California Code, Public Resources Code - PRC § 6342

The commission may enter into boundary line agreements with any person or public entity, describing and defining the boundary line between ungranted tidelands and adjacent uplands owned by such person or public entity.  Such boundary line agreements shall be executed on behalf of the commission, and upon recordation shall be binding and conclusive as between the state and all persons and public entities executing such agreements, and the provisions of subdivision (a) of Section 6339 shall be applicable thereto.