Radioactive waste cleanup paying off for giant Idaho aquifer
Scientists say radioactive and chemical contamination in a giant aquifer below an eastern Idaho federal nuclear facility has decreased or remained constant in recent years.
A report released earlier this year by the U.S. Geological Survey attributes the decreases to radioactive decay, changes in waste-disposal methods, cleanup efforts and dilution from water coming into the Lake Erie-sized Eastern Snake Plain Aquifer.
The contamination originated at an 890-square-mile U.S. Department of Energy site that includes the Idaho National Laboratory.
The report says contamination levels at all but a handful of nearly 180 wells are below acceptable standards for drinking water as set by the U.S. Environmental Protection Agency.