HYDRO30425

• Permit No: C1980005
• IBM Index Class Name: Hydrology
• Doc Date: 12/12/2001
• Doc Name: 4th Q 2001 Sediment Pond Inspections
• 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 Impoundments
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' ~~~~ S I1- S~ d I
INSPECTOR
S NAME: ~1@ I1v~, ~ S o h.~~c. DATE:
NPDES I.D. NO.: CO- 0000221 D.P. 002
FACILITY CONFIGURATION: Incised Pond DATE LAST INSPECTION:
SITE NAME: Wadae Impo undment #002 LOCATION: NWi(a NE'/a. Sec. 34. T6N. R87W
MINE NAME: Seneca II Mine (Seneca Coal Col LOCATION: 7.1 mi. SE of Hayden CO
MINE I.D. NO.: CMLRD Permit No C -fl0-005 OWNER'S REP.: Greag K itchen, Gen Mar
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Cirele or write in appropriate response
Foundation preparation (removal of vegetation, stumps, topsoil: NLA
Lift thickness:
Compaction according to approved plan: N!A
Burning (specify extent and location): NLA
Angle of slope: upstream, downstream Total = N1_A_
*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:
Increase Decrease in water level: L1,0 Cl.~a ~.p Q
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:
~A_
NLA
N A
~A
NLA
Yes No N/A
1A
~A
NL~
Yes No N/A
Yes o N/A

NL
N/A feet
feet
N/A

Yes No N/A
N/A
Yes No N/A
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.