Fuel trucks and refueling units shall be stored outside and not less than fifty feet from a building or such other distance as shall be approved by the Aviation Director except for the accomplishment of minor adjustments or repairs necessary to move such units to the storage area when failure occurs elsewhere on the airport. No fuel truck, or refueling unit, empty or otherwise, shall be brought into, kept, or stored within any building at the airport, unless said building is used exclusively for that purpose. (Ord. No. G-4116, § 2, 1998)