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AIC%k <br />ame <br />Earth & Environmental <br />The LOB Delivery Road between approximate stations 32+00 (+/-) to 27+50 (+/-) and stations 2+00 (+/-) <br />to 3+00 (+/-) were drilled and shot this week. Rockbreakers has been working double shifts throughout the <br />week. <br />AMEC observed the backfilling of underground working 2020. Underground workings 2036 and 2030 <br />were backfilled during excavation in the cut area for safety. Underground working 2015 (Tornado Shaft) <br />was exposed on Friday. A small amount of backfilling was performed to level the surface around the <br />shaft. <br />Observed and assessed the damage to the LOB Pad geomembrane due to blasting on the LOB Delivery <br />Road. All the panels will be removed with the exception of the 5H: IV slope tie-in to the Phase IV <br />geomembrane. <br />Concrete testing for the Conveyor Transfer Station #4, retaining wall: Test specimens were cast for <br />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. Geogrid samples have been delivered to an off site-testing laboratory for conformance testing. <br />Concrete cylinders have been delivered to an off site-testing laboratory for compressive strength testing. <br />GENERAL PROJECT ITEMS <br />Summary of Concerns: <br />No Concerns <br />Summary of Planning Items: <br />Repairs on the LOB Pad geomembrane, work will start on Sunday. Continue underground workings <br />remediation in the LOB Delivery Road and Conveyor Corridor. Continue blasting and transporting shot <br />overburden to the Joe Dandy Main Cresson backfill. <br />Summary of Non-conformances: <br />None Issued <br />Summary of Meetings and Discussions: <br />CC& V.• <br />CC&V held a Weekly Construction meeting on April 21, 2009. Items discussed included Safety, <br />Environmental, Schedule, QC documentation, and CQA. <br />Ames Construction: <br />Daily safety meetings are conducted prior to each shift. These meetings are used to discuss work areas, <br />procedures, testing requirements, etc. <br />AMEC: <br />Derek Witter, P.E., Project Manager - On site Monday and Tuesday to review general project status. <br />Sheet 4 of 9 <br />LOB Weekly Report WE 04.25.09.D.doc