Method and system to locate leaks in subsurface containment structures using tracer gases
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United States of America Patent
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Mar 14, 2000
Grant Date -
N/A
app pub date -
Apr 15, 1998
filing date -
Apr 15, 1998
priority date (Note) -
Expired
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Abstract
The present invention integrates an inverse modeling technique and a field measurement system. The system uses inexpensive and non-hazardous gaseous tracers injected inside the contained volume of a barrier to quantify the location and size of any leaks in the barrier. The vapor sampling point installation, which allows the collection of soil gas samples from multiple points around the barrier installation, can be accomplished with conventional drilling or direct push techniques. The system uses a field-proven soil gas analyzer, incorporated in a sampling system capable of monitoring many sample points with relatively high time resolution. A rigorous inverse modeling technology is integrated with the data system for real time analysis.
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