HYDRO22881

• Permit No: C1982057
• IBM Index Class Name: Hydrology
• Doc Date: 10/5/2007
• Doc Name: 3rd Quarter 2007 Sedimentation Inspection Report
• From: Seneca Coal Company
• To: DRMS
• Permit Index Doc Type: Sediment Pond Inspections
• Media Type: D
• Archive: No

PERIODIC INSPECTION FORM
Water, Sediment, or Slurry I
mpoundments
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INSPECTOR S NAME: Dennis Jones DATE: `
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ON DATE LAST INSPECTI ON: 1
SITE NAME: Pond #016 LOCATION: NE'/. SEA/, Sec. 27 TSN R88W
MINE NAME: Seneca II-W Mine (Seneca Coal Co ) LOCATION: 8 mi. S of Hayden CO
MINE I.D. NO.: CMLRD Permit No. C-82-057 OWNER'S REP.: Greg g Kitchen, Gen Mar
Circle Or WYlte in app rpprlate reSpOn62
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Foundation preparation (removal of vegetation, stumps, topsoil: Yes
Lift thickness: in.
Compaction according to approved plan: Yes
Burning (specify extent and location): ivo
Angle of slope: 3:1 upstream, 3:1 downstream Total = 61
*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: mV
"Boils" beneath stream or ponded water:
Cracks or scarps on crest:
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: normal = 6.8'
Increase Decrease in water level; k o c ci~q Q
Cracks, bulging, or erosion on upstream face:
Visible sumps or sinkholes in slurry su rface:
*Clogging
Spillway channels and pipes:
Decant system:
Diversion ditches:
*Cracking or crushing of pipes
Spillway pipes:
Decant system:
Trash racks clear and in place:
Discharge rate (gpm)
N A
Yes No N/A
e No N/A
es o N/A
N/A
Yes No N/A
Yes No N/A
Yes No N/A
Yes No N/A
Yes No N/A
es No N/A
Yes o N/A
Ye
G
~ No N/A
• feet
feet
Yes loo N/A
1A
Yes r Nod N/A
N/?a
Yes ~ N/A
N A
~Ye~s 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.