HYDRO21601

• Permit No: C1980005
• IBM Index Class Name: Hydrology
• Doc Date: 1/12/1995
• Doc Name: 4th Qtr 1995 Inspections
• From: PEABODY WESTERN
• To: DMG
• Permit Index Doc Type: SEDIMENT POND INSPECTIONS
• Media Type: D
• Archive: No

PERIODIC INSPECTION FORM
Water, Sedlment, or Slurry Impoundments
INSPECTOR`S NAME: Dennis Jones DATE: 12/09/94
NPDES I.D. NO.: CO-0000221 D. P. 003
FACILITY CONFIGURATION: Diked Pond DATE LAST INSPECTION: 09/22/94
SITE NAME: Northwest Impoundment #003 LOCATION: SES: SWS:. Sec. 27. T6N. R87W
MINE NAME: Seneca II Mine (Seneca Coal Co) LOCATION: 7.1 mi. SE of Hayden. CO
MINE I-D. NO.: CMLRD Permit No. C-80-005 OWNER'S REP.: Scott Williams. Gen Mar
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: 2:1 upstream, ~ 3:1 downstream
*Seepage (specify location, color, and approximate volume)
From underdrain pipes:
es No
12 in
es No
_ Yes No
Total = 5:1
Yes No
Yes o
Yes No
Yes No
Yes o
Yes o
Yes o
Yes o
Yes N
Yes
Yes o
Yes
Yes N®
4.8 feet
_ feet
Yes
Yes No
N/A
N/A
N/A
N/
N/A
N /A
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:
*Maj or erosion problems:
Surface movements in valley bottom or on hillside:
*Erosion of toe:
*Water impounded against toe:
Existing embankment freeboard:
Increase Decrease in water level: No chance
Cracks, bulging, or erosion on upstream face:
Visible sumps or sinkholes in slurry surface:
*Clogginq
Spillway channels and pipes:
Decant system:
Diversion ditches:
*Crackinq or crushing of pipes
Spillway pipes:
Decant system:
Trash racks clear and in place:
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N~
N
Yes ® N/A
Yes No
Yes ~ A
Yes No N A
Yes No N/
es No N/A
*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 space on
the back of this sheet.