PERMFILE72196

• Permit No: C1980001A
• IBM Index Class Name: Permit File
• Doc Date: 12/11/2001
• Section_Exhibit Name: 4.3 Topsoil Management
• Media Type: D
• Archive: Yes

• rehabilitation efforts to create a postmining environment that average
sheet erosion rates of five tons/acre/year or less.
Therefore, proactive erosion control was an integral part of the
mining process and remains an integral part of the reclamation process at
Edna Mine. Proactive erosion control includes a number of practices and
measures implemented to minimize erosion and create a stable land form.
These practices and measures include, but are not limited to, the
following:
1) Limiting disturbance to that which is operationally required for
mining and reclamation purposes;
2) Reclaiming disturbed areas as contemporaneously as is
operationally possible;
3) Careful postmining topographic planning which returns the surface
of disturbed areas to approximate original contours. This process
considers premining vs. postmining watershed size, distribution
and runoff characteristics;
• 9) Construction of concentrated flow drainage structures which have
been designed to safely pass the runoff from the storm event
specified by regulation. These structures are used to convey flow
from, to, around and through undisturbed, disturbed and reclaimed
areas;
5) The establishment of temporary and permanent vegetation on
disturbed and reclaimed areas;
6) Establishment of gradient terraces to control erosion on steeper
or excessively long slopes;
7) The use of contour furrowing, land imprinting or other surface
manipulations which encourage water harvesting, reduce soil
erosion or promote plant growth on disturbed and reclaimed areas;
and
8) Mulching with appropriate materials or using approved alternate
mulching methods at prescribed rates, or using other surface
• erosion control materials to protect the soil surface, reduce
Renewal-3 4.3-18 June 13, 1997