2011-11-19_REPORT - M1980244 (4)

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ame cr compactor, passing over the entire fill surface at least 4 times (method compaction technique was applicable). D) Soil Liner Fill 1) VLF No SLF placement was performed during the shift. (see Figure 2 for previously placed soil liner fill). E) Low Volume Solution Collection System 1) Low Volume Solution Collection Piping Placement of the low volume solution collection system continued at the LVCSF placement area shown on Figure 5, advancing in front of the placement. Four -inch CPeP was placed and sandbagged in accordance with design drawings, constructing the mainline and the tertiary lines. The secondary geomembrane in the area was accepted prior to pipe placement. 2) Low Volume Solution Collection Fill (LVSCF) Low volume solution collection fill (LVSCF) placement within the Phase 5 VLF continued. LVSCF was placed in the area show on Figure 5. The LVSCF was hauled from the processing area to the placement area using CAT 740 haul trucks loaded by a CAT 988 front -end loader. The LVSCF was placed in a 3 -foot lift using three CAT D -6 LGP dozers, a CAT D -7 LGP dozer and a CAT D -8 LGP dozer except where haul routes were established. Haul routes consisted of five -foot lifts, to be spread into 3 -foot lifts later. Laborers were present at all times during placement holding the low volume collection piping in place, removing debris /sandbags, and assisting the dozer operator with lift thickness. All LVSCF was placed on previously approved secondary geomembrane. AMEC field representatives monitored the LVSCF placement constantly. 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 Figure 6, 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. 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. VLF Weekly Report WE 09.18.10.1)