_ENFORCEMENT - C1981017 ‎(17)‎

• Permit No: C1981017
• IBM Index Class Name: Enforcement
• Doc Name: Bid Documents ‎(IMP)‎ CV-90-052
• Violation No.: C-90-052
• Media Type: D
• Archive: No

We therefore believe the best alternative is to construct a berm
across the lowest end (southwest side) of the bench area, from the
edge of the bench to the hillside. This would contain run-off from
the bench. The slope of the bench area directs flows into the
hillside, so we do not believe it is necessary to extend the berm
around the entire perimeter of the bench in order to allow for
containment of all run-off.
The berm would be 3' high, and cross the road where it reaches the
bench area. There is virtually no traffic to this area, so this
should present no problem to maintenance of the berm.
Southwest end of 13 Mine pad.
This area is flat, measures .12 acre in size. Approximately 50% of
the area is covered by cement slabs. There are concrete walls
still standing at two locations on the perimeter of the area.
Routing flows to sediment ponds is infeasible at this location, as
the existing sediment ponds are upslope, and the steep hillside of
the surrounding terrain makes it infeasible to construct a pond or
catchment basin.
For that reason, Mid-Continent proposes to construct a 3 ' high berm
around the perimeter of the area to contain runoff. The berm would
start from one of the concrete walls, and continue on either side
of the other, essentially including them as part of the sediment
control system.
016 Pond Topsoil Stockpile
This stockpile measures . 11 acre in size, and is very well
vegetated. It sits on the west side of Pond C of the 016 pond
series, and borders the road around the lower side of the pond.
Below the westerly two-thirds of the pile is an undisturbed area
which is well vegetated, and there is a natural berm consisting of
river rock and a substantial concentration of drift wood around the
toe. To the north is the stream buffer zone which separates the
ponds from Dutch Creek.
We do not believe that there is any contribution of sediment to
Dutch Creek as a result of the good vegetative cover, and
construction of berms or catchment basins below, or downslope, of
this pile would be an unnecessary and counterproductive
disturbance.
The upslope portion of the pile borders the embankment of Pond C.
This is a flat area and we have concluded that installation of 3'
berms which would extend from the pile, on either side, to the
pond, would direct any potential runoff from this side of the pile
to Pond C.
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