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October 13, 2020 C-1982-056/Foidel Creek Mine TNL <br />Inspection Topic Summary <br />NOTE: Y=Inspected N=Not Inspected R=Comments Noted V=Violation Issued NA=Not Applicable <br />Y - Air Resource Protection <br />Y - Availability of Records <br />N - Backfill & Grading <br />Y - Excess Spoil and Dev. Waste <br />Y - Explosives <br />Y - Fish & Wildlife <br />R - Hydrologic Balance <br />R - Gen. Compliance With Mine Plan <br />N - Other <br />Y - Processing Waste <br />Y -Roads <br />Y - Reclamation Success <br />Y - Revegetation <br />Y - Subsidence <br />Y - Slides and Other Damage <br />Y - Support Facilities On -site <br />R - Signs and Markers <br />NA - Support Facilities Not On -site <br />NA - Special Categories Of Mining <br />R - Topsoil <br />COMMENTS <br />This was a complete inspection of the Foidel Creek Mine; DRMS Permit No. C-1982-056, operated by <br />Twentymile Coal, LLC. (TC). This inspection was conducted by Tabetha Lynch with the Colorado Division of <br />Reclamation, Mining, and Safety (Division). Dan MacKinnon, Natural Resources Specialist, with with OSMRE - <br />Denver was present during this complete oversight inspection. Miranda Kawcak of TC accompanied the <br />inspection. Overall the weather was clear and windy during the inspection. Items requiring attention from operator <br />are in bold below. <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 />Location <br />Water <br />Dscg <br />source <br />goes to <br />notes <br />6MN Reservoir <br />Y <br />N <br />mine water <br />NW diversion ditch check <br />6MN ventilation <br />pad runoff <br />*broken well <br />Y <br />N <br />shaft site sed pond <br />diversion ditch along the N side <br />Fish Creek Tipple <br />Y <br />Y <br />pond <br />(crushed culvert) <br />N <br />N <br />mine water (flock <br />Fish Creek <br />Fish creek 3 cell pond. , discharge at site 115 <br />Borehole <br />added) <br />triggers sampling at fishcreek <br />downstream. <br />18LT vent shaft <br />N <br />N <br />ponds <br />Number of Partial Inspection this Fiscal Year: 3 <br />Number of Complete Inspections this Fiscal Year: 2 <br />Page 2 of 12 <br />