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AI. <br /> Cripple Creek&Victor Gold Mining Company <br /> Squaw Gulch VLF Phase 1 (9,450 foot to 9,550 foot bench,, amec <br /> Final Report Addendum foster <br /> Quality Assurance Monitoring&Test Results wheeler <br /> December 1. 2015 <br /> work activity stoppages, and in the event that devices were disconnected from power <br /> and re-energized. <br /> ECA cut 1-inch-wide samples (coupons) from each trial seam and tested the coupons <br /> with a field tensiometer. ECA tested each double wedge fusion trial seam twice for peel <br /> adhesion (peel) and once for bonded seam strength (shear). Tests were conducted on <br /> fusion welds on both the inner and outer tracks of each peel coupon. ECA tested each <br /> extrusion trial seam twice for peel and once for shear. <br /> Amec Foster Wheeler personnel observed trial seam sample testing and documented <br /> test results. Tensile testing of each trial seam coupon was observed to verify project <br /> yield strengths were met during shear testing and failure did not occur in the weld during <br /> peel testing.When trial seams did not meet project technical specifications, Amec Foster <br /> Wheeler verified the welding apparatus was not used until two consecutive trial seams <br /> performed by the same technician/apparatus combination met project technical <br /> specifications.The trial seam test results for extrusion and fusion seaming are presented <br /> in Appendix J.2. ECA used one tensiometer during the project and one spare <br /> tensiometer was maintained on site. Tensiometer certifications are presented in <br /> Appendix L. Figures 3 and 4 show the codes used to designate passing and failing test <br /> results. <br /> 6.3.2 Seaming Observations <br /> Amec Foster Wheeler personnel observed seams before, during, and after welding. <br /> Each seam was checked for adequate overlap prior to welding and to verify the seam <br /> area was dry and clean of any debris. A Minimum overlap of 3 inches is specified by <br /> Agru to achieve an acceptable weld and allow for successful destructive and non- <br /> destructive testing (the summary tables in Appendix J report a total of 6 inches; 3 inches <br /> on the top panel and 3 inches on the bottom panel). <br /> Amec Foster Wheeler documented ECA personnel performing the seaming and the <br /> seaming equipment used. Following the completion of seaming and repairs, Amec <br /> Foster Wheeler checked the full length of each seam to verify no additional repairs were <br /> required. In the event additional repairs were needed, the location was marked on the <br /> geomembrane, location documented, and ECA completed the repair. Once ECA <br /> completed repairs, an Amec Foster Wheeler representative verified the repair met <br /> project technical specifications. All seams were inspected for quality and completion. <br /> Amec Foster Wheeler personnel conducted a final walk through and inspection of the <br /> geomembrane surface and completed acceptance forms to verify completion of <br /> geomembrane liner per project technical specifications. The geomembrane liner <br /> acceptance notifications are presented in Appendix J.7. <br /> 27 <br />