Evaluation of Soil Flushing for Application to the Deep Vadose Zone in the Hanford Central Plateau

Technical Report · Mon Nov 01 04:00:00 EDT 2010

DOI:https://doi.org/10.2172/1004830· OSTI ID:1004830

Truex, Michael J; Oostrom, Martinus; Zhang, Z F; Carroll, Kenneth C; Schramke, Janet A; Wietsma, Thomas W; Tartakovsky, Guzel D; Gordon, Kathryn A; Last, George V

Soil flushing was included in the Deep Vadose Zone Treatability Test Plan for the Hanford Central Plateau as a technology with the potential to remove contaminants from the vadose zone. Soil flushing operates through the addition of water, and if necessary an appropriate mobilizing agent, to mobilize contaminants and flush them from the vadose zone and into the groundwater where they are subsequently captured by a pump-and-treat system. There are uncertainties associated with applying soil flushing technology to contaminants in the deep vadose zone at the Hanford Central Plateau. The modeling and laboratory efforts reported herein are intended to provide a quantitative assessment of factors that impact water infiltration and contaminant flushing through the vadose zone and into the underlying groundwater. Once in the groundwater, capture of the contaminants would be necessary, but this aspect of implementing soil flushing was not evaluated in this effort. Soil flushing was evaluated primarily with respect to applications for technetium and uranium contaminants in the deep vadose zone of the Hanford Central Plateau.

• Research Organization: Pacific Northwest National Laboratory (PNNL), Richland, WA (US)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-76RL01830
• OSTI ID: 1004830
• Report Number(s): PNNL-19938; 830403000
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
EVALUATION
Hanford Central Plateau
SIMULATION
SOILS
TECHNETIUM
URANIUM
WATER
WATER INFLUX
deep vadose zone
soil flushing