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ameO <br />peel adhesion (peel) and once for bonded seam strength (shear). Lone Star conducted peel <br />tests on fusion welds on both the inner and outer tracks of each peel coupon. Lone Star <br />tested each extrusion trial seam twice for peel and once for shear. <br />AMEC personnel observed the testing of trial seam samples and documented test results. <br />AMEC observed the tensile testing of each trial seam coupon to verify that project yield <br />strengths were met during shear testing and that failure did not occur in the weld during peel <br />testing. When trial seams did not meet specifications, AMEC verified that the welding <br />apparatus was not used until two consecutive trial seams performed by the same <br />technician/apparatus combination met specifications. The trial seam test results for <br />extrusion and fusion seaming are presented in Appendix J-2. Lone Star used one <br />tensiometer during the project. Tensiometer certifications are presented in Appendix N. <br />Figures 3 and 4 show the codes used to designate passing and failing test results. <br />6.1.3.2 Seaming Observations <br />AMEC personnel observed seams before, during and after welding. AMEC checked each <br />seam for adequate overlap prior to seaming and to verify that the seam area was clean and <br />dry. <br />AMEC documented Lone Star personnel performing the seaming and the seaming <br />equipment used. Following the completion of seaming and routine repairs, AMEC checked <br />the full length of each seam to verify that no additional repairs were required. In the event <br />that additional repairs were needed, AMEC marked the location requiring repair on the <br />geomembrane, documented the location, and brought the repair area to the attention of <br />Lone Star. Once Lone Star made repairs, AMEC checked the repair location to verify <br />completion. AMEC inspected all seams for quality and completion. AMEC personnel <br />conducted a final walk-through to verify completion of the entire geomembrane system and <br />to identify any additional damage that may have occurred during construction operations. <br />AMEC recorded observations made during seaming. For the 2010 Phase 5 OSA primary <br />geomembrane layer, the fusion-welding summary is presented in Appendix J-3. <br />0 <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 45