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REV02548
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REV02548
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Entry Properties
Last modified
8/25/2016 1:00:11 AM
Creation date
11/21/2007 9:01:52 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1981039
IBM Index Class Name
Revision
Doc Date
4/10/1989
Doc Name
MID-TERM REVIEW BONDING DISCUSSION GRASSY GAP MINE C-81-039
From
MLRD
To
KORB & CARROLL
Type & Sequence
MT1
Media Type
D
Archive
No
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.F <br />.~~`' <br /> <br />i Z <br />- i?.:' . <br /> ^ <br /> r. <br />.. i' f <br />~~~~~ <br />~e <br />~ ~U <br />- 2 - oJx~ ~~' L <br />`, \L. <br />C` <br />-The reclaimed topography from Pits 5 and 6 will be compared with <br />pre-mining topography. Rockcastle will prepare a demonstration that <br />post-mining topography is the same as the pre-mining topography and that <br />it meets approximate original contours:~A status report on the <br />preliminary finding will be submitted to the Division within four weeks. <br />-Vegetation monitoring will be re-done this summer per page II. J-12 of <br />the permit application. Cover data by species SI have enclosed <br />vegetation guidelines which should be reviewed prior to sampling. This <br />data will be submitted to the Division and may be utilized for bond <br />release documentation. <br />-The Division will re-evaluate the bond by the middle of May. Mr. Korb <br />requested that the following issues be considered during the <br />re-evaluation: <br />°Use of 1 D 9 Dozer, 4 scrapers, 1 motor grader and 1 water truck <br />for the fleet; <br />°Consideration of Ryan's experience in the costing of equipment use <br />and the current Routt County maintenance worker wage for operator <br />cost; <br />°Modification of the rock dirt ratio used for both the topsoil <br />and overburden stockpiles at Pit 4; <br />°Use of bank cubic yards in the overburden stockpile calculation; <br />°Elimination of bond associated with structural demolition as the <br />shop could be given away due to its salvage value; <br />-Ms. Mowry will make a decision on utilization of these factors in <br />conjunction with her re-calculation of the bond, and provide a written <br />basis for her decisions to Rockcastle. <br />-Rockcastle will prepare a calculation for the bond associated with <br />implementation of the geortechnical study. This will include a <br />discussion of the source of material to be used for the buttresses. <br />Please call me if you have any questions or problems with these timeframes. <br />Sincerely, <br />Catherine W. Begej <br />Reclamation Specialist <br />CWB/yjb <br />Enclosure(s) <br />5069E <br />
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