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May 2005 ; - 053-2386 <br />After successful completion of Test #2 to a pressure of 630 psi, this test sample was loaded in 50 <br />pounds per square inch (psi) increments over a 4.5-hour period until the target pressure of 670 psi was <br />reached. The full load of 670 psi was maintained for 24 hours. Following completion of the 24-hour <br />period, the load was released and the sample disassembled. The geosynthetic membrane was <br />inspected and tested for punctures both visually and by applying a vacuum to the geomembrane. <br />Liner load test results for this configuration are included in Appendix B-3. Test results are discussed <br />in Section 5. <br />4.4 Test #4 - Phases I and II OSA Liner System <br />The test sample was assembled using approximately four inches of SLF in the bottom of the cell, <br />compacted to a target density of 95 percent of the maximum standard Proctor dry density at plus or <br />minus two percent of the optimum moisture content. The maximum standard Proctor density for the <br />soil is 116.0 pounds per cubic foot (pcf) with optimum moisture content of 12.2 percent. The SLF <br />was compacted to a dry density of 95 percent at a moisture content of 13.0 percent. Next, a 12-inch <br />diameter piece of 80-mil single-sided textured VLDPE geomembrane was placed on top of the SLF <br />material, textured side down. Finally, the DCF material was placed on top of the liner to a thickness <br />of approximately 8.7 inches. The thickness of SLF and DCF placed in the load. cell is not <br />representative of field conditions due to the small size of the testing apparatus. <br />The test sample Nvas loaded in 50 pounds per square inch (psi) increments over a 25-hour period until <br />the target pressure of 670 psi was reached. The full load of 670 psi was maintained for 50 hours. <br />Following completion of the 50-hour period, the load was released and the sample disassembled. The <br />geosynthetic membrane was inspected and tested for punctwres both visually and by applying a <br />vacuum to the geomembrane. Liner load test results for this configuration Ee included in <br />Appendix B-4. Test results are discussed in Section 5. <br />/--N <br /> <br />naaooea? Golder Associates