HYDRO20882

• Permit No: C1980005
• IBM Index Class Name: Hydrology
• Doc Date: 1/30/1998
• Doc Name: 4th Qtr 1998 Inspections\
• From: SENECA COAL CO
• 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 ones DATE: 12~04~97
NPDES I.D. NO.: CO-0000 221 D.P. 008
FACILITY CONFIGURATION: C +-o a~-Va17Qy Pond DATE LAST INSPECTION: 0925/97
SITE NAME: Pond #008 LOCATION: SW's NW'd Sec. "ja TSN A86W
MINE NAME: s n-_a TT M'n (seneca Coal Col LOCATION: 7.1 mi. SE of Hayden CO
MINE I.D. NO.: C r.Rn P m ; No. -80-005 OWNER'S REP.: Brad Brown, OPn Mgt
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Foundation preparation (removal of vegetation, stumps, topsoil: es No
Lift thickness: 1Z in.
Compaction according to approved plan: ~ No
Burning (specify extent and location): Yea No
Angle of slope: 3:1 upstream, 3:1 downstream Total = 6:l
*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 treat:
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: see comments
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 ey et em:
Trash racks clear and in place:
Yes No
Yes
Yes
Yea o
Ye9
Yee
Yea o
Yes o
Ye9
Yes o
Yea No
Yes o
Yes o
e.0 feet
feet
Yea
Yea No
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
N~A
N~A
N~A
N~A
Yes ~ N A
Ye9 O
Yee No
Yee N® N/~
Yee
yes N0 mil'
No
Ye No N~A
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*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.