California Code, Government Code - GOV § 56378

(a) In addition to its other powers, the commission shall initiate and make studies of existing governmental agencies.  Those studies shall include, but shall not be limited to, inventorying those agencies and determining their maximum service area and service capacities.  In conducting those studies, the commission may request land use information, studies, joint powers agreements, and plans of cities, counties, districts, including school districts, community college districts, joint powers agencies and joint powers authorities, regional agencies, and state agencies and departments.  Cities, counties, districts, including school districts, community college districts, joint powers agencies and joint powers authorities, regional agencies, and state agencies and departments, shall comply with the request of the commission for that information and the commission shall make its studies available to public agencies and any interested person.  In making these studies, the commission may cooperate with the county planning commissions.

(b) The commission, or the board of supervisors on behalf of the commission, may apply for or accept, or both, any financial assistance and grants-in-aid from public or private agencies or from the state or federal government or from a local government.