PERMFILE52521

• Permit No: C1981008A
• IBM Index Class Name: Permit File
• Doc Date: 12/11/2001
• Section_Exhibit Name: NH1 TAB 13 ATTACHMENT B SEDIMENTATION POND 001
• Media Type: D
• Archive: Yes

• If the water exceeds the effluent limitations requirements of the NPDES
permit, Peabody wi 11 retai n the water wi thi n the permi t area unti 1 i t
meets effluent limitations requirements by one or a combination of the
following techniques:
1. Pump the water to another sedimentation pond such as Pond No.
006.
2. Evaporation.
3. Utilize the water for dust control within the permit area.
4. Utilize the water for sprinkler irrigation on the reclamation
areas to increase the soil moisture.
5. Reduce the discharge rate and/or install dentention structures
such as silt fence or hay bales at the discharge location.
Whether the pond is bypassed or the water is moved away from the
construction area to other areas of the permit area, Peabody will
minimize erosion and comply with the applicable regulations.
• Embankment reconstruction will be conducted in compliance with CMLRD
regulations. The existing embankment will be cleared of all organic
matter prior to the placement of new fill material. The placing and
spreading of fill material will proceed from the lowest point on the
embankment in horizontal layers of such thickness as to allow for a
minimum compaction of 93 percent of the standard proctor. Fill material
will be free of sod, large roots, vegetation matter, coal or coal
processing waste, and frozen material. Both the upstream and downstream
slopes of the embankment will be 3h:ly or flatter. The completed
embankment and surrounding disturbed areas will be seeded and
revegetated to prevent erosion.
SELECTED REFERENCES
Barfield, B.J., Warner, R.C., and Haan, C.T. 1983. Applied Hydrology
and Sedimentology for Disturbed Areas. Oklahoma Technical Press,
Stillwater, Oklahoma.
1985. Communication with Colorado and Arizona SCS Hydrologist (8-5-85).
CJ
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