2012-10-17_REPORT - M1980244 (3)

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An WTI Ime Subgrade temperatures were monitored by an AMEC field representative prior to SLF placement. Fill material was not placed until the entire fill area was at or above 32 °F. Location This Week Cumulative Comments (tons) (tons) E.Cresson Clay Process 0 81,150 SLF processing is temporarily paused Total 0 81,510 SLF processing is temporarily paused E) Drain Cover Fill (DCF) Drain cover fill (DCF) placement performed in the area shown on Figure 6. The DCF was hauled from the processing area to the placement area using 40 -ton articulating haul trucks loaded by a CAT 988 front -end loader. The DCF was placed in a 2 -foot lift using various CAT dozers except where haul routes were established. Haul routes consisted of four -foot lifts to be spread into 2- foot lifts later. Laborers were present at all times during placement removing debris /sandbags and assisting the dozer operator with lift thickness. All DCF was placed on previously approved primary geomembrane. Fill material placed during ambient temperatures below 32 °F averaged 46 °F to 50 °F. AMEC field representatives monitored the DCF placement constantly. Processing of Drain Cover Fill material was temporarily paused and may be complete for the Mill Site Earthworks project. Location This Week Cum Comments oulative DCF Process 0 228,613 DCF processing is temporarily paused Total 0 228,613 DCF processing is temporarily paused F) Miscellaneous No work performed during the week. II) Geosynthetics A) Geomembrane Delivery Two loads (22 rolls) of 80mil LLDPE double sided texture geomembrane was delivered to site during the shift. The load was delivered on a flat bed truck in good condition. The rolls were unloaded using a CAT 950 front -end loader with forks attached. The geomembrane was placed on three pieces of 4" HDPE pipe, staked two rolls high. An AMEC field representative inventoried the geomembrane and was present at all times during the unloading of the geomembrane. B) Geomembrane Installation Geomembrane installation continued in the area shown on Figure 4 performing deployment, seaming, and repair /QC activities. Approximately 417,784 square feet of 80mil LLDPE was deployed using a John Deere 544 front -end loader with spreader -bar attachments and a John Deere 200 skid -steer loader. Subgrade was inspected and approved by AMEC and Lonestar representatives prior to geomembrane deployment. Approximately 19,690 linear feet of seam was fusion welded using four fusion welding machine /welding technician combinations. Forty -four destructive test samples were marked during fusion seaming. Approximately 62 linear feet of seam was extrusion welded using on extrusion welding machine /welding technician combinations. One destructive test sample was marked during fusion seaming. All destructive tests performed were within project specifications. Non - destructive testing was performed for fusion welded MEW Weekly Report WE 10.06.2012