California Code, Health and Safety Code - HSC § 114143

(a) The open-air barbecue or outdoor wood-burning oven is operated on the same premises as, in reasonable proximity to, and in conjunction with, a permanent food facility that is approved for food preparation, a temporary food facility or a mobile food facility that is operating at a community event, or a catering operation.  The permitholder of the permanent food facility, temporary food facility, mobile food facility, or catering operation shall be deemed to be the permitholder of the open-air barbecue or outdoor wood-burning oven, and shall be responsible for ensuring that it is operated in full compliance with this part.

(b) The open-air barbecue or outdoor wood-burning oven is not operated in, or out of, any motor vehicle, or in any area or location that may constitute a fire hazard, as determined by the enforcement officer.

(c) The open-air barbecue or outdoor wood-burning oven is separated from public access to prevent food contamination or injury to the public by using ropes or other approved methods.

(d) If the open-air barbecue or outdoor wood-burning oven is a permanent structure, it shall be equipped with an impervious and easily cleanable floor surface that extends a minimum of five feet from the open-air barbecue or outdoor wood-burning oven facility on all open sides.

(e) Sanitary facilities, including, but not limited to, toilet facilities and handwashing facilities shall be available for use within 200 feet in travel distance of the open-air barbecue or outdoor wood-burning oven and shall comply with all provisions of this part.