HYDRO25950

• Permit No: C1980005
• IBM Index Class Name: Hydrology
• Doc Date: 10/4/1993
• Doc Name: 3rd Qtr 1993 Inspections
• From: PEABODY WESTERN
• To: DMG
• Permit Index Doc Type: SEDIMENT POND INSPECTIONS
• Media Type: D
• Archive: No

PERIODIC INSPECTION FORM
Water, Sediment, Or Slurry Impoundments
INSPECTOR'S NAME: Tom Wainwright DATE: 09/21/93
NPDES I.D. NO.: CO-0000221 D.P. 002
FACILITY CONFIGURATION: Incised Pond DATE LAST INSPECTION; 06/10/93
SITE NAME: Wedge Impoundment 1002 LOCATION: NW1t NE7~, Sec. 34, T6N, R87W
MINE NAME: Seneca Mine (Peabody Coal Co.) LOCATION: 7.1 mi. SE of Hayden, CO
MINE I.D. NO.: CMLRD Permit No. C-005-80 OWNER'S REP.: Scott Williams. Supt.
Circle Or Write in BpDrODriate re SC nSa
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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 elope: upstream, downstream
*Seepage (specify location, color, and approximate volume)
From underdrain pipes:
At isolated points on embankment elopes:
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 elope:
Sloughing or bulging on elope:
*Major erosion problems:
Surface movements in valley bottom or on hillside:
*Eroeion of toe:
*Water impounded against toe:
Existing embankment freeboard:
Increase X Decrease in water level: _
Cracks, bulging, or erosion on upstream face:
Visible sumps or sinkholes in slurry surface: _
*Clogging
Spillway channels and pipes:
Decant system:
Diversion ditches:
*Cracking or crushing of pipes
Yee No
Yes No
Yee N A
Yee N A
Yes No
Yes No N A
Yes No
Yee No
Yee No
Yee ® N/A
Yee ~ N/A
Yes No
Yee No
N/A feet
_ feet
Yee No
Yee No
Yee ® N A
Yes No
Yee ~ N/A
Spillway pipes: Yes No
Decant system: Yee No
20. Trash racks clear and in place: ~ No N/A
Yes No
in.
_
Yee No
_ Yes No
Total =
*Major adverse changes in these items could cause instability and should be reported to the
Engineering Manager and Mine Superintendent for further evaluation. Adverse conditions noted
in these items should normally be described (extent, location, volume, etc.) in the apace on
the back of this sheet.