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amec <br />Earth & Environmental <br />F) Material Processing <br />1) East Cresson Clay Borrow Area <br />Processing of Soil Liner Fill material continued this week. A CAT D-8 dozer, a CAT 320 <br />excavator, a CAT 966 front-end loader, and tandem-axel haul trucks were used to excavate, haul, <br />and process the material. <br />Location This emulative Comments <br />E Cresson Clay Processing 13,246 35,216 <br />S Cresson Clay Processing 0 201,199 Processing in area complete. <br />Squaw Gulch Processing 0 35,816 Processing in area complete. <br />Total 13,246 265,620 <br />2) Low Volume Solution Collection Fill Material (LVSCF) <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 /> This Week Cumulative <br />Location Comments <br /> tons <br />Dump 4 LVSCF Processing 36,045 177,303 <br />G) Miscellaneous <br />No work was performed during the week. <br />III) Underground Workings <br />A) Drilling/Excavation <br />Confirmatory drilling was performed for Underground Working #3012. A drill pattern was set out <br />by an AMEC field representative. Sixty-one holes were dilled encountering thirty-six voids. An <br />approximate total of 3050 feet was drilled. An AMEC representative observed the confirmatory <br />drilling constantly. <br />B) Mine Shaft/Stope Remediation <br />Grouting of miss (no void) holes was performed at Underground Workings #3012. <br />Remediation of Underground Workings #3006/#3007 continued with the placement of the <br />concrete plug. Approximately 100 cubic yards of 4000-psi concrete was placed in the previously <br />prepared opening. The area inspected by an AMEC representative prior to concrete placement and <br />found to be constructed properly in competent and frost/ice free material. Two samples were <br />obtained randomly during concrete placement. Slump testing, air-entrainment testing, temperature <br />testing, and casting of five 6" x 12" cylinders was performed for each sample. All field properties <br />testing results were with in project specifications and performed in accordance with ASTM/ACI <br />standards. The cylinders cast will be transported to an off-site facility and tested for compressive <br />strength at specified curing ages. <br />VLF Weekly Report WE 03.06.10.D.doc