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EPA/AR

RIN: 2060-AO38

Publication ID: Spring 2009

Title: Control of Emissions From New Marine Compression-Ignition Engines At or Above 30 Liters per Cylinder
Abstract: Category 3 marine diesel engines (those with per cylinder displacement greater than 30 liters) are very large engines that are used for propulsion power in ocean-going vessels. Emissions from these engines contribute significantly to unhealthful levels of ambient particulate matter and ozone in many parts of the United States. These engines are highly mobile and are not easily controlled at a state or local level. EPA currently regulates emissions from Category 3 marine diesel engines on ships flagged in the United States. This rulemaking will consider long-term NOx standards for new Category 3 marine diesel engines that would require the use of high efficiency aftertreatment technology. We are considering standards equivalent to the limits for nitrogen oxides (NOx) recently adopted by the International Maritime Organization, which are based on the position advanced by the United States Government as part of the international negotiations. We are also considering a revision to our diesel fuel program under the Act to allow for the manufacture and sale of marine diesel fuel with a sulfur content up to 1,000 ppm for use in Category 3 engines. The proposal would be part of a coordinated strategy, the second component of which would consist of pursuing Emission Control Area (ECA) designation for U.S. coastal areas in accordance with MARPOL Annex VI. This will ensure that all ships that affect U.S. air quality meet stringent NOx and fuel sulfur requirements. A recent D.C. Circuit decision (February 2009) upheld EPA's deadline of 12/17/09 based on EPA's commitment in the regulation to meet that deadline for the final Category 3 rule.
Agency: Environmental Protection Agency(EPA)	Priority: Other Significant
RIN Status: Previously published in the Unified Agenda	Agenda Stage of Rulemaking: Proposed Rule Stage
Major: No	Unfunded Mandates: No
CFR Citation: 40 CFR 1042 40 CFR 1065 40 CFR 94
Legal Authority: 42 USC 7547 42 USC 7545

Legal Deadline:

Action	Source	Description	Date
Final	Judicial		12/17/2009

Timetable:

Action	Date	FR Cite
ANPRM	12/07/2007	72 FR 69521
NPRM	05/00/2009
Final Action	12/00/2009

Additional Information: SAN No. 5129; EPA publication information: ANPRM - http://www.epa.gov/fedrgstr/EPA-AIR/2007/December/Day-07/a23556.htm; EPA Docket information: EPA-HQ-OAR-2007-0121
Regulatory Flexibility Analysis Required: No	Government Levels Affected: Federal
Small Entities Affected: Businesses	Federalism: No
Included in the Regulatory Plan: No
International Impacts: This regulatory action will be likely to have international trade and investment effects, or otherwise be of international interest.
RIN Information URL: www.epa.gov/otaq/oceanvessels.htm
RIN Data Printed in the FR: No
Agency Contact: Michael Samulski Environmental Protection Agency Air and Radiation USEPA, Ann Arbor, MI 48105 Phone:734 214-4532 Email: Samulski.Michael@epamail.epa.gov 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