SANTA ANA PUEBLO, N.M. — The Department of Energy’s Office of Legacy Management is reassessing its reliance on natural attenuation at some uranium legacy sites after monitoring showed the approach is not meeting cleanup targets, a senior official said. William “Bill” Frazier, a program manager with DOE Legacy Management (LM), said the office is evaluating whether additional engineered remedies are needed. Natural attenuation, or intrinsic remed…
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