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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 29 <br />7.0 Project Deviations <br />7.1 Drawing Deviations <br />During construction several adjustments were made in the field to fit actual site <br />conditions during construction. A list of those changes are discussed below. <br />• Localized changes in grading occurred throughout the project during construction. <br />These slight deviations have been recorded in the ROC drawings in Appendix A. <br />These changes occurred to adjust to actual field conditions to better accommodate <br />the design intent. <br />• Localized changes in underdrain and HVSCS pipe alignments occurred throughout <br />the project during construction. These slight deviations have been recorded in the <br />ROC drawings in Appendix A. These changes occurred to adjust to actual field <br />conditions to better accommodate the design intent. <br />• Details 2 and 3 on IFC Drawing A220 indicate a fusion weld between the phased <br />liner connections. An extrusion weld was used instead and is acceptable. <br />The above drawing additions or deviations meet the intent of the SQVLF design as <br />permitted. <br />7.2 Project Technical Specification Deviations <br />During construction, requests were made by the contractor (Ames) to deviate from the <br />project technical specifications. Below is a summary of the project technical specification <br />deviations. <br />• Section 02776 (Appendix E) of the project technical specification states “The rolls <br />(of liner) shall be stored on a prepared surface (not wooden pallets) and should not <br />be stacked more than two rolls high”. Amec Foster Wheeler allowed the rolls of liner <br />to be stacked three rolls high provided safety measure were in place to prevent rolls <br />from shifting at any time and personnel refrain from climbing on the rolls to access <br />the lifting straps. <br />• The resin lot certificates provided for the welding rod do not match the resin lots used <br />during production of the 80-mil DSMS LLDPE geomembrane; since the resin is the <br />same, the lots were accepted for use per project technical specifications. Extrusion <br />weld integrity was verified with trial welds and destructive tests. <br />• Amec Foster Wheeler allowed the use of Low Volume Solution Collection Fill <br />material in place of LDF. The properties of the two materials are very similar, and