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Cripple Creek & Victor Gold Mining Company <br />Squaw Gulch VLF Phase 1 <br />(9,550-foot Elevation Bench to Geomembrane Panel P1635) <br />Final Report <br />Quality Assurance Monitoring & Test Results <br />January 2016 <br />Project No.: 74201125N0 Page 25 <br />were deployed outside of this report’s approval area, but panel numbering remained <br />consecutive. <br />Amec Foster Wheeler marked the panel designation and roll number directly on each <br />panel after deployment. Ames surveyed all panel intersections and destructive seam <br />sample locations. Using these points Amec Foster Wheeler generated the record <br />drawings for the geomembrane, showing the panel layout and destructive testing <br />locations. These are presented as Record Drawing Nos. 6, 7, and 8 in Appendix A. <br />During geomembrane deployment, Amec Foster Wheeler measured the geomembrane <br />sheet thickness with calibrated callipers. Sheet thickness was measured at five random <br />locations along the edge of each geomembrane panel. The average thickness specified <br />for the 80-mil geomembrane exceeded 80 mils. Project technical specifications for 80- <br />mil geomembrane required that the average of the five thickness measurements be no <br />less than 80 mils, and that no individual measurement be less than the nominal <br />thickness minus 10 mils (i.e., 70 mils). The thickness monitoring provided by Amec <br />Foster Wheeler indicated that all of the panels met or exceeded project requirements. <br />Amec Foster Wheeler personnel measured deployed panel lengths using a measuring <br />wheel. Recorded lengths were approximate, and do not reflect any trimming or <br />adjustments made for final placement or anchor trench lengths. <br />Amec Foster Wheeler personnel observed the surface of each deployed panel and <br />logged any penetration defects and marked them on the panel. Section 6.4 provides <br />further discussion of repairs. Personnel confirmed the overlap of each panel with <br />adjacent panels was sufficient for seaming; any insufficient panel overlaps were logged <br />as defects and marked for correction. <br />Geomembrane liner deployment observations are presented in Appendix J.1. <br />6.3 Seaming <br />The double wedge fusion weld was the principal seaming method employed by ECA <br />during liner installation. ECA fusion seamed (welded) geomembrane on the same day it <br />was deployed. Amec Foster Wheeler personnel observed trial seam tests, monitored <br />seaming equipment temperatures and speed, and provided visual observation of the <br />seaming procedures. Personnel measured entire lengths of all seams, patches, and <br />other repairs either during seaming, or shortly after completion. Extrusion weld seaming <br />was performed to connect the geomembrane liner at the construction benches. Amec <br />Foster Wheeler personnel observed trail seam tests, monitored seaming equipment <br />temperatures and speed, and provided visual observation of the seaming procedures