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Teaching and research on the fate, transport, and remediation of contaminants in groundwater


Uranium Mobility Project: Graduate students Kendal Hoss (back) and Rakiba Sultana (front) preparing a 200-gallon solution of injection fluid for a single-well push-pull test at a uranium-contaminated field site in Riverton, Wyoming in the summer 2021


Field Methods Course showing students stream gauging on the Milwaukee River at Hubbard Park in Milwaukee, Wisconsin.


Uranium Mobility Project showing laboratory experimental setup of flow-though column device containing uranium-contaminated sediments and groundwater in Grand Junction, Colorado.


Uranium Mobility Project showing: plan-view map of experimental well gallery in Riverton, Wyoming (upper left), time series of the center of mass (COM) of solute tracers iodide and pentafluorobenzote from injection well 1001 (upper right), straight-line/one-dimensional displacement of the tracer COM versus time with linear regression (LinFit) to estimate the magnitude of the true groundwater velocity (v) (lower left), and finite-difference numerical model of drift-phase breakthrough curves at the injection well 1001 with a model fit of v=0.6 feet per day and in good agreement with the true v of 0.53 feet per day (lower right).


Road Salt Project showing mass discharge of chloride and stream flow data from the rural site on the Root River near Racine, Wisconsin; preliminary data analysis suggests that residual road salt is stored in the subsurface, presumably groundwater, during the summer and fall months and is mobilized during heavy precipitation events.  A short article on this project can be found at this LINK