HYDRO22713

• Permit No: C1980005
• IBM Index Class Name: Hydrology
• Doc Date: 1/10/1994
• Doc Name: 4th 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: Dennis Jones DATE: 12/20/93
NPDES I.D. NO.: CO-0000221 D.P. 003
FACILITY CONFIGURATION: Diked Pond DATE LAST INSPECTION: 9/21/93
SITE NAME: Northwest Impoundment $003 LOCATION: SEk SW's, Sec. 27, T6N, R87W
MINE NAME: Seneca Mine (Peabody Coal Col LOCATION: 7.1 mi. SE of Hayden, CO
MINE I.D. NO.: CMLRD Permit No. C-005-80 OWNER'S REP.: Scott Williams, Supt.
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2
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7.
8.
9.
10
it
12
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18
19
20
Circle or write in appropriate response
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:
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 elope:
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:
Increase Decrease in water level: No change
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
Spillway pipes:
Decant system:
Trash racks clear and in place:
,yes No
12 in.
_ `Y_es No
_ Yes L-
Total = S:1
Yes No
Yes CNQ~
Yes ~No
Yes ~No:
Yeses
Yes ;Plq.
Yes ~ 7~0
Yes LNG
Yes d~
Yes ~No,'
Yes Lo
Yes `)'7Oi
Yes ~lCy
4.8 feet
feet
Yee poi
Yes No
N/A
N/A
N/A
N/A
N/A
~N/A.
NTA
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N A
Yes ~No~ N/A
Yes No M/8,
Yes `o~ N/A
Yes ~No N/A
Yes No ~N/A,
`Yes. 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.