Cal. Gov't Code § 91007
(a) Any person, before filing a civil action pursuant to Sections 91004 and 91005, must first file with the civil prosecutor a written request for the civil prosecutor to commence the action. The request shall include a statement of the grounds for believing a cause of action exists. The civil prosecutor shall respond to the person in writing, indicating whether the civil prosecutor intends to file a civil action.
(b) Any person filing a complaint, cross-complaint, or other initial pleading in a civil action pursuant to Section 91003, 91004, 91005, or 91005.5 shall, within 10 days of filing the complaint, cross-complaint, or initial pleading, serve on the commission a copy of the complaint, cross-complaint, or initial pleading or a notice containing all of the following: