California Code, Public Utilities Code - PUC § 4361

(a) In each mobilehome park, the operator shall post on the mobilehome park premises the current emergency telephone numbers for, at a minimum, the gas company, the fire department, and the responsible person as defined by Section 18603 of the Health and Safety Code, and shall maintain on the mobilehome park premises an emergency procedure, which shall be used in the event there is a gas leak or other safety hazard in the gas distribution system. The operator is required to inform each of the tenants of the mobilehome park of the location of these emergency telephone numbers and the emergency procedure.

(b) Any operator who fails to comply with subdivision (a) shall be subject to the same penalty as set forth in subdivision (a) of Section 4357. The commission shall enforce this subdivision pursuant to subdivision (b) of Section 4357.