The U.S. Environmental Protection Agency (EPA) will hold a virtual public hearing on July 10, 2025, to provide the public the opportunity to present comments and information regarding the Agency’s proposed Repeal of the 2024 Amendments to the Mercury and Air Toxics Standards (MATS).
The EPA is proposing to repeal certain amendments issued on May 7, 2024, to the National Emission Standards for Hazardous Air Pollutants (NESHAP) for Coal- and Oil-Fired Electric Utility Steam Generating Units (EGUs), commonly known as the Mercury and Air Toxics Standards for power plants or simply MATS. 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.
Date and time
Thursday, July 10, 2025, 11:00 AM – 7:00 PM Eastern Time
Location
Online Virtual Platform
If you have any questions about the hearing or need help registering, please email: MATS-Amendments-Repeal-Publichearing@rti.org.
Registration
The last day to pre-register is June 29, 2025. Please submit a separate registration form for each person attending or speaking. You will receive an email from MATS-Amendments-Repeal-Publichearing@rti.org with your unique connection information.
Note: EPA will use your registration information solely for this event. If you register to speak, we will post your name and affiliation as part of the hearing agenda. No other information you provide, such as contact or personal information, will be included on the hearing agenda or shared with any third party.
Language/Reasonable Accommodation Request
If you need assistance or a reasonable accommodation, please contact the SPPD Public Hearing Team by email: SPPDpublichearing@epa.gov; or by telephone: 888-372-8699. We must receive this request by June 24, 2025. After this date, we may not be able to arrange accommodations.
EPA will take written comment on the proposal until August 11, 2025.
EPA considers all comments equally, whether submitted in writing to the docket or given orally at a public hearing. Each speaker will have 4 minutes to speak. If time allows, EPA will provide an opportunity for public hearing attendees, who did not preregister, to provide oral testimony.
Public Hearing Information
Hearing Date: July 10, 2025
The hearing will be held in three sessions:
- Session 1: 11:00 AM - 1:00 PM (Eastern Time)
- Session 2: 2:00 PM - 4:00 PM (Eastern Time)
- Session 3: 5:00 PM - 7:00 PM (Eastern Time)
This meeting will be held through a virtual platform. A link to the meeting and any additional instructions will be sent to your email address after registration closes. There is also an option to call into the meeting; that information will be provided after registration closes.
Additional Information/Questions
To read the proposal and fact sheets, please visit https://www.epa.gov/stationary-sources-air-pollution/mercury-and-air-toxics-standards.
If you have any questions about the hearing or need help registering, please email our hearing coordinators at: MATS-Amendments-Repeal-Publichearing@rti.org, or contact the SPPD Public Hearing Team by email: SPPDpublichearing@epa.gov; or by telephone: 888-372-8699.