Recent research efforts have shifted from a focus on contaminant concentration in soil and water, for site characterization and remedial performance assessment, to one based on contaminant mass flux and discharge. The shift has lead to advances in our ability to collect data on contaminant mass flux and discharge at field sites. The current field methods for measuring mass flux and integrated mass load include traditional transects of wells and multilevel samplers, integral pumping methods and passive flux meters. The generation of spatially discrete contaminant and Darcy flux data has increased our ability to observe flux distributions associated with complex DNAPL source zones. The characteristics of flux distributions from DNAPL contaminated sites and how this information can be used for performance assessment of remedial technologies is the focus of this paper. Changes in mass flux, as a result of remedial activities, has lead to insights on the relationship between flux architecture and source mass removal. This relationship is reviewed in light of available results from both laboratory and field experiments.
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Annable, M.D. (2008). Mass Flux as a Remedial Performance Metric at NAPL Contaminated Sites. In: Annable, M.D., Teodorescu, M., Hlavinek, P., Diels, L. (eds) Methods and Techniques for Cleaning-up Contaminated Sites. NATO Science for Peace and Security Series C: Environmental Security. Springer, Dordrecht. https://doi.org/10.1007/978-1-4020-6875-1_16
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