An Operational Permit is required to engage in the business of an aircraft fueling station. An aircraft fueling station is that portion of a premises which handles the transfer of flammable or combustible liquids or liquefied flammable gas into or from an aircraft or fueler. It includes the pumps, underground piping and main storage tanks used to store and dispense the fuels. Only one permit is required for all buildings, structures or space owned by the same person at the same location.