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November 18, 2019 C-1981-025/North Thompson Creek Mine RDZ <br /> Inspection Topic Summary <br /> NOTE: Y=Inspected N=Not Inspected R=Comments Noted V=Violation Issued NA=Not Applicable <br /> N -Air Resource Protection Y -Roads <br /> R -Availability of Records Y -Reclamation Success <br /> NA -Backfill&Grading R -Revegetation <br /> NA -Excess Spoil and Dev. Waste Y - Subsidence <br /> NA -Explosives Y - Slides and Other Damage <br /> Y -Fish&Wildlife NA - Support Facilities On-site <br /> R -Hydrologic Balance R - Signs and Markers <br /> Y -Gen. Compliance With Mine Plan NA - Support Facilities Not On-site <br /> N -Other NA - Special Categories Of Mining <br /> NA -Processing Waste Y -Topsoil <br /> COMMENTS <br /> A complete inspection was conducted by Rob Zuber of DBMS on November 18, 2019. The weather was warm, <br /> and the ground was dry. No MINREC, Inc. representative was present. <br /> No cattle were seen onsite. <br /> AVAILABILITY OF RECORDS—Rule 5.02.4(1): <br /> A check at the Garfield County building in Glenwood Springs revealed no problems with the records for the North <br /> Thompson Creek Mine. <br /> HYDROLOGIC BALANCE -Rule 4.05 <br /> 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; <br /> Diversions 4.05.4; Effluent Limits 4.05.2; Ground Water Monitoring 4.05.13; Surface Water Monitoring 4.05.13; <br /> Drainage—Acid and Toxic Materials 4.05.8; Impoundments 4.05.6, 4.05.9; Stream Buffer Zones 4.05.18: <br /> The following ponds were inspected: the Long Pond,Treatment Pond T-1, Treatment Pond T-2, the Polishing <br /> Pond(Pond 9), and the Refuse Pond. No problems were identified with the ponds. All but the Refuse Pond were <br /> discharging, and the water discharging from Pond 9 was relatively clear,with no mineral staining or odor. The <br /> flow through the treatment ponds appeared to be approximately 0.2 cfs at both the upper end(pipe from mine <br /> above the Long Pond) and lower end(out of Pond 9). No problems were identified with the ponds. <br /> No signs of recent impacts from the mine were seen in the creek or on its banks. <br /> Channels appeared to be stable. <br /> Number of Partial Inspection this Fiscal Year: 1 <br /> Number of Complete Inspections this Fiscal Year: 2 <br /> Page 2 of 6 <br />