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ameO <br />Prior to the deployment of geomembrane, AMEC and Lone Star verified that the subgrade <br />was free of soft spots, protrusions, angular particles, abrupt grade changes, and loose soil. <br />AMEC and Lone Star verified that the SLF surface had been proof-rolled, and that the SLF <br />surface was free of desiccation cracks. Where the surface of the SLF did not meet <br />specifications, Ames repaired the area and re-compacted the surface. Lone Star provided <br />written certification of geomembrane subgrade acceptance. The subgrade acceptance <br />certificates are presented in Appendix G-1. <br />AMEC assigned each geomembrane panel a number, as follows: <br />• Single-sided textured 80-mil LLDPE geomembrane (textured side down) <br />panels deployed in the 2010 Phase 5 OSA were designated by P-1 <br />through P-120 as part of the primary liner; <br />AMEC marked the panel designation and roll number directly on each panel after it was <br />deployed. The geomembrane record drawings, showing the 2010 Phase 5 OSA primary <br />geomembrane panel layout and destructive testing, are presented in Record Drawing No. 5 <br />in Appendix A. <br />During geomembrane deployment, AMEC measured sheet thickness with a micrometer. <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 80 <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 <br />be less than nominal thickness minus 8 mils (i.e., 72-mil). The thickness monitoring <br />provided by AMEC indicated that all of the panels met or exceeded project requirements. <br />AMEC personnel measured deployed panel lengths by use of a measuring wheel. <br />Recorded lengths were approximate, and do not reflect any trimming or adjustments made <br />for final placement or anchor trench lengths. <br />AMEC personnel observed the surface of each deployed panel. AMEC logged any <br />penetration defects and marked them on the panel <br />AMEC Earth & Environmental, Inc. <br />2000 S. Colorado Blvd 2-1000 <br />Denver, CO 80222 <br />Tel 303-935-6505 <br />Fax 303-935-6575 www.amec.com <br />Section 6.1.4 provides further <br />43