Challenging Fast-Moving, High Concentration Chlorinated Solvent Plume Effectively Treated

Case study highlights:

• PlumeStop PRB treats CVOCs for >3 years in high-mass-flux aquifer
• Design Verification Testing (DVT) used passive flux samplers (PFS) to better understand contaminant mass flux
• Permeable reactive barrier installed using advanced colloidal technologies demonstrates pilot test’s effectiveness

A permeable reactive barrier (PRB) incorporating PlumeStop® and S-MicroZVI® technologies was applied to a fast-moving, high-concentration chlorinated solvent plume in groundwater as part of an initial field-scale application to assess the approach’s effectiveness. Within a month of the application, the highest concentrations were reduced by 98 percent. The single injection
has maintained at least 99% reductions of chlorinated ethenes for 3.5 years in the barrier treatment wells. Hamp, Mathews & Associates, Inc. (HMA), working on behalf of EGLE,
collaborated with REGENESIS for developing a remedial approach to address the contaminant plume.