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Cripple Creek & Victor Gold Mining Company <br />Cresson Project ame <br />Quality Assurance Monitoring and Test Results . <br />Liner Recertification <br />December 17, 2009 <br />6.1.1 Conformance Testing <br />Geomembrane manufactured by Poly -Flex. An AMEC representative performed geomembrane <br />conformance sampling at the Poly -Flex plant in Grand Prairie, Texas. Samples were sent to <br />TR I/E nviron mental, Inc. geosynthetic laboratory in Austin, Texas, for conformance testing. <br />Geomembrane rolls were not used on the project unless approved by AMEC based on <br />conformance test results. <br />Prior to the geomembrane arrival to site, TRI performed 3 conformance tests at a frequency of <br />one test per 78,775 square feet, exceeding the minimum specified testing frequency of one test <br />per 150,000 square feet. Conformance 100 -mil single sided texture LLDPE geomembrane used <br />to construct the Phase IV recertification liner system met specifications. Conformance test <br />results are presented in Appendix J. <br />6.1.2 Deployment Monitoring <br />Geomembrane panel deployment monitoring performed by AMEC included: <br />■ Observation of panel surface condition and panel overlap; <br />10 ■ Assignment of panel numbers; <br />■ Verification of factory roll number and receipt of complete certification prior to allowing <br />deployment; <br />■ Measurement of sheet thickness; <br />■ Documentation of deployed panel lengths; <br />■ Development of panel layout drawing; and <br />■ Observation of VLF tie -in. <br />Prior to the deployment of geomembrane, AMEC and Lonestar verified that the subgrade was <br />free of soft spots, protrusions, angular particles, abrupt grade changes, and loose soil. AMEC <br />and Lonestar verified that the SLF surface had been proof - rolled, and that the SLF surface was <br />free of desiccation cracks. Where the surface of the SLF did not meet specifiations, Ames <br />repaired the area and re- compacted the surface. Lonestar provided written certification of <br />geomembrane subgrade acceptance. The subgrade acceptance certificates are presented in <br />Appendix F. <br />S: \PROJECTS \1125E CCV COA \H2 - DESIGN\LINER RECERTIFICATION REPORT\REPORT BODMA MONTIORING AND TEST RESULTS LINER 1 7 <br />RECERTIFICATION.DOC - <br />