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REV07657
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REV07657
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Entry Properties
Last modified
8/25/2016 1:08:27 AM
Creation date
11/21/2007 9:45:24 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1981022
IBM Index Class Name
Revision
Doc Date
3/8/1991
Doc Name
STATUS OF ADEQUACY ISSUES PR-01 SOMERSET MINING CO SOMERSET MINE PN C-81-022
From
MLRD
To
J E STOVER & ASSOCIATES
Type & Sequence
PR1
Media Type
D
Archive
No
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'~ James E. Stover - 2 - March 8, T99T <br />5. This question addressed haul road construction and drainage <br />concerns. Most of the specific concerns were addressed by the <br />March 5, 1991 adequacy response. Three specific and minor concerns <br />that remain to be answered are as follows: <br />a. Specify the slope on the 12" culvert. We feel it should be at <br />least 1.5%. <br />b. Specify that riprap will be properly graded and durable rock, <br />with a filter blanket. <br />c. Supply a monitoring plan which will clearly demonstrate <br />compliance with 4.05.2(31, for the Small Area Exemptions A and C. <br />Please be advised that no mine dewatering can occur until we have <br />proof that a properly updated NP DES permit has been obtained. <br />6.-7. Adequate <br />8. With SC-1 and SC-2 included in the monitoring plan on page 2.05-45i, <br />this answer is adequate. <br />9. SMC has committed to a study of the possibilities of inflow from <br />faults and fractures in the Coal Gulch area. We would further like a <br />definite date that this study would be completed. This date should <br />occur approximately one year before undermining the area, to allow <br />for proper planning if necessary. <br />10.-39. Adequate <br />40. We believe the estimated reclamation cost is far too low. Our <br />estimate, which includes 9 separate tasks plus indirect costs <br />(overhead and profit, bid specifications/engineering and project <br />managementl, came to $104,000.00. Many of the direct reclamation <br />costs are based on actual costs incurred at the Hawk's Nest Mine in <br />1990 and 1991. Please contact me if you would like to discuss <br />further details and assumptions used to figure these costs. <br />41.-44. Adequate <br />
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