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the five (5) specimens must pass according to criteria established in <br />Article 2.01. Any specimen that fails through the weld or at the <br />weld /sheet interface shall be considered a failure, unless the weld <br />strength exceeds the sheet strength, as discussed in Section 01450, <br />Item 2.01. The tensiometer shall have a grip separation of 4 inches plus <br />the width of the seam. The seam is to be centered between the clamps. <br />The grip separation rates for LLDPE are twenty (20) inches per minute for <br />shear and twenty (20) inches per minute for peel. These tests shall not <br />fail according to the criteria in Article 2.01. <br />E. CQA Monitor will witness the testing of destructive samples obtained by <br />CQC personnel on a spot check basis in accordance with the CQA plan. <br />Destructive tests shall be performed within two (2) days of the samples <br />being obtained. <br />F. Failing tests shall be subjected to additional testing until a passing area is <br />found. A passing area is defined as a seam(s) bounded at each end by a <br />passing destructive test. Seams will be tracked in each direction until a <br />passing destructive test is found or until a previous passing destructive <br />test is reached. Seams will be tracked according to the welding <br />apparatus and the machine operator. The following procedures shall <br />apply whenever a sample fails the field destructive test: <br />1. Contractor can retrace the welding path to an intermediate <br />location (at a minimum of 10 ft from the location of the failed test), <br />at Design Engineer discretion, and take a small sample for an <br />additional field test. If this test passes, then the seam shall be cap <br />stripped between that location and the original failed location. If <br />the test fails, the process shall be repeated. <br />2. Over the length of seam failure, Contractor shall either cut out the <br />old seam, reposition the panel, and reseam, or add a cap strip, as <br />required by Design Engineer. <br />3. After reseaming or placement of the cap strip, additional <br />destructive field test(s) shall be taken within the reseamed area. <br />The reseamed sample shall be found acceptable if test results are <br />approved by Design Engineer. If test results are not acceptable, <br />this process shall be repeated until the reseamed length is judged <br />satisfactory by Project Manager and Design Engineer. <br />4. Samples taken as the result of failed tests do not count toward the <br />total number of destructive tests required within the specification. <br />G. Contractor shall document all actions taken in conjunction with destructive <br />test failures, with Design Engineer providing QA documentation. <br />H. Cap strips shall be non - destructively tested as described in Section 3.9. <br />Rio Grande Silver Tailings Evaporation Pond <br />02620 -22 Geosynthetic Liner <br />August 2011 02620 <br />