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Cripple Creek & Victor Gold Mining Company <br />PSES Pipe Rack Liner Extension <br />Final Report <br />Quality Assurance Monitoring & Test Results <br />February 4, 2014 <br />ameO <br />sections, with each section being tested to locate the area of concern. This <br />subdivision process was repeated until the leak location was identified. If the leak area <br />was not located, ECA re- constructed the seam, and then vacuum box tested the <br />repair. <br />ECA tested extrusion welded seam sections with a vacuum box. A soap and water <br />solution was applied to the seam section. The vacuum box was then placed over the <br />seam area and energized with a vacuum pump capable of creating a vacuum of not <br />less than 5 psi. ECA and AMEC observed the action of the vacuum on the seam for a <br />minimum of 10 seconds. Each consecutively tested seam length was overlapped a <br />minimum of 3 inches. If soap bubbles appeared, AMEC marked and documented the <br />leak location. ECA repaired the leak and vacuum tested the repair. This procedure <br />was also followed to test extrusion repairs and extrusion patches. <br />The seam non - destructive test summaries (fusion pressure tests and extrusion <br />vacuum tests) for the PSES Pipe Rack Liner Extension geomembrane layer are <br />presented in Appendix J.6. <br />17 <br />