oil-Fired Electric Utility Steam Generating Units- Reconsideration of Supplemental Finding and Residual Risk and Technology Review. (Proposed Rule or Reconsideration Rule).

Abstract

The U.S. Environmental Protection Agency is proposing to repeal specific amendments to the National Emission Standards for Hazardous Air Pollutants 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.

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