HYDRO25176

• Permit No: C1980005
• IBM Index Class Name: Hydrology
• Doc Date: 10/21/2002
• Doc Name: 3rd 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
S tockponds or Sumps
INSPECTOR'S NAME: Roy Karo
FACILITY CONFIGURATION: Stockpond
SITE NAME: T-8
MINE NAME: Seneca II
MINE I.D. NO.: C-80-005
DATE: 8/20/2002
DATE LAST INSPECTION: 6/20/2002
LOCATION: NENSW~, Sec 12, T5N, R87W
LOCATION: 7,1 mi SE of Hayden, CO
OWNER'S REP.; Gregg Kitchen Gen. Mgr.
Circle or write in appropriate response
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Angle of slope: 3:1 upstream, 3.5;1 downstream Total = 6.5:1 N/A
*Seepage (specify location, color, and approximate volume)
At isolated points on embankment slopes: Yes N/A
At natural hillside: Yes N/A
Over widespread aIeaS: Yes N/A
Erom downstream foundation area: Yes N/A
"Boils" beneath stream or ponded water: Yes N/A
Cracks or scarps on crest: Yes N/A
Cracks or scarps on slope: Yes N/A
Sloughing or bulging on slope: Yes N/A
*Major erosion problems: Yes N/A
Surface movements in valley bottom or on hillside: Yes N/A
*Erosion of toe: Yes N/A
*Water impounded against downstream toe: Yes o N/A
Existing embankment freeboard: Approximately 2 feet
Increase Decrease in water Level: No change feet
Cracks, bulging, or erosion on upstream face: Yes N/A
Spillway erosion: es ~ N/A
*Clogging ~

Spillway channels: 'Yes ~ N/A
Diversion ditches: ~ Yes 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.
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