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ameO <br />Earth & Environmental <br />centerline. Slope contouring was performed using various CAT dozers and various CAT <br />excavators. 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 and a John Deere 850 excavator were used to excavate structural fill <br />material from the following areas: between stations E1+00 (+/-) and E3+00 (+/-), <br />approximately 0 to 50 feet right of centerline; between stations E8+00 (+/-) and E10+00 (+/-), <br />approximately 75 to 100 feet left of centerline; between stations E 14+00 (+/-) and E 16+00 <br />(+/-), approximately 100 to 150 feet right of centerline; and between stations H4+00 (+/-) and <br />1-110+00 (+/-), approximately 50 to 100 feet left 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 (when necessary). Existing fill temperature were monitored and found to be <br />above 32°F before fill placement. An AMEC representative monitored ambient temperatures <br />on an hourly basis during fill placement. Fill placement was not performed during ambient <br />temperatures below 32°F. <br />Structural fill was placed in the following areas: between stations A54+00 (+/-) and A57+00 <br />(+/-), approximately 0 to 100 feet left of centerline; between stations B 10+00 (+/-) and B 14+00 <br />(+/-), approximately 0 to 100 feet left of centerline; between stations C0+50 (+/-) and C7+00 <br />(+/-), approximately 75 feet left of centerline to 75 feet right of centerline; between stations <br />F1+50 (+/-) and F2+75 (+/-), approximately 0 to 100 feet right of centerline; between stations <br />H30+00 (+/-) and H34+00 (+/-), approximately 0 to 100 feet left of centerline; and between <br />stations J8+00 (+/-) and J12+00 (+/-), approximately 0 to 150 feet left of centerline. Structural <br />fill was placed in 18" to 24" lifts using various CAT dozers. Each lift was moisture <br />conditioned using a CAT 773 water truck (when necessary) and compacted using a 10-ton <br />vibratory smooth drum compactor, passing over the entire fill surface at least 4 times (method <br />compaction technique is applicable). <br />Blast pattern drilling was performed between stations H2+00 (+/-) and H7+50 (+/-), <br />approximately 100 to 175 feet left of centerline. Blasting was performed on Monday <br />(4/12/2010), Tuesday (4/13/2010), and Friday (4/16/2010). No blasting was performed <br />Wednesday (4/14/2010), Thursday (4/15/2010), and Saturday (4/17/2010). <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 04.17.10.D