HYDRO21829

• Permit No: C1980005
• IBM Index Class Name: Hydrology
• Doc Date: 10/23/1998
• Doc Name: 3rd Qtr 1998 Inspections
• From: SENECA COAL CO
• To: DMG
• Permit Index Doc Type: SEDIMENT POND INSPECTIONS
• Media Type: D
• Archive: No

PERIODIC INSPECTION PORN
Stockponde or Sumps
INSPECTOR'S NAME: Roy Karo
FACILITY CONFIGURATION: Stoc pond
SITE NAME: T-8
MINE NAME: Seneca II
MINE I.D. NO.: C-80-005
DATE: 09/28/98
DATE LAST INSPECTION: _05/12/98
LOCATION: ~}cw'~ Sec 12 TSN RS7w
LOCATION: 7.t mi _cE of Hayden, CO
OWNER'S REP.: Brad Brnwn. Gen Mq~_
1. Angle of elope: 3:1 upstream, 3.5:1 downstream Total = 6.5:1 N/A
2. *Seepage (specify location, color, and approximate volume)
At isolated points on embankment elopes: Yee No N/A
At natural hillside: Yee No N/A
Over widespread areas: Yes No N/A
From downstream foundation area: Yea No N/A
"Boils" beneath stream or ponded water: Yee ~ N/R
3. Cracks or scarps on treat: Yes No N/A
4. Cracks or scarps on slope: Yea No N/A
5. Sloughing or bulging on slope: Yee No N/A
6. *Major erosion problems: Yea ~ N/A
7. Surface movements in valley bottom or on hillside: Yes ~ N/A
8. *Eroaion of toe: Yee ® N/A
9. *Water impounded against downstream toe: Yee ~ N/A
10. Existing embankment freeboard: Approximately ~ feet
11. Increase Decrease in water level: No change feet
12. Cracks, bulging, or erosion on upstream face: Yes 'lo N/A
13. Spillway erosion: Yes N/A
14. *Clogging
Spillway channels: Yee N/A
Diversion ditches: Yes ~ 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.