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amed'YA <br />Earth & Environmental <br />V) VLF Geosyntheties <br />Geomembrane installation within the Phase 5 VLF began Monday May 7, 2010, performing <br />deployment, seaming, and repair/QC activities. Geomembrane installation was performed between <br />stations F0+00 (+/-) and 175+00 (+/-), approximately 0 to 300 feet right of centerline (see Figure 4). <br />Approximately 146,796 square feet of 100mil LLDPE single sided textured was deployed using a John <br />Deere 200 excavator and a John Deere 544 front-end loader with spreader-bar attachments. Subgrade <br />was inspected and approved by AMEC and Lonestar representatives prior to geomembrane <br />deployment (see Figure 4). Approximately 8,111 linear feet of seam was fusion welded during <br />deployment using three fusion welding machines. Eighteen destructive test samples were marked <br />during seaming. Approximately 103 linear feet of seam was extrusion welded using one extrusion <br />welding machine. One destructive test sample was marked during extrusion seaming. All destructive <br />sample testing met project specifications. Non-destructive testing was performed for all fusion welded <br />seams. Repairs were performed using the extrusion welding method for all marked defects. Vacuum <br />testing was performed for all extrusion welded repairs and seams. <br />Panels S 1 through S20 (secondary- 100mi1) were inspected by AMEC, Ames, Lonestar, and CC&V <br />representatives, certifying the area for ore placement (see Figure 5). <br />Four loads of 100mil LLDPE smooth geomembrane were delivered to site during the week for a total <br />of 48 rolls. All loads were delivered on flat bed trucks in good condition. The rolls were unloaded <br />using a CAT 966 front-end loader with forks attached. The geomembrane was placed on three pieces <br />of 4" HDPE pipe, staked two rolls high. An AMEC field representative was present at all times during <br />unloading of the geomembrane. The AMEC representative also inventoried the geomembrane, as it <br />was unloaded. <br />CQA ACTIVITIES: <br />SUMMARY: <br />The CQA activities performed consisted of observing, documenting and recording the construction <br />activities of the contractor. <br />AMEC observed structural fill placement within the Phase 5 VLF fill area. Ambient temperatures were <br />monitored during fill placement. <br />AMEC inspected and approved subgrade for SLF placement within the Phase 5 VLF. <br />AMEC observed, performed necessary testing, obtained moisture samples, and assisted in the placement <br />of SLF material within the Phase 5 VLF. <br />AMEC inspected and approved subgrade for geomembrane deployment within the Phase 5 VLF. <br />AMEC observed, logged data, and assisted in the installation of geomembrane within the Phase 5 VLF. <br />AMEC inspected and approved secondary geomembrane for ore placement within the Phase 5 VLF. <br />AMEC observed construction of the PSSA ore slope constantly. <br />VLF Weekly Report WE 05.22.10.D