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 FORM
Stockpouds or Sumps
INSPECTOR'S NAME: Roy xaro
FACILITY CONFIGURATION: Stocknond
SITE NAME: m-7
MINE NAME: Seneca II-W
MINE I.D. NO.: C-82-057
DATE: OQ/25/97
DATE LAST INSPECTION: ~_fi/23/97
LOCATION: yE_'~NW3~ sec 22 maN R88W
LOCATION: 8 mi _c of Hayden CO
OWNER'S REP.: Rrad Brown, CPn My~_
1. Angle of slope: 5.4:1 upstream, 6.2:1 downstream Total = 77 "6:7 N/A
2. *Seepage (specify location, color, and approximate volume)
At isolated points on embankment elopes: Yes ~ N/A
At natural hillside: Yes ~ N/A
Over widespread areas: Yes o NfA
From downstream foundation area: Yee N N/A
"Boils" beneath stream or ponded water: Yes N/A
3. Cracks or scarps on crest: Yea N® N/A
4. Cracks or scarps on elope: Yes f1o N/A
5. Sloughing or bulging on elope: Yes ~ N/A
6. *Major erosion problems: ee No N/A
7. Surface movements in valley bottom or on hillside: Yee ~ N/A
8. *Eroeion of toe: Yes ~ N/A
9. *Wat er impounded against downstream toe: Yes ~ N/A
10. Existing embankment freeboard: see comments feet
11. Increase Decrease in water level: feet
12. Cracks, bulging, or erosion on upstream face: Yes ~ N/A

13. Spillway erosion: es No N/A
14. *Clogging
Spillway channels: Yes ~ N/A
Diversion ditches: Yea 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.