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Adlttlk <br />amec <br />Earth & Environmental <br />50 to 250 feet right of centerline. Slope contouring was performed using various CAT dozers. <br />Material generated as the cut progressed was pushed down the slope. <br />D) Overburden to Stockpile <br />1) VLF <br />Oversize rock within the Phase 5 VLF fill area was removed from fill areas and hauled to the <br />overburden stockpile area east of the east perimeter road near stations A28+00 (+/-) to A36+00 <br />E) Cut to Fill <br />1) VLF <br />A CAT 385 excavator, a CAT 375 excavator, and a John Deere 850 excavator were used to <br />excavate structural fill material from the following areas: between stations A7+50 (+/-) and <br />A23+00 (+/-), approximately 200 to 300 feet right of centerline; between stations H2+00 (+/-) <br />and H18+00 (+/-), approximately 125 feet left of centerline to 100 feet right of centerline; <br />between stations H26+00 (+/-) and H31+00 (+/-), approximately 75 to 150 feet left of <br />centerline; and between stations J12+00 (+/-) and J22+00 (+/-), approximately 100 to 300 feet <br />left of centerline. The structural fill material was loaded into CAT 777 haul trucks and hauled <br />to fill areas. <br />Prior to structural fill placement existing fill areas were ripped and frost was allowed to thaw <br />or was removed. Existing fill temperature were monitored and found to be above 32°F before <br />fill placement. An AMEC representative monitored ambient temperatures on an hourly basis <br />during fill placement. Fill temperatures were monitored during ambient temperatures below <br />32°F and averaged 33°F to 40°F. <br />Structural fill was placed in the following areas: between stations A11+00 (+/-) and A23+00 <br />(+/-), approximately 200 to 300 feet left of centerline: between stations A52+00 (+/-) and <br />A57+00 (+/-), approximately 0 to 175 feet left of centerline; between stations 1-18+00 (+/-) and <br />H14+00 (+/-), approximately 50 to 100 feet right of centerline; H26+00 (+/-) and H30+50 <br />(+/-), approximately 25 feet left of centerline to 75 feet right of centerline; J3+00 (+/-) and <br />J10+00 (+/-), approximately 0 to 200 feet right of centerline; and between stations J12+00 (+/-) <br />and J22+00 (+/-), approximately 200 to 300 feet left of centerline. Structural fill was placed in <br />18" to 24" lifts using various CAT dozers. Each lift was moisture conditioned using a CAT <br />773 water truck (when necessary) and compacted using a 10-ton vibratory smooth drum <br />compactor, passing over the entire fill surface at least 4 times (method compaction technique is <br />applicable). Ambient and fill temperatures were monitored and recorded during fill placement. <br />Blast pattern drilling was performed between stations 1-12+00 (+/-) and H6+00 (+/-), <br />approximately 50 to 100 feet right of centerline. Blasting was performed on Tuesday <br />(3/2/2010) and Saturday (3/5/2010). No blasting was performed Monday (3/1/2010), <br />Wednesday (3/3/2010), Thursday (3/4/2010), and Saturday (3/6/2010). <br />VLF Weekly Report WE 03.06.10.D.doc