Cal. Gov. Code § 14905

To be placed on the mailing list as a “complete depository” or as a “selective depository,” a library must contract with the Department of General Services to provide adequate facilities for the storage and use of the publications, and must agree to render reasonable service without charge to qualified patrons in the use of the publications. A library designated as a “complete depository” shall be sent one copy of every state publication, while a library designated as a “selective depository” shall be sent one copy of each publication of the type or issuing agency it selects.