Method for placement of a permeable remediation zone in situ
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United States of America Patent
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Mar 24, 1998
Grant Date -
N/A
app pub date -
Feb 13, 1996
filing date -
Aug 15, 1995
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method for placement of remediation zones for treatment of contaminated groundwater in situ (10, 10A, 50, 60, 70, 80, 124) is described. The zones can be infiltrated or can be excavated and filled with a treatment composition to provide the remediation. A frozen wall (11) is temporarily established by freeze pipes (16, 18, 16A, 18A, 51, 52, 61, 62, 72, 73, 74, 75, 84, 85) regions (120,122) around the zone for the injection or excavation and filtration and then the frozen wall created is removed by thawing. The contaminated groundwater flows through the zone, preferably using a permanent barrier or wall (86) acting as a funnel. The method provides reliable and economic remediation in situ.
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