HYDRO30358

• Permit No: C1980005
• IBM Index Class Name: Hydrology
• Doc Date: 4/23/1998
• Doc Name: 1sst Qtr 1998 Inspections
• 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: Mi _ha 1 A~ av;t a DATE: 03/23/98
NPDES I.D. NO.: CO-0000221 D.P_ 003
FACILITY CONFIGURATION: Diked Pond DATE LAST INSPECTION: .~/72/Q7
SITE NAME: No thw = rmrnvn m n X003 LOCATION: Sr9, sW'~,, sic 2Z, T6N, R87W
MINE NAME: s n a IT Min (s n a _oal of LOCATION: 7.1 mi. Sc_ of Hayden,
MINE I.D. NO.: CMT.Rn p rm' No. -80-OOS OWNER'S REP.: Brad Grown. CPn Mgt
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20.
Foundation preparation (removal of vegetation, stumps, topsoil: es No
Lift thickness: _1Z in
Compaction according to approved plan: ~ No
Burning (specify extent and location): Yes No
Angle of elope: 2:1 upstream, 3:1 downstream Total = S•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 et ream or ponded water:
Cracks or scarps on crest:
Cracks or scarps on slope:
Sloughing or bulging on elope:
*Major erosion problems:
Surface movements in valley bottom or on hillside:
*Erosion of toe:
*Water impounded against toe:
Existing embankment freeboard: see comments
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
Yes
Yes ®o
Yea o
Yes o
Yes
Yea o
Yes o
Yes o
Yes No
Yee o
Yes o
Yee o
4.9 feet
feet
Yea
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
Yea ®o N A
Yes No
Yee ~ N/A
Yea Q N/A
Yes No
ee 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 apace on
the back of this sheet.