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ameO <br />AMEC recorded observations made during seaming. For the Phase 5 Berm Modification <br />primary geomembrane layer, the fusion and extrusion welding were completed to project <br />specifications and a summary is presented in Appendix J.3. <br />6.4 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. <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 J.4 <br />for the Phase 5 Berm Modification primary geomembrane layer. <br />6.5 Destructive Testing <br />AMEC selected destructive test locations based on Lone Star's completion of approximately <br />1,515 lineal feet of welding for the primary geomembrane, various working conditions, and <br />on seaming observations (e.g., suspicion of a defective weld). Lone Star obtained and <br />tested three (3) fusion seam destructive samples and three (3) extrusion seam destructive <br />samples of the primary geomembrane for the Phase 5 Berm Modification. <br />Lone Star constructed approximately 736 lineal feet of fusion welded seams and 779 lineal <br />feet of extrusion welded seams for the primary geomembrane. The specified frequency of <br />destructive testing was one test per 500 lineal feet of weld. AMEC identified and Lone Star <br />obtained destructive samples from the primary geomembrane panel seams at a frequency <br />of one destructive test sample per 245 lineal feet of fusion welded seams, and one per 260 <br />lineal feet of extrusion welded seams. The test frequencies exceeded project requirements. <br />AMEC Environment & Infrastructure, 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 />24 <br />