Terramend® reagent was selected for the in situ treatment of 14,000 tons of BEHP impacted soil at a former plastics manufacturing facility.
The remedial goal of 210 mg/kg for BEHP had to be achieved in the upper two feet of all impacted areas of the site and some regions of the site also required treatment of PAHs. Over 4 acres of the 12-acre site required treatment, and some treatment activities had to be coordinated with tidal fluctuations, given that the water table was very close to the surface and heavily influenced by the tide. Terramend was applied in situ using a site-specific aerobic protocol.
The mean concentration of BEHP was reduced from 1,250 mg/kg to less than 150 mg/kg after approximately 10 months of active treatment, surpassing the remedial goal of 210 mg/kg. Elevated PAH concentrations were also reduced to below the NJ Department of Environmental Protection criteria.