Cal. Health & Saf. Code § 7980
The heirs, relatives or friends of any decedent whose remains have been interred in any cemetery owned, governed or controlled by any religious corporation or by any church or religious society of any denomination or by any corporation sole administering temporalities of any religious denomination, society or church, or owned, governed or controlled by any person or persons as trustee or trustees for any religious denomination, society or church shall not disinter, remove, reinter or dispose of any such remains except in accordance with the rules, regulations and discipline of such religious denomination, society or church.
The officers, representatives or agents of the church or religious society shall be the sole judge of the requirements of the rules, regulations and discipline of such religious denomination, society or church.
Ca. Health and Saf. Code § 7980