HYDRO25365

• Permit No: C1982057
• IBM Index Class Name: Hydrology
• Doc Date: 10/21/2002
• Doc Name: 3rd Quarter 2002 Stockpond Inspections
• From: Seneca Coal Company
• To: DMG
• Permit Index Doc Type: Sediment Pond Inspections
• Media Type: D
• Archive: No

PERIODIC INSPECTION FORM
3tockponds or Sumpa
INSPECTOR'S NAME: Roy Karo
FACILITY CONFIGORATION: Stockpond
SITE NAME: T-22
MINE NAME: Seneca II-W
MINE I.D. NO.: C-82-057
DATE: 8/20/2002
DATE LAST INSPECTION: 6/20/2002
LOCATION: SE~SW~, Sec 10, T5N, R88W
LOCATION: 6 mi S of Hayden, CO
OWNER'S REP.: Greqg Kitchen Gen.Mgr.
Circle or write in appropriate response
1. Angle of slope: 3.5:1 upstream, 2.5:1 downstream Total = 6:1 N/A
2. *Seepage (specify location, color, and approximate volume )

At isolated points on embankment slopes: Yes ~ N/A
At natural hillside: Yes ~ N/A
Over widespread areas: Yes N/A
From downstream foundation area: Yes N/A
"Boils" beneath stream or ponded water: Yes o N/A
3. Cracks or scarps on crest: Yes N/A
9. Cracks or scarps on slope: Yes N/A
5. Sloughing or bulging on slope: Yes N/A
6. *Maj or erosion problems: Yes N/A
7. Surface movements in valley bottom or on hillside: Yes N/A
8. *Erosion of toe: Yes N/A
9. *Water impounded against downstream toe: Yes N/A
10. Existing embankment freeboard: Approximately 3.0 feet
11. Increase x Decrease in water level: feet
12. Cracks, bulging, or erosion on upstream face: Yes ~ N/A
13. Spillway erosion: Yes ,~lc
`~ N/A
14. *Clogging ~~
Spillway channels: Yes N/A
Diversion ditches: Yes ~ N/A

*Ma jor adverse changes in these items could cause instability and should be rep orted to
the Engineering Manager and Mine Superintendent for furth er evaluation. Adverse
con ditions 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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