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ameO <br />Earth & Environmental <br />Slope contouring was performed using various CAT dozers and various CAT excavators. <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 and a John Deere 850 excavator were used to excavate structural fill <br />material from the following areas: between stations F 1+00 (+/-) and F2+00 (+/-), <br />approximately 50 to 100 feet right of centerline; between stations H4+00 (+/-) and H6+50 <br />(+/-), approximately 40 to 125 feet right of centerline; and between stations K0+00 (+/-) and <br />K6+00 (+/-), approximately 100 feet left of centerline to 50 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 (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 A2+25 (+/-) and A3+75 <br />(+/-), approximately 50 to 100 feet left of centerline; between stations C0+00 (+/-) and C3+00 <br />(+/-), approximately 50 feet left of centerline to 50 feet right of centerline; between stations <br />F4+00 (+/-) and 1710+00 (+/-), approximately 0 to 50 feet right of centerline; and between <br />stations J28+00 (+/-) and J30+00 (+/-), approximately 0 to 75 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). <br />Blast pattern drilling was performed between stations H2+75 (+/-) and H7+00 (+/-), <br />approximately 100 to 175 feet left of centerline. Blasting was performed on Monday <br />(4/19/2010), Tuesday (4/20/2010), and Wednesday (4/21/2010). No blasting was performed <br />Thursday (4/22/2010), Friday (4/23/2010) and Saturday (4/24/2010). <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 04.24.10.13