Cost-effective site cleanup and final closure is your goal.
DBS&A has established a reputation for providing innovative, technically sound, and cost-conscious remediation system design, installation, operation and maintenance, and removal action. We have successfully designed and implemented more than 100 soil and groundwater remediation systems to address soil and groundwater impacted by petroleum hydrocarbons, chlorinated solvents, metals, and mine wastes. DBS&A conducts feasibility studies to evaluate the appropriateness of remedial technologies and to select technologically suitable, cost-effective solutions to subsurface contamination. Our design experience ranges from plans and specifications for simple excavations to complete multi-media extraction and treatment at Superfund sites. Our work has undergone the scrutiny of state regulatory agencies and the Environmental Protection Agency.
DBS&A works with clients to select the appropriate remedial technology to use at a given site taking into account site-specific conditions and regulatory requirements. Remediation systems deployed by DBS&A focus on contaminant removal in the vadose zone with soil vapor extraction and treatment via technologies such as thermal oxidizers, internal combustion engines, and catalytic oxidizers. Where a less aggressive approach is needed, we use bioventing to address landfill issues and shallow soil vapor problems.
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For sites with contaminated groundwater that do not require aggressive mass removal, we install interceptor trenches and rely on bioaugmentation to reduce contaminant levels to the point where monitored natural attenuation is appropriate. Traditional pump and treat can be used, applying air and/or ozone sparging, where necessary. Treatment trains may include packed column air strippers, low-profile diffusers, bioslurry, and granular activated carbon. Where light, non-aqueous phase liquids are present, we also use pneumatic phase-separated hydrocarbon pumping systems.