HYDRO20238

• Permit No: C1980005
• IBM Index Class Name: Hydrology
• Doc Date: 4/11/1997
• Doc Name: 1st Qtr 1997 Inspections
• From: SENECA COAL CO
• To: DMG
• Permit Index Doc Type: SEDIMENT POND INSPECTIONS
• Media Type: D
• Archive: No

PERIODIC INSPECTION FORM
Stockponds or Sumps
INSPECTOR'S NAME: Rov Karo
FACILITY CONFIGURATION: Stockpond
SITE NAME: T-4
MINE NAME: Seneca II
MINE I.D. NO.: C-80-005
DATE: 03/10/97
DATE LAST INSPECTION: 12/16/96
LOCATION: SWy.NEY., Sec 11. TSN. R87W
LOCATION: 7.1 mi SE of Hayden, CO
OWNER'S REP.: Brad Brown, Gen Mar
Circle or write in appropriate response
1. Angle of slope: 3:1 upstream, 2.5:1 downstream Total = 5.5: 1 N/A
2. +Seepage (specify location, color, and approximate volume)
At isolated points on embankment slopes: Yes o N/A
At natural hillside: Yes 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 crest: Yes N/A
4. Cracks or scarps on slope: Yes o N/A
5. Sloughing or bulging on slope: Yes o N/A
6. +Major erosion problems: Yes ~ N/A
7. Surface movements in valley bottom or on hillside: Yes ~ N/A
8. *Erosion of toe: Yes o N/A
9. *Water impounded against downstream toe: Yes o N/A
10. Existing embankment freeboard: See comments 5 feet
11. Increase Decrease in water level: feet

12. Cracks, bulging, or erosion on upstream face: Yes No N/A
13. Spillway erosion: Yes o N/A
14. +Clogging
Spillway channels: Yes /~N~o N/A
Diversion ditches: Yes (y/~~~ N/A
*Maj or adverse changes in these items could cause instability and should be reported to
the Engineering Manager and Mine Superintendent for Eu rther evaluation. Adverse
conditions noted in these items should normally be described (extent, location, volume,
etc.) in the space on the back of this sheet.