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01/29/96 09:53 $JOJ 985 208 GOI.DER-GCS-GFS ~ 004 porous loading plate is placed in contact with the upper drainage material and a hydraulic jack used to apply the force to the sample against thc top plate. A di, fal pressure transducer is used to monitor the applied load and dial gauges measure deformation. The load from the hydraulic jack is adjusted to maintain the desired loading stress throughout the test. 3.0 Test Configurations The test was azsembled by placing the geomembrane over the low volume solution collection fill material. It was then followed by the drain cover fill material to complete the soil profile. The sample was then loaded in 50 pounds per square inch (psi) per hour increments until the target pressure of 385 psi waz reached. The full load WaS then left in application for 24 hours. Following the completion of the 24 hour period, the load was rclcased and sample disassembled. The geosynthetic membrane war tested for puncR~res both visually and by application of a vacuum to the geomembrane. The actual materials used and the specific observations of the test are noted in the following sub-section. Atypical cross-section of the assembled material is shown in Figure 4. 3.1 LLT-9 LLT-9 was assembled using the LVSCF. Approximately five inches were placed in the bottom of the Cell, with only mild tamping provided for wmpaction. Next, a 10 inch diameter piece of 100 mil LLDPE gwmcmbrane was placed on top of the LVSCF. Finally, the drain cover fill material was then placed in one lift on top of the liner to a thickness of sic inches. The sample was then loaded az described above for 24 hours at which time the sample was disassembled and the geomembrane inspected for damage. The geomembrane sample showed some minor signs of distress, i.e.: indentations and surface $czatches, but possessed no pinholes when held in front of a light source or during vacuwn testing. The post test condition of the geomembrane is shown in Figure 5. 4.0 Observations In the test, minor amounts of distress was observed on the geomembrane sample. The drainage material used for the geomembrane weer material showed no significant change in particle size, although some of the larger particles did appear to have cracked. No apparent changes were policed in the LVSCF.