Soils impacted with Polycyclic Aromatic Hydrocarbon (PAH) and Pentachlorophenol were treated in situ and ex situ in an independent study for the US EPA Superfund Innovative Technology Evaluation (SITE) program. Terramend® reagent supported removal of all target compounds in soil at the Domtar Wood Preserving site.
Trenton, Ontario, Canada
PAHs and pentachlorophenol
Soils impacted with wood preserving chemicals were treated in three separate plots, two ex situ and one in situ. The in situ plot had an initial mean PAH concentration of 118 mg/kg. The ex situ plots had an initial mean PAH concentration of 1,774.7 mg/kg and an initial mean chlorophenol concentration of 182.8 mg/kg. Daramend was applied to each plot.
In the ex situ plots, PAH concentrations were reduced by 95% to 95.2 mg/kg and chlorophenol concentrations were reduced by 98% to 3.3 mg/kg. Treatment required 209 days in one ex situ plot, 259 days in the other ex situ plot, and 308 days in the in situ plot. In an evaluation by the US EPA under its SITE program, this project was determined to be among the most effective bioremediation technologies available for use on soils impacted with wood preserving chemicals.
Terramend® reagent was selected for the in situ treatment of 14,000 tons of BEHP impacted soil at a former plastics manufacturing facility.
Terramend® was used to treat 150 tons of sediment dredged from PAH impacted regions of Hamilton Harbor.
Terramend® Reagent was used to remediate approximately 10,500 cubic yards of soil impacted by diesel petroleum hydrocarbon at levels ranging from 500 mg/kg to 3,000 mg/kg.
Approximately 4,000 tons of soil impacted with hydraulic oil and diesel fuel at a former manufacturing facility in Georgetown, Ontario were effectively treated ex situ with Terramend® reagent.
Terramend® was used to treat soil impacted with 40,000 liters of crude oil along a remote stretch of highway north of Perth, Australia. The remediated soil was then used for gravel pit rehabilitation.