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November 16,2022 C-1981-019/Colowyo Coal Mine ZTT <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 /> R -Backfill&Grading N -Revegetation <br /> R -Excess Spoil and Dev. Waste N - Subsidence <br /> Y -Explosives N - Slides and Other Damage <br /> Y -Fish&Wildlife N - Support Facilities On-site <br /> R -Hydrologic Balance N - Signs and Markers <br /> N -Gen. Compliance With Mine Plan N - Support Facilities Not On-site <br /> N -Other N - Special Categories Of Mining <br /> N -Processing Waste R -Topsoil <br /> CONVOENTS <br /> This was a complete inspection by the Coloroado Division of Reclamation,Mining and Safety(Division)of the <br /> Colowyo Mine conducted by Zach Trujillo of the Division on November 16,2022.Tom Fry and Tony Tennyson <br /> representing Colowyo Coal Company(Colowyo)accompained the inspection. The weather during the inspection <br /> was clear with snow covered and muddy ground conditions.Temperatures during the inspection were around 30 <br /> degrees fahrenheit. Due to adverse ground conditions,access was limited to certain areas of the site. <br /> AVAILABILITY OF RECORDS—Rule 5.02.4(1): <br /> All records are kept on site at the Colowyo Mine's office building. Please see the Division's Availability of <br /> Records checklist at the end of this inspection report for more detailed information. <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 /> Backfill in the West Pit was inspected. There was no activity during the inspection.Additional excess spoil <br /> continues to be removed from the western portion of the West Pit from what will eventually conform to the Taylor <br /> Ditch. The southern end appears to have been final graded to post-minig topography. <br /> Number of Partial Inspection this Fiscal Year: 3 <br /> Number of Complete Inspections this Fiscal Year: 2 <br /> Page 2 of 8 <br />