California Code, Business and Professions Code - BPC § 26054

(a) A licensee shall not sell alcoholic beverages or tobacco products on or at any premises licensed under this division.

(b) A premises licensed under this division shall not be located within a 600-foot radius of a school providing instruction in kindergarten or any grades 1 through 12, daycare center, or youth center that is in existence at the time the license is issued, unless the department or a local jurisdiction specifies a different radius. The distance specified in this section shall be measured in the same manner as provided in subdivision (c) of Section 11362.768 of the Health and Safety Code unless otherwise provided by law.

(c) It shall not be a violation of state or local law for a business engaged in the manufacture of cannabis accessories to possess, transport, purchase, or otherwise obtain small amounts of cannabis or cannabis products as necessary to conduct research and development related to the cannabis accessories, provided the cannabis and cannabis products are obtained from a person licensed under this division permitted to provide or deliver the cannabis or cannabis products.

(d) It shall not be a violation of state or local law for an agent of the department to possess, transport, or obtain cannabis or cannabis products as necessary to conduct activities reasonably related to the duties of the department.

(e) It shall not be a violation of state or local law for an agent of a state agency, as defined in Section 1100 of the Government Code, or a local agency, as defined in Section 50001 of the Government Code, to possess, transport, or obtain cannabis or cannabis products as necessary to conduct activities reasonably related to the duties of the state or local agency.