HYDRO31088

• Permit No: C1980005
• IBM Index Class Name: Hydrology
• Doc Date: 2/1/2002
• Doc Name: 3rd Quarter 2000 Stockpond Inspection Reports
• From: Montgomery Watson Harza
• To: DMG
• Permit Index Doc Type: Sediment Pond Inspections
• Media Type: D
• Archive: No

PERIODIC INSPECTION FORM
• Stockponds or Sumps
INSPECTOR'S NAME: Mike Altavilla DATE: 09/29/00
FACILITY CONFIGURATION: Stockpond DATE LAST INSPECTION: 06/29/00
SITE NAME: T-8 LOCATION: NE'/.SW%,Sec12,75N,R87W
MINE NAME Seneca II LOCATION: 7.1 mi SE of Hayden, CO
MINE I.D. NO.: C-80-005 OWNER'S REP.: Brad Brown, Gen Mgr
Circle/Indicate or write in appropriate response
1. Angle of slope: 3:1 upstream, 3.5:1 downstream Total = 6.5:1 N/A
2.'Seepage (specify location, color, and approximate volume)
At isolated points on embankment slopes: Yes No N/A
At natural hillside: Yes No N/A
Over widespread areas: Yes No N/A
From downstream foundation area: Yes No N/A
"Boils" beneath stream or ponded water: Yes No N/A
3. Cracks or scarps on crest: Yes No N/A
4. Cracks or scarps on slope: Yes No N/A
5. Sloughing or bulging on slope: Yes No N/A
6.'Majorerosionproblems: Yes No N/A
7. Surface movements in valley bottom or on hillside: Yes No N/A
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8. 'Erosion of toe: Yes No N/A
9.' Water impounded against downstream toe: Yes No N/A
10. Existing embankment freeboard: approximately 4.0 (feet)
11. Increase _ _ Decrease in water level: no change (feet)
12. Cracks, bulging, or erosion on upstream face: Yes No N/A
13. Spillway erosion: Yes No N/A
14.' Clogging
Spillway channels: Yes No N/A
Diversion ditches: Yes 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
(eMent, location, volume, etc.) in the space on the back of this sheet.

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