It shall be unlawful for any person, firm or corporation to keep or store any petroleum, naphtha, benzine, gasoline, kerosene, fuel oil or any of the combustible products of petroleum or any combustible liquid or gas of any kind whatsoever, within the boundaries of the town of Pioche otherwise than in tanks, barrels or other EPA approved containers buried at least three feet (3') underground. Provided, that this section shall not apply in the case of crude oil, distillate or fuel oil in EPA approved containers of five hundred (500) gallons or less; nor to motor fuel in the process of being used in any motor vehicle; nor in the case of gasoline and other petroleum products in quantities of fifty five (55) gallons or less; nor in the case of flamo, propane, butane and other products of similar nature when used for cooking or for heating in a residential or business building in EPA approved containers of five hundred (500) gallons (or the equivalent in cubic feet) or less. It shall be unlawful, and none of the foregoing provisions shall be interpreted to make it lawful, to keep or store any combustible liquid, gas or petroleum product whatsoever inside any residential or business building in quantity in excess of ten (10) gallons (or its equivalent in cubic feet) excepting this last provision shall not apply to any duly licensed dealer in petroleum products, commercial garage or service station. (1983 Code § 8.48.150; amd. 2003 Code)