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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 23 <br />6.0 GEOMEMBRANE CQA TESTING AND MONITORING <br />The following sections describe the CQA activities performed by Amec Foster Wheeler <br />for the geomembrane installation. <br />In accordance with the AMEC Geosynthetics CQA Plan (Section 01400.2 of the project <br />technical specifications in Appendix E), when an Amec Foster Wheeler monitor <br />observed deficiencies, the monitor determined the nature and extent of the problem by <br />performing additional testing to define the extent of the deficient area. ECA and/or CC&V <br />were notified of the deficiency for repairs. ECA corrected deficiencies to meet the <br />requirements of the project technical specifications, and Amec Foster Wheeler re-tested <br />the corrected deficiency prior to any additional related work. <br />CQA activities conducted by Amec Foster Wheeler during the installation of the LLDPE <br />geomembrane consisted of the following: <br />• Conformance sampling and testing of the geomembrane <br />• Observation and approval of the SLF surface prior to deployment of 80-mil DSMS <br />LLDPE geomembrane <br />• Observation and documentation of geomembrane deployment, including verifying <br />sheet thickness and overlap, documenting the approximate panel length and width, <br />and documenting panel layout <br />• Observation of trial seam sample testing and documentation of results <br />• Observation and documentation of field seaming <br />• Identification of destructive seam sample test locations, observation of destructive <br />seam sample testing, and documentation of test results <br />• Observation and documentation of geomembrane repairs <br />• Observation and documentation of non-destructive pressure testing of fusion seams <br />and vacuum testing of extrusion seams and repairs <br />The following sections present a detailed description of each of the above activities. <br />6.1 Geomembrane Conformance Testing <br />Geomembrane manufactured by Agru America was installed for the Project. A <br />TRI/Environmental (TRI) (Amec Foster Wheeler subcontractor) representative sampled <br />geomembrane at the Agru plant in Fernley, Nevada for conformance testing. Samples <br />were sent to TRI’s geosynthetic laboratory for conformance testing. Geomembrane rolls <br />were not used on the project until approved by Amec Foster Wheeler based on <br />conformance test results.