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EPA/AR RIN: 2060-AQ58 Publication ID: 2012 
Title: Reconsideration of Final National Emission Standards for Hazardous Air Pollutants for Reciprocating Internal Combustion Engines 
Abstract: On March 3, 2010, EPA issued a final rule establishing standards for emissions of hazardous air pollutants from existing stationary compression ignition engines located at major and area sources. On August 20, 2010, EPA finalized standards for emissions of HAP from existing stationary spark ignition engines located at major and area sources. EPA received several petitions to reconsider portions of the 2010 final rules. This action will finalize amendments to the rule to address certain issues raised in the petitions. EPA expects that the final rule will include alternative testing options for certain large spark ignition (generally natural gas-fueled) stationary reciprocating internal combustion engines, management practices for a subset of existing spark ignition stationary reciprocating internal combustion engines in sparsely populated areas, and alternative monitoring and compliance options for the same engines in populated areas. EPA also expects the final rule to include a limited temporary allowance for existing stationary emergency area source engines to be used for peak shaving and non-emergency demand response. In addition, EPA expects to increase the hours that stationary emergency engines may be used for emergency demand response. 
Agency: Environmental Protection Agency(EPA)  Priority: Economically Significant 
RIN Status: Previously published in the Unified Agenda Agenda Stage of Rulemaking: Final Rule Stage 
Major: Yes  Unfunded Mandates: No 
CFR Citation: 40 CFR 63   
Legal Authority: 42 USC 7412(d)   
Legal Deadline:
Action Source Description Date
Final  Judicial  Settlement agreement  12/14/2012 
Timetable:
Action Date FR Cite
Notice  12/07/2010  75 FR 75937   
Comment Period Extended  12/23/2010  75 FR 80761   
NPRM  06/07/2012  77 FR 33812   
NPRM Comment Period Extended  06/21/2012  77 FR 37361   
Final Rule  01/00/2013 
Additional Information: Docket #:EPA-HQ-OAR-2008-0708. Split from RIN 2060-AP36. Judicial comments: Consent decree for NESHAP for non-emergency stationary diesel engines 300 HP or greater.
Regulatory Flexibility Analysis Required: No  Government Levels Affected: Undetermined 
Small Entities Affected: Businesses, Governmental Jurisdictions  Federalism: No 
Included in the Regulatory Plan: No 
RIN Information URL: http://www.epa.gov/ttn/atw/rice/ricepg.html  
RIN Data Printed in the FR: No 
Agency Contact:
Melanie King
Environmental Protection Agency
Air and Radiation
109 T.W. Alexander Drive, Mail Code D243-01,
Research Triangle Park, NC 27711
Phone:919 541-2469
Email: king.melanie@epa.gov

Robert Wayland
Environmental Protection Agency
Air and Radiation
D243-01,
Research Triangle Park, NC 27711
Phone:919 541-1045
Fax:919 541-5450
Email: Wayland.RobertJ@epamail.epa.gov