APPCOR13165

• Permit No: C1992080
• IBM Index Class Name: Application Correspondence
• Doc Date: 3/18/1993
• Doc Name: CARBON JUNCTION MINE ADEQUACY RESPONSES FINE NO C-92-080
• From: DARRY A FERGUSON
• To: DMG
• Media Type: D
• Archive: No

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provided in the new channel designs included
in Appendix 5-2.
P.3 No.6 The verification that the emergency spillway
in Sediment Pond No. 2 will safely pass the 25
year event has been included in Appendix 5-2.
The one foot freeboard will be examined after
snowmelt. If the one foot is not a part of
the as-built design, the spillway will be
reconstructed this summer to have a one foot
freeboard.
P.3 No.7 Due to the independent nature of the sediment
control system for the gravel operations, no
new design will be necessary for Sediment Pond
No. 1. The spillway will handle the 25 year
event. The need for one foot of freeboard
will be examined after snowmelt this spring.
If the one foot freeboard does not exist, the
pond will be redesigned this summer to have
the necessary one foot freeboard.
P.3 No.B The sediment control map, Map 5-1, has been
revised to show the drainage.
• P.4 No.9
VEGETATIO',
AND 8OIL8
P.4 No.i
•
The berm around Topsoil Pile No. 2 will be
connected to the nearby collection ditch to be
collected in the sediment pond.
The seed mix has been redefined as per the
recommendation of DMG and has been enclosed in
Table 5-6.
P.4 No.2 Success standards for vegetative growth has
been inserted into the text. The methodology
for collection of data and the statistical
comparison to be utilized to prove the success
has been set forth in the text.
P.5 No.l The geochemistry requirements of the
regulations specifically require "Physical
properties of each stratum within the
overburden and interburden" to be tested for a
number of parameters. The testing of samples
on an interval greater than the "strata" basis
is unreasonably expensive and without merit.
See Section 2.04.6(2)(b)(i)(C) of the rules
and regulations.