Good question on the storage. It seem you can store 5 gal containers anywhere (metal for 116). I live in a small community so if anybody gave me a problem I would store on farmland. (Above ground tank) It will be stored by the garage door away from the house. Really a 55 gal drum that has to be sealed (or the gas goes bad, do not leave your pump in the drum) is pretty darn safe. In my younger days I worked in the oil field and we had stuff that if pored in open air would ignite or my normal job of hauling 4000 gals of sulfuric acid around, so this stuff does not scare me at all. You always have to use common sense, well ventilated, no open flames, ect. If you have a friend that is a fireman he can tell you what you local rules will or will not allow.