INQUIP has considerable experience working on hazardous and toxic waste sites. These projects either involve the remediation or closure of the sites and may use one or more of our specialty geotechnical techniques. Slurry cutoff walls are often used to contain contaminated groundwater and prevent the horizontal migration of leachates, or prevent the infiltration clean groundwater. Collection/extraction trenches constructed by the Bio-Polymer technique are used to collect and extract leachate. Other INQUIP techniques such as grouting, HDPE curtain walls, and stabilization have also been successful used to contain pollution.

Proper planning and engineering are a requirement on all pollution containment projects. The chemistry of the leachate may effect the cutoff wall backfill mix and the bentonite slurry and these are normally tested prior to construction for compatilility. Groundwater flow may change after the installation of a slurry wall, so groundwater modeling is often used to evaluate groundwater control schemes. With proper planning, containment is often the most economical and lowest risk approach for pollution control.

Combinations of geotechnical techniques are commonly used to minimize costs and optimize the construction of a pollution containment. The combination of a slurry cutoff wall with groundwater wells or collection trenches, capped with a barrier membrane, is often the most acceptable and economical method for groundwater containment. When space is limited, groundwater barriers and extraction can be combined in a single trench fitted with a HDPE curtain wall, aggregate, and extraction wells or piping. On difficult sites, problem soils or sludges may be stabilized to reduce the generation of leachates, and then contained with a slurry cutoff wall and less extensive groundwater controls.

INQUIP specializes in creating innovative and cost effective systems and combinations of techniques for pollution containment.

INQUIP is available to discuss your project and to provide for your consideration specific constructability information and budget costs. Please contact any of our regional offices for moreinformation.

IIf you have an immediate or future application for any of our specialty construction techniques, please contact us. If you need additional information please e-mail us at: info@inquip.com, or call one of our offices.


Eastern Region: P.O. Box 6277, Mclean, VA 22106
TEL: (703) 442-0143, FAX: (703) 442-0188

Western Region: P.O.Box 2182 , Santa Barbara, CA 93120
TEL: (805) 687-2007, FAX: (805) 682-0396