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October 2001 -26- 003-2182.004 <br /> Golder personnel measured deployed panel length using a measuring wheel. Recorded lengths <br /> were approximate, and may not reflect any trimming or adjustments made for final placement <br /> or anchor trench lengths. <br /> Golder personnel observed the surface of each deployed panel. Golder logged any penetration <br /> defects and marked them on the panel. Section 6.1.4 provides further discussion of repairs. <br /> Golder also observed the overlap of each panel with adjacent panels to verify that sufficient <br /> overlap for seaming existed. Golder logged insufficient panel overlaps as defects and marked <br /> them for correction. <br /> Five panels of upper geomembrane placed on the bench of the External Pond and then covered <br /> with Base Course were 80-mil single-sided textured LLDPE due to the material shortage on <br /> site. These five panels were designated U-96 through U-100. <br /> Ames surveyed all panel intersections and destructive seam sample locations. Using these <br /> points, Golder has provided the Panel Layout Record Drawings (Record Drawing No. 3), in <br /> Appendix A. <br /> The geomembrane deployment observations are presented in Appendix J-2a and J-2b. <br /> 6.1.3 Seaming <br /> The double wedge fusion weld was the principal seaming method employed by Poly-Flex for <br /> this project. Poly-Flex generally fusion seamed(welded) geomembrane on the same day that it <br /> was deployed, however, in some cases welding was performed the following day when ambient <br /> air temperatures made seaming conditions more favorable. Poly-Flex used extrusion welds if <br /> seaming conditions were unfavorable for fusion welding (e.g., sharp corners). Golder observed <br /> trial seam tests, monitored seaming equipment temperatures and speed, and provided visual <br /> I\00\2182\EXTERNAL POND RPT\PINALDOC Golder Associates <br />