Cal. Health & Safety Code § 25187
(a)
(b) The department or a unified program agency, in accordance with subdivision (l), may issue an order requiring corrective action whenever the department or unified program agency determines that there is or has been a release, as defined in Part 2 (commencing with Section 78000) of Division 45, of hazardous waste or constituents into the environment from a hazardous waste facility.
(1) In the case of a release of hazardous waste or constituents into the environment from a hazardous waste facility that is required to obtain a permit pursuant to Article 9 (commencing with Section 25200), the department shall pursue the remedies available under this chapter, including the issuance of an order for corrective action pursuant to this section, before using the legal remedies available pursuant to Part 2 (commencing with Section 78000) of Division 45, except in any of the following circumstances:
(f) Except as provided in subparagraph (B) of paragraph (2), a person requesting a hearing on an order issued by a unified program agency may select the hearing process specified in either paragraph (1) or (2) in the notice of defense filed with the unified program agency pursuant to subdivision (d). Within 90 days of receipt of the notice of defense by the unified program agency, the hearing shall be conducted using one of the following procedures:
(2)
(j)
(l) The authority granted under this section to a unified program agency is limited to both of the following:
(p) The department may adopt regulations to implement this section and paragraph (2) of subdivision (a) of Section 25187.1 as they relate to the authority of unified program agencies to issue orders. The regulations shall include, but not be limited to, all of the following requirements: