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 INSPECTION FORM
Stockponds or Sumps
INSPECTOR'S NAME: Roy Karo
FACILITY CONFIGURATION: ~t or'koond
SITE NAME: T-3
MINE NAME: senses rr-W
MINE I.D. NO.: C-82-057
DATE: 12f22/97
DATE LAST INSPECTION: 09/2597
LOCATION: NW~SSESC, C c 2 TSN R88W
LOCATION: 8 mi s of Hayden ~ CO
OWNER'S REP.: Brad Brown Gen Mgr
1. Angle of elope: 4.3:1 upstream, 2.9:1 downstream Total = L 2t1 N/A
2. *Seepage (specify location, color, and approximate volume)
At isolated points on embankment slopes: Yea ® N/A

At natural hillside: Yes '~ N/A
Over widespread areas: Yee ~ N/A
From downstream foundation area: Yes ® N/A
"Boils" beneath et ream or ponded water: Yea o N/A
3. Cracks or scarps on crest: Yes o N/A
4. Cracks Or scarps on elope: Yee /~ N/A
5. Sloughing or bulging on elope: Yee No N/A
6. *Major erosion problems: Yea ® N/A
7. Surface movements in valley bottom or on hillside: Yes ~ N/A
8. *Eroeion of toe: Yee o N/A
9. *Water impounded against downstream toe: Yea o N/A
10. Existing embankment freeboard: An~nroximately 3"7 feet
11. Increase Decrease in water level: No change ~ feet
12. Cracks, bulging, or erosion on upstream face: Yes ~ N/A
13. Spillway erosion: Yes No N/A
14. *Clogging
Spillway channels: Yea o 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 space on the back of this sheet.