Leak Monitoring (ELIM)
In addition to manual leak location surveys, an Electrical Leak Imaging and Monitoring (ELIM) system can be permanently installed to monitor for leaks in the landfill liner. The ELIM system uses a series of electrodes placed on top of or underneath the geomembrane liner during liner installation. The electrodes are connected to an instrument panel used to make the electrical measurements. A data acquisition system collects and stores the data. The data is processed using advanced mathematical computer algorithms to calculate and display the positions of the leaks.
Geomembrane leak location surveys of surface impoundments and tanks can be conducted with water covering the geomembrane.
Geoelectric leak location survey of the soil-covered geomembrane is a very cost-effective method for finding leaks.
BARE LINER SURVEYS
To avoid the logistics of flooding the geomembrane with water, the exposed geomembrane can be tested for leaks using a water puddle test.