2014-07-22_HYDROLOGY - C1981025

• Permit No: C1981025
• IBM Index Class Name: Hydrology
• Doc Date: 7/22/2014
• Doc Name: 2nd Quarter 2014 Quarterly Pond Inspection Report
• From: J.E. Stover & Associates, Inc
• To: DRMS
• Permit Index Doc Type: Sediment Pond Inspections
• Email Name: BFB
• Media Type: D
• Archive: No

QUARTERLY POND INSPECTION REPORT
Operator:
Minrec, Inc. C- 1981 -025
Quarter: Second 2014
Mine:
North Thompson Creek Mines
Inspection Date: 25-May-14
Pond Identification
Lon T -1
T -2
P -9
Type of Pond
Treatment Treatment
Treatment
Sediment
Status During Inspection:
Approximate Water Level
Full Full
Full
7599
Sediment (% total storage)
N/A N/A
N/A
10%
Outflow (gpm)
To T -1 To T -2
20 gpm
0 gpm
To Refuse Pond
Features
Problem
Problem
Problem
Problem
Yes /No
Yes /No
Yes /No
Yes /No
Erosional
No
No
No
No
Rills & Gulleys
No
No
No
No
Inadequate Vegetation
No
No
No
No
Outlet Channel Erosion
No
No
No
No
Burrows
No
No
No
No
Other
Structural
Differential Settling
No No
No
No
Cracks or Slides
No No
No
No
Seepage
No No
No
No
Other
No No
No
No
Appurtenant Structures
Defective Spillways
No No
No
No
Dewatering Devices Clogged
No No
No
No
Faulty Gates, Etc.
No No
No
No
Other
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.
Refuse Pond will be inspected beginning 3rd quarter
2014.
Discharge from T -2 is being directed to Refuse Pond.
Pond 9 Emenercy spillway has be
redirected to the ditch to the refuse pond.
Maintenance Required:
Name of Inspector: Stan Muhr
Pond 9, Bottom Elev 7496. Invert of emergency spillway elev 7503 'rl �
Refuse Pond, Bottom Elev 7418. Invert of emergency spillway e
None
O
O
J. E. Stover �Ffs°O�° v: Pt•
Colorado P. E.1