Flux measurements as missing piece of the complex contamination puzzle: What – Why – How?
Most decisions regarding contaminated groundwater sites are driven by contaminant concentrations. These decisions can be improved by also considering contaminant mass discharge and mass flux. Mass discharge and flux estimates quantify source or plume strength at a given time and location. Consideration of the strength of a source or solute plume (i.e., the contaminant mass moving in the groundwater per unit of time) improves evaluation of (stimulated) natural attenuation and assessment of risks posed by contamination to downgradient receptors, such as living areas, supply wells or surface water bodies.
At this workshop you will learn everything about the use of groundwater and contaminant flux measurements during soil and groundwater research. We consider the principle of a flux measurement (why it is more than just a time-averaged concentration?) and how to apply it specifically in both the investigation and remediation phase. We aim for a hands-on course based on real cases and different approaches (making use of Passive Flux Sampling, Point Velocity Probe and Finite Volume Point Dilution Method) while we will listen to your experience and questions concerning the mass flux concept.
1:30 – 1:40 pm Introduction
1:40 – 2:00 pm Methodologies for mass flux determination (Goedele Verreydt, iFLUX)
2:00 – 2:30 pm Transect method, PVP and uncertainties (Poul L. Bjerg, DTU)
2.30 – 2.45 pm Coffee Break
2.45-3.15 pm FVPDM method (Serge Brouyère/Pierre Jamin, ULiège)
3:15 – 3:45 pm iFLUX method (Goedele Verreydt, iFLUX)
3.45-4.00 pm Coffee break
4.00 – 4:30 pm Applications of contaminant mass discharge: monitoring of remedial actions and mass discharge to streams (Poul L. Bjerg, DTU)
4:30 – 4:55 pm Soil Gas flux monitoring for Natural Source Zone Depletion follow-up (Julio Zimbron, E-flux)
4:55 – 5:00 pm Wrap-up & Acknowledgments