Cal. Health & Safety Code § 78930
(c)
(d) The department or regional board shall provide any person affected by a response action undertaken for sites listed pursuant to Article 5 (commencing with Section 78760) of Chapter 4 with the opportunity to participate in the department’s or regional board’s decisionmaking process regarding that action by taking all of the following actions:
(1) Provide access to information that the department or regional board is required to release pursuant to the California Public Records Act (Division 10 (commencing with Section 7920.000) of Title 1 of the Government Code), relating to the action, except for the following: