Pub. Resources Code, § 72430

(a) A person who violates Section 72420 or 72420.2 is subject to a civil penalty of not more than twenty-five thousand dollars ($25,000) for each violation.

(b) The civil penalty imposed for each separate violation pursuant to this section is separate from, and in addition to, any other civil penalty imposed for a separate violation pursuant to this section or any other provision of law.

(c) In determining the amount of a civil penalty imposed pursuant to this section, the court shall take into consideration all relevant circumstances, including, but not limited to, the nature, circumstance, extent, and gravity of the violation. In making this determination, the court shall consider the degree of toxicity and volume of the release, the extent of harm caused by the violation, whether the effects of the violation may be reversed or mitigated, and with respect to the defendant, the ability to pay, the effect of a civil penalty on the ability to continue in business, all voluntary cleanup efforts undertaken, the prior history of violations, the gravity of the behavior, the economic benefit, if any, resulting from the violation, and all other matters the court determines justice may require.

(d) (1) A civil action brought under this section may only be brought in accordance with this subdivision. That civil action may be brought by the Attorney General upon complaint or request by the Department of Fish and Game or the appropriate California regional water quality control board, or by a district attorney or city attorney.

(2) Notwithstanding Section 13223 of the Water Code, a regional water quality control board may delegate to its executive officer authority to request the Attorney General for judicial enforcement under this section.

(3) If a district attorney or city attorney brings an action under this section, the action shall be in the name of the people of the State of California.

(4) An action relating to the same violation may be joined or consolidated.