_INSPECTION - C1981025 ‎(4)‎

• Permit No: C1981025
• IBM Index Class Name: Inspection
• Doc Name: Inspection Report
• From: DRMS
• To: Jim Stover
• Inspection Date: 7/8/2013
• Email Name: BFB
• Email Name: SB1
• Email Name: DAB
• Media Type: D
• Archive: No

July 8, 2013 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 R -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 R - 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 Brock Bowles and David Berry
of the Colorado Division Reclamation, Mining and Safety. Stan Muhr of MINREC, Inc. was also present for the
inspection. The landowners were not in attendance for this inspection. The weather conditions were sunny and
warm. The ground conditions were dry.
AVAILABILITY OF RECORDS —Rule 5.02.4(1):
All the necessary records were available at the Garfield County Court House in Glenwood Springs. See
the Availability of Records form at the end of this inspection report.
HYDROLOGIC BALANCE -Rule 4.05
Drainage Control 4.05.1, 4.05.2, 4.053; 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:
Both the 41 and 43 portals were discharging into the long pond and the water was clear. The long pond
berm was well vegetated and appeared to be stable. Water was flowing into the T1 pond from the long pond. The
open ditch between the T1 and T2 ponds was well vegetated and appeared to be stable (photo 1). The water was
directed from T2 to the P9 pond (photo 2)which contained water but was not discharging. The pipes that were in
the open ditch between Pond T2 and Outfall 001 during the last inspection had been removed (photo 3). The
discharge pipe leading from Outfall 001,which was obstructed during the last inspection,had been cleaned.
The electric pump that pumps water from Pond T2 to the off-permit stock tank had been removed. The emergency
spillway was still directed to the refuse pile pond ditch(see inspection report 6/18/2013). A revision to the permit
and ditch configuration will be discussed with the operator to accommodate the landowners needs.
Water was noted seeping from the 36-inch air shaft access culvert (photo 4). This culvert is located on the south
side of North Thompson Creek by Portal 41. Standing water was in the ditch leading from the culvert to North
Thompson Creek. The culvert has a locked grate to prevent access. The Division recommends that the water
seeping out of the culvert be tested to determine if treatment is necessary. The water should be tested for the
parameters outlined in the current NPDES permit.
Number of Partial Inspection this Fiscal Year: 0
Number of Complete Inspections this Fiscal Year: 1
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