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EFFECTIVENESS OF COLLOIDAL ACTIVATED CARBON AS AN IN SITU TREATMENT TO MITIGATE PFAS
Wilson, S., K. Thoreson, and P. Lyman. | The PFAS Management, Mitigation, and Remediation Conference, 19-20 June, Westerville, Ohio, 2019, abstract only

The Michigan Department of Military and Veteran Affairs (DMVA) have been remediating chlorinated solvents in groundwater from historical operations at the Grayling Army Airfield facility since the 1990s. In 2016, the DMVA found PFAS commingled with a PCE plume that was migrating toward the property boundary. The DMVA pilot tested an in situ reactive barrier application of colloidal activated carbon, selected because of the expected rapid reductions of PFAS by removal from the dissolved mobile phase and its cost-effectiveness. After 170 days, PFAS concentrations were reduced from >80 ng/L to <5 ng/L and PCE concentrations were reduced from >5 µg/L to <2 µg /L in downgradient wells. See project slides by P. Lyman and R. Moore: https://static1.squarespace.com/static/584f2c26197aea4b23515113/t/5d02977d06eb890001234fd7/1560450952039/AIPG-Regenesis-MVA-final.pdf Also see https://www.michigan.gov/pfasresponse/0,9038,7-365-86511_82704_84187---,00.html



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