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amec'0_ <br />Earth & Environmental <br />G) PSSA Ore Slope Construction <br />1) VLF <br />Construction of the remaining portion of the PSSA ore slope continued between stations <br />G4+00 (+/-) and G16+00 (+/-), approximately 0 to 225 feet left of centerline using a CAT D-6 <br />LGP dozer and a CAT 279 skid steer loader. Existing ore was pushed over the previously <br />certified secondary geomembrane, constructing the toe of the slope (if applicable). Geotextile <br />was placed over any geomembrane within three feet of the slope toe. A 10-ton smooth drum <br />roller was used to compact the surface of the ore slope 2' or more above the geomembrane and <br />a plate compactor was used to compact the remaining portion of the slope. <br />1) Low Volume Collection System <br />1) Low Volume Solution Collection Piping <br />Placement of the low volume collection system continued at the LVCSF placement area shown <br />in Figure 6, advancing in front of the placement. Four-inch CPeP was placed and sandbagged <br />in accordance with design drawings, constructing the mainline and the tertiary lines. The <br />secondary geomembrane in the area was accepted prior to pipe placement. <br />2) Low Volume Solution Collection Fill (LVSCF) <br />Low volume solution collection fill (LVSCF) material placement within the Phase 5 VLF <br />continued. LVSCF was placed in the area show in Figure 6. The LVSCF was hauled from the <br />processing area to the placement area using CAT 740 haul trucks loaded by a 988 front-end <br />loader. The LVSCF was placed in a 3-foot lift using a CAT D-6 LGP dozer and a CAT D-7 <br />LGP dozer, expect were haul routes were established. Haul route consisted in five-foot lifts, to <br />be spread into 3-foot lifts later. Laborers were present at all times during placement holding the <br />low volume collection piping in place, removing debris/sandbags, and assisting the dozer <br />operator with lift thickness. All LVSCF was placed on previously approved secondary <br />geomembrane. AMEC field representatives observed placement constantly during the shift. <br />1) Material Processing <br />1) East Cresson Clay Borrow Area <br />Processing of SLF material continued this week. A CAT 320 excavator, a CAT 330 excavator, <br />a CAT 950 front-end loader, and tandem-axel haul trucks were used to excavate, haul, and <br />process the material. <br /> <br />Location This Week <br /> <br />(tons) Cumulative <br /> <br />(tons) <br />Comments <br />E Cresson Clay Processing 5,015 139,483 <br />S Cresson Cla Processing 0 201,199 Processing in area complete. <br />Squaw Gulch Processing 0 35,816 Processing in area complete. <br />Total 5,015 371,887 <br />2) Low Volume Solution Collection Fill Material <br />Processing of Low Volume Solution Collection Fill material continued at the Dump 4 LVSCF <br />Process. A CAT D-10 dozer and a skid steer loader were used to process the material. <br />VLF Weekly Report WE 06.12.10.D