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 Sumpa
INSPECTOR'S NAME: Rov Karo
FACILITY CONFIGURATION: Stockoond
SITE NAME: T-1
MINE NAME: Seneca II
MINE I.D. NO.: C-80-005
DATE: 03/10/97
DATE LAST INSPECTION: 12/16/96
LOCATION: SESiSWy. Sec 2. TSN. RR7W
LOCATION: 7.1 mi SE of Hayden. CO
OWNER'S REP.: Brad Brown. Gen Mar
Circle or write in aonrooriate resnonae
1. Angle of slope: 3:1 upstream, 4:1 downstream Total = 7:1 N/A
2. *Seepage (specify location, color, and approximate volume)
At isolated points on embankment slopes: Yes N® N/A
At natural hillside: Yes No N/A
Over widespread areas: Yes N N/A
From downstream foundation area: Yes o N/A
"Boils" beneath stream or ponded water: Yes No N/A
3. Cracks or scarps on crest: Yes No N/A
4. Cracks or scarps on slope: Yes No N/A
5. Sloughing or bulging on slope: Yes N N/A
6. *Major erosion problems: Yes No N/A
7. Surface movements in valley bottom or on hillside: Yes No N/A
8. +Erosion of toe: Yes o N/A
9. •Water impounded against downstream toe: Yes o N/A
10. Existing embankment freeboard: Aooroximately 2 feet
11. Increase Decrease in water level: No chance feet
12. Cracks, bulging, or erosion on upstream face: Yes N/A
13. Spillway erosion: Yes ~
No N/A
14. *Clogging

Spillway channels: Yes (No/ N/A
Diversion ditches: Yes No 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.