HYDRO24511

• Permit No: C1980005
• IBM Index Class Name: Hydrology
• Doc Date: 10/20/1998
• Doc Name: 3rd 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: Mi ha l Al avilla DATE: - 09/18/98
NPDES I.D. NO.: co-0000221 n.P. 008
FACILITY CONFIGURATION: Cross-Valley Pond DATE LAST INSPECTION: 06/.29/98
SITE NAME: Pond IOOB LOCATION: stall NWl. c~c• 7 TSN R86W
MINE NAME: Seneca II Mane (can a oa of LOCATION: 7.l mi_ SE of Hayden~~_
MINE I.D. NO.: cr.~r.un p rm; xo. --80-005 OWNER'S REP.: Brad Brown, C-en N9~
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Foundation preparation (removal of vegetation, stumps, topsoil: es No
Lift thickness: 1Z in
Compaction according to approved plan: ee No
Burning (specify extent and Location): Yes No
Angle of elope: __3:1 upstream, 3:1 downstream Total = 6:1
*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 elope:
*Major erosion problems:
Surface movements in valley bottom or on hillside:
*Eroeion of toe:
*Water impounded against toe:
Existing embankment freeboard: see comments
IRCrea6e Decrease In Water level: No Change
Cracks, bulging, or erosion on upstream face:
Vie ib le sumps or sinkholes in slurry surface:
*Clogging
Spillway channels and pipes:
Decant system:
Diversion ditches:
*Cracking or crushing of pipes
Spillway pipes:
Decant eyetem:
Trash racks clear and in place:
Yee No
Yes do
Yee
Yee
Yee o
Yea o
Yee No
Yes No
Yee o
Yes No
Yes o
Yee
Yee o
7.s feet
_ feet
Yee No
Yes No
N/A
N/A
N/A
N/A
`f1lJ
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 ©o N/A
Yes No
Yee No
Yea
Yea No A
ea 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 apace on
the back of this sheet.