A patented colloidal activated carbon technology that adsorbs groundwater contaminants, including PFAS and CVOCs, directly in situ—immobilizing them and reducing risk.
Proven, fast, & cost-effective
PlumeStop® is an injectable colloidal activated carbon technology that rapidly captures and biodegrades a wide range of contaminants including PFAS and CVOCs. It distributes easily under low pressures to effectively halt contaminant migration, addresses back-diffusion, and protects sensitive receptors.
What is it?
PlumeStop is a patented in situ remediation technology that uses sub-2-micron activated carbon particles to create a thin, permeable film on aquifer solids. This film rapidly adsorbs groundwater contaminants, including PFAS and CVOCs, reducing their mobility and exposure risk while maintaining natural aquifer permeability.
How does it work?
Once applied, PlumeStop coats aquifer materials with a highly adsorptive carbon layer that captures dissolved contaminants directly in place. For PFAS, this immobilization prevents plume migration. For CVOCs, PlumeStop can be paired with electron donors such as AquiFix or S-MicroZVI to stimulate sustained biodegradation, which regenerates sorption sites and extends treatment performance.
Is it right for my site?
PlumeStop is effective at a wide range of contaminated sites, including industrial facilities, airports, federal installations, and military bases. It is well-suited for projects requiring rapid risk reduction, long-term protection, and a sustainable alternative to pump-and-treat.
PlumeStop resources
PlumeStop® Used To Treat PFAS and Protect Community Resources
PlumeStop Cost-Effectively Treats CVOCs at Secure Government Facility
PlumeStop and S-MicroZVI Applied to Successfully Remediate Large TCE Plume
PlumeStop used to treat PFAS and protect community resources
"We selected PlumeStop because it didn't have ongoing operation and maintenance costs. It goes in the ground and it's doing its job."
— Ron Myrick, Vice President
Typical site applications
Industrial manufacturing
Airports
Defense sites
Federal
Dry cleaning
Interested in learning more about PFAS treatment?
The four PlumeStop treatment mechanisms
The four PlumeStop® treatment mechanisms—dispersion, sorption, biodegradation, and regeneration—work together to deliver effective, long-lasting remediation.
PlumeStop is a liquid activated carbon™ material which consists of a very fine suspension of charged particles which resists clumping and has a water-like viscosity. As a result, PlumeStop is easily applied into the subsurface through gravity-feed or low-pressure injection.
Dispersion within the Subsurface
Upon reagent injection, target contaminants partition out of the aqueous phase and sorb onto the liquid activated carbon™ matrix, thereby removing mobile contaminants from the immediate risk pathway. Concentration of the contaminants in this manner, in a matrix conducive to degrader colonization and activity, results in a direct increase in efficiency of contaminant destruction.
Rapid sorption of dissolved-phase contaminants
Once in place and with contaminants partitioned onto its surface, PlumeStop is colonized by contaminant-degrading bacteria.
Biodegradation of contaminants within the matrix
Enhanced biodegradation of contaminants within the biomatrix regenerates or frees up sorption sites allowing contaminants to further partition out of the groundwater. This allows a single application of PlumeStop to remain functional for an extended/ indefinite period of time.