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
4th QUARTER 2015
TRAPPER MINING INC.
QUARTERLY SEDIMENT POND INSPECTION REPORT
INSPECTOR: Wanda Nickels SIGNATURE:�,
DRAINAGE: JOHNSON GULCH DATE OF INSPECTION: 11/19/2015
POND IDENTIFICATION
Johnson #6
Johnson #711
Johnson #811
Johnson #911
Johnson #10R
Approximate water level:
100%
100%
100%
100%
100%
Sediment level (% total storage):
Minimal
25%
25%
Minimal
25%
Outflow (cfs):
< 1 cfs
< 1 cfs
< 1 cfs
< 1 cfs
< 1 cfs
Sediment marker (install or replace)
Inplace
Underwater
Underwater
Underwater
Underwater
Identification sign (install or replace)
Inplace
Inplace
Inplace
Inplace
Inplace
EROSIONAL:
Rills and/or gullies on downstream face.
NO
NO
NO
NO
NO
Rills and/or gullies on upstream face.
NO
NO
NO
NO
NO
Inadequate vegetation.
NO
NO
NO
NO
NO
Outlet channel erosion.
NO
NO
NO
NO
NO
Burrows.
YES
NO
NO
YES
NO
Erosion of toe.
NO
NO
NO
NO
NO
Water impounded against downstream toe.
NO
NO
NO
NO
NO
Other.
STRUCTURAL:
Differential settling.
NO
NO
NO
NO
NO
Cracks, slides, or scarps.
NO
NO
NO
NO
NO
Seepage (specify location, color, value).
NO
NO
NO
NO
NO
Defective spillways.
NO
NO
NO
NO
NO
Other.
---
---
APPURTENANT STRUCTURES:
Defective spillways.
NO
NO
NO
NO
NO
Dewatering device clogged.
NO
N/A
N/A
N/A
N/A
Cracking or crushing of pipes.
NO
N/A
N/A
N/A
N/A
Other.
---
'
COMMENTS:
#6: use riser/siphon tube as sediment marker; siphon top = 90%,
No problems noted.
top -
1.5' = 60%.
: NMU 11'.