INSPEC43163

• Permit No: C1980007
• IBM Index Class Name: Inspection
• Doc Date: 4/29/1994
• Doc Name: COAL INSPECTION REPORT
• Inspection Date: 4/26/1994
• Media Type: D
• Archive: No

III. COMMENTS -COMPLIANCE
Below are comments on the inspection. The comments include discussion of observations made
during the inspection. Comments also describe any enforcement actions taken during the
inspection and the facts or evidence supporting the enforcement action.
road. These areas should be filled in and regraded to reclaim the
road to approximate original contour. MCC has not yet determined
if this road will be used for the location of the proposed fan.
HYDROLOGIC BALANCE
The first quarter 1994 pond inspection noted MB-3's sediment level
at 60 percent. MCC stated that with the current weather pattern,
Cain and snow, they are not sure when the pond will be cleaned. I
recommended that the pond be cleaned as soon conditions permit.
MCC is planning to clean-up the rockfall that was noted during last
month's inspection, which most likely crushed the outlet for MB-1
and C5-1. The work will take place in the next few days. The
south end of MB-1 is being cleaned of sediment in preparation of
lining the pond. Sediment cleaned from the pond is being deposited
on the refuse pile to dry out. MCC will mix course reject material
from the screening plant with the sediment from the pond before
compaction. The berm in MB-1 has been completed and the subsoil
for this activity which was stockpiled on the outslopes of MB-1 has
been removed. The slopes need to be graded and seeded. The
construction of the principal spillway extension from the south
cell of MB-1 has begun. The Division suggested that this extension
be completed as soon as possible. There should be no out-flow
through the emergenc}• spillway during the passage of runoff
resulting from the 10-year 24-hour precipitation event. I
recommended that the delta in the south cell of MB-1 be cleaned to
allow for more water storage. Riprap removed from the inside of
MB-1 will be used to armor the outslopes of the access road over
the FW-1 emergency spillway. This should be done as soon as
possible. WET testing is currently being performed on MB-2R, as
drainage which goes to MB-1 (including mine water) is being routed
to MB-2R. This is being done temporarily to prepare for lining of
MB-1. Portions of Map 54, Sediment and Drainage Control, was
reviewed in the field to ascertain which culverts and ditches were
present on the ground and which ones were not. MCC is planning to
submit a revision to update Map 54 with structures currently on the
ground. The inlet to MB-2R, C2R-L, has been relocated to its
original designed elevation. This area has been regraded and
built-up to allow C2R-1 to be placed in its designed location. Now
that MB-2R is constructed as designed, MCC should present an as-
built certification and drawings for this pond. MCC should also
consider contacting the State Engineer to perform a dam safety
review, to comply with stipulation 51 from technical revision 65.
It appears that MB-9 has been cleaned. Culvert C3-3 requires
cleaning. It appears the grade on this culvert is not great enough
to keep the water and sediment moving through the culvert. The
size of the berm around the belt transfer point, near the silos has