Subpart 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.