Cal. Pub. Res. Code § 4152

If a fire patrol for the prevention and suppression of forest fires is maintained by owners of land or by any organization, the director may designate each patrol person as a voluntary firewarden and, for the protection of lands patrolled by them or adjacent to those lands, may give them all the rights and powers of a voluntary firewarden. Voluntary firewardens shall be paid by the owners or organizations or as provided for by Section 4151. The firewardens do not have authority to obligate the state for the payment of money, unless specifically authorized by the director.