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Title 40

Displaying title 40, up to date as of 7/09/2026. Title 40 was last amended 7/09/2026.
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Title 40Protection of EnvironmentPart / Section
Chapter IEnvironmental Protection Agency1 – 1099
Subchapter UAir Pollution Controls1000 – 1099
Part 1068General Compliance Provisions for Highway, Stationary, and Nonroad Programs1068.1 – 1068.650
Subpart AApplicability and Miscellaneous Provisions1068.1 – 1068.95
Subpart BProhibited Actions and Related Requirements1068.101 – 1068.125
§ 1068.101What general actions does this regulation prohibit?
§ 1068.103Provisions related to the duration and applicability of certificates of conformity.
§ 1068.105What other provisions apply to me specifically if I manufacture equipment needing certified engines?
§ 1068.110Other provisions for engines/equipment in service.
§ 1068.115What are manufacturers' emission-related warranty requirements?
§ 1068.120Requirements for rebuilding engines.
§ 1068.125What happens if I violate the regulations?
Subpart CExemptions and Exclusions1068.201 – 1068.265
Subpart DImports1068.301 – 1068.360
§ 1068.301General provisions for importing engines/equipment.
§ 1068.305How do I get an exemption or exclusion for imported engines/equipment?
§ 1068.310Exclusions for imported engines/equipment.
§ 1068.315Permanent exemptions for imported engines/equipment.
§ 1068.325Temporary exemptions for imported engines/equipment.
§ 1068.335Penalties for violations.
§ 1068.360Restrictions for assigning a model year to imported engines and equipment.
Subpart ESelective Enforcement Auditing1068.401 – 1068.455
Subpart FReporting Defects and Recalling Engines/Equipment1068.501 – 1068.535
Subpart GHearings1068.601 – 1068.650
Appendix A to Part 1068
Emission-Related Components
Appendix B to Part 1068
Emission-Related Parameters and Specifications
Appendix C to Part 1068
High-Altitude Counties