HYDRO20150

• Permit No: C1980005
• IBM Index Class Name: Hydrology
• Doc Date: 7/16/1997
• Doc Name: 2nd Qtr 1997 STOCKPOND INSPECTIONS
• From: SENECA COAL CO
• To: DMG
• Permit Index Doc Type: SEDIMENT POND INSPECTIONS
• Media Type: D
• Archive: No

PERIODIC INSPECTION FORM
Stockponda or Sumpa
INSPECTOR'S NAME: Roy Karo
FACILITY CONFIGURATION: Stockoond
SITE NAME: T-1
MINE NAME: Seneca II
MINE I.D. NO.: C-80 005
DATE: 06/24/97
DATE LAST INSPECTION: 03/10/97
LOCATION: SEySWy, Sec 2. TSN. R87W
LOCATION: 7.1 mi SE of Hayden, CO
OWNER'S REP.: Brad Brown. Gen Mar
Circle or write in anorooriate reanonae
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 o N/A
At natural hillside: Yes N N/A
Over widespread areas: Yes N N/A
From downstream foundation area: Yes No N/A
"Boils" beneath stream or ponded water: Yes N/A
3. Cracks or scarps on crest: Yes ~~~ N/A
4. Cracks or scarps on slope: Yes ~
No N/A
5. Sloughing or bulging on slope: Yes ~ N/A
6. +Major erosion problems: Yes o N/A
7. Surface movements in valley bottom or on hillside: Yes o 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 1 feet
11. X Increase Decrease in water level: 1 feet
12. Cracks, bulging, or erosion on upstream face: Yes
~ N/A
13. Spillway erosion: Yes N/A
14. +Clogging

Spillway channels: Yes Rid N/A
Diversion ditches: Yes o N/A
+Maj or 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.