HYDRO27924

• Permit No: C1980005
• IBM Index Class Name: Hydrology
• Doc Date: 3/13/2000
• Doc Name: 4th Qtr 1999 Inspections
• From: SENECA COAL CO
• To: DMG
• Permit Index Doc Type: SEDIMENT POND INSPECTIONS
• Media Type: D
• Archive: No

PBRIODIC INSPECTION FORM
Stockponds or Sumps
INSPECTOR'S NAME: Michael Altavilla
FACILITY CONFIGURATION: Stoc pond
SITE NAME: T-7
MINE NAME: Seneca II
MINE I.D. NO.: C-80-DOS
DATE: 11/02/99
DATE LAST INSPECTION: Da/~/oo
LOCATION: N ~}CW7t ~ryr12 TSN R87W
LOCATION: 7.1 m; .cE of Hayden CO
OWNER'S REP.: Brad Brown Gen Mqr
1. Angle of elope: 2.5:1 upstream, 3:1 downstream Total = 5_S :L N/A
2. *Seepage (specify location, color, and approximate volume)
At isolated points on embankment slopee: Yee ~ N/A
At natural hillside: Yes ~ N/A
Over widespread areas: Yes I~ N/A
From downstream foundation area: Yes ® N/A
"Boils" beneath stream or ponded water: Yee ® N/A
3. Cracks or ecarpe on treat: Yee ~ N/A
4. Cracks or ecarpe on elope: Yes ~ N/A
5. Sloughing or bulging on elope: Yes ~ N/A
6. *Major erosion problems: Yes ® N/A
7. Surface movements in valley bottom or on hillside: Yee ~ N/A
8. *Eroeion of toe: Yee ~ N/A
9. *Water impounded against downstream toe: Yee ® N/A
30. Existing embankment freeboard: Ann ox'ma ly a_D feet
11. Increase Decrease in water level: No change feet
12. Cracks, bulging, or erosion on upstream face: Yes ~ N/A
13. Spillway erosion: Yes ~ N/A
14. *Clogging
Spillway channels: Yes N/A
Diversion ditches: Yes ~ 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 space on the back of this sheet.