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2. Over the length of seam failure, CONTRACTOR shall either cut out the old seam, <br />reposition the panel and reseam, or add a cap strip, as required by CERTIFYING <br />. ENGINEER. <br />3. After reseaming or placement of the cap strip, additional destructive field test(s) shall <br />be taken within the reseamed azea. The reseamed sample shall be found acceptable if <br />test results are approved by CERTIFYING ENGINEER. If test results are not <br />acceptable, this process shall be repeated until the reseamed length is judged <br />satisfactory by MANAGER and CERTIFYING ENGINEER. <br />4. Samples taken as the result of failed tests do not count toward the total number of <br />destructive tests required. <br />G. CONTRACTOR shall document all actions taken in conjunction with destructive test <br />failures, with CERTIFYING ENGINEER providing Quality Assurance documentation. <br />H. Cap strips shall be non-destructively tested as described in Section 3.08. <br />3.10 DEFECTS AND REPAIILS: <br />A. All seams and non-seam areas of the geomembrane shall be observed by CQA Monitor for <br />defects, holes, blisters, undispersed raw materials, and any sign of contamination by foreign <br />matter. The surface of the geomembrane shall be clean at the time of observation. The <br />geomembrane surface shall be brushed, blown, or washed by CONTRACTOR if the amount <br />of dust or mud inhibits inspection. MANAGER and CERTIFYING ENGINEER shall <br />determine if cleaning of the geomembrane is needed to facilitate observation at no additional <br />cost to CC&V. <br />' • B. Each suspect location in seam and non-seam areas shall be non-destructively tested as <br />determined appropriate by CQA Monitor, in the presence of CQA Monitor. Each location that <br />fails the non-destructive testing shall be marked by CONTRACTOR, and repaired <br />accordingly. <br />C. Repair Procedures <br />1. Defective seams shall be reconsmtc[ed as described in these SPECIFICATIONS. <br />2. Small holes shall be repaired by abrading the sheet surface and welding an extrusion <br />bead. If the hole is larger than one-quarter (1/4) inch in diameter it shall be patched. <br />3. Tears shall be repaired by patching. Where the tear is on a slope or an area of stress <br />and has a sharp end it must be rounded prior to patching. <br />4. Blisters, large holes, undispersed raw materials, and contamination by foreign matter <br />shall be repaired by patches. <br />5. Surface of geomembrane that are to be patched shall be abraded and cleaned no more <br />than fifteen (15) minutes prior to the repair. No more than ten (]0)%ofthe thickness <br />shall be removed. <br />D. Patches shall be round or oval in shape, and extend a minimum of six (6) inches beyond the <br />edge of defects. All patches shall be of the same compound and thickness as the <br />geomembrane specified. All patches shall have their top edge beveled to an approximately 45 <br />degree angle with an angle grinder prior to placement of the patch. Patches shall be applied <br />using approved methods only. <br />Section 02776 Page 19 of 20 October 25, 2000 <br />Geomembrane Golder Associates Revision 8 <br />1:\00122J31000OtCFRiREPo802UPPINDSIM1PPE1993-2099021161R8 DOC <br />