Cal. Pub. Res. Code § 5080.33

A concession may be authorized on lands subject to an agreement entered into pursuant to this article, so long as the public agency complies with public bidding procedures that provide for at least the same degree of participation and competition as the procedures established by Article 1 (commencing with Section 5080.01). No concession may be advertised for bid unless and until the director has approved in writing the terms on which the concession is proposed to be let.