The dangerous wastes at the site known as the 618-10 Burial Ground stem from the production of plutonium for nuclear weapons and took eight years to clean up, the agency said………
The 580-square-mile site Hanford site is located in southeast Washington state.
During the cleanup, workers retrieved more than 2,200 55-gallon drums, plus other waste, some of it buried more than 20 feet underground.
In total, workers removed more than 512,000 tons of contaminated soil and waste debris, which was taken to Hanford’s hazardous-waste landfill.
The 7.5-acre burial ground contained highly radioactive waste from Hanford laboratories and fuel development facilities in the 1950s and 1960s. Poor record-keeping at the time meant many of the waste types were unknown, the department said……
Hanford was created by the Manhattan Project during World War II as the nation raced to create an atomic bomb. It produced most of the plutonium for the nation’s nuclear arsenal during the Cold War and contains the nation’s largest volume of nuclear waste.
The cleanup work costs more than $2 billion per year and is expected to take decades. The lawmakers said they will press the federal government to continue funding the work.
Progress is being made.
The Energy Department recently announced that it was essentially finished removing radioactive wastes from 16 of Hanford’s 177 underground storage tanks. http://www.startribune.com/workers-finish-cleaning-up-nuclear-burial-ground/461106933/
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