2016-01-14_REPORT - M1980244 (15)

Home Browse Search

Cripple Creek & Victor Gold Mining Company Squaw Gulch VLF Phase 1 (9,550-foot Elevation Bench to Geomembrane Panel P1635) Final Report Quality Assurance Monitoring & Test Results January 2016 Project No.: 74201125N0 Page 24 Prior to the 80-mil LLDPE DSMS geomembrane arrival to site, Amec Foster Wheeler performed 49 conformance tests on the geomembrane, at a frequency of one test per 145,294 square feet. The conformance testing includes all of the geomembrane on-site, not just what was used within this Project boundary. Conformance testing for the 80-mil DSMS LLDPE geomembrane used to construct the liner system met project technical specifications. Conformance test results for the 80-mil DSMS LLDPE are presented in Appendix K.1. Prior to the 40-mil LLDPE smooth geomembrane arrival to site, Amec Foster Wheeler performed 1 conformance test on the geomembrane, at a frequency of one test per 145, square feet. The conformance testing includes all of the geomembrane on-site, not just what was used within this Project boundary. Conformance testing for the 40-mil smooth LLDPE geomembrane used to construct the liner system met project technical specifications. Conformance test results for the 40-mil smooth LLDPE are presented in Appendix K.2. 6.2 Deployment Monitoring Geomembrane panel deployment monitoring performed by Amec Foster Wheeler included: • Observation of panel surface condition and panel overlap • Assignment of panel numbers • Verification of factory roll number and receipt of complete certification prior to allowing deployment • Measurement of sheet thickness • Documentation of deployed panel lengths • Development of panel layout record drawing Prior to the deployment of geomembrane, Amec Foster Wheeler and ECA verified that the SLF surface was free of soft spots, protrusions, angular particles, abrupt grade changes, and loose soil. Amec Foster Wheeler and ECA also verified the surface had been proof-rolled and was free of desiccation cracks. Where the surface of the SLF did not meet project technical specifications, Ames repaired the area and re-compacted the surface. Amec Foster Wheeler prepared SLF surface acceptance forms. After inspections of the finished surface, an Ames, Amec Foster Wheeler and CC&V representative signed the acceptance forms. The SLF surface acceptance certificates are presented in Appendix G. Amec Foster Wheeler assigned each geomembrane panel a number. Geomembrane panels were designated with a “P” followed by an individual panel number. Some panels