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EPA/AR

RIN: 2060-AO38

Publication ID: Fall 2010

Title: Control of Emissions From New Marine CompressionIgnition 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 nitrogen oxides (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 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 other components of which would consist of the new amendments to MARPOL Annex VI that will extend these standards to foreign vessels (through the Act to Prevent Pollution from Ships) and pursuing Emission Control Area (ECA) designation for U.S. coastal areas in accordance with MARPOL Annex VI. Implementation of this coordinated strategy 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. EPA finalized this rule on December 18, 2009.
Agency: Environmental Protection Agency(EPA)	Priority: Other Significant
RIN Status: Previously published in the Unified Agenda	Agenda Stage of Rulemaking: Completed Actions
Major: No	Unfunded Mandates: No
CFR Citation: 40 CFR 1042 40 CFR 1065 40 CFR 94 40 CFR 80
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	08/28/2009	74 FR 44441
Final Action	04/30/2010	75 FR 22895

Additional Information: EPA Docket information: EPA-HQ-OAR-2007-0121
Regulatory Flexibility Analysis Required: No	Government Levels Affected: None
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: Jean Revelt Environmental Protection Agency Air and Radiation OAR/OTAQ/ASD, Ann Arbor, MI 48105 Phone:734 214-4822 Fax:734 214-4050 Email: revelt.jean-marie@epa.gov Michael Samulski Environmental Protection Agency Air and Radiation USEPA, Ann Arbor, MI 48105 Phone:734 214-4532 Email: Samulski.Michael@epamail.epa.gov