2011-11-19_REPORT - M1980244 (4)

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right of centerline. Structural fill was placed in 10" to 24" lifts using various CAT dozes. Each lift was moisture conditioned using a CAT 773 water truck (when necessary) and compacted using a 10 -ton vibratory smooth drum compactor, passing over the entire fill surface at least 4 times (method compaction technique was applicable). D) Soil Liner Fill 1) VLF Soil liner fill (SLF) placement continued in the areas shown on Figure 2. One CAT 385 excavator loaded 40 ton articulating and CAT 777 haul trucks from the temporary stockpile locations. Subgrade was approved and moisturized prior to placement using a tandem -axel water truck. Placement was performed using a CAT D -6 LGP dozer, a CAT D -7 dozer, and a CAT skid steer loader in a one -foot compacted lift. Moisture conditioning of SLF material was performed using a tandem -axel water truck and compaction was achieved using a 10 -ton vibratory smooth drum compactor. Nuclear density testing, moisture verification, and depth checks were all performed, producing results within project specifications. Test locations were surveyed by Ames. E) Low Volume Solution Collection System 1) Low Volume Solution Collection Fill ( LVSCF) Finishing of the LVSCF surface continued in front of the geomembrane deployment using a skid steer loader. F) High Volume Solution Collection System 1) High Volume Solution Collection Piping Placement of the high volume collection system continued at the DCF placement area shown on Figures 5a and 5b, advancing in front of the placement. CPeP was placed and sandbagged in accordance with design drawings and project specifications. The primary geomembrane in the area was accepted prior to pipe placement. Placement of the high volume solution collections risers was performed. The risers were placed using a boom truck. A survey prism was placed on top of each riser section and used to ensure each section was plumb before welding them into place. The installation was observed and inspected by an AMEC field representative and found be constructed in accordance with the design drawings and project specifications. Construction of the 26" high volume solution collection piping was performed fusing the previously perforated pipe sections together. Placement of the 26" high volume solution collection piping was performed placing nine sections of 26" pipe were placed starting at the manifold heading north. Approximately 360 lineal feet of the pipe was installed. Backfilling of the pipe was performed after placement. AMEC field representatives observed the pipe placement and backfill. Pipe installation was found to be constructed in accordance with the design drawings and project specifications. 2) Drain Cover Fill (DCF) Drain cover fill (DCF) placement within the Phase 5 VLF continued. DCF was placed in the area show on Figures 5a and 5b. The DCF was hauled from the processing area to the VLF Weekly Report WE 10.09.10.1)