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    PFAS Removal from Aquifer at Hazardous Site Where AFFF Was Used

    This case study reviews an ongoing Pennsylvania Hazardous Site Cleanup Act (HSCA) project where aqueous film-forming foam (AFFF) extinguished a large fire in the 1980s was the target of an innovative pilot study to address per- and polyfluoroalkyl substances (PFAS).

    Working closely on behalf of the PADEP, Tetra Tech, a leading provider of consulting, engineering, and technical services worldwide, was principally involved in assessing the options and choosing a technology for the pilot test. This effort led to the decision to conduct a pilot study using PlumeStop®, a patented colloidal activated carbon amendment known to eliminate the risk of PFAS.

    PFAS remediation

    Case study highlights:

    • Total PFOS and PFOA reduced from 91,400 to <50 ng/L in one month
    • Injection testing effectively used for design confirmation in PlumeStop PFAS remediation pilot study
    • Application included innovative injection using straddle packer system to isolate vertical zones
    Read the Case Study

    8m 46s reading time