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August 24, 2012 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 N -Roads <br />N - Availability of Records R - Reclamation Success <br />N - Backfill & Grading N - Revegetation <br />R - Excess Spoil and Dev. Waste NA - Subsidence <br />N - Explosives N - Slides and Other Damage <br />N - Fish & Wildlife N - Support Facilities On -site <br />R - Hydrologic Balance N -Signs and Markers <br />R - Gen. Compliance With Mine Plan NA - Support Facilities Not On -site <br />N - Other NA - Special Categories Of Mining <br />NA - Processing Waste N - Topsoil <br />COMMENTS <br />The Colowyo Mine was photographed from an airplane by Harry Ranney on August 22, 2012. The photographs <br />were reviewed by Rob Zuber on August 24, 2012. The sky was somewhat hazy due to <br />Western U.S. wild fires and clouds. <br />EXCESS SPOIL and DEVELOPMENT WASTE — Rule 4.09 E Placement; Drainage Control; Surface <br />Stabilization: <br />West Taylor Fill was inspected. No benches or ditches can be seen in the photographs. Topsoil has been laid on <br />the lower part of the fill. <br />HYDROLOGIC BALANCE - Rule 4.05: <br />Several ponds were inspected in the photographs and no problems were identified with embankments or spillways. <br />The following ponds held significant amounts of water: West Taylor, Wash Bay, Evaporation Ponds, Aeration, <br />Gossard, Loop, and Stoker Siding. The following ponds appeared to be dry or nearly dry: East Taylor, West Pit, <br />and Work Area. <br />The contour ditches in the West Pit area were inspected, and no blowouts or other problems were observed. <br />GENERAL MINE PLAN COMPLANCE: <br />The mine was found to be in general compliance with the permit. <br />RECLAMATION SUCCESS - Rule 4.15, Rule 3: <br />No problems were identified with any observed reclamation. <br />Number of Partial Inspection this Fiscal Year: 3 <br />Number of Complete Inspections this Fiscal Year: 0 <br />Page 2 of 7 <br />