Solidification/stabilization of metals and explosives in soils
- Army Corps of Engineers Waterways Experiment Station, Vicksburg, MS (United States)
- Army Corps of Engineers, Seattle, WA (United States)
- Environmental Protection Agency Region 10, Portland, OR (United States)
This paper describes two treatability studies for concurrent stabilization/solidification (S/S) of metals and explosives in soils from Open Burning/Open Detonation (OB/OD) activities at an Army site in eastern Oregon. These treatability studies address the destruction and removal efficiencies (DRE), a CERCLA measure of treatment feasibility, and also the ability of the formulations to meet site-specific leachate remediation goals for the treated soils. The untreated site soils exceeded the leachate remediation goals (measured on Toxicity Characteristic Leachate Procedure extracts) for the following compounds: cadmium, lead, Royal Demolition Explosive (RDX), 2,4,6-trinitrotoluene (2,4,6-TNT), and 1,3,5-trinitrobenzene (1,3,5-TNB). Treatability study results indicate that S/S is effective for cadmium and lead by a 30% cement + 10% flyash + 40% soil formulation. However, the explosives compounds, RDX and 2,4,6-TNT, met neither DRE goals nor leachability requirements. Success in removing explosives was achieved by modifying the cement/flyash mixture with an organic binding agent (granular activated carbon) in a slurry with the soil prior to addition of the cement/flyash. A compositing technique for sampling and extraction of solidified soils was developed to better represent the average condition of the stabilized soils. The remedial activity will also sift and blend site soils to assure the process meets performance-based leachate goals.
- OSTI ID:
- 422833
- Report Number(s):
- CONF-9605266--
- Country of Publication:
- United States
- Language:
- English
Similar Records
Full scale remediation of an explosives-contaminated site at Yorktown Naval Weapons Station using the SABRE{trademark} process
Biotreatment of explosive contaminated soils