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2011-11-19_REPORT - M1980244 (3)
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2011-11-19_REPORT - M1980244 (3)
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Last modified
8/24/2016 4:45:10 PM
Creation date
2/26/2014 3:01:13 PM
Metadata
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Template:
DRMS Permit Index
Permit No
M1980244
IBM Index Class Name
Report
Doc Date
11/19/2011
Doc Name
FINAL REPORT, VOLUME 2 OF 3 ‎(continued)‎ 2011 phase 5 valley leach facility ore storage 2 OF 3
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DRMS
Media Type
D
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ameO <br />Earth 8 L— r— mental <br />using a CAT D -10 dozer and a CAT D -9 dozer. Material generated as the cut progressed was <br />pushed down the slope. <br />E) 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 />F) 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 E 14 +00 ( + / -) and E 18 +00 ( + / -), <br />approximately 50 to 100 feet right of centerline; between stations H9 +00 ( + / -) and H13 +00 <br />( + / -), approximately 0 to 50 feet right of centerline; and between stations H24 +00 ( + / -) and <br />H26 +00 ( + / -), approximately 250 to 300 feet left of centerline. The structural fill material was <br />loaded into CAT 777 haul trucks. <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 37 °F to 41 T. On average, fill preparations were performed for one to one <br />and a half hours before fill temperatures were within project specification. <br />Structural fill was placed between stations B0 +50 ( + / -) and B7 +00 ( + / -), approximately 50 feet <br />left of centerline to 50 feet right of centerline and between stations C0 +00 ( + / -) and C5 +00 <br />( + / -), approximately 50 feet left of centerline to 50 feet right of centerline. Structural fill was <br />placed in 18" to 24" lifts using various CAT dozers. Each lift was moisture conditioned using a <br />CAT 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 E8 +00 ( + / -) and E14 +00 ( + / -), <br />approximately 30 feet left of centerline to 50 feet right of centerline. Blasting was performed in <br />these areas Thursday (1/14/2010) and Friday (1/15/2010). <br />G) Material Processing <br />1) South Cresson Clay Processing Area <br />Processing of Soil Liner Fill material continued at the South Cresson Clay Process. A CAT D -8 <br />dozer, a CAT 320 excavator, and a CAT 966 front -end loader were used to process the material. <br />Location <br />Week <br />tons <br />emulative <br />Comments <br />So Cresson Clay Processing <br />8,516 <br />173,277 <br />Squaw Gulch Processing <br />0 <br />35,816 <br />Processing in area complete. <br />Total <br />8,516 <br />205,186 <br />VLF Weekly Report WE 01.16.10.D.doc <br />
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