HYDRO23762

• Permit No: C1982057
• IBM Index Class Name: Hydrology
• Doc Date: 7/21/1998
• 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 INSPBCTION FORN
Stockpoads or Sumps
INSPECTOR'S NAME: any Raro
FACILITY CONFIGURATION: Stockpond
SITE NAME: T-2
MINE NAME: c n a Ir-W
MINE I.D. NO.: C-82-057
DATE: 05/12 ~, 8
DATE LAST INSPECTION: 03/13/98
LOCATION: NW3~cWi~~ mSN, R88W
LOCATION: B m± a of Hayden. CO
OWNER'S REP.: Brad Brown. Gen Mgr
1. Angle of elope: 3.3:1 upstream, 2.3:1 downstream Total = 5 .6:1 N/A
2. *Seepage (specify location, color, and approximate volume)
At isolated points on embankment elopes: Yea o N/A
At natural hillside: Yee No 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 ecarpe on treat: Yee N/A
4. Cracks or ecarpe on elope: Yes N~ N/A

5. Sloughing or bulging on elope: Yee ~ N/A
6. *Maj or erosion problems: Yes N N/A
7. Surface movements in valley bottom or on hillside: Yea ~ N/A
8. *Eroeion of toe: Yee ~ N/A
9. *Water impounded against downstream toe: Yee N® N/A
10. Existing embankment freeboard: Annroximately 6.9 feet
11. Increaae Decrease in water level: No change feet
12. Cracks, bulging, or eroaion on upstream face: Yee ~ N/A
13. Spillway eroaion: Yes ~ N/A
14. *Clogging
Spillway channels: Yee ~ N/A
Diversion ditches: Yee o 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 apace on the back of this sheet.