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August 2002 -38- 003 -2203 <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 />Ames surveyed all panel intersections and destructive seam sample locations. Using these <br />points, Golder has provided the panel layout record drawing (Record Drawing No. 5), in <br />Appendix A. <br />The LLDPE geomembrane deployment observations are presented in Appendix K -2- <br />• <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 fusion seamed (welded) geomembrane on the same day that it was <br />deployed. Poly -Flex used extrusion welds for seaming where the Phase Na 80 -mil LLDPE <br />geomembrane was tied into existing Phase I geomembrane in the OSA, for repairs, and where <br />conditions were unfavorable for fusion welding (e.g., sharp corners). Golder observed trial <br />seam tests, monitored seaming equipment temperatures and <br />speed, <br />and provided <br />visual <br />observation of the seaming procedures. Golder observed the <br />entire <br />lengths of all <br />seams, <br />patches, and other repairs either during seaming, or shortly after completion. <br />• <br />1-. WM203W4WCt „aWOOZO32M.04W.047e0m.eoc Golder Associates <br />