A. It is unlawful for any person, firm or corporation to transport, to deliver, unload or transfer at any point within the City any gasoline, kerosene or other inflammable or combustible substance in or from a tank, tank truck, transport or vehicle. However, such transporting, delivering, unloading or transferring may be done with and from a tank truck if the following safety precautions are observed:
1. The tank vehicle during unloading or loading must have the driver thereof in attendance at the shutoff valve at all times during such operation;
2. No person shall smoke or be permitted to smoke in the vicinity of such vehicle during the unloading or transferring operations; and
3. No unloading or transferring from any tank truck shall be made to any storage tank within the fire limits unless such storage tank has above the ground level a vent pipe of at least eight feet (8') in height. (1983 Code)