Cal. Pub. Resources Code § 5406
Upon receiving an offer of compensation or land, or both, from the acquiring entity for the acquisition of the park, the legislative body of the operating entity may enter into an agreement with the acquiring entity to the effect that the acquiring entity has complied with the requirements of Section 5405 or Section 5407.2 in determining the amount of compensation or land, or both. Such agreement may be entered into only after a public hearing, except where less than 10 percent of the total area of a state park is acquired, in which case the operating entity shall follow the procedure it adopts for such purposes. Within 45 days of the public hearing, due notice shall be conspicuously posted at the park being acquired, including along its exterior boundaries, at all entrances, and on the recreation building, if any exists. Any resident of the operating entity may bring an action in the superior court of the county in which the park is located for determination of whether such agreement complies with the requirements of Section 5405 or Section 5407.2. If no such agreement has been entered into within six months after the receipt of such offer, either party may submit a proposal for compensation or land, or both, to the superior court of the county in which the park to be acquired is located for the determination of proper compensation. The court may reject any such proposal as not meeting the requirements of Section 5405 or Section 5407.2. The court may approve only one proposal as meeting such requirements.
Ca. Pub. Res. Code § 5406