Cal. Pub. Res. Code § 5865
(c)
(1) If the department determines that the property meets the state significance criteria in Section 5868, the department shall notify the owner in writing of that determination. The department shall include in the notice, all of the following:
(2)
(A) The department shall also notify appropriate interested parties of the determination as the director deems appropriate, including all of the following:
(B) The notice shall include both of the following: