California Code, Vehicle Code - VEH § 32002.5

(a) The commissioner may temporarily suspend a license to haul hazardous material prior to any hearing, when, in the commissioner's opinion, the action is necessary to prevent an imminent and substantial danger to the public health.  The commissioner shall notify the holder of the license of the temporary suspension and the effective date thereof and, at the same time, shall serve the person with an accusation.  Upon receipt of a notice of defense to the accusation, the commissioner shall set the matter for a hearing which shall be held as soon as possible, but not later than 10 days after receipt of the notice of defense.  The temporary suspension shall remain in effect until the hearing is completed and the commissioner has made a final determination on the merits, which, in any event, shall be made within 10 days after the completion of the hearing.  If the determination is not transmitted within 10 days after the hearing is completed, the temporary suspension is of no further effect.

(b) The commissioner shall suspend a license to transport hazardous material of a person or motorcarrier, for a period of at least 90 days but not more than 180 days, if the holder of the license permits the transportation of fissile class III shipments or highway route controlled quantity radioactive materials, as defined in Subpart I (commencing withSection 173.401) of Part 173 of Title 49 of the Code of Federal Regulations, by a person who does not possess a license of the appropriate class and an attached radioactive materials driver's certificate or an endorsement issued under Article 6 (commencing with Section 15275) of Chapter 7 of Division 6.