Laserfiche WebLink
Cripple Creek & Victor Gold Mining Company <br />Laboratory Liner Extension <br />Final Report ameO <br />Quality Assurance Monitoring &Test Results <br />January 14, 2014 <br />the average of the thickness measurements be no less than the 80 mils, and that no <br />individual measurement be less than 72 mils. The thickness monitoring provided by <br />AMEC indicated that all of the panels met or exceeded project requirements. <br />AMEC personnel measured deployed panel lengths using a measuring wheel. <br />Recorded lengths are approximate, and do not reflect any trimming or adjustments <br />made for final placement. <br />AMEC personnel observed the surface of each deployed panel. Any penetration <br />defects were logged and marked on the panel. Section 5.2.5 provides further <br />discussion of repairs. Sufficient overlap of each panel with adjacent panels for <br />seaming was confirmed. No locations of insufficient overlap were observed during the <br />installation of the geomembrane liner. <br />5.2.3 Seaming <br />Extrusion welding was the only seaming method employed by Lone Star for this <br />project. The geomembrane was seamed (welded) on the same day it was deployed. <br />Lone Star did not perform any fusion welds during the Laboratory Liner Extension <br />project. <br />Trial Seam Monitoring <br />Lone Star performed trial seams to monitor the performance of the seaming apparatus <br />and operator under actual site conditions. Each welding operator and his apparatus <br />produced trial seams prior to the beginning of each day's seaming operation and in the <br />event that devices were disconnected from power and re- energized. <br />Lone Star cut 1- inch -wide samples (coupons) from each trial seam and tested the <br />coupons with a field tensiometer. Lone Star tested each extrusion trial seam twice for <br />peel adhesion (peel) and once for bonded seam strength (shear). <br />AMEC personnel observed the testing of trial seam samples and documented test <br />results. The tensile testing of each trial seam coupon verified that project specification <br />were met and failure did not occur in the weld. When trial seams did not meet <br />specifications, AMEC verified the welding apparatus was not used until two <br />consecutive trial seams performed by the same technician and apparatus met <br />specifications. The trial seam test results are presented in Appendix H.2. Lone Star <br />used one tensiometer and retained a spare tensiometer during the project. Figure 3 <br />shows the codes used to designate passing and failing test results. <br />5.2.4 Seaming Observations <br />AMEC personnel observed seams before, during, and after welding. Each seam was <br />checked for adequate overlap prior to seaming and verified the seam area was clean <br />and dry. <br />sAprojects \1125m -cc &v lab liner extension\h2 - design \lab liner extension \roc report\lab liner roc report.docx 11 <br />