2010-10-21_HYDROLOGY - C2009087

• Permit No: C2009087
• IBM Index Class Name: HYDROLOGY
• Doc Date: 10/21/2010
• Doc Name: 3rd Quarter 2010 Pond Inspection Report
• From: Peabody Colorado Operations, LLC
• To: DRMS
• Permit Index Doc Type: Sediment Pond Inspect
• Email Name: JDM
• Media Type: D
• Archive: No

PERIODIC INSPECTION FORM
Water, Sediment, or Slurry Impoundments
INSPECTOR'S NAME: Dennis Jones DATE: 0
NPDES I.D. NO.: CO-0048275 D.P. 004
FACILITY CONFIGURATION: Cross-Valley Pond DATE LAST INSPECTION: 6 ??6 'ICJ
SITE NAME: South Section 12 Pond #004 LOCATION: SWV44 SEl/,, Sec. 12, TSN, R87W
MINE NAME: Peabody Sage Creek Mine LOCATION: 7.1 mi. SE of Hayden, CO
MINE I.D. NO.: CDRMS Permit No. C-2009-087 OWNER'S REP.: Mike Ludlow
Circle or write in appropriate response
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Foundation preparation (removal of vegetation, stumps, topsoil:
Lift thickness:
Compaction according to approved plan:
Burning (specify extent and location):
Angle of slope: 5:1 upstream, 2:1 downstream
*Seepage (specify location, color, and approximate volume)
From underdrain pipes:
At isolated points on embankment slopes:
At natural hillside:
Over widespread areas:
From downstream foundation area:
"Boils" beneath stream or ponded water:
Cracks or scarps on crest:
Cracks or scarps on slope:
Sloughing or bulging on slope:
*Major erosion problems:
Surface movements in valley bottom or on hillside:
*Erosion of toe:
*Water impounded against toe:
Existing embankment freeboard: (normal = 4.8')
Increase Decrease in water level: 1/W C--
Cracks, bulging, or erosion on upstream face:
Visible sumps or sinkholes in slurry surface:
*Clogging
Spillway channels and pipes:
Decant system: Inoperable
Diversion ditches:
*Cracking or crushing of pipes
Spillway pipes:
Decant system: Inoperable
20. Trash racks clear and in place:
21. Discharge rate (gpm)
*Major adverse changes in these items could cause instability and
Engineering Manager and Mine Superintendent for further evaluation.
these items should normally be described (extent, location, volume
back of this sheet. ff``
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should be reported to the
Adverse conditions noted in
etc.) in the space on the
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