PERMFILE123757

• Permit No: C1981008A
• IBM Index Class Name: Permit File
• Doc Date: 12/11/2001
• Section_Exhibit Name: NH1 TAB 13 ATTACHMENT D SEDIMENTATION POND 004
• Media Type: D
• Archive: Yes

REMEDIAL COMPLIANCE PLAN
The present storage capacity and spillway configuration of Sediment Pond
No. 004 are inadequate. As a result of this, Peabody proposes the
following remedial actions be taken pending CMLRD approval:
1. Excavate the ponding area to provide the storage capacity
shown in Table 6.
2. Construction of the principal and emergency spillways as shown
on Exhibit 13-14.
3. Modify the embankment to provide for 3h:ly slopes on both the
upstream and downstream.
All material excavated from the ponding area and adjacent areas as a
result of the abdve remedial action, will be placed in one of the
following locations as determined by Peabody's field engineer during
constructi on:
i. The material will be tested for suitability as a plant growth
medium, and, if suitable, be placed in an appropriate topsoil
• stockpile or direct hauled and used in a reclamation area.
2. If the engineer determines the material to be suitable for
embankment material, the material will be placed and compacted
within the 3:1 slopes of the embankment.
3. If the material is excessive or not suitable for use within
the 3:1 slopes of the embankment, the material will be placed
outside the plane of the 3:1 slopes on the downstream side of
the embankment, graded into the surrounding topography, and
reclaimed in accordance with Peabody's reclamation plan. This
excessive material will increase the stability of the
embankment by increasing the overall width, flattening the
downstream slopes, and/or reducing the downstream embankment
height. In addition, this material is in close proximity of
the ponding area when final reclamation of the pond is
required. Based on the field conditions encountered at the
time of construction, the field engineer is allowed enough
• flexibility to dispose of the material in an acceptable
manner.
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