HYDRO22607

• Permit No: C1982057
• IBM Index Class Name: Hydrology
• Doc Date: 1/3/2006
• Doc Name: 4th Quarter 2005 Sedimentation Pond
• From: Seneca Coal Company
• To: DMG
• Permit Index Doc Type: Sediment Pond Inspections
• Media Type: D
• Archive: No

PERIODIC INSPECTION FORM
Water, Sediment, or Slurry Is)poundments
INSPECTOR' S NAME : Dennis Jones DATE : / O ^ ~ ~ ^~ S
NPDES I.D . NO.: NA ^~ ~^aC
J
FACILITY CONFIGURATION: Top soil Pile Sump DATE LAST INSPECTION:
SITE NAME : Topsoil Pile CCC Sump LOCATION: SW's NEi/.. Sec. 34. 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.: Gregg Kitchen. Gen Mar
Circle or write in appropriate response
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Foundation preparation (removal of vegetation, stumps, topsoil: _
Lift thickness:
Compaction according to approved plan:
Burning (specify extent and location):
Angle of slope: upstream, downstream Total =
*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')'1• S
_(,L, 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:
*Cracking or crushing of pipes
Spillway pipes:
Decant system:
Trash racks clear and in place:
Yes
NO
in.
NL
Yes No
Yes No
Yes No
Yes No
Yes No
Yes No
Yes No
Yes No
Yes No
Yes No
Yes No
Yes
feet
D • S feet
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
NL
~A
Yes No N/A
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.