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amee <br />IV)VLF Geosynthetics <br />A) Geomembrane Installation <br />1) VLF <br />Geomembrane installation within the Phase 5 VLF resumed performing deployment, seaming, <br />and repair /QC activities. Geomembrane installation was performed in the area shown on <br />Figure 3. Approximately 208,959 square feet of 80mil LLDPE was deployed using a Komatsu <br />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 3). Approximately 10,589 linear feet of seam was fusion welded using <br />three fusion welding machine /welding technician combinations. Twenty -one destructive test <br />samples were marked during fusion seaming. Approximately 742 linear feet of seam was <br />extrusion welded using three extrusion welding machine /welding technician combinations. <br />Five destructive test sample was marked during extrusion seaming. All destructive tests <br />performed were within project specifications. Non - destructive testing was performed for fusion <br />welded seams. Repairs were performed using the extrusion welding method for all marked <br />defects. Vacuum testing was performed for all extrusion welded seams and repairs. <br />During the Cresson blast, an AMEC field representative observed the geomembrane and no <br />damage was noted. <br />B) Geomembrane Exposure <br />1) VLF <br />Exposure of previously installed geomembrane between stations El 1 +50 ( + / -) and El3 +00 <br />( + / -) and between stations E21 +00 ( + / -) and E22 +50 ( + / -) was performed using a John Deere <br />35D excavator and laborers. An AMEC field representative observed the geomembrane <br />exposure constantly. <br />C) Anchor Trench <br />1) VLF <br />Temporary anchor trench excavation continued between stations H2 +75 ( + / -) and H7 +50 ( + / -) <br />using a John Deere 35D excavator and one laborer. The anchor trench was inspected by an <br />AMEC field representative and found to be constructed in accordance with design drawings <br />and project specifications. <br />Anchor trench backfill was performed between stations H4 +50 ( + / -) and H12 +50 ( + / -), near <br />centerline using a John Deere 35D excavator, a vibratory plate compactor and laborers. An <br />AMEC field representative observed the backfill and it was found to be constructed in <br />accordance with design drawings and project specifications. <br />D) Geomembrane Acceptance <br />1) VLF <br />Primary 80mil geomembrane (P587 -P597) shown on Figure 4 was inspected by AMEC and <br />Lonestar representatives and found to be installed within project specifications and acceptable <br />for continued construction activities. <br />VLF Weekly Report WE 08.13.2011 <br />