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that sufficient overlap for seaming existed. AMEC logged insufficient panel overlaps as <br />defects and marked them for correction. <br />Ames surveyed all panel intersections and destructive seam sample locations. Using these <br />points, AMEC has provided the primary geomembrane panel layout record drawing (Record <br />Drawing No. 4 of 5), in Appendix A. <br />The 2011 Phase 5 VLF OSA 3 Portion LLDPE primary geomembrane deployment <br />observations are presented in Appendix J.1. <br />6.3 Seaming <br />The double wedge fusion weld was the principal seaming method employed by Lone Star <br />for this project. Lone Star fusion seamed (welded) geomembrane on the same day that it <br />was deployed. Lone Star used extrusion welds for seaming where the 2011 Phase 5 VLF <br />OSA 3 Portion 80 -mil LLDPE primary geomembrane was tied into 80 -mil LLDPE primary <br />geomembrane at the temporary anchor trenches, for repairs, and where conditions were <br />unfavorable for fusion welding (e.g., sharp corners). AMEC observed trial seam tests, <br />monitored seaming equipment temperatures and speed, and provided visual observation of <br />the seaming procedures. AMEC observed the entire lengths of all seams, patches, and <br />other repairs either during seaming, or shortly after completion. <br />6.3.1 Trial Seam Monitoring <br />ame0 <br />Lone Star performed trial seams to monitor the performance of the seaming apparatus and <br />operator under actual site conditions. Each welding operator and his apparatus produced <br />trial seams prior to the beginning of each day's seaming operation, after all work activity <br />stoppages, and in the event that devices were disconnected from power and re- energized. <br />Lone Star cut 1 -inch wide samples (coupons) from each trial seam and tested the coupons <br />with a field tensiometer. Lone Star tested each double wedge fusion trial seam twice for <br />peel adhesion (peel) and once for bonded seam strength (shear). Lone Star conducted peel <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 corn 31 <br />