Laserfiche WebLink
R.J. Gordon Construction <br />October 30, 2015 <br />C:M_W_y <br />3.7 FT <br />3.7 FT <br />6.7 FT <br />Leak Signal <br />Noise Line <br />0 30 <br />Distance in Feet <br />LLSI Project 2211 • <br />Page 4 of 5 <br />FIGURE 3. PLOT OF ARTIFICIAL LEAK DATA FOR AREA 2A AT THE <br />FOOTHILL SANITARY LANDFILL <br />B. Bare Geomembrane Survey <br />One variation of the electrical method is the water puddle test for bare geomembranes. <br />This method detects electrical current flowing through holes in the geomembrane using a small <br />amount of water that is put in contact with the liner. A squeegee is used to push the water over the <br />liner. A low voltage electrical supply is connected to a wire in contact with the geosynthetic clay <br />liner and to the leak detector. When a hole in the liner is encountered, electrical current will flow <br />through water in the leak contacting the geosynthetic clay liner. <br />