INSPEC17372

• Permit No: C1981047
• IBM Index Class Name: Inspection
• Doc Date: 9/14/1979
• Doc Name: OSM INspection
• From: OSM
• To: MLR
• Inspection Date: 6/20/1979
• Media Type: D
• Archive: No

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717.12 Signs and Markers
The mine permit and identification sign were in place.
717.14 Backfilling and Grading
The bench area for the mine portals has recently been completed and
no backfilling will be necessary until the completion of mining.
All rock or spoil from the mine is either disposed of in the mine or
temporarily deposited in a refuse pile at the entrance to the mine
area. This material will be hauled back and disposed of in the mine
when space is available. The operator was advised that in no circum-
stance should arty spoil material be pushed off the bench onto the
downslope of the bench or the roads as described in 717.14(a)(1).
717.15 Disposal of Excess Rock
The spoil pile is on a flat area in the valley bottom adjacent to
the road and Hubbarad Creek. It is far enough from the Creek so as
not to pose a threat to the stream. Presently, only small amounts
of spoil or waste material are temporarily stockpiled here until the
material is disposed of in the mine. The operator was advised that
if permanent stockpiles are to be constructed in this area they must
comply with all the criteria of 717.14 and 717.15 and be part of the
approved mining plan.
717.17 Protection of the F(ydrologic System
Hubbard Creek, which flows through the permit area, is considered a
good cold water trout stream. The operator is presently completing
a system of ditches, berms, and sediment ponds to protect the stream
from water pollution. Ditches carry runoff from all disturbed areas
of the portal and the mine road to a large sediment pond in the valley
bottom. The ditches are presently being lined with rocks. Some areas
of the ditch are still under construction. The State has approved the
sediment pond that is within the buffer zone for Hubbard Creek. Ground
water from the alluvium of Hubbard Creek partial]y fills the sediment _
pond. No runoff from disturbed areas presently enters the pond because
the final stretch of ditch above the pond is incomplete. According to
the operator, the pond is so large that it should normally not discharge.
A larger dam and spillway are being constructed. The operator raised the
question using this topsoil for enlargement of the dam or of storing this
topsoil underwater in the sediment pond. The operator was advised that
topsoil stripped from the sediment pond construction area along with all
other topsoil, should be stockpiled in an area approved in the mining
plan.
The coal stockpile and the refuse pile have ditches to divert water
from undisturbed areas around them. A small sediment pond adjacent
to the riparian vegetation on Hubbard Creek retains runoff from the
stockpile area. The sediment pond dam does not have the required
slope but the construction was judged to be adequate because of the
small drainage area above the pond (the pond was dry). Extending
the sediment pond would require tearing up a stand of willows on
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