Cal. Health and Safety Code § 43028

As an alternative to any civil penalties prescribed under this part, the state board may impose administrative civil penalties for a violation of this part, or any rule, regulation, permit, variance, or order of the state board, pertaining to fuel requirements and standards, if the state board has adopted rules and regulations specifying procedures for the imposition and amounts of those penalties. No administrative civil penalty levied pursuant to this section shall exceed twenty-five thousand dollars ($25,000) for each day on which there is a violation or three hundred thousand dollars ($300,000) in total. However, nothing in this section restricts the authority of the state board to negotiate mutual settlements under any other penalty provision of law which exceed twenty-five thousand dollars ($25,000) for each day on which there is a violation or three hundred thousand dollars ($300,000) in total, except that the state board shall not rely on any provision of the Business and Professions Code.