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CONTAINMENT TECHNOLOGY AND MONITORING
Citation:
Beljin, M. AND R R. Ross*. CONTAINMENT TECHNOLOGY AND MONITORING. Presented at Abiotic In-Situ Technologies for Groundwater Remediation, Dallas, TX, 8/31-9/2/1999.
Description:
Subsurface vertical barriers have been used to control ground-water seepage in the construction industry for many years. Recently, much attention has been focused on the use of containment technologies as supplemental and stand-alone remedial options for hazardous waste sites to prevent or reduce the impact of contaminant sources on ground-water resources. Containment systems can be classified as active (e.g., ground-water extraction to control hydraulic gradient) or passive (e.g., physical barriers only). Frequently, containment systems employ a combination of active and passive components, depending on the remedial objectives and complexity of the hydrogeologic setting. Such systems commonly incorporate low permeability vertical barriers (walls) keyed into an underlying aquitard (floor), a low permeability cover (cap) to prevent the infiltration of precipitation, extraction and/or injection wells, trenches, and a network of monitoring wells.