HYDRO28422

• Permit No: C1980005
• IBM Index Class Name: Hydrology
• Doc Date: 1/30/1998
• Doc Name: 4th Qtr 1997 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: Boy Karo
FACILITY CONFIGURATION: Stocknond
SITE NAME: T-31
MINE NAME: Seneca TT
MINE I.D. NO.: _.C-80-005
DATE: 12/22/97
DATE LAST INSPECTION: ~0 _/24/97
LOCATION: NE11NW3~, Sec 1 T5N R87W
LOCATION: 7.t m, cF of Hayden, CO
OWNER'S REP.: Brad Brown. Gen Mq~
1. Angle of elope: upstream, downstream Total =
2
3
4
5
6
7
*Seepage (specify location, color, and approximate volume)
At isolated points on embankment elopes:
At natural hillside: _
Over widespread areas:
From downstream foundation area:
"Boils" beneath stream or ponded water:
Cracks or ecarpe on crest:
Cracks or ecarpe on slope:
Sloughing or bulging on elope:
*Major erosion problems:
Surface movements in valley bottom or on hillside:
8. *Eroeion of toe:
9. *Water impounded against downstream toe:
10. Existing embankment freeboard: approximately
11. Increase Decrease in water level: No change
12. Cracks, bulging, or erosion on upstream face:
13
14
Spillway erosion:
*clogging
Spillway channels:
Diversion ditches:
Yes
Yes
Yee No
Yea
YBB ©O
Yee
Yes
Yea
Yes ~~°~
Yee /no/
Yes®
Yee ([vo
~ feet
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
feet
Yes ~ N/A
Yee No N/A
Yee ~ N/A
Yes 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.