California Code, Public Resources Code - PRC § 30810

(a) If the commission, after public hearing, determines that any person or governmental agency has undertaken, or is threatening to undertake, any activity that (1) requires a permit from the commission without securing a permit or (2) is inconsistent with any permit previously issued by the commission, the commission may issue an order directing that person or governmental agency to cease and desist. The order may also be issued to enforce any requirements of a certified local coastal program or port master plan, or any requirements of this division which are subject to the jurisdiction of the certified program or plan, under any of the following circumstances:

(b) The cease and desist order may be subject to such terms and conditions as the commission may determine are necessary to ensure compliance with this division, including immediate removal of any development or material or the setting of a schedule within which steps shall be taken to obtain a permit pursuant to this division.

(c) Notice of the public hearing on a proposed cease and desist order shall be given to all affected persons and agencies and the order shall be final and effective upon the issuance of the order. Copies shall be served immediately by certified mail upon the person or governmental agency subject to the order and upon other affected persons and agencies who appeared at the hearing or requested a copy. The notice shall include a description of the civil remedy to a cease and desist order, authorized by Section 30803.