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EPA/AR

RIN: 2060-AM06

Publication ID: Fall 2008

Title: Control of Emissions From New Locomotives and New Marine Diesel Engines Less Than 30 Liters per Cylinder
Abstract: Locomotives and marine diesel engines are important contributors to our Nations air pollution today accounting for about 20 percent of mobile source nitrogen oxides (NOx) emissions and about 25 percent of mobile source fine diesel particulate matter (PM 2.5) emissions. EPA is proposing a comprehensive program to significantly reduce emissions from locomotives and marine diesel engines. It would apply new exhaust emission standards and idle reduction requirements to diesel locomotives of all types -- line-haul, switch, and passenger. It would also set new exhaust emission standards for all types of marine diesel engines below 30 liters per cylinder displacement. These include marine propulsion engines used on vessels from recreational and small fishing boats to super-yachts, tugs and Great Lakes freighters, and marine auxiliary engines ranging from small gensets to large generators on ocean-going vessels. We estimate PM reductions of 90 percent and NOx reductions of 80 percent from engines meeting these standards, compared to engines meeting the current standards. EPA has already taken steps to bring emissions levels from light-duty and heavy-duty highway, and nonroad diesel vehicles and engines to very low levels over the next decade, while the emission levels for locomotive and marine diesel engines remain at much higher levels--comparable to the emissions for highway trucks in the early 1990s. The additional PM2.5 and NOx emission reductions resulting from the proposed standards would assist States in attaining and maintaining the Ozone and the PM2.5 National Air Quality Standards both near term and in the decades to come. The proposed program includes a set of near-term emission standards for newly-built engines. These would phase in starting in 2009. The near-term program also contains more stringent emissions standards for existing locomotives. These would apply when the locomotive is remanufactured and would take effect as soon as certified remanufacture systems are available (as early as 2008), but no later than 2010 (2013 for Tier 2 locomotives). We are requesting comment on an alternative under consideration that would apply a similar remanufacture requirement to existing marine diesel engines installed in vessels currently in the fleet. We are also proposing long-term emissions standards for newly-built locomotives and marine diesel engines based on the application of high-efficiency catalytic aftertreatment technology. These standards would phase in beginning in 2015 for locomotives and 2014 for marine diesel engines. Finally, we are proposing revised testing, certification, and compliance provisions to better ensure emissions control in use. Entities potentially regulated by this action are those which manufacture, remanufacture and/or import locomotives and/or locomotive engines; and those which own and operate locomotives. This proposed action would also affect companies and persons that manufacture, sell, or import into the United States new marine compression-ignition engines, companies and persons that rebuild or maintain these engines, companies and persons that make vessels that use such engines, and the owners/operators of such vessels.
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
CFR Citation: 40 CFR 92 40 CFR 94
Legal Authority: 42 USC 7522 to 7621

Legal Deadline: None

Timetable:

Action	Date	FR Cite
ANPRM	06/29/2004	69 FR 39276
NPRM	04/03/2007	72 FR 15938
Final Action	05/06/2008	73 FR 25097

Additional Information: SAN No. 4871; EPA publication information: ANPRM - http://www.epa.gov/fedrgstr/EPA-AIR/2004/June/Day-29/a11294.pdf; EPA Docket information: EPA-HQ-OAR-2003-0190
Regulatory Flexibility Analysis Required: No	Government Levels Affected: Federal
Small Entities Affected: Businesses	Federalism: No
Included in the Regulatory Plan: No
RIN Data Printed in the FR: No
Agency Contact: Jean-Marie Revelt Environmental Protection Agency Air and Radiation OAR/OTAQ/ASD, Ann Arbor, MI 48105 Phone:734 214-4822 Fax:734 214-4816 Email: revelt.jean-marie@epa.gov