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March 31, 2021 C-1980-007/West Elk Mine LDS <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 <br />N - Availability of Records <br />N - Backfill & Grading <br />N - Excess Spoil and Dev. Waste <br />N - Explosives <br />N - Fish & Wildlife <br />N - Hydrologic Balance <br />N - Gen. Compliance With Mine Plan <br />N - Other <br />R - Processing Waste <br />N - Roads <br />N - Reclamation Success <br />N - Revegetation <br />N - Subsidence <br />N - Slides and Other Damage <br />R - Support Facilities On -site <br />N - Signs and Markers <br />N - Support Facilities Not On -site <br />N - Special Categories Of Mining <br />N - Topsoil <br />COMMENTS <br />This was an aerial inspection. Brock Bowles flew and photographed the site. The photographs were <br />inspected by Leigh Simmons. <br />PROCESSING WASTE/COAL MINE WASTE PILES — Rule 4.10 and 4.11 <br />Drainage Control; Surface Stabilization; Placement: <br />A temporary coal processing waste pile was still in place on the RPE, which was clear of snow. The pile <br />appeared to be similar in volume and footprint to what was observed in November 2020. <br />The road to the RPEE had been cleared of snow; the active surface of the pile was also clear, but the <br />sloped surfaces were still covered. No machines were working the waste on the pile at the time of the inspection. <br />Both the RPE and the RPEE appeared stable. <br />SUPPORT FACILITIES - Rule 4.04: <br />Photographs of the Mine Ventilation Borehole (MVB) pads and roads show that there was still <br />considerable snow cover on the higher ground at the time of the inspection. Access to the SS pads had been <br />maintained, and vehicle tracks were visible in the snow. The mobile flare was in position on SS1-6, and other <br />equipment and machinery was visible on the SS1-4, -5 and -7 pads. The snow on the SS2 pads and roads was <br />undisturbed. <br />DOCUMENTS RECEIVED <br />N/A <br />OTHER (SPECIFY) <br />N/A <br />Number of Partial Inspection this Fiscal Year: 8 <br />Number of Complete Inspections this Fiscal Year: 3 <br />Page 2 of 14 <br />