HR: 0830h
AN: H31B-0474    [PDF]
TI: Demonstration and Validation of a Passive Flux Meter under Controlled Field Conditions
AU: * Sun, Q
EM: qingsuny@ufl.edu
AF: Department of Civil and Coastal Engineering, University of Florida, Gainesville, FL 32611 United States
AU: Hatfield, K
EM: khatf@ce.ufl.edu
AF: Department of Civil and Coastal Engineering, University of Florida, Gainesville, FL 32611 United States
AU: Annable, M
EM: annable@ufl.edu
AF: Department of Environmental Engineering Sciences, University of Florida, Gainesville, FL 32611 United States
AU: Cho, J
EM: jaehyunc@ufl.edu
AF: Department of Environmental Engineering Sciences, University of Florida, Gainesville, FL 32611 United States
AU: Parker, B
EM: cherryja@uwaterloo.ca
AF: Department of Earth Sciences, University of Waterloo, Waterloo, ON N2L 3G1 Canada
AU: Cherry, J
EM: cherryja@uwaterloo.ca
AF: Department of Earth Sciences, University of Waterloo, Waterloo, ON N2L 3G1 Canada
AB: Subsurface contaminant mass flows and fluxes are increasingly being viewed as critical information needed to address issues pertinent to aquifer and groundwater remediation. Theses issues include; source prioritization, risk prediction, compliance monitoring, remediation endpoint evaluation, and contaminant attenuation assessment. Field experiments were conducted to demonstrate and validate a passive flux meter (PFM), which is a down-hole monitoring technology that provides for simultaneous, direct, in situ, point measurements of cumulative or time-averaged contaminant mass flux and water flux. The experiments were conducted in a subsurface flume located at the Base Borden Test facility in Ontario, Canada. The sheet-pile enclosed flume was 15-m long and 2 m wide. Steady flow was established using four pumping wells located in the closed end of the flume. Flow rates and contaminant concentrations measured at the producing wells provided estimates of average groundwater and contaminant fluxes within the flume. Flux estimates were compared to direct measurements obtained from 6 flux meters and to calculated fluxes generated from multilevel samplers. Fuzzy analysis was used to characterize the uncertainty in MTBE mass flow and flux estimates generated from spatially integrating PFM measurements.
DE: 1829 Groundwater hydrology
DE: 1831 Groundwater quality
DE: 1832 Groundwater transport
DE: 1894 Instruments and techniques
SC: Hydrology [H]
MN: 2003 Fall Meeting