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LTI I ='� <br />conducted peel tests on fusion welds on both the Inner and outer tracks of each peel <br />coupon. Lone Star 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. <br />Lone Star used one tensiometer during the project. Tensiometer certifications are <br />presented in Appendix L. Figures 3 and 4 show the codes used to designate passing and <br />failing test results. <br />6.3.2 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 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 />23 <br />