Rainwater exposes waste chemicals at Hanford

FILE- This May 6, 2004 file photo shows workers as they remove waste in an area near two dormant nuclear reactors on the Hanford nuclear reservation, near Richland, Wash. The world's first full-scale nuclear reactor is one stop on tours of the southeastern Washington state reservation created as part of the Manhattan Project to build the atomic bomb. Now, more than two decades after it stopped producing plutonium, Hanford is the nation's most contaminated nuclear site. (AP Photo/Jackie Johnston, FILE)