Cal. Food & Agric. Code § 29070

(a) Any person relocating a colony of bees from a registered apiary in one county to another county, where the apiary is not registered for the current calendar year, shall notify the destination commissioner within 72 hours of the first movement or entry into the county. The notification shall include all of the following:
1. (1) The name and address of the apiary operator or the operator’s designated representative.
2. (2) A telephone number where the apiary operator or the operator’s designated representative may be reached.
(b) The apiary operator or the operator’s designated representative shall provide locations of each colony upon request by the commissioner of any county.
(c) Subsequent movement into the destination county shall require further notification to the commissioner within 72 hours of movement.
(d) When the apiary operator removes the last colony from the county, the operator shall notify the commissioner of that final movement within 72 hours.