April 3, 2020 - EPA proposed minor revisions to the 2012 Coal- and Oil-Fired Electric Utility Steam Generating Units National Emission Standards for Hazardous Air Pollutants (NESHAP), known as the Mercury Air Toxics Standards (MATS). This proposed action identifies data elements to be reported electronically by power plants using the Emissions Collection and Monitoring Plan System (ECMPS) Client Tool and extends the submission of certain reports using portable document format (PDF) file through December 31, 2023. While this proposed action would change the format and mechanism for electronic reporting, it would not change the compliance information already required by the current rule.

Read a pre-publication version of the proposal and a summary fact sheet below.

• Proposed Rule: Mercury and Air Toxics Standards for Power Plants Electronic Reporting Revisions (PDF)(175 pp, 950 K)
  (Pre-publication Federal Register Notice)
• Fact Sheet: Mercury and Air Toxics Standards for Power Plants Electronic Reporting Revisions (PDF)(2 pp, 152 K)