2008-10-24_HYDROLOGY - C1982057

• Permit No: C1982057
• IBM Index Class Name: HYDROLOGY
• Doc Date: 10/24/2008
• Doc Name: 3rd Quarter 2008 Stockpond Inspections
• From: Seneca Coal Company
• To: DRMS
• Permit Index Doc Type: Sediment Pond Inspect
• Email Name: DTM
• Media Type: D
• Archive: No

PERIODIC INSPECTION FORM
Stockponds or Sumps
INSPECTOR'S NAME: Roy Karo
FACILITY CONFIGURATION: Stockpond
SITE NAME: T-3
MINE NAME: Seneca II-W
MINE I.D. NO.: C-82-057
DATE: / l Od
DATE LAST I SPE TION:
LOCATION: NWl/4SEY4, Sec 22 , TSN, R88W
LOCATION: 8 mi S of Hayden, CO
OWNER'S REP.: -Gregg Kitchen Gen.Mar.
Circle or write in approximate response
1. Angle of slope: 4.3:1 upstream, 2.9:1 downstream
2. *Seepage (specify location, color, and approximate volume)
At isolated points on embankment slopes:
At natural hillside:
Over widespread areas:
From downstream foundation area:
"Boils" beneath stream or ponded water:
3. Cracks or scarps on crest:
4. Cracks or scarps on slope:
5. Sloughing or bulging on slope:
6. *Major erosion problems:
7. Surface movements in valley bottom or on hillside:
8. *Erosion of toe:
9. *Water impounded against downstream toe:
Yes No N/A
Yes No N/A
Yes No N/A
Yes No N/A
Yes No N/A
Yes No N/A
Yes No N/A
Yes No N/A
Yes No N/A
Yes No N/A
Yes No N/A
Yes N N/A

10. Existing embankment freeboard: .r
feet
11. Increase Decrease in water level: f t
12. Cracks, bulging, or erosion on upstream face: Yes N/A
13. Spillway erosion: Yes No N/A
14. *Clogging
Spillway channels: Yes No N/A
Diversion ditches: Yes 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.
Total = 7.2:1 N/A
Comments: / FT 41 0