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 FORN
Stockponds or Sumps
INSPECTOR'S NAME: $py_ICaro
FACILITY CONFIGURATION: Stoc pond
SITE NAME: T-3
MINE NAME: c n a Ir
MINE I.D. NO.: C-80-005
DATE: 09/28/98
DATE LAST INSPECTION: OS/~/98
LOCATION: NR3`~3~ cec 11 TSN. R87W
LOCATION: 7.t m± _cE of Hayden CO
OWNER'S REP.: Brad Brown Cen Mg~_
1. Angle of slope: 4:1 upstream, ael downstream Total = 8:1 N/A
2. *Seepage (specify location, color, and approximate volume)
At isolated points on embankment slopes: Yes ~ N/A
At natural hillside: Yes No N/A
Over widespread areas: Yee ~ N/A
From downstream foundation area: Yea ~ N/A
"Boils" beneath stream or ponded water: Yes ~ N/A
3. Cracks or acarpe on crest: Yes No N/A
4. Cracks or acarpe on elope: Yes Q N/A
5. Sloughing or bulging on elope: Yes ©o N/A
6. *Major erosion problems: Yea No N/A
7. Surface movements in valley bottom or on hillside: Yes No N/A
8. *Eroeion of toe: Yee N/A
9. *Water impounded against downstream toe: Yes ~
o N/A
10. Existing embankment freeboard: Annrox imately B.5 feet
11. Increase _~ Decrease in water level: 3.5 feet
12. Cracks, bulging, or erosion on upstream face: Yee ® N/A
13. Spillway erosion: Yes ~ N/A
14. *Clogging
Spillway channels: Yes N/A
Diversion ditches: Yee ~
o N/A
*Major adverse changee 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.