INSPEC01513

• Permit No: C1981047
• IBM Index Class Name: Inspection
• Doc Date: 7/2/1979
• Doc Name: OSM Inspection
• From: OSM
• To: MLR
• Inspection Date: 6/20/1979
• Media Type: D
• Archive: No

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717.12 SiPns 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 the mine•
life. 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. In no circumstance should any spoil
material be pushed off the bench onto the downslope of the bench or
the roads [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 Hubbard Creek. It is far enough from the Creek so as
not to pose a threat to the stream. Presently, only small amounts
of spoil are temporarily stockpiled here until the material is dis-
posed of in the mine. If permanent stockpiles are to be constructed
in this area they must comply with all the criteria of 717.15 and
715.15.
717.17 Protection of the Hydrologic System
Hubbard Creek flowing 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 sediment pond
is within the buffer zone for Hubbard Creek but the state has approved
it. Ground water from the alluvium of Hubbard Creek partially fills
sediment pond. No runoff from disturbed areas presently enters the
pond because the final stretch of ditch above the pond is incomplete.
The pond is so large that it will normally not discharge. A larger
dam and spillway are being constructed. Topsoil piled in the pond
area should be moved to the topsoil stockpile on the turnout_of the
haul road.
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 riot have the required
slope but the construction was judged to be adequate because of
the small drainage area (the pond was dry) above the pond. Extending
the sediment pond would require tearing up a stand of willows on
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