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Title: Containment of subsurface contaminants

A barrier is disclosed for reducing the spread of a plume of subsurface contaminants. The apparatus includes a well system for injecting a fluid, such as air, just outside and below the periphery of the plume. The fluid is injected at a pressure sufficient to lower the hydraulic conductivity of the soil from the point of injection to the surface thus establishing a curtain-like barrier to groundwater movement. The barrier is established upgradient of the plume to divert groundwater away, or preferably completely around the plume to reduce the flow of groundwater into or out of the plume. The barrier enables the remediation of the confined contamination and then, when the injection of the fluid is halted, the barrier quickly dissipates. 5 figs.
Inventors:
Issue Date:
OSTI Identifier:
7079274
Assignee:
Dept. of Energy, Washington, DC (United States) PTO; EDB-94-133136
Patent Number(s):
US 5345034; A
Application Number:
PPN: US 8-012864
Contract Number:
AC09-89SR18035
Resource Relation:
Patent File Date: 3 Feb 1993
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; GROUND WATER; WATER POLLUTION ABATEMENT; POLLUTANTS; CONTAINMENT; POLLUTION CONTROL EQUIPMENT; DESIGN; ENVIRONMENTAL TRANSPORT; EQUIPMENT; HYDROGEN COMPOUNDS; MASS TRANSFER; OXYGEN COMPOUNDS; POLLUTION ABATEMENT; WATER; 540220* - Environment, Terrestrial- Chemicals Monitoring & Transport- (1990-)