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2010-05-06_REPORT - M1980244
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2010-05-06_REPORT - M1980244
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Entry Properties
Last modified
6/15/2021 5:52:25 PM
Creation date
5/7/2010 7:16:35 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
M1980244
IBM Index Class Name
REPORT
Doc Date
5/6/2010
Doc Name
Weekly Construction Quality Assurance ("CQA") Reports: 04/04/2010, 04/11/2010 and 04/18/2010.
From
CC&V
To
DRMS
Type & Sequence
AM9
Email Name
BMK
Media Type
D
Archive
No
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ameO <br />Earth & Environmental <br />Location This Week <br />(tons) Cumulative <br />(tons) Comments <br />E Cresson Clay Processing 4,355 63,741 <br />S Cresson Clay Processing 0 201,199 Processing in area complete. <br />Squaw Gulch Processing 0 35,816 Processing in area complete. <br />Total 4,355 294,145 <br />2) Low Volume Solution Collection Fill Material (LVSCF) <br />Processing of Low Volume Solution Collection Fill material continued at the Dump 4 LVSCF <br />Process. A CAT D-10 dozer and a skid steer loader were used to process the material. <br />Location This Week Cumulative Comments <br /> (tons) (tons) <br />Dump 4 LVSCF Processing 17,729 265,653 <br />G) Miscellaneous <br />No work was performed during the week. <br />III) Underground Workings <br />A) Drilling/Excavation <br />No work was performed during the week. <br />B) Mine Shaft/Stope Remediation <br />Remediation of Underground Working #3009/#3010 was completed with the placement of a three- <br />layer geogrid cap extending 50 feet from each working location. Prior to placement, the subgrade <br />surface was inspected and accepted by an AMEC field representative. Approximately 19,616 <br />square feet of geogrid was placed and accepted by an AMEC field representative prior to select <br />structural fill placement. Approximately 470 cubic yards of select structural fill was then placed <br />over the geogrid in one 6-inch compacted lifts (over first and second layer) and one 1-foot <br />compacted lift (over third layer). Prior to compaction the select structural fill material was <br />moisture conditioned using a CAT 773 water-truck. Compaction of the select structural fill was <br />then performed using a 10-ton smooth drum compactor using the static method. Five nuclear <br />density tests were performed with results passing. Moisture-density relations were performed in <br />accordance with ASTM D698-07. <br />Remediation of Underground Working #3012 continued backfilling the working with structural <br />fill. Structural fill was placed in the working using a CAT 345 excavator and the excavator bucket <br />was used for compaction until the area was safe to use a 10-ton vibratory smooth drum compactor <br />passing over the entire surface at least four times. The material was moisture conditioned (when <br />necessary) using a CAT 773 water-truck. When the area was safe, the CAT 345 excavator cleaned <br />previously placed temporary fill from the remaining portion to the northwest. This section of the <br />working was inspected by AMEC representatives and the entire working was found to be <br />competent rock. John Lupo (AMEC Certifying Engineer) made the decision that concrete was not <br />necessary in this portion of the working. This portion of the working was then backfilled with <br />VLF Weekly Report WE 04.10.10.13
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