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Geoelectric Leak Detection Final Report September 18, 2008 <br />Forward Landfill WU-08 Page 2 <br />was checked periodically (at least every 20 minutes) by passing the equipment over a <br />known hole or over a ground wire to confirm functionality of the equipment, and then again <br />at the end of the day of surveying. The calibration holes were repaired by the Installer. <br />Results <br />The water lance survey for FU -08 found 2 irregularities in the subgrade, and no leaks in <br />the geomembrane. Irregularities were large enough to cause concern; one had been <br />stepped on and visibly stretched the liner around it. Both irregularities were removed and <br />repaired by the liner installation contractor. The repared liner and associated objects are <br />shown in figures 1 and 2. <br />® 143E Spring Hill Drive • Grass Valley, California 95945 • (530) 272-2448 • Fax: (530) 272-8533 <br />USA 0 CENTRAL & SOUTH AMERICA • PHILIPPINES <br />