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CCBV Gold Mng . ID : RPR 30196 20 :39 No .030 P .25 <br /> 3.0 Test Configurations <br /> The test was assembled by placing the geomembrane over the soil liner fill material. It <br /> was then followed by the drain cover fill material to complex the soil profile. The <br /> sample was then loaded in 50 pounds per square inch (psi) per hour increments until the <br /> target pressure of 385 psi was reached. The full load was then left in application for 24 <br /> hours. Following the completion of the 24 hour period, the load was released and the <br /> sample disassembled. The geosynthetic membrane was tested for punctures both <br /> visually and by application of a vacuum to the geomembrane. The actual materials <br /> used and the specific observations of the test are noted in the following sub-section. A <br /> typical cross-section of the assembled material is shown in Figure 4. <br /> 3.1 LLT--13 <br /> LLT-13 was assembled using approximately five inches of soil liner fill material <br /> (sample # TP-6-2) in the bottom of the cell, compacted to 95 percent of maximum <br /> standard proctor density. Next, a 10 inch diameter piece of 80 mil LLDPE <br /> geomembrane was placed on top of the soil liner fill material, textured side down. <br /> Finally, the drain cover fill material was placed in one lift on top of the liner to a <br /> thickness of five inches. The sample was then loaded as described above for 24 hours <br /> after which time it was disassembled and the geomembrane inspected for damage. The <br /> geomembrane sample showed some minor signs of distress, i.e.: indentations and <br /> surface scratches, but possessed no pinholes when held in front of a light source or <br /> during vacuum testing. The post test condition of the goomembrane is shown in Figure <br /> 5. <br /> 4.0 Observations <br /> Following the test, minor amounts of distress were observed on.the geomembrane <br /> sample. The drainage material used for the geomembrane cover material showed no <br /> significant change in particle size, although some of the larger particles did appear to <br /> have cracked. <br /> If there are any questions or concerns about this report or the information contained in <br /> it, please feel free to contact me at any time. <br />