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Title 40

Displaying title 40, up to date as of 7/08/2026. Title 40 was last amended 7/08/2026.
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Title 40Protection of EnvironmentPart / Section
Chapter IEnvironmental Protection Agency1 – 1099
Subchapter UAir Pollution Controls1000 – 1099
Part 1042Control of Emissions from New and In-Use Marine Compression-Ignition Engines and Vessels1042.1 – 1042.925
Subpart AOverview and Applicability1042.1 – 1042.30
§ 1042.1Applicability.
§ 1042.2Who is responsible for compliance?
§ 1042.5Exclusions.
§ 1042.10Organization of this part.
§ 1042.15Do any other regulation parts apply to me?
§ 1042.30Submission of information.
Subpart BEmission Standards and Related Requirements1042.101 – 1042.145
Subpart CCertifying Engine Families1042.201 – 1042.255
Subpart DTesting Production-line Engines1042.301 – 1042.350
Subpart EIn-use Testing1042.401
§ 1042.401General Provisions.
Subpart FTest Procedures1042.501 – 1042.525
§ 1042.501How do I run a valid emission test?
§ 1042.505Testing engines using discrete-mode or ramped-modal duty cycles.
§ 1042.515Test procedures related to not-to-exceed standards.
§ 1042.520What testing must I perform to establish deterioration factors?
§ 1042.525How do I adjust emission levels to account for infrequently regenerating aftertreatment devices?
Subpart GSpecial Compliance Provisions1042.601 – 1042.670
Subpart HAveraging, Banking, and Trading for Certification1042.701 – 1042.745
Subpart ISpecial Provisions for Remanufactured Marine Engines1042.801 – 1042.850
Subpart JDefinitions and Other Reference Information1042.901 – 1042.925
Appendix I to Part 1042
Summary of Previous Emission Standards
Appendix II to Part 1042
Steady-State Duty Cycles
Appendix III to Part 1042
Not-to-Exceed Zones