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Forward Landfill WMU FU-23 <br />02778 18 HDPE GEOMEMBRANE <br />respectively. ii. Both test strips must meet peel and shear requirements for welded seams specified in Paragraph 3.2, C.8. iii. If any field test sample fails, follow failed test procedures outlined in this Section. <br />D. Laboratory Testing performed independently by Construction Quality Assurance (CQA) Laboratory and Installer. 1. Test "seam strength" and "peel adhesion." Test 1-inch wide samples at strain rate of 2 inches per minute. 2. Minimum acceptable values to be obtained for these tests are specified in Article 3.2, C.8. 3. Test at least five specimens for each test method. Four of five specimens must meet minimum requirements. None of the peel specimens may peel 100 percent, or the entire sample will be considered as failing. 4. Select specimens alternately by test from the samples (i.e., peel, shear, peel, shear...). 5. Provide test results no more than 24 hours after receiving samples. 6. For double wedge welded samples, test both sides in peel. <br />E. Failed Weld Procedures. 1. Follow these procedures when there is a destructive test failure. Procedures apply when test failure is determined by the QA/QC CONSULTANT, the GEOSYNTHETICS CONTRACTOR, or by field tensiometer. Follow one of the following two options: a. First Option. • Reconstruct the seam between any two passing test locations. The GEOSYNTHETIC’S CONTRACTOR can not perform the repair by extrusion welding the flap. b. Second Option. • Trace the weld at least 10 feet minimum in both directions from the location of the failed test, or to the end of the weld. • Obtain a small sample at both locations for an additional field test. • If these additional test samples pass field tests, then take laboratory samples. • If the laboratory samples pass, then reconstruct the weld or cap between the two test sample locations that bracket the failed test location. • If any sample fails, then repeat the process to establish the zone in which the weld must be reconstructed. <br />F. Acceptable Welded Seams. 1. Bracketed by two locations from which samples have passed destructive tests. 2. For reconstructed seams exceeding 50 feet, a sample taken from within the reconstructed weld passes destructive testing. 3. Whenever a sample fails, provide additional testing for seams that were welded by the same welder and welding apparatus or welded during the same