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May 26, 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 />R - Excess Spoil and Dev. Waste <br />N - Explosives <br />N - Fish & Wildlife <br />R - Hydrologic Balance <br />R - Gen. Compliance With Mine Plan <br />N - Other <br />NA - Processing Waste <br />N -Roads <br />R -Reclamation Success <br />N - Revegetation <br />NA - Subsidence <br />R - Slides and Other Damage <br />N - Support Facilities On-site <br />N -Signs and Markers <br />NA - Support Facilities Not On-site <br />N - Special Categories Of Mining <br />R - Topsoil <br />COMMENTS <br />Aerial photographs of the Colowyo site were taken by Harry Ranney on May 26, 2015. Rob Zuber reviewed the <br />photographs and compiled this report on May 29th. <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 />Recent grading has been performed in the East Taylor Pond watershed as shown in one of the photographs <br />in this report. <br />EXCESS SPOIL and DEVELOPMENT WASTE — Rule 4.09 <br />Placement; Drainage Control; Surface Stabilization: <br />The West Taylor Fill was inspected. No erosion or other problems were identified. <br />HYDROLOGIC BALANCE - Rule 4.05 <br />Drainage Control 4.05.1, 4.05.2, 4.05.3; Siltation Structures 4.05.5, 4.05.6; Discharge Structures 4.05.7, 4.05.10; <br />Diversions 4.05.4; Effluent Limits 4.05.2; Ground Water Monitoring 4.05.13; Surface Water Monitoring 4.05.13; <br />Drainage — Acid and Toxic Materials 4.05.8; Impoundments 4.05.6, 4.05.9; Stream Buffer Zones 4.05.18: <br />In the aerial photographs ponds in the East Pit reclamation area (EPI, EP2, NTEP1, PD1, and PD2) were <br />inspected. In these photographs, the ponds are holding a large amount of water due to significant precipitation. <br />Embankments look stable and no other problems were seen. <br />Number of Partial Inspection this Fiscal Year: 9 <br />Number of Complete Inspections this Fiscal Year: 3 <br />Page 2 of 7 <br />