Perched-Water Evaluation for the Deep Vadose Zone Beneath the B, BX, and BY Tank Farms Area of the Hanford Site

Truex, Michael J. ; Oostrom, Martinus ; Carroll, KC ; Chronister, Glen B.

关键词: vadose zone;    perched water;    flux;   

DOI  :  10.2172/1088640
RP-ID  :  PNNL-22499
RP-ID  :  RPT-DVZ-AFRI-013
PID  :  OSTI ID: 1088640
Others  :  Other: 830403000

美国|英语

来源: SciTech Connect

【 摘 要 】

Perched-water conditions have been observed in the vadose zone above a fine-grained zone that is located a few meters above the water table within the B, BX, and BY Tank Farms area. The perched water contains elevated concentrations of uranium and technetium-99. This perched-water zone is important to consider in evaluating the future flux of contaminated water into the groundwater. The study described in this report was conducted to examine the perched-water conditions and quantitatively evaluate 1) factors that control perching behavior, 2) contaminant flux toward groundwater, and 3) associated groundwater impact.