California Code, Health and Safety Code - HSC § 12124

The keeping of a journal, record book, or record of sale required by Sections 12121, 12122, and 12123 does not apply to those persons 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, nor does it apply to any possessor or user of explosives not required to have a permit under Section 12102. A journal, record book, or record of sale need not be kept by anyone who is in lawful possession of an explosive and who receives and detonates all such explosives within a 24-hour period.