California Code, Vehicle Code - VEH § 34064

Any duly authorized employee of the department may inspect cargo tanks and hazardous waste transport vehicles and containers, or the appurtenances and equipment thereof, in terminals, yards, or similar places, as often as may be necessary for the purpose of ascertaining and causing to be corrected any conditions likely to cause damage to any personal or real property or injury or death to any person or animal or any violation of the provisions or intent of this division.  Any duly authorized employee of the department may enter upon private property to conduct those inspections.  The owner, lessee, bailee, manager, or operator of that property shall permit any duly authorized employee of the department to enter the property and inspect cargo tanks and hazardous waste transport vehicles and containers for the purpose stated in this division.