_INSPECTION - C1981025 ‎(8)‎

• Permit No: C1981025
• IBM Index Class Name: Inspection
• Doc Name: Inspection Report
• From: DRMS
• To: Jim Stover
• Inspection Date: 10/17/2012
• Email Name: BFB
• Email Name: SB1
• Media Type: D
• Archive: No

October 17,2012 C-1981-025/North Thompson Creek Mine BFB
Inspection Topic Summary
NOTE: Y=Inspected N=Not Inspected R=Comments Noted V=Violation Issued NA=Not Applicable
N -Air Resource Protection R -Roads
R -Availability of Records N -Reclamation Success
N -Backfill& Grading N -Revegetation
N -Excess Spoil and Dev.Waste N - Subsidence
N -Explosives N - Slides and Other Damage
N -Fish&Wildlife N - Support Facilities On-site
R -Hydrologic Balance N - Signs and Markers
N -Gen. Compliance With Mine Plan N - Support Facilities Not On-site
N -Other N - Special Categories Of Mining
N -Processing Waste N -Topsoil
COMMENTS
This was a complete inspection of the North Thompson Creek Mine conducted by Sandra Brown, Susan
Burgmaier and Brock Bowles of the Colorado Division of Reclamation,Mining and Safety. No representative
from MINREC, Inc.was present. Weather conditions were sunny and warm and the ground was dry.
AVAILABILITY OF RECORDS—Rule 5.02.4(1):
The records were checked in the Records Room at the Garfield County Courthouse in Glenwood Springs,
Colorado. The following items need to be updated: a)Quarterly Pond Inspection for the 2nd and 3rd quarter,b)
the 2nd and 3rd quarter 2012 inspection reports, 3)insurance document and 4) SL-6 Findings. See the availability
of records form at the end of this inspection report for more detailed information.
HYDROLOGIC BALANCE -Rule 4.05
Drainage Control 4.05.1,4.05.2,4.05.3; Siltation Structures 4.05.5,4.05.6; Discharge Structures 4.05.7,4.05.10;
Diversions 4.05.4; Effluent Limits 4.05.2; Ground Water Monitoring 4.05.13; Surface Water Monitoring 4.05.13;
Drainage —Acid and Toxic Materials 4.05.8; Impoundments 4.05.6,4.05.9; Stream Buffer Zones 4.05.18:
The water discharge from Portals#1 and 93 was clear. The long pond had standing water and appeared to
be functioning properly (photo 1). Ponds T1 and T2 appeared to be working correctly and the berm appeared to be
stable. The water was directed from Pond T2 to Pond P9,which was full.
Water was flowing from P9 through a ditch constructed to the east onto the sagebrush landscape (photo 2) and not
through the approved outfall. This ditch is not shown on the `No. 1 Mine Seepage Control and Treatment Pond
Plan', Drawing D-2-5. Outfall 001A is the only approved discharge point in the North Thompson Creek Permit
(C-1981-025). According to Drawing D-4-6,the principle spillway for pond P9 is a 3-inch diameter pipe that is
inside an existing 18-inch culvert(blocked)which is buried below the emergency spillway. The primary and
emergency spillways both flow directly from P9 toward North Thompson Creek but neither one was discharging.
Jim Stover(MINREC)was asked about the ditch flowing from P9 but he was not aware of this discharge. He will
contact the landowner and have it fixed.
Number of Partial Inspection this Fiscal Year: 1
Number of Complete Inspections this Fiscal Year: 3
Page 2 of 5