2060-AP67 201004 Unified Agenda of Federal Regulatory and Deregulatory Actions 2060 Air and Radiation AR 2000 Environmental Protection Agency EPA Compression Ignition Engine NSPS; Amendments 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 revisions to the rule will 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 will also clarify the requirements for temporary replacement engines. In addition, this action will amend 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 will propose revisions to the requirements for engines in rural portions of Alaska. The proposed amendments will also correct minor errors in the NSPS. Substantive, Nonsignificant Previously Published in The Unified Agenda Proposed Rule Stage No Undetermined 40 CFR 60 42 USC 7411 Judicial Final 05/22/2011 settlement agreement with API Judicial NPRM 05/22/2010 settlement agreement with API No NPRM 05/00/2010 Final Action 05/00/2011 SAN No. 5365. Undetermined No None Undetermined No No Melanie King 2060 Air and Radiation AR 919 541-2469 king.melanie@epamail.epa.gov D243-01, Research Triangle Park NC 27711 RobertJ Wayland 2060 Air and Radiation AR 919 541-1045 919 541-5450 Wayland.Robertj@epamail.epa.gov D243-01, RTP NC 27711