California Code, Public Resources Code - PRC § 42851

(a) The department may serve an administrative accusation to a person on whom civil liability may be imposed pursuant to this chapter.  The accusation shall allege the acts or failures to act that constitute a basis for liability and the amount of the proposed civil liability.  The accusation shall be served by personal service or certified mail and shall inform the party of the right to a hearing.

(b) Upon receipt by the department of a notice of defense to the accusation, the department shall, within 15 days, schedule a hearing before the director.  The hearing shall be held within 60 days of the scheduling date, unless the party waives the right to a hearing.

(c) If the party waives the right to a hearing, the department shall issue an order setting liability in the amount proposed in the accusation unless the department and the party have entered into a settlement agreement, in which case the department shall issue an order setting liability in the amount specified in the settlement agreement.  If the party has waived the right to a hearing or if the department and the party have entered into a settlement agreement, the order shall not be subject to review by any court or agency.

(d) After conducting the hearing, the director shall, within 60 days after the case is submitted, issue a decision, including an order setting the amount of civil penalty to be imposed, if any.