HYDRO22699

• Permit No: C1982057
• IBM Index Class Name: Hydrology
• Doc Date: 4/2/2007
• Doc Name: 1st Quarter 2007 Sedimentation Pond Inspections
• From: Seneca Coal Company
• To: DRMS
• Permit Index Doc Type: Sediment Pond Inspections
• Media Type: D
• Archive: No

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PERIODIC INSPECTION FORM
Water, Sediment, or Slurry impoundments
' 3 `~2 `o
INSPECTOR S NAME: Dennis Jones DATE:
NPDES I.D. NO.: NA
FACILITY CONFIGURATION: Topsoil Pile Sump
DATE LAST INSPECTI 1~
ON: fy '"~3 `~~

SITE NAME:
Topsoil Pile CCC Sump
LOCATION: SW~/. NEB/., _
Sec. 34. TSN, R88W
MINE NAME: Seneca II-W Mine (Seneca Coal Co ) LOCATION: 8 mi. 5 of Havden. CO
MINE I.D. NO.: CMLRD Permit No. C-82-057 OWNER'S REP.: Greg g Kitchen, Gen Mqr
Circle or write in appropriate response
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19. *Cracking or crushing of pipes
Spillway pipes:
Decant system:
20. Trash racks clear and in place:
Foundation preparation (removal of vegetation, stumps, topsoil
Lift thickness:
Compaction according to approved plan:
Burning (specify extent and location):
Angle of slope: upstream, 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 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 0')
Increase Decrease in water level:
Cracks, bulging, or erosion on upstream face:
Visible sumps or sinkholes in slurry surface:
*Clogging
Spillway channels and pipes:
Decant system:
Ditches:
Total =
Yes
in.
No
NL
Yes No N/A
Yes No N/A
Yes No N/A
Yes No N/A
Yes No N/A
Yes No N/A
Yes No N/A
Yes No N/A
Yes No N/A
Yes No N/A
Yes No N/A
Y~s N N/A
Eeet
feet
Yes Imo N/A
N A
Yes No N/A
NL
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.