Cal. Government Code § 8657.5

(a) (1) A private business utilizing the donations system, pursuant to Section 8588.2 that voluntarily and without expectation and receipt of compensation donates services, goods, labor, equipment, resources, or dispensaries or other facilities, in compliance with Section 8588.2, during a declared state of war, state of emergency, or state of local emergency shall not be civilly liable for a death, injury, illness, or other damage to a person or property caused by the private business’s donation of services, goods, labor, equipment, resources, or dispensaries or other facilities. (2) A private business utilizing the donations system, that voluntarily and without expectation and receipt of compensation donates services, goods, labor, equipment, resources, or dispensaries or other facilities, in compliance with Section 8588.2, during an emergency medical services training program conducted by the Office of Emergency Services and a city, a county, or a city and county shall not be civilly liable for damages alleged to have resulted from those training programs, as described in Section 1799.100 of the Health and Safety Code. (b) (1) A nonprofit organization utilizing the donations system, pursuant to Section 8588.2 that voluntarily and without expectation and receipt of compensation from victims of emergencies and disasters donates services, goods, labor, equipment, resources, or dispensaries or other facilities, in compliance with Section 8588.2, during a declared state of war, state of emergency, or state of local emergency shall not be civilly liable for a death, injury, illness, or other damage to a person or property caused by the nonprofit organization’s donation of services, goods, labor, equipment, resources, or dispensaries or other facilities. (2) A nonprofit organization utilizing the donations system, that voluntarily and without expectation and receipt of compensation donates services, goods, labor, equipment, resources, or dispensaries or other facilities, in compliance with Section 8588.2, during an emergency medical services training program conducted by the Office of Emergency Services and a city, a county, or a city and county, shall not be civilly liable for damages alleged to have resulted from those training programs, as described in Section 1799.100 of the Health and Safety Code. (c) A private business or nonprofit organization that discriminates against a victim of an emergency or disaster based on a protected classification under federal or state law shall not be entitled to the protections in subdivision (a) or (b). (d) This section shall not relieve a private business or nonprofit organization from liability caused by its grossly negligent act or omission, or willful or wanton misconduct.