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May 19, 2015 C-1981-019/Colowyo Coal 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 <br />N - Availability of Records <br />R - Backfill & Grading <br />N - Excess Spoil and Dev. Waste <br />R - Explosives <br />N - Fish & Wildlife <br />R - Hydrologic Balance <br />N - Gen. Compliance With Mine Plan <br />N - Other <br />NA - Processing Waste <br />R - Roads <br />R - Reclamation Success <br />N - Revegetation <br />NA - Subsidence <br />N - Slides and Other Damage <br />N - Support Facilities On-site <br />N -Signs and Markers <br />NA - Support Facilities Not On-site <br />R - Special Categories Of Mining <br />N -Topsoil <br />COMMENTS <br />A partial inspection was conducted by Rob Zuber of DRMS on May 19 and May 20, 2015. This was an OSM <br />Special Focus Inspection to check Colowyo's blasting records, and Rob was joined by Christine Belka and <br />Howard Strand of the Denver Field Division of OSM. <br />The Colowyo employees who participated in the on -the -ground field inspection (May 20th) were Lee Sampson <br />and Kurtis Blunt. Blasting records were checked with Kurtis Blunt and Tracy (Chip) Brown. Martin Stearns and <br />Tony Tennyson participated in office discussions. <br />The weather was clear. The ground was muddy. <br />In the South Taylor Pit there was the following activity: <br />• One drill rig was present near the center of the pit, in G7 overburden. <br />• The 103 dragline was near the south end of the pit moving G7 overburden. <br />• The 114 shovel was idle at the time of the inspection. It was sitting on F2 overburden near the southwest <br />corner of the pit. <br />• The highwall miner was producing E seam coal along the eastern wall; it has advanced to approximately <br />half way along the east side (hole 170). <br />• The 115 excavator, which was sitting in the southwest corner of the pit, has been working on D2 <br />overburden. <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 />Backfilling in the South Taylor Pit is progressing, as shown on the map in this inspection report. <br />In the 2015 reclamation block, no equipment was on site at the time of the inspection. <br />Number of Partial Inspection this Fiscal Year: 8 <br />Number of Complete Inspections this Fiscal Year: 3 <br />Page 2 of 7 <br />