HYDRO29602

• Permit No: C1982057
• IBM Index Class Name: Hydrology
• Doc Date: 10/20/1997
• Doc Name: QUARTERLY SEDIMENTATION POND INSPECTIONS SENECA II-W MINE
• 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: Michael Altav;_tta DATE: 0928 ~7
NPDES I.D. NO.: CO-0000 t D.P. 004
FACILITY CONFIGURATION: Cross-Vattgy Pond DATE LAST INSPECTION: 06~27~97
SITE NAME: Pond 1009 LOCATION: ~'~ cWk. Sec. tt 'PSN R88W
MINE NAME: Reneca it-W M;n (Reneca Co-7 0l LOCATION: A ms. S of Hayden, CO
MINE I.D. NO.: CMLRn p m+r No -8 -057 OWNER'S REP.: Brad Brown, Gen Mgr
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Foundation preparation (removal of vegetation, stumps, topsoil: ~ No
Lift thickness: 1Z in
Compaction according to approved plan: ee No
Burning (specify extent and location): Yes No
Angle of slope: 3e1 upstream, 3:1 downstream Total = 6:1
*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: Approximately
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:
Yee No
Yee
Yes o
Yee o
Yes o
Yes o
Yes
Yea
Yes o
Yes
Yea o
Yee o
Yee No
6.9 feet
feet
Yes Q
Yes 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
N~A
Yea ~ N A
Yee No
Yee No N
Yee No NLA
Yes No `+Y~F`~\
No N~A
*Major adverse changes in these items could cauee 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.