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.
Tooele Army Depot- TNT Washout Facility/SWMU-10
Plexus Scientific Corporation; Client: MWH Constructors, Inc. under contract to the US Army Corps of Engineers (USACE)
Tooele, Tooele County, Utah
TNT, RDX
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.
With a total treatment time of 3 months, the application of Daramend reagent reduced concentrations of PCE and TCE below the remedial standards at this site in the northwest USA.
Daramend® was applied first to a two-acre pilot project, and then to an additional 32 acres. The treatment successfully destroyed the concentrations of organochlorinated contaminants on time and on budget.
Daramend® reagent was the selected technology at a site for the treatment of 350 tons of soil impacted by phenoxy-acid herbicides (2,4-D, and 2,4,5-T), and other chlorinated pesticides (DDT, DDD, and DDE).
With nine years of data Daramend® addressed long-term mitigation of vapor pathway concerns over exposed areas containing concentrations of dissolved VOCs.
A 2,600-ton in situ pilot was conducted at a site in Florida using Daramend® Reagent achieving remedial goals within 3 weeks.
