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ACI%k <br />ame <br />Earth & Environmental <br />B) Cut to Fill <br />1) LOB Delivery Road <br />Oversize material was placed beyond the end of the LOB Delivery Road (beyond station <br />44+47.34). (Double shift work) <br />A CAT 345 Excavator and CAT 988 Loader excavated the existing slope just beyond the end <br />of the LOB Delivery Road (beyond station 44+47.34) for use as Structural Fill for the final <br />layers on the LOB Pad and the LOB Delivery Road. The material was hauled using 40-ton <br />articulating haul trucks and spread using a CAT D-6 dozer in 18 to 24-inch lifts (based on rock <br />size). Field observations indicated there was greater than 30% rock retained on the 3/4 -inch <br />sieve. Moisture conditioning was performed using a CAT 773-water truck. A CAT vibratory <br />smooth drum roller was used to compact the structural fill over the entire surface a minimum <br />of 4-passes. Ambient temperatures were observed during fill placement. <br />2) LOB Conveyor Corridor/Transfer Station <br />Retaining wall backfill scheduled to start at Transfer Station #5 was delayed due to rain on <br />Thursday and Friday. <br />Minor structural fill placement and site grading was completed for Transfer Station #6. <br />Structural fill material was hauled from the LOB Delivery Road cut using 40-ton articulating <br />haul trucks and using a CAT D6 dozer for final site grading. Structural Fill was placed in 18 to <br />24-inch lifts (based on rock size). Field observations indicated there was greater than 30% rock <br />retained on the 3/4 -inch sieve. Compaction was performed using a CAT vibratory smooth <br />drum roller passing over the entire surface of each lift a minimum of four passes. This process <br />was performed in accordance with the method specification and a previously established test <br />fill. Ambient temperatures were observed during fill placement. <br />C) LOB Pad Structural Fill <br />Structural Fill from the LOB Delivery Road cut between stations 23+00 (+/-) and 29+00 (+/-) <br />and excavated material just beyond the end of the LOB Delivery road was placed on the LOB <br />Pad. Fill placement was completed around the perimeter of the LOB nearing grade elevation <br />of 10,060. The fill was transported using articulating 40-ton haul trucks. Structural Fill was <br />placed in 18 to 24-inch lifts (based on rock size). Field observations indicated there was greater <br />than 30% rock retained on the 3/4 -inch sieve. Moisture conditioning of the fill was performed <br />using a CAT 773 water truck. Each lift was compacted with a smooth drum vibratory roller a <br />minimum of four passes over the entire surface as per the method compaction technique. <br />Ambient temperatures were observed during fill placement. <br />D) MSE Walls <br />1) MSE Wall #2 <br />During the week, work started at the MSE Wall No. 2 (Hilfiker Wall) located at the LOB Pad. <br />Ames continued working on the third section of the Hilfiker Wall and then backfilled with face <br />rock and Hilfiker Wall Backfill. A vertical strip drain was installed intersecting with the 4- <br />Sheet 2 of 9 <br />LOB Weekly Report WE 05.23.09.D