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ame <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 in Figure <br />3. Approximately 30,308 square feet of 80mil LLDPE was deployed using a Komatsu 200 <br />excavator and a John Deere 544 front -end loader with spreader -bar attachments. Subgrade was <br />inspected and approved by AMEC and Lonestar representatives prior to geomembrane <br />deployment (see. Figure 3). Approximately 1,374 linear feet of seam was fusion welded using <br />two fusion welding machine /welding technician combinations. Three destructive test samples <br />were marked during fusion seaming. All destructive tests performed were within project <br />specifications. Non - destructive testing was performed for fusion welded seams. Repairs were <br />performed using the extrusion welding method for all marked defects. Vacuum testing was <br />performed for all extrusion welded seams and repairs. Progress slowed due to saturated work <br />areas. <br />A large torn piece of 80 mil single sided textured geomembrane was encountered at the leading <br />edge of DCF placement. After inspection of the geomembrane piece by AMEC, Ames, and <br />CC &V representatives, it was decided that the piece was torn from the primary liner system. A <br />John Deere 35D excavator and laborers were used to expose the primary geomembrane in an <br />attempt to find the damage. The damage was not encountered during the week and <br />geomembrane exposure was paused on Saturday, July 30 Ames has contracted Leak <br />Location Services, Inc. to perform an electronic leak detection survey. An AMEC field <br />representative observed the geomembrane exposure constantly. <br />During the Cresson blasts, an AMEC field representative observed the geomembrane and no <br />damage was found. <br />B) Geomembrane Exposure <br />1) VLF <br />Exposure of previously installed geomembrane between stations El1+50 ( + / -) and E12 +50 ( +/- <br />) and between stations E21 +50 ( + / -) and E23 +75 ( + / -) was performed using a John Deere 35D <br />excavator and laborers. An AMEC field representative observed the geomembrane exposure <br />constantly. <br />C) Anchor Trench <br />1) VLF <br />Temporary anchor trench excavation continued between stations H7 +50 ( + / -) and H8 +00 ( + / -) <br />using a CAT 312 excavator and one laborer. The anchor trench was inspected by an AMEC <br />field representative and found to be constructed in accordance with design drawings and <br />project specifications. <br />VLF Weekly Report WE 07.30.2011 <br />