2015-12-07_HYDROLOGY - C1981010

• Permit No: C1981010
• IBM Index Class Name: Hydrology
• Doc Date: 12/7/2015
• Doc Name: 4th Quarter 2015 Sediment Pond Report
• From: Trapper Mining Inc
• To: DRMS
• Permit Index Doc Type: Sediment Pond Inspections
• Email Name: TNL
• Email Name: DIH
• Media Type: D
• Archive: No

FILE: 118.7
INSPECTOR: Wanda Nickels
DRAINAGE: NO NAME
4th QUARTER 2015
TRAPPER MINING INC.
QUARTERLY SEDIMENT POND INSPECTION REPORT
SIGNATURE:
DATE OF INSPECTION: 11/18/2015
POND IDENTIFICATION
No Name #2
No Name #4
No Name #5
Approximate water level:
100%
100%
100%
Sediment level (% total storage):
30%
Minimal
30%
Outflow (cfs):
< 1 cfs
< 1 cfs
< 1 cfs
Sediment marker (install or replace)
Inplace
Inplace
Inplace
Identification sign (install or replace)
Inplace
Inplace
Inplace
EROSIONAL:
Rills and/or gullies on downstream face.
NO
NO
NO
Rills and/or gullies on upstream face.
NO
NO
NO
Inadequate vegetation.
NO
NO
NO
Outlet channel erosion.
NO
NO
NO
Burrows.
NO
NO
NO
Erosion of toe.
NO
NO
NO
Water impounded against downstream toe.
NO
NO
NO
Other.
STRUCTURAL:
Differential settling.
NO
NO
NO
Cracks, slides, or scarps.
NO
NO
NO
Seepage (specify location, color, value).
NO
NO
NO
Defective spillways.
NO
NO
NO
Other.
APPURTENANT STRUCTURES:
Defective spillways.
NO
NO
NO
Dewatering device clogged.
NO
NO
N/A
Cracking or crushing of pipes.
NO
NO
N/A
Other.
COMMENTS:
#2: use riser/siphon tube as sediment marker; siphon top = 66%, bottom = 50%.
#4: use riser/siphon tube as sediment marker; siphon top = 75%, bottom = 60%.
#5: 60% level = top of post - 4.5'.
No problems noted.