TRS provides in situ and ex situ heating solutions for the remediation of PFASimpacted soilsIn fact, the U.S. Patent and Trademark Office awarded TRS a patent for our PFAS thermal desorption solutions. Further, our patent-pending FlexHeater® thermal conduction heating (TCH) services can reduce PFAS concentrations by more than 99.99%.


Our patented process involves heating the impacted soils, in situ or ex situ, to temperatures between 300 and 400°C and maintaining the elevated temperatures for up to two weeks. The process is safe and remarkably effective.  


In 2023, the Department of Defense’s Defense Innovation Unit (DIU) awarded TRS its third PFAS thermal desorption project, this one at Joint Base Elmendorf Richardson (JBER) in Anchorage, Alaska. The JBER ex-situ remediation project is significantly larger than the previous two completed by TRS. Construction began in late 2023. We anticipate completing the project in late 2024.

The Department of Defense, through its Environmental Security Technology Certification Program (ESTCP), previously awarded TRS and its collaborators two projects, each focused on the thermal treatment of PFAS-impacted soil: in situ thermal treatment in the vadose zone and ex situ treatment of soil piles.

Thermal Desorption of PFAS in Soil – TRS applied its FlexHeater® TCH service to soil at a fire training site at Beale Air Force Base to reduce PFOA and PFOS levels below U.S. EPA RSLs (126 μg/kg). View the case study

PFAS Removal from a Soil Stockpile Using TCH – TRS used its FlexHeater® TCH service to remove PFOA and PFOS to below detection limits in the middle of an Alaskan winter. View the case study

Emily Crownover, Managing Principal Engineer, leads a tour at Eielson Air Force Base in Fairbanks, Alaska, where TRS is using thermal remediation on PFAS containing ex situ soil stockpiles (pictured in the background).
PFAS remediation in soil site tour demo day in Alaska

TRS personnel lead a tour at Eielson Air Force Base in Fairbanks, Alaska, where TRS used its TCH technology on PFAS containing ex situ soil stockpiles.

Additional PFAS Remediation Resources