Cal. Pub. Res. Code § 30336

The commission shall, to the maximum extent feasible, assist local governments in exercising the planning and regulatory powers and responsibilities provided for by this division where the local government elects to exercise those powers and responsibilities and requests assistance from the commission, and shall cooperate with and assist other public agencies in carrying out this division. Similarly, every public agency, including regional and state agencies and local governments, shall cooperate with the commission and shall, to the extent their resources permit, provide any advice, assistance, or information the commission may require to perform its duties and to more effectively exercise its authority.