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October 2001 -27- 003-2182.004 <br /> observation of the seaming procedures. Golder observed the entire lengths of all seams, <br /> patches, and other repairs either during seaming, or shortly after completion. <br /> 6.1.3.1 Trial Seam Monitoring <br /> Poly-Flex 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 trial <br /> seams prior to the beginning of each day's seaming operation and in the event that devices were <br /> disconnected from power and re-energized. <br /> Poly-Flex cut 1-inch wide samples (coupons) from each trial seam and tested the coupons with <br /> a field tensiometer. Poly-Flex tested each double wedge fusion trial seam twice for peel <br /> adhesion (peel) and once for bonded seam strength (shear). Poly-Flex conducted peel tests on <br /> fusion welds on both the inner and outer tracks of each peel coupon. Poly-Flex tested each <br /> extrusion trial seam twice for peel and once for shear. <br /> Golder personnel observed the testing of trial seam samples and documented test results. <br /> Golder 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, Golder 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 extrusion <br /> and fusion seaming are presented in Appendix J-3a and J-3b. Poly-Flex used one tensiometer <br /> during the project. Tensiometers certification is presented in Appendix J-4. Figures 2 and 3 <br /> show the codes used to designate passing and failing test results. <br /> I\00\2182\EXTEP.NAL POND RPT\PINALDOC Golder Associates <br />