| Damage caused
by heavy machinery while installing earth materials on geomembranes is the most significant cause of damage to
geomembranes. A geoelectric leak location survey of the soil-covered geomembrane of a newly constructed landfill is a very cost effective method for
finding leaks that occur while placing a protective soil cover over the
geomembrane liner. The method has a distinct advantage because the testing is done after the final construction and after the geomembrane liner has been subjected to construction and loading activity.
Procedures for this method are specified in ASTM standard D-7007. Surveys with soil on the liner are conducted by
making point-by-point electrical measurements on the soil. The data is
recorded in a portable data acquisition logger and then downloaded to a portable
computer for processing and data analysis in the field.
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|
Survey of a Landfill
Geomembrane Liner |
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|
Typical construction damage found.
|
 1 inch
leak found on a panel |
|
