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Newmont-Cripple Creek&Victor Gold Mine <br /> Technical Specification No.02776-O.DOCX <br /> Squaw Gulch VLF . <br /> Project No.475.0106.006 <br /> April 08,2016 <br /> Monitor. Each location that fails the non- destructive testing shall be marked <br /> by CONTRACTOR, and repaired accordingly. <br /> C. Repair Procedures <br /> 1. Defective seams shall be reconstructed as described in these <br /> SPECIFICATIONS. <br /> 2. Small holes shall be repaired by abrading the sheet surface and <br /> welding an extrusion bead. If the hole is larger than one-quarter (1/4) <br /> inch in diameter it shall be patched. Tears shall be repaired by <br /> patching. Where the tear is on a slope or an area of stress and has a <br /> sharp end it must be rounded prior to patching. <br /> 3. Blisters, large holes, undispersed raw materials, and contamination by <br /> foreign matter shall be repaired by patches. <br /> 4. Surface of geomembrane that are to be patched shall be abraded and <br /> cleaned no more than fifteen (15) minutes prior to the repair. No more <br /> than 10%of the thickness shall be removed. <br /> D. Patches shall be round or oval in shape, and extend a minimum of six (6) <br /> inches beyond the edge of defects. All patches shall be of the same compound <br /> and thickness as the geomembrane specified. All patches shall have their top <br /> edge beveled to an approximately 45-degree angle with an angle grinder prior <br /> to placement of the patch. Patches shall be applied using approved methods <br /> only. <br /> E. The extrusion welding process shall restart by grinding the existing seam and <br /> rewelding a new seam. Welding shall commence where the grinding started <br /> and must overlap the previous seam by at least two (2) inches. Reseaming <br /> over an existing seam without regrinding shall not be permitted. <br /> F. Each repair shall be non-destructively tested, except when CERTIFYING <br /> ENGINEER requires a destructive seam sample obtained from a repaired seam. <br /> Repairs that pass the destructive test shall be taken as an indication of an <br /> adequate repair. Failed tests indicate that the repair shall be repeated and <br /> retested until passing test results are achieved. <br /> Recording the Results: Daily documentation of all non-destructive and <br /> destructive testing shall be provided to MANAGER by CQA Monitor. This <br /> documentation shall identify all seams that initially failed the test and include <br /> evidence that these seams were repaired and successfully retested. <br /> 3.11. Conformance Testing <br /> A. During manufacturing of the geomembrane, CQA Monitor will be present to <br /> obtain and forward samples to the Quality Assurance Testing Laboratory for <br /> testing to ensure conformance with the SPECIFICATIONS. <br /> Page 20 <br />