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amec <br />Earth & Environmental <br />The LOB Delivery Road between approximate Stations 20+00 (+/-) to 25+50(+/-) were drilled and shot <br />this week. Rockbreakers has been working double shifts throughout the week, depending on weather. <br />Clay processing SLF at SGOSA Dump 5 has continued. <br />The mine has been transporting clay to the South Cresson clay stockpile off and on during the week. <br />The material screening plant located at the AGOSA (Arequa Gulch Overburden Storage Area) continues <br />to produce materials for the VLF and LOB. Processing drain cover fill for the LOB Pad is complete. <br />AMEC observed the completion of remedial work performed at underground working 2039. Underground <br />workings 2036 and 2030 backfilling continues for safety as the cut advances. A remedial plan for these <br />underground workings will be prepared once the cut near each working is completed. If the underground <br />workings are removed during the cut process, no remedial plan will be prepared. AMEC will document <br />that these workings were removed or that a Remedial Plan is required. Another underground working has <br />been found on the LOB Delivery Road. Survey crew will locate the working. <br />LOB Pad: Completed the subgrade preparation and structural fill for the anchor trench and SLF <br />placement. <br />Lone Star: The geomembrane deployment has been completed. The required testing, patching etc. is in the <br />process of being completed. <br />Concrete testing for the conveyor transfer 4 footing and millwright shop transformer pad. Test specimens <br />were cast for compressive strength. <br />Laboratory Testing Summary: <br />Laboratory testing continues (Gradations, Atterberg Limit, and Moisture-Density Relationships) for <br />previously sampled materials, throughout the shift. Permeability testing continues at an off-site <br />laboratory. <br />GENERAL PROJECT ITEMS <br />Summary of Concerns: <br />No Concerns <br />Summary of Planning Items: <br />Lone Star: Complete the LOB Pad geomembrane <br />Underground workings remediation in the LOB Delivery Road and Conveyor Corridor are continuing. <br />Continue blasting and transporting shot overburden to the Joe Dandy Main Cresson area. <br />Summary of Non-conformances: <br />None Issued <br />Summary of Meetings and Discussions: <br />CC& V.• <br />CC&V held a Weekly Contractors' meeting on April 14, 2009. Items discussed included Safety, <br />Environmental, Schedule, QC documentation, and CQA. <br />Sheet 5 of 11 <br />LOB Weekly Report WE 04.18.09.D