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EPA/AR RIN: 2060-AP52 Publication ID: Fall 2010 
Title: National Emission Standards for Hazardous Air Pollutants for Coal- and Oil-Fired Electric Utility Steam Generating Units 
Abstract: On May 18, 2005 (70 FR 28606), EPA published a final rule requiring reductions in emissions of mercury from Electric Utility Steam Generating Units. That rule was vacated on February 8, 2008, by the U.S. Court of Appeals for the District of Columbia Circuit. As a result of that vacatur, coal- and oil-fired electric utility steam generating units remain on the list of sources that must be regulated under section 112 of the Clean Air Act (CAA). The Agency will develop standards under CAA section 112(d), which will reduce hazardous air pollutant (HAP) emissions from this source category. Recent court decisions on other CAA section 112(d) rules will be considered in developing this regulation. 
Agency: Environmental Protection Agency(EPA)  Priority: Economically Significant 
RIN Status: Previously published in the Unified Agenda Agenda Stage of Rulemaking: Proposed Rule Stage 
Major: Yes  Unfunded Mandates: Undetermined 
CFR Citation: 40 CFR 63   
Legal Authority: Clean Air Act sec 112(d)   
Legal Deadline:
Action Source Description Date
Final  Judicial  No later than November 16, 2011, EPA shall sign for publication in the Federal Register a notice of final rulemaking.  11/16/2011 
NPRM  Judicial  No later than March 16, 2011, EPA shall sign for publication in the Federal Register a notice of proposed rulemaking.  03/16/2011 

Statement of Need: Section 112(n)(1)(A) of the Clean Air Act required EPA to conduct a study of the hazards to public health resulting from emissions of hazardous air pollutants from electric utility steam generating units and, after considering the results of that study, determine whether it was appropriate and necessary to regulate such units under section 112. The study was completed in 1998 and in December 2000, EPA determined that it was appropriate and necessary to regulate coal- and oil-fired electric utility steam generating units and added such units to the list of sources for which standards must be developed under section 112. The February 8, 2008, vacatur of the May 18, 2005, Clean Air Mercury Rule and March 29, 2005, section 112(n) Revision Rule (which had removed such sources from the list) resulted in the requirement to regulate under section 112 being reinstated.

Summary of the Legal Basis: Clean Air Act, section 112

Alternatives: Not yet determined.

Anticipated Costs and Benefits: Not yet determined.

Risks: Not yet determined.

Action Date FR Cite
NPRM  03/00/2011    
Final Action  11/00/2011    
Additional Information: EPA Docket information: EPA-HQ-OAR-2009-0234
Regulatory Flexibility Analysis Required: Undetermined  Government Levels Affected: Federal, Local, State, Tribal 
Small Entities Affected: No  Federalism: Undetermined 
Included in the Regulatory Plan: Yes 
Sectors Affected: 221112 Fossil Fuel Electric Power Generation 
RIN Data Printed in the FR: No 
Agency Contact:
Bill Maxwell
Environmental Protection Agency
Air and Radiation
Research Triangle Park, NC 27711
Phone:919 541-5430
Fax:919 541-5450

RobertJ Wayland
Environmental Protection Agency
Air and Radiation
RTP, NC 27711
Phone:919 541-1045
Fax:919 541-5450

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