California Code, Public Resources Code - PRC § 43215

(a) If the board, in conducting the inspection and performance review required pursuant to Section 43214 or this section, finds that the enforcement agency is not fulfilling one or more of its responsibilities, the board shall notify the enforcement agency of the particular reasons for finding that the enforcement agency is not fulfilling its responsibilities and of the board's intention to withdraw its approval of the designation if, within a time to be specified in that notification, but in no event less than 30 days, the enforcement agency does not take the corrective action specified by the board.

(b) The board shall adopt regulations that establish a process for notice, public hearing, the admission of evidence, and final action by the board for partial or full withdrawal of the approval of designation pursuant to this chapter.