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October 2001 -12- 003-2182.004 <br /> 3.3 External Pond Upper Liner <br /> Geomembrane installation activities for the Upper External Pond Liner included deployment <br /> and seaming of 80-mil smooth, and 80-mil single-sided textured (textured face up) HDPE, <br /> and five panels of 80-mil single-sided textured LLDPE geomembrane, fusion seaming of <br /> panels by dual hot wedge welding, repair of defects by extrusion welding, and non- <br /> destructive and destructive testing of the geomembrane. Poly-Flex placed panels U-1 <br /> through U-97 (approximately 178,454 square feet, including geomembrane in anchor <br /> trenches and excluding overlap) on approved geonet as part of the External Pond. Record <br /> Drawing No. 3 in Appendix A presents the Upper Liner geomembrane panel layout. Ames <br /> anchored geomembrane at the upper limits of the External Pond in an anchor trench a <br /> minimum of 3 feet deep by 2 feet wide. The upper geomembrane system includes the <br /> geomembrane deployed for the Pump Station area. <br /> I\00\2[82\EXTERNAL POND"TTINALDOC Golder Associates <br />