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2014-01-28_REVISION - C1981010 (2)
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2014-01-28_REVISION - C1981010 (2)
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Entry Properties
Last modified
8/24/2016 5:39:21 PM
Creation date
1/28/2014 1:42:58 PM
Metadata
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Template:
DRMS Permit Index
Permit No
C1981010
IBM Index Class Name
Revision
Doc Date
1/28/2014
Doc Name
Response to Adequacy Review No. 1
From
Trapper Mining Inc
To
DRMS
Type & Sequence
PR7
Email Name
JLE
SB1
Media Type
D
Archive
No
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have received Phase I bond release. Give this; please explain this significant reduction in material <br />volume. <br />Trapper Response to Comment 33: As per the meeting on November 12, 2013, the issues regarding the <br />release of liability associated with the Phase Bond Release process as it relates to the PR7 permit revision <br />were addressed (see item # 27 response). <br />At the time that PR6 was submitted (2007), approximately 5.6 million cubic yards of material was estimated <br />to be hauled back from the Horse Gulch Fill (task # 25 in the Bond estimate) to assist with the backfill of K <br />pit by the truck/loader operation. After the PR6 submittal and the performance bond was estimated, a <br />number of changes were made that impacted the design, volumes, and methods of backfill in K pit. Less out <br />of pit spoil was allowed to be placed in the Horse Gulch Fill (25 million cyds vs. 35 million applied for). In <br />addition, Atapito & Associates changed their recommendation on the buttress fill on the north limits of K <br />pit by no longer requiring a buttress at all. This further reduced available dump room. Trapper then hauled <br />approximately 7 million cyds of material from K pit to F pit for final pit backfill there. This still resulted in <br />over 3 millio i cyds of material remaining that would have to be hauled somewhere else. To address this <br />issue, a plan was developed to allow the dragline operation to remove the M seam and Q seam interburdens <br />(that were previously planned to be removed by the truck/loader operation and taken to the Horse Gulch <br />Fill) and to place more material "in pit ". <br />Note: There is a discrepancy between the item #25 on the summary page ($7,872,034.99) of the RN -06 <br />Circes run and the item # 25 worksheet amount ($7,032,148.28). <br />34. Deal Pond is required to be reclaimed. Please update Table A -7.1 and Table A -7.2 to account for <br />the Deal Pond regrade costs. <br />Trapper Response to Comment 34: Deal pond was constructed after TR -94 was approved. This Technical <br />Revision, made 4pplication for the abandonment of a number of impoundments for the purposes of livestock <br />and wildlife use. Deal pond was intended to be considered for abandonment as well but was never requested <br />for this status through a Technical Revision. This resulted in it being inadvertently overlooked in PR6 and <br />was not carried forward into PR7. This oversight has been corrected and the reclamation volume and cost <br />for this impoundment has been included in tables A -7.1 and A -7.2 as requested. <br />35. The Division's copy of the revision is missing the Talpac results for stockpile A96 -IA. The <br />Division needs the road haul segment grade and length in order to complete the cost estimate. <br />Trapper Responst to Comment 35: The Talpac results for stockpile A96 -1A were inadvertently left out in <br />the original PR7 submittal. They are enclosed. <br />36. The demolition cost estimate provided in Appendix A, Table A -12.1 is missing the cost to demolish <br />the Carpenter Shop. Please update the estimate to account for this cost. <br />Trapper Response to Comment 36: The Carpenter's shop was demolished in the summer of 2012 and the <br />cost associated with this structure has already been absorbed by Trapper and was removed from the <br />Demolition section (Table A- 12.1). <br />37. Proposed Table A -13.6 provides a cost to seal the landslide monitoring stations. This table only <br />provides a cost for monitoring stations 7 and 8. Two additional stations are included in the <br />
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