geomembrane and the GCL was observed at the cell during exhumation. Thin stripes of relatively dry bentonite were observed on the upper surface of the GCL throughout the length of the slopes at the site, likely corresponding to bentonite deposited from rivulets of water flowing downslope. In addition, significant accumulation of bentonite was present along the toe of the east slope, forming a wedge shape. The wedge feature consisted of accumulation of bentonite between the geomembrane and the GCL along the slope length, with minimal bentonite mass along the upper regions of the slope and maximum depth of bentonite at the toe of the slope (Figure 5). The wedge feature extended approximately 295 feet FIGURE 5 Accumulation of bentonite between geomembrane and GCL at toe of wedge Welding and testing equipment for the serious geosynthetics installer Pro-Wedge VM-20 Wedge Welder Over 6,000 units sold! Pro-Tester High-Pull Tensiometer for testing high-strength materials with new Auto-Engage feature (888) 324-WELD (9353) or 530 621-3200 Visit demtech.com or call for more product information. www.GeosyntheticsMagazine.com 0620GS_p10-19.indd 15 15 5/20/20 5:38 PMhttp://www.demtech.com http://www.GeosyntheticsMagazine.com