HYDRO30539

• Permit No: C1982057
• IBM Index Class Name: Hydrology
• Doc Date: 10/5/2007
• Doc Name: 3rd Quarter 2007 Stockpond Inspection Report
• 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
Stockponds or Sumps
INSPECTOR'S NAME: Roy Karo
FACILITY CONFIGURATION: Stockpond
SITE NAME: T-20
MINE NAME: Seneca ZI-W
MINE I.D. NO.: C-82-057
DATE: / ~ ~~
DATE LA T INSPECTION:
LOCATION: NW'aNE <, Sec 15, TSN, R88W
LOCATION: 8 mi S of Hayden, CO
OWNER'S REP.: Roy Karo, Manager
Circle or write in appropriate response
1
2
Angle of slope: 3.9:1 upstream, 4.6:1 downstream
*Seepage (specify location, color, and approximate volume)
At isolated points on embankment slopes:
At natural hillside:
Over widespread areas:
From downstream foundation area:
Total = 8.5:1
Yes o
Yes o
Yes o
Yes No
"Boils" beneath stream or ponded water: Yes No
3. Cracks or scarps on crest: Yes No
9. Cracks or scarps on slope: Yes No
5. Sloughing or bulging on slope: Yes No
6. *Major erosion problems: Yes No
7. Surface movements in valley bottom or on hillside: Yes No
8. *Erosion of toe: Yes No
9. *Water impounded against downstream toe: Yes
10. Existing embankment Freeboard:
11. Increase Decrease in water level:
12. Cracks, bulging, or erosion on upstream face: Yes
13. Spillway erosion: Yes
19. *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
fe t
o ~ N/A
No N/A
No N/A
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 space on the back of this sheet.
Comments • J /L ~ ~ N~GL
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