HYDRO24564

• Permit No: C1982057
• IBM Index Class Name: Hydrology
• Doc Date: 1/7/2002
• Doc Name: SENECA II-W MINE C-82-057 QTRLY STOCKPOND INSPECTIONS
• From: SENECA COAL CO
• To: DMG
• Permit Index Doc Type: SEDIMENT POND INSPECTIONS
• Media Type: D
• Archive: No

PERIODIC INSPECTION FORM
Stockponds or Sumps
I INSPECTOR'S NAME: Roy Karo
I FACILITY CONFIGURATION: Stockpond
SITE NAME: T-3
MINE NAME: Seneca II-W
MINE I.D. NO.: C-E2-057
DATE: 12/20/2001
DATE LAST INSPECTION: 08/17/2001
LOCATION: NW'/,SE'iL, Sec 22, T5N, R88W
LOCATION: 8 mi S of Hayden, CO
OWNER'S REP.: Gregg Kitchen Gen.Mgr.
Circle or write in appropriate response
1. Angle of slope: 4.3:1 upstream, 2.9:1 downstream Total = 7.2:1
2. *Seepage (specify location, color, and approximate volume)
At isolated points on embankment slopes: Yes p
At natural hillside: Yes
Over widespread areas: Yes I~
From downstream foundation area: Yes 1~
"Boils" beneath stream or ponded water: Yes
3. Cracks or scarps on crest: Yes
4. Cracks or scarps on slope: Yes
5. Sloughing or bulging on slope: Yes
6. *Major erosion problems: Yes
7. Surface movements in valley bottom or on hillside: Yes
8. *Erosion of toe: Yes
9. *Water impounded against downstream toe: Yes
10. Existing embankment freeboard: Approximately 3.7 feet
11. x Increase Decrease in water level: feet
12. Cracks, bulging, or erosion on upstream face: Yes
13. Spillway erosion: Yes
14. *Clogging
Spillway channels: Yes
Diversion ditches: Yes
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
*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.
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