HYDRO25847

• Permit No: C1980005
• IBM Index Class Name: Hydrology
• Doc Date: 2/1/2002
• Doc Name: 4th Quarter 2000 Stockpond Inspection Reports
• From: Montgomery Watson Harza
• To: DMG
• Permit Index Doc Type: Sediment Pond Inspections
• Media Type: D
• Archive: No

i~
PERIODIC INSPECTION FORM
Stockponds or Sumps
INSPECTOR'S NAME: Mike Altavilla DATE: 12/05/00
FACILITY CONFIGURATION; Stockpond DATE LAST INSPECTION: 09/29/00
SITE NAME: T-7 LOCATION: NE'/.SW/,Sect2,T5N,RS~w
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
Circlellndicate or write in appropriate response
If~
12. Cracks, bulging, or erosion on upstream face:
13. Spillway erosion:
14. ' Clogging
Spillway channels:
Diversion ditches:
10. Existing embankment freeboard: approximately
11. _ Increase Decrease in water level: No Change
1. Angle of slope: 2.5:1 upstream, 3:1 downstream
2. 'Seepage (specify location, color, and approximate volume)
At isolated points on embankment slopes:
At natural hillside:
Over widespread areas:
From downstream foundation area:
"Boils" beneath stream or ponded water:
3. Cracks or scarps on crest:
4. Cracks or scarps on slope:
5. Sloughing or bulging on slope:
6. 'Major erosion problems:
7. Surface movements in valley bottom or on hillside:
8. ' Erosion of toe:
9. ` Water impounded against downstream toe:
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
4.0
Yes
Yes
No
No
No
No
No
No
No
No
No
No
No
No
(feet)
(feet)
No
No
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
NIA
N/A
N/A
Yes No N/A
Yes No N/A
'Major adverse changes in these items could cause instability and should be repoded 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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Total = 5.5:1
1