Cal. Health & Safety Code § 18020
(b) The department may, at the department’s sole option, enforce Chapter 4 (commencing with Section 18025) and the rules and regulations adopted pursuant to Chapter 4 through department-approved third-party entities. The department shall adopt regulations for the approval of third-party entities, including, but not limited to, all of the following criteria:
(d) The department shall monitor the performance of third-party entities approved pursuant to subdivision (b) and shall require periodic reports in writing containing information that the department may reasonably require to determine compliance with the conditions of the department’s approval.
(e)