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AWOL <br />amec <br />Earth & Environmental <br />B) Cut to Fill <br />1) LOB Delivery Road <br />Between stations 14+00 (+/-) and 16+00 (+/-) the LOB Delivery Road is to grade. Night work: <br />Cut from stations 30 +00 (+/-) to 26+00 (+/-) to fill between stations 42+00 (+/-) to 44+50 (+/-) <br />has started. <br />2) LOB Conveyor Corridor <br />Structural fill placement during the week was completed at Transfer Station #4 and #6. The <br />structural fill material was spread in 24" lifts using a CAT D6 dozer and compacted using a <br />CAT 563 vibratory smooth drum compactor passing over the entire surface of the lift at least 4 <br />times. This process was performed in accordance with the method specification and a <br />previously established test fill. Structural fill material was hauled from the LOB Delivery Road <br />cut areas using the Volvo A40D haul trucks. Ambient and fill temperatures were monitored <br />during fill placement. No frozen materials were placed. <br />The remaining cut at Transfer Station #5 was completed. <br />The retaining wall footing for Transfer Station #5 and the gravity take-up columns located at <br />station 0+00 were formed and reinforcing steel was placed. Approximately 40 cubic yards of <br />transit mixed concrete was placed at both locations with a 4.25-inch slump and an air content <br />of 5.0% (Field physical properties testing performed by Ground Engineering). AMEC cast <br />three concrete cylinders for Quality Assurance testing. <br />C) LOB Pad Drain Cover Fill <br />1) Placement <br />After geomembrane acceptance, Drain Cover Fill placement was performed during the week <br />starting at the bottom of the 5H: IV slope adjacent to Phase IV VLF. A D6R LGP dozer was <br />used to spread the Drain Cover Fill in a 24" lift. An AMEC representative monitored Drain <br />Cover Fill constantly during placement. Prior to placing the Drain Cover Fill, 23-feet of 6-inch <br />CPT perforated drain pipe was installed along the north berm tying into the pipe from the <br />Phase IV VLF. An additional 100-feet of 4-inch perforated drain pipe was installed along the <br />Phase IV and LOB Pad tie-in. The pipe was attached to the existing 4" CPT pipe from the <br />Phase IV VLF. All installed CPT piping was covered during the placement of Drain Cover Fill. <br />After the 5H: IV slope placement was complete, placement was performed from the corner <br />working south. One record sample (LOBDCF-I-R) was obtained during placement. Placement <br />of Drain Cover Fill will continue into next week. <br />D) MSE Walls <br />1) MSE Wall <br />No work performed during the week. <br />E) AGOSA (Arequa Gulch Overburden Storage Area) Material Processing <br />Material processing was performed intermittently throughout the week. <br />Sheet 2 of 10 <br />LOB Weekly Report WE 05.02.09.D.doc