The Decision, sub-divided into six Parts, deals with the disposal of hazardous waste (HWBS, Hazardous Wastes Burial Sites). The Guidelines include requirements for burial sites in terms of selection and construction, choice of waste for disposal, pre-treatment, indication of wastes that are not likely to be interred. Furthermore, the Guidelines cover also the setting of laboratories where wastes are sampled and analyzed before being disposed of, water drainage systems, machinery and special tool