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theenergynet on 2010-06-28"The Department of Energy is proposing extending a chemical barrier along the Columbia River at Hanford after a pilot project successfully trapped radioactive strontium before it entered the river.
At the same time, a system to pump contaminated water out of the ground and treat it, which had disappointing results, would be torn out.
DOE has been testing the chemical barrier technology since 2005, with the most recent results showing a 90 percent reduction in strontium contamination in ground water, according to DOE.
The test area extends 300 feet along the Columbia near Hanford's N Reactor, but DOE is proposing extending the chemical barrier to 2,500 feet to span the width of the area where strontium exceeds drinking water standards in ground water near the river."