2011-11-19_REPORT - M1980244 (3)

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amecO vtrcnmental 2) Low Volume Solution Collection Fill Processing of Soil Liner Fill material continued at the South Cresson Clay Process. A CAT D -8 dozer and a CAT 980 front -end loader were used to process the material. Location Week umulative Comments tons (tons) Dump 4 LVSCF Processing 32,508 60,321 H) ADR and Crusher Waterlines Pipe trench excavation and bedding was performed throughout the week for the Crushing waterline using a CAT 330 excavator and a CAT 966 front -end loader. The pipe bedding material was moisture conditioned and compacted using the bucket of the CAT 330 excavator. Approximately 150 linear feet of pipe trench was excavated and bedded during the week. Approximately 150 linear feet of 10" HDPE pipe was installed in the Crushing waterline trench. Preparations for ADR waterline tie -ins were performed throughout the week. Exposure of existing waterlines was performed near stations A24 +00 ( + / -) and E22 +00 ( + / -). The 10" HDPE ADR waterline was tied into the system near station A24 +00 ( + / -). I) Miscellaneous No work performed during the week. III) Underground Workings A) Drilling Confirmation drilling was performed for Underground Workings #3009 and #3010. Drill patterns were established by an AMEC representative around the workings on four -foot centers, per the submitted remediation plan. Forty-nine holes were drilled for a approximate total 2450 feet. Two voids were encountered at the Underground Working #3010 location identifying the Kitty Lane shaft. John Lupo will submit a remediation plan for these workings. B) Mine Shaft /Stope Remediation The exposed portion of the crown pillar at Underground Workings #3006 and #3007 was collapsed using a CAT 330 excavator attached with a rock hammer. A CAT 330 excavator was then used to remove them material from the working. Material in the working seamed to be loose fill from previous blasting. After reviewing notes from the confirmatory drilling in the area it was decided to blast the remaining portion of the crown pillar. The crown pillar at Underground Working #3006 and #3007 was blasted, collapsing the pillar. The workings were inspected by AMEC representatives after blasting and the decision was made to lay the perimeter of the working back and place a concrete plug in the working. John Lupo will submit a remediation plan the workings. C) Lateral/Slot Remediation No work performed during the week. VLF Weekly Report WE 01.16.IO.D.doc