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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 />R - Backfill & Grading <br />R - Excess Spoil and Dev. Waste <br />N - Explosives <br />R - Fish & Wildlife <br />R - Hydrologic Balance <br />N - Gen. Compliance With Mine Plan <br />N - Other <br />N - Processing Waste <br />Y - Roads <br />Y - Reclamation Success <br />Y - Revegetation <br />N - Subsidence <br />R - Slides and Other Damage <br />Y - Support Facilities On -site <br />Y - Signs and Markers <br />N - Support Facilities Not On -site <br />N - Special Categories Of Mining <br />Y - Topsoil <br />COMNIENTS <br />This was a partial inspection of the Colowyo Mine conducted by Zach Trujillo of Colorado Division of <br />Reclamation, Mining and Safety (Division) on October 21, 2021. Tom Fry and representing Colowyo Coal <br />Company (Colowyo) accompained the inspection. The weather for inspection was clear with dry ground <br />conditions. High temperatures during the inspection were around 60 degrees fahrenheit. <br />BACKFILL and GRADING — Rule 4.14 <br />Contemporaneous Reclamation 4.14.1; Approximate Original Contour 4.14.2; Highwall Elimination 4.14.1(2)(f); <br />Steep Slopes 4.14.2, 4.27; Handling of Acid and Toxic Materials 4.14.3; Stabilization of Rills and Gullies 4.14.6: <br />Contemporaneous backfilling continues in the South Taylor Pit. Spoil is being moved by dragline from the west <br />portion of the pit to the east. <br />Backfilling is occurring along the remaining highwall of the West Pit. Grading is occurring above the West Pit <br />where the old rock crusher pad used to be with spoil being backfilled from above into the West Pit. <br />South Taylor Pit. Regrade above West Pit highwall. <br />EXCESS SPOIL and DEVELOPMENT WASTE — Rule 4.09 <br />Placement; Drainage Control; Surface Stabilization: <br />Spoil from the Collom Pit is being moved from the advancing area west of Little Collom Gulch to the Collom <br />Temporary Spoil Pile by truck and shovel operations. <br />