2017-01-13_HYDROLOGY - C1981025

• Permit No: C1981025
• IBM Index Class Name: Hydrology
• Doc Date: 1/13/2017
• Doc Name: Quarterly Sediment Pond/Impoundment Report
• From: J. E. Stover & Associates, Inc.
• To: DRMS
• Annual Report Year: 2016
• Permit Index Doc Type: Sediment Pond Inspections
• Email Name: CCW
• Email Name: JRS
• Media Type: D
• Archive: No

QUARTERLY POND INSPECTION REPORT
Operator:
IMinrec, Inc. C-1981-025
Quarter:
Fourth 2016
Mine:
lNorth Thompson Creek Mines
Inspection Date:
23 -Dec -16
Pond Identification
Lon T-1
T-2
P-9
Refuse Pond
Type of Pond
Treatment Treatment
Treatment
Sediment
Sediment
Status During Inspection:
Approximate Water Level
Full Full
Full
7503
7421
Sediment ( o total storage)
N/A N/A
N/A
10%
0%
Outflow (gpm)
To T-1 To T-2
5 to 10 gpm
< 5 gpm
0
Features
Problem Problem
Problem
Problem
Problem
Yes/No Yes/No
Yes/No
Yes/No
Yes/No
Erosional
No No
No
No
No
Rills & Gulleys
No No
No
No
No
Inadequate Vegetation
No No
No
No
No
Outlet Channel Erosion
No No
No
No
No
Burrows
No No
No
No
No
Other
Structural
Differential Settling
No No
No
No
No
Cracks or Slides
No No
No
No
No
Seepage
No No
No
No
No
Other
No No
No
No
No
Appurtenant Structures
Defective Spillways
No No
No
No
No
Dewatering Devices Clogged
No No
No
No
No
Faulty Gates, Etc.
No No
No
No
No
Other
No No
No
No
No
Additional Comments
Drawing D-2-5 shows the location of the long pond & ponds T-1, T-2 and P-9.
Discharge from T-2 is being directed
to Pond 9.
Pond 9 Emenercy spillway has be redirected to the ditch to the refuse
pond.
Pond 9, Bottom Elev 7496. Invert
of emergency spillway elev 7503.
Refuse Pond, Bottom Elev 7418.
Invert of emergency spillway elev 7425.7: 1 f..^ 1
Ponds were frozen and snow covered. Long pond was mostly,frpzen.
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Maintenance Required:
None
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Name of Inspector: Stan Muhr
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