Waste management practices at Hanford are based on 30 years of experience and special studies. Aqueous high-level wastes are being converted to salt cakes in underground tanks to reduce the potential for loss of liquid high-level radioactive waste due to tank failure. If wastes enter the ground they are sorbed in the Hanford sediments and become fixed in place by natural processes. Water from the equivalent of a thousand years of rainfall in one deluge is not likely to move the radioactive materials such as plutonium, strontium, and cesium to the water table.