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ameO <br />■ Documentation of deployed panel lengths; and <br />■ Development of panel layout drawing. <br />Prior to the deployment of geomembrane, AMEC and Lonestar verified that the subgrade was <br />free of soft spots, protrusions, angular particles, abrupt grade changes, and loose soil. AMEC <br />and Lonestar verified that the GCL surface had been accepted by AMEC and Lonestar. <br />Lonestar provided written certification of geomembrane subgrade acceptance. The subgrade <br />acceptance certificates are presented in Appendix D. <br />AMEC assigned each geomembrane panel a number. Geomembrane panels deployed in the <br />LOB Liner Extension were numbered 1 through 16. <br />AMEC marked the panel designation and roll number directly on each panel after it was <br />deployed. The geomembrane panel layouts are presented in Appendix A. <br />During geomembrane deployment, AMEC measured sheet thickness with a digital caliper. <br />AMEC measured sheet thickness at five random locations along one edge of each <br />geomembrane panel. The average thickness specified for the 80 -mil geomembrane was 81 <br />mils. Project specifications for 80 -mil geomembrane required that the average of the five <br />thickness measurements be no less than the 80 mils, and that no individual measurement be <br />less than 72 mils. The thickness monitoring provided by AMEC indicated that all of the panels <br />met or exceeded project requirements. <br />AMEC personnel measured deployed panel lengths by use of a measuring wheel. Recorded <br />lengths were approximate, and do not reflect any trimming or adjustments made for final <br />placement or anchor trench lengths. <br />AMEC personnel observed the surface of each deployed panel. AMEC logged any penetration <br />defects and marked them on the panel. Section 6.1.4 provides further discussion of repairs. <br />AMEC also observed the overlap of each panel with adjacent panels to verify that sufficient <br />overlap for seaming existed. AMEC logged insufficient panel overlaps as defects and marked <br />them for correction. <br />Ames surveyed all panel intersections and destructive seam sample locations. <br />6.2.3 Seaming <br />The double wedge fusion weld was the principal seaming method employed by Lonestar for this <br />project. Lonestar fusion seamed (welded) geomembrane on the same day that it was deployed. <br />Lonestar did not use extrusion welds for seaming during the LOB Liner Extension project, <br />although it was used for repair procedures. <br />17 <br />