California Code, Health and Safety Code - HSC § 1797.218

Any local EMS agency may authorize an advanced life support or limited advanced life support program which provides services utilizing EMT-II or EMT-P, or both, for the delivery of emergency medical care to the sick and injured at the scene of an emergency, during transport to a general acute care hospital, during interfacility transfer, while in the emergency department of a general acute care hospital until care responsibility is assumed by the regular staff of that hospital, and during training within the facilities of a participating general acute care hospital.