First Demonstrated In Situ Treatment Solution For PFOA/PFOS At Former Industrial Site

pfas treatmentThis case study reviews a site impacted with petroleum hydrocarbons, perfluorooctane sulfonate (PFOS), perfluorooctanoic acid (PFOA), and other perfluoroalkyl sulfonates (PFAS). A single application of PlumeStop resulted in a significant reduction of contaminant concentrations to below standards for 18+ months since the injection. Modeling indicates that the PlumeStop application event should keep the PFAS contained within the source area for upwards of 100 years. Details of the remedial design approach are provided along with results of its implementation.

This case study features the following:

  • A single-injection of PlumeStop successfully immobilized TPH, PFOS, and PFOA in a source area and a down-gradient plume
  • Eliminated future risk to public health as groundwater contaminants were contained, eliminating route of exposure
  • Modeling indicates that PFOS and PFOA should remain contained within the source zone for decades with a single injection
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