Our confidential client engaged SCS Engineers and SCS Field Services, our construction and O&M divisions, to perform the remedial engineering design and construction of a 3.7-acre site requiring soil stabilization where a waste water lagoon once existed.
The excavation contained 27,000 tons of soil impacted with cadmium concentrations greater than 1 milligram per liter (mg/L). Soils with these concentrations are subject to RCRA standards. Therefore, these soils were stabilized in-place using Portland cement to render them non-hazardous for disposal at a local landfill. The Portland cement was placed in thin lifts and blended with road stabilizer. The remedial construction for the site included the following activities:
Design, specifications and workplans
Health and safety monitoring
Permits from the city, flood control, county and state
Install stormwater best management practices
Demolish and remove above ground structures from the excavation area
Recycle asphalt in the excavation area
Remove base-rock and other potential base materials
Remove and dispose of soils containing non-hazardous concentrations of cadmium at concentrations greater than 40 milligrams per kilogram (mg/kg)
Dewatering
Confirmation sampling and analysis
Air monitoring
Stabilizing soils containing hazardous levels of cadmium using Portland cement prior to removal and disposal
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greater than 1 milligram per liter (mg/L). Soils with these concentrations are subject to RCRA standards. Therefore, these soils were stabilized in-place using Portland cement to render them non-hazardous for disposal at a local landfill. The Portland cement was placed in thin lifts and blended with road stabilizer. The remedial construction for the site included the following activities:
