Permittees shall maintain and make available to the "Chief" having jurisdiction, records of the sale, delivery, gift or other disposition of explosives. Such records shall be kept on file for a period of not less than three years.
EXCEPTION: Permittees who are rendering a delivery service under a permit issued by the California Highway Patrol pursuant to Division 14 (commencing with Section 31600) of the Vehicle Code.
Cal. Code Regs. Tit. 19, § 1561