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EPA/AR RIN: 2060-AP67 Publication ID: Fall 2010 
Title: Compression Ignition Engine NSPS—Amendments 
Abstract: This action will amend the New Source Performance Standards (NSPS) for stationary compression ignition internal combustion engines. These amendments are the result of a settlement agreement with the American Petroleum Institute. The amendments to the rule include limiting the operation and maintenance (O&M) requirements to emission-related O&M and allowing certified engine owners/operators to operate/maintain their engines according to their own O&M practices if they conduct performance testing to demonstrate compliance. The amendments also clarify the requirements for temporary replacement engines. In addition, this action amends the NSPS to implement more stringent emission standards for engines with a displacement above 10 liters/cylinder, consistent with recent revisions to standards for similar mobile source engines. This action revises the requirements for engines in rural portions of Alaska. The amendments also correct minor errors in the NSPS. 
Agency: Environmental Protection Agency(EPA)  Priority: Substantive, Nonsignificant 
RIN Status: Previously published in the Unified Agenda Agenda Stage of Rulemaking: Final Rule Stage 
Major: No  Unfunded Mandates: No 
CFR Citation: 40 CFR 60   
Legal Authority: 42 USC 7411   
Legal Deadline:
Action Source Description Date
Final  Judicial  settlement agreement with API  05/22/2011 
NPRM  Judicial  settlement agreement with API  05/22/2010 
Timetable:
Action Date FR Cite
NPRM  06/08/2010  75 FR 32611   
Final Action; Extension of Public Comment Period  08/06/2010  75 FR 47520   
Final Action  06/00/2011    
Additional Information: EPA publication information: NPRM - http://www.regulations.gov/search/Regs/home.html#documentDetail?R=0900006480afe2c6http://www.regulations.gov/search/Regs/home.html#documentDetail?R=0900006480afe2c6; EPA Docket information: EPA-HQ-OAR-2010-0295
Regulatory Flexibility Analysis Required: Undetermined  Government Levels Affected: Federal, Local, State 
Small Entities Affected: Businesses  Federalism: No 
Included in the Regulatory Plan: No 
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 J. Wayland
Environmental Protection Agency
Air and Radiation
C439-01,
Research Triangle Park, NC 27711
Phone:919 541-1045
Email: wayland.robertj@epa.gov