California Code, Health and Safety Code - HSC § 106879

(a) The state board may administratively impose civil liability pursuant to this article or, upon the request of the state board, the Attorney General may impose civil liability pursuant to this article in an action in superior court. The state board may impose civil liability administratively in accordance with Article 2.5 (commencing with Section 13323) of Chapter 5 of Division 7 of the Water Code.

(b) A remedy described in this article is in addition to, and does not supersede or limit, any other remedy, civil or criminal, except that civil liability may not be imposed both administratively and by the superior court for the same violation.