The use of Colloidal Activated Carbon (CAC) technology to remediate PFAS (per- and polyfluoroalkyl substances) is becoming a widely adopted strategy to effectively contain PFAS impacts in situ (i.e., in place) and eliminate the exposure risk upstream of domestic water supply wells, surface waters, and other sensitive receptors. When deploying this remedy, understanding the aquifer zones PFAS contaminants are moving through (i.e., mass flux zones-see Figure 1) to optimize performance efficiency and reduce project costs is of great value to the overall success of the project.
The FluxTracer® Flux Mapping Tool is a flux measuring device used to accurately measure contaminant mass flux—the product of the contaminant concentration and groundwater flux (or Darcy velocity)—before implementing an in situ remedy. Previously available for chlorinated volatile organic compounds (CVOCs), the tool is now available to measure PFAS mass flux using DEXSORB® for PFAS.