NFPA 30 requires water-reactive materials to be stored away from liquids, and OSHA requires them to be stored away from flammable liquids (29 CFR 1910.106(d)(7)(iv)). How can these requirements be met when many water-reactives are stored under liquids (i.e. sodium metal is commonly stored under mineral oil, paraffin oil, or kerosene)? and do such compounds have to be stored away from water-reactives that are NOT stored under liquid (i.e. sodium borohydride comes as a dry granular solid)?