2011-11-19_REPORT - M1980244 (4)

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2) Drain Cover Fill (DCF) Drain cover fill (DCF) placement within the Phase 5 VLF continued. DCF was placed in the area show on Figure 6. The DCF was hauled from the processing area to the placement area using CAT 740 haul trucks. The DCF was placed in a 2 -foot lift using a CAT D -6 LGP dozer except where haul routes were established. Haul route consisted of five -foot lifts to be spread into 2 -foot lifts later. Laborers were present at all times during placement holding the high volume collection piping in place, removing debris /sandbags, and assisting the dozer operator with lift thickness. All DCF was placed on previously approved primary geomembrane. AMEC field representatives monitored the DCF placement constantly. DCF was also placed over previously placed DCF constructing a 5 -foot road to access the south toe berm. This was performed using a CAT D -6 LGP dozer. II) Storm Water Management A) Best Management Practices Best Management Practices are being observed throughout the VLF Phase 5 Project. III) Material Processing A) Drain Cover Fill Process Area Drain Cover Fill (DCF) was processed during the week. Location This Week Cumulative Comments (tons) (tons) DCF Process 19,064 142,010 Total 19,064 142,010 IV)VLF Geosynthetics A) Geomembrane Installation 1) VLF Geomembrane installation within the Phase 5 VLF continued performing deployment, seaming, and repair /QC activities. Geomembrane installation was performed in the area shown on Figure 3. Approximately 237,803 square feet of primary 100mil LLDPE was deployed using a John Deere 200 excavator and a John Deere 544 front -end loader with spreader -bar attachments. Subgrade was inspected and approved by AMEC and Lone Star representatives prior to geomembrane deployment (see Figure 3). Approximately 11,964 linear feet of seam was fusion welded using up to two fusion welding machines. Twenty -five destructive test samples were marked during fusion seaming. All destructive tests performed were within project specifications. Non - destructive testing was performed for fusion welded seams. Repairs were performed using the extrusion welding method for all marked defects. Vacuum testing was performed for all extrusion welded seams and repairs. B) Anchor Trench 1) VLF Anchor trench backfill was performed between stations C3 +00 ( + / -) and C7 +50 (excluding the low volume riser boots) and between stations G23 +00 ( + / -) and G30 +00 ( + / -) using a John Deere 35D excavator and laborers. An AMEC representative observed and inspected the VLF Weekly Report WE 09.25.10.13