U.S. Code of Federal Regulations

Regulations most recently checked for updates: Aug 27, 2025

All TitlesTitle 40Chapter IPart 66Subpart D - Subpart D—Exemption Requests; Revocation of Exemptions
§ 66.31 - Exemptions based on an order, extension or suspension.
§ 66.32 - De Minimis exemptions.
§ 66.33 - De Minimis exemptions: malfunctions.
§ 66.34 - Termination of exemptions.
§ 66.35 - Revocation of exemptions.
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