HYDRO21829

• Permit No: C1980005
• IBM Index Class Name: Hydrology
• Doc Date: 10/23/1998
• Doc Name: 3rd Qtr 1998 Inspections
• From: SENECA COAL CO
• To: DMG
• Permit Index Doc Type: SEDIMENT POND INSPECTIONS
• Media Type: D
• Archive: No

PERIODIC INSPECTION FORN
Stockpondc or Sumps
INSPECTOR'S NAME: Roy Karo
FACILITY CONFIGURATION: Stoc fond
SITE NAME: T-7
MINE NAME: Seneca II
MINE I.D. NO.: C-RO-005
DATE: 09/2B/9B
DATE LAST INSPECTION: 05/12/98
LOCATION: NF.3~cW~ Sec 12 TSN AB7W
LOCATION: 7.1 mi _cS of Hayden, Co
OWNER'S REP.: _9rad Brown Gen Mqr
1. Angle of elope: 2.5:1 upstream, 3:1 downstream Total = 5.5:1 N/A
2. *Seepage (specify location, color, and approximate volume)
At isolated points on embankment elopes: Yes ~ N/A
At natural hillside: Yee No N/A
Over widespread areas: Yes N~ N/A

From downstream foundation area: Yes ~ N/A
"Boils" beneath stream or ponded water: Yes N® N/A
3. Cracks or ecarpe on treat: Yee No N/A
4. Cracks or ecarpe on elope: Yes No N/A
5. Sloughing or bulging on elope: Yes No N/A
6. *Major erosion problems: Yes ~ N/A
7. Surface movements in valley bottom or on hillside: Yee ~ N/A
6. *Eroeion of toe: Yes ~ N/A

9. *Water impounded against downstream toe: Yee No N/A
10. Existing embankment freeboard: A~oroximately ~ feet
11. Increase Decrease in water level: Nn change feet
12. Cracks, bulging, or erosion on upstream face: Yee No N/A
13. Spillway erosion: Yee No N/A
14. *Clogging
Spillway channels: Yes 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.