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REV96240
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REV96240
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Entry Properties
Last modified
8/25/2016 3:20:59 AM
Creation date
11/21/2007 11:57:21 PM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1981047
IBM Index Class Name
Revision
Doc Date
8/9/1984
Doc Name
BLUE RIBBON COAL CO BLUE RIBBON MINE SITE TECHNICAL REVISION PN C-047-81
From
BLUE RIBBON COAL CO
To
MLR
Type & Sequence
PR1
Media Type
D
Archive
No
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Area 4 drainage will be the same as shown in the permit application <br />• until it reaches Pond lll, where iC will be culverted into Pond If 1. A <br />10" C[•L° with a slope of 2% and an n of 0.014 will carry 2.9 CFS, more <br />than enough to handle the peak flow from area 4 of 1.75 CFS (page 6 of <br />10, Appendix C), and the south end of the bench drain, up to 8.92 CFS. <br />Another 10" CMP will be installed near the north end on the bench <br />toe to carry mine water (0.25 CFS) and areas 2, 5, and 7 water (1.27 CFS, <br />page 4 of 10, Appendix C). <br />• <br />• -5- <br />
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