HYDRO22851

• Permit No: C1982057
• IBM Index Class Name: Hydrology
• Doc Date: 10/15/1997
• Doc Name: SENECA II-W MINE C-82-057 QUARTERLY STOCKPOND INSPECTIONS
• From: SENECA COAL CO
• To: DMG
• Permit Index Doc Type: SEDIMENT POND INSPECTIONS
• Media Type: D
• Archive: No

PERIODIC INSPECTION PORM
Stockponds or Sumps
INSPECTOR'S NAME: R~ xaro
FACILITY CONFIGURATION: Stockgpnd
SITE NAME: T-1
MINE NAME: Seneca Ir-W
MINE I.D. NO.: C-82-057
DATE: 09/25/97
DATE LAST INSPECTION: 06/23/97
LOCATION: awhaF3~ Sec t6 TSN R88W
LOCATION: 8 mi S of Hayden. CO
OWNER'S REP.: Brad Brown, Gen Mq~
1. Angle of elope: 3:1 upstream, 3:1 downstream Total = 6:1 N/A
2. *Seepage (specify location, color, and approximate volume)
At isolated points on embankment elopes: Yes ~o N/A
At natural hillside: Yea ©o N/A
Over widespread areas: Yes ©o N/A
From downstream foundation area: Yes ~ N/A
"Boils" beneath stream or ponded water: Yes ~o N/A
3. Cracks or scarps on treat: Yes ~ N/A
4. Cracks or scarps on elope: Yes ~ N/A
5. Sloughing or bulging on slope: Yes ~ N/A
6. *Major erosion problems: Yea ~~~
~ N/A
7. Surface movements in valley bottom or on hillside: Yes o N/A
8. *Eroeion of toe: Yes ///~~~ N/A
9. *Water impounded against downstream toe: Yes ~
o N/A
10. Existing embankment freeboard: Approximately O.5 feet
11. Increase Decrease in water level: No chance feet
12. Cracks, bulging, or erosion on upstream face: Yea No N/A
13. Spillway erosion: Yee ~ N/A
14. *Clogging
Spillway channels: Yes ~ N/A
Diversion ditches: Yes o 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.