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ameO <br />Earth & Environmental <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 and a John Deere 850 excavator were used to excavate structural fill <br />material from the following areas: between stations E0+00 (+/-) and E1+50 (+/-), <br />approximately 10 to 50 feet left of centerline; between stations F3+00 (+/-) and F8+50 (+/-), <br />approximately 30 to 300 feet right of centerline; between stations H5+00 (+/-) and H12+00 <br />(+/-), approximately 0 to 100 feet left of centerline; and between stations K6+00 (+/-) and <br />K8+00 (+/-), approximately 75 to 125 feet right of centerline. The structural fill material was <br />loaded into CAT 777 haul trucks and hauled 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 ranged between 33°F to 36°F. <br />Structural fill was placed in the following areas: between stations A20+00 (+/-) and A26+00 <br />(+/-), approximately 25 to 200 feet left of centerline; between stations A54+00 (+/-) and <br />A57+00 (+/-), approximately 30 to 100 feet left of centerline; between stations C0+50 (+/-) and <br />C7+75 (+/-), approximately 75 feet left of centerline to 75 feet right of centerline; between <br />stations F7+50 (+/-) and F12+50 (+/-), approximately 150 feet left of centerline and 30 feet <br />right of centerline; between stations H32+00 (+/-) and H34+00 (+/-), approximately 10 to 100 <br />feet left of centerline; and between stations J7+00 (+/-) and J 10+00 (+/-), approximately 40 to <br />150 feet left of centerline. Structural fill was placed in 18" to 24" lifts using various CAT <br />dozers. Each lift was moisture conditioned using a CAT 773 water truck (when necessary) and <br />compacted using a 10-ton vibratory smooth drum compactor, passing over the entire fill <br />surface at least 4 times (method compaction technique is applicable). Ambient and fill <br />temperatures were monitored and recorded during fill placement. <br />Blast pattern drilling was performed between stations H2+00 (+/-) and H10+00 (+/-), <br />approximately 50 to 150 feet left of centerline. Blasting was performed on Monday (4/5/2010), <br />Tuesday (4/6/2010), Wednesday (4/7/2010), and Thursday (4/8/2010). No blasting was <br />performed Friday (4/9/2010) or Saturday (4/10/2010). <br />F) Material Processing <br />1) East Cresson Clay Borrow Area <br />Processing of Soil Liner Fill material continued this week. A CAT D-8 dozer, a CAT 320 <br />excavator, a CAT 966 front-end loader, and tandem-axel haul trucks were used to excavate, haul, <br />and process the material. <br />VLF Weekly Report WE 04.10.10.13