HYDRO26807

• Permit No: C1980005
• IBM Index Class Name: Hydrology
• Doc Date: 7/21/1998
• Doc Name: 2nd Qtr 1998 Inspections
• From: SENECA COAL CO
• To: DMG
• Permit Index Doc Type: SEDIMENT POND INSPECTIONS
• Media Type: D
• Archive: No

PERIODIC INSPECTION FORM
6tockponds or Sumps
INSPECTOR'S NAME: Roy Rar^
FACILITY CONFIGURATION: Stocknond
SITE NAME: T-7 ~-
MINE NAME: Seneca II
MINE I.D. NO.: C-80-005
DATE: 05/12/98
DATE LAST INSPECTION: 03/13/98
LOCATION: NF.3fcW3l Sec 12 TSN R87W
LOCATION: 7.1 m, c. of Hayden, CO
OWNER'S REP.: Brad Hrown Gen Mq~_
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 No N/A
At natural hillside: Yee ~ N/A
Over widespread areas: Yes ~ N/A
From downstream foundation area: Yee C~ N/A
"Boils" beneath stream or ponded water: Yee ~ N/A
3. cracks or scarps on crest: Yee ~ N/A
4. Cracks or scarps on slope: Yea ® N/A
5. Sloughing or bulging on elope: Yee No N/A
6. *Major erosion problems: Yes 0° N/A
7. Surface movements in valley bottom or on hillside: Yes 0° N/A
8. *Eroeion of toe: Yee ~ N/A
9. *Water impounded against downstream toe: Yes No N/A
10. Existing embankment freeboard: Ai proximately ~ feet
11. Increase Decrease in water level: No change feet
12. Cracks, bulging, or erosion on upstream face: Yee ~ N/A
13. Spillway erosion: Yes ~ N/A
14. *Clogging
Spillway channels: Yee N/A
Diversion ditches: Yee ~
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 apace on the back of this sheet.