It is unlawful for any person to haul, convey or transport through or upon any of the public streets in Midvale City any garbage, ashes, market wastes, trade wastes, manure, night soil, loose paper, scrap paper, excelsior, tree limbs, bush clippings, lawn clippings, house refuse, yard refuse, liquid wastes or any other refuse materials in open trucks, open trailers or other open conveyances, unless covered completely by a heavy duty canvas or other similar material which shall prevent the spillage or blowing of any materials from said vehicles at all times when the vehicles are being used for the collection of or carrying, transporting or hauling of any of the foregoing. (Ord. 8/27/2002B (part))