HYDRO24007

• Permit No: C1980005
• IBM Index Class Name: Hydrology
• Doc Date: 4/10/2002
• Doc Name: 1st Quarter 2002 Stockpond Inspections
• From: Seneca Coal Company
• 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 DATE: _
FACILITY CONFIGURATION: Stockpond DATE LAST
SITE NAME: T-12 LOCATION:
MINE NAME: Seneca II LOCATION:
MINE I.D. NO.: C-80-005 OWNER'S R
3/20/2002
INSPECTION: 12/20/2001
NWT/,S E~/„ Sec 12, TSN, R87W
7.1 mi SE of Hayden, CO
iP.: Gregg Kitchen Gen. Mgr
Circle or write in appropriate response
1. Angle of slope: 3:1 upstream, 3:1 downstream Total = 6:1 N/A
2. *Seepage (specify location, color, and approximate volume)
At isolated points on embankment slopes: Yes .T~ N/A
At natural hillside: Yes T~o N/A
Over widespread areas: Yes ,,,,,\AAgA
\
' N/A
From downstream foundation area: Yes \
~ N/A
"Boils" beneath stream or ponded water: Yes ~ N/A
3. Cracks or scarps on crest: Yes ~ N/A
4. Cracks or scarps on slope: Yes ® N/A
5. Sloughing or bulging on slope: Yes ~ N/A
6. *Maj or erosion problems: Yes I~ N/A
7. Surface movements in valley bottom or on hillside: Yes ~ N/A
8. *Erosion of toe: Yes ~ N/A
9. *Water impounded against downstream toe: Yes ® N/A
10. Existing embankment freeboard: Approximately 7 feet
11. Increase Decrease in water level: No change feet
12. Cracks, bulging, or erosion on upstream face: Yes I~ N/A
13. Spillway erosion: Yes ~ N/A
14. *Clogging
Spillway channels: Yes ~ N/A
Diversion ditches: Yes I~ N/A
*Maj or 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.
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