be left unattended at a bulk plant during the loading or unloading <br /> process. Loading and unloading shall not be considered complete <br /> until the delivery hose is detached from vehicle and tanks. <br /> 5.4.3.2. Every tank motor vehicle must have the tank <br /> grounded and the nozzle grounded before loading and unloading. <br /> 5.4.3.3. Persons or companies using any bulk plant are <br /> responsible for keeping the yards and the area three feet (3') <br /> outside the yard fences free of weeds, trash and other debris. <br /> 5.4.3.4. Tanks at bulk plants shall not be filled to the <br /> point where they will overflow from heat expansion. Tanks must <br /> be equipped with an overflow warning device or other system de- <br /> signed to prevent overflow. <br /> 5.4.3.5. All loading platforms and fill nozzles will be <br /> equipped with proper grounding devices and flexible cables. <br /> 5.4.3.6. Strict controls to detect fuel leakage or losses <br /> shall be used. Records of such controls shall be available for <br /> inspection by the Airport Manager. <br /> 5.4.4 Starting of Engines Near Fuel Spill Prohibited. No person <br /> shall start the engine or engines of any aircraft at the Airport when <br /> there is gasoline or any type of fuel on the ground under the aircraft. <br /> In the event gasoline or any fuel spills, no person shall start an air- <br /> craft engine in the area of the spillage until the spillage is flushed. <br /> 5.4.5 Liabilit for Im ro er Fuelin The City assumes no lia- <br /> bility for improper fue ing or use of wrong fuel for an aircraft by any <br /> fuel provider at the Airport. <br /> 6. PERMITS - GENERAL RULES. <br /> 6.1 Permission for Activities at Air ort Re wired. No person shall <br /> conduct commercia operations or engage in aeronautical activity at the Air- <br /> port, use the Airport as a base for the conduct of business, or otherwise <br /> provide services or goods to travelers, customers, a permittee or a lessee <br /> at the Airport, without obtaining a permit or lease from the Airport Manager <br /> in the manner provided for under these rules. The duty to obtain a permit <br /> for supplying services or goods to a single permittee or lessee may be waived <br /> by the Airport Manager if the extent of the activity is not substantial. <br /> 6.2 Relationshi of Permit or Lease to Rules. Unless otherwise agreed, <br /> all permits and eases sha be subject to compliance with the requirements <br /> of these rules, the rules regarding issuance and revocation of leases and <br /> permits, and the Airport Master Plan and Airport Layout Plan. The Airport <br /> <br /> Manager may waive in writing all or any portion of the general or minimum <br /> standards set forth below when the Airport Manager deems such waiver to be <br /> in the best interest of the Airport's operation. The length of the waiver <br /> period shall be specified in a written agreement. <br /> Rules - 16 <br /> <br />