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ameO <br />6.2.4 Defect and Repair Observations <br />AMEC inspected geomembrane panels for damage that may have occurred during <br />manufacture, transport, deployment, or installation as discussed in Section 6.2. Any <br />damage noted (during or after deployment) by AMEC was reported. AMEC repeatedly <br />observed all panels and seams for defects until Ames covered the geomembrane with <br />LVSCF and DCF. <br />AMEC documented defects by assigning a unique defect identification code to each defect, <br />and marking each defect code on the geomembrane. The summaries of defects and <br />repairs, including the approximate locations of each repair, are presented in Appendix K-5 <br />and L-5 for the secondary and primary geomembrane layers, respectively. <br />6.2.5 Destructive Testing <br />AMEC selected destructive test locations based on Lone Star's completion of approximately <br />98,596 lineal feet of welding for the secondary geomembrane, 88,401 lineal feet of welding <br />for the primary geomembrane, various working conditions, and on seaming observations <br />(e.g., suspicion of a defective weld). Lone Star obtained and tested 207 fusion seam <br />destructive samples and 28 extrusion seam destructive samples during the installation of the <br />secondary geomembrane, and Lone Star obtained and tested 188 fusion seam destructive <br />samples and 8 extrusion seam destructive samples during the installation of the primary <br />geomembrane in the Phase 5 PSSA. <br />Lone Star constructed approximately 91,706 lineal feet of fusion welded seams and 6,890 <br />lineal feet of extrusion welded seams on the secondary PSSA geomembrane, and <br />approximately 86,950 lineal feet of fusion welded seams and 1,451 lineal feet of extrusion <br />welded seams for the primary PSSA geomembrane. The specified frequency of destructive <br />testing was one test per 500 lineal feet of weld. AMEC identified and Lone Star obtained <br />destructive samples from the secondary PSSA geomembrane panel seams at a frequency <br />of one destructive test sample per 443 lineal feet of fusion welded seams, and one per <br />246 lineal feet of extrusion welded seams. AMEC identified and Lone Star obtained <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 54