The Army detected trinitrotoluene (TNT) and cyclomethylenetriamine (RDX) in soil near the TNT Washout Area (designated as SWMU-10), threatening the ground water for 2,500 people who depend on wells within 3 miles of the site.
Approximately 10,000 yards of soil were impacted by TNT and RDX concentrations as high as 2,500 and 1,000 mg/kg, respectively. Pilot-scale soil treatment and a concurrent bench-scale treatment with Daramend® was applied at TEAD SWMU-10 to assess field efficacy of Daramend® for composting site soils for treatment of TNT and RDX. Daramend® was added in a single dose of 3.5 wt% to soil mass upon initiating treatment of each large batch of about 3,000 cubic yards in a large sprung structure.
Plexus Scientific effectively treated soils to remediation goals of 86 mg/kg TNT and 31 mg/kg RDX in a single application cycle. Treatment of the three batches was completed in approximately five months, considerably less than the original estimate of one year with conventional composting.