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amec <br />Earth 8 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 A18+00 (+/-) and A24+00 (+/-), <br />approximately 50 to 150 feet left of centerline; between stations H0+00 (+/-) and H9+50 (+/-), <br />approximately 50 feet left of centerline to 100 feet right of centerline; between stations; J14+00 <br />(+/-) and J16+00 (+/-), approximately 20 to 60 feet right of centerline; and between stations <br />K11+00 (+/-) and K13+00 (+/-), approximately 120 to 200 feet right of centerline. The <br />structural fill material was 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 39°F. <br />Structural fill was placed in the following areas: between stations A54+00 (+/-) and A59+00 <br />(+/-), approximately 70 feet left of centerline to 20 feet right of centerline; between stations <br />B8+00 (+/-) and B10+00 (+/-), approximately 50 feet left of centerline to 50 feet right of <br />centerline; between stations C1+75 (+/-) and C6+00 (+/-), approximately 20 to 80 feet left of <br />centerline; between stations 50 feet left of centerline to 70 feet right of centerline; and between <br />stations J3+00 (+/-) and J16+00 (+/-), approximately 0 to 150 feet right of centerline. <br />Structural 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). Ambient and fill temperatures were monitored and <br />recorded during fill placement. <br />Blast pattern drilling was performed between stations H1+50 (+/-) and H9+00 (+/-), <br />approximately 90 feet left of centerline to 75 feet right of centerline. Blasting was performed <br />on Monday (3/22/2010), Tuesday (3/23/2010), Wednesday (3/24/2010), Thursday (3/25/2010), <br />and Friday (3/26/2010). No blasting was performed Saturday (3/27/2010). <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. The processing plant went down Tuesday (3/16/2010) due to mechanical <br />problems. <br />VLF Weekly Report WE 03.27.10.D.doc