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EPA/OAR RIN: 2060-AU48 Publication ID: Spring 2020 
Title: NESHAP: Coal- & Oil-Fired Electric Utility Steam Generating Units--Subcategory of Certain Existing UGUs Firing Eastern Bituminous Coal Refuse for Emissions of Acid Gas Hazardous Air Pollutants 
Abstract: This rulemaking will put forth EPA's final decision on one of the three distinct actions included in EPA's February 7, 2019 proposal (84 FR 2670) regarding the National Emission Standards for Hazardous Air Pollutants: Coal- and Oil-Fired Electric Utility Steam Generating Units (commonly referred to as the Mercury and Air Toxics Standards (MATS)), 40 CFR 63, subpart UUUUU. In the proposal, EPA solicited comments on establishing a subcategory for emissions of acid gas hazardous air pollutants (HAP) from certain existing electric utility steam generating units (EGUs) firing eastern bituminous coal refuse. Specifically, this rulemaking will address EPA's final decision regarding establishing such a subcategory and acid gas HAP emission standards after review of the public comments. 
Agency: Environmental Protection Agency(EPA)  Priority: Economically Significant 
RIN Status: Previously published in the Unified Agenda Agenda Stage of Rulemaking: Completed Actions 
Major: Yes  Unfunded Mandates: No 
EO 13771 Designation: Deregulatory 
CFR Citation: 40 CFR 63   
Legal Authority: 42 U.S.C. 7412 Clean Air Act   
Legal Deadline:
Action Source Description Date
Action Date FR Cite
Final Rule  04/15/2020  85 FR 20838   
Final Rule Effective  04/15/2020 
Additional Information: Docket #:EPA-HQ-OAR-2018-0794
Regulatory Flexibility Analysis Required: No  Government Levels Affected: Federal, State 
Small Entities Affected: No  Federalism: No 
Included in the Regulatory Plan: No 
RIN Information URL: :  
Sectors Affected: 221112 Fossil Fuel Electric Power Generation; 221122 Electric Power Distribution 
RIN Data Printed in the FR: No 
Agency Contact:
Mary Johnson
Environmental Protection Agency
Office of Air and Radiation
Research Triangle Park, NC 27711
Phone:919 541-5025

Nick Hutson
Environmental Protection Agency
Office of Air and Radiation
109 T.W. Alexander Drive, Mail Code D243-01,
Research Triangle Park, NC 27711
Phone:919 541-2968
Fax:919 541-4991