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December 17, 2015 C-1981-028/Keenesburg Strip Mine TNL <br />Inspection Topic Summary <br />NOTE: Y=Inspected N=Not Inspected R=Comments Noted V=Violation Issued NA=Not Applicable <br />Y - Air Resource Protection <br />R - Availability of Records <br />R - Backfill & Grading <br />NA - Excess Spoil and Dev. Waste <br />NA - Explosives <br />N - Fish & Wildlife <br />R - Hydrologic Balance <br />Y - Gen. Compliance With Mine Plan <br />N - Other <br />NA - Processing Waste <br />Y -Roads <br />Y - Reclamation Success <br />N - Revegetation <br />NA - Subsidence <br />NA - Slides and Other Damage <br />Y - Support Facilities On-site <br />Y - Signs and Markers <br />NA - Support Facilities Not On-site <br />NA - Special Categories Of Mining <br />R - Topsoil <br />COMMENTS <br />A complete inspection of the Keenesburg Mine, C-1981-028, operated by Coors Energy Company was conducted <br />on 17 December, 2015 by Tabetha Lynch of the Division of Reclamation, Mining and Safety. The weather was <br />clear and sunny with snow cover at the time of inspection. Danny Kipp with with CEC was present during the <br />inspection. <br />AVAILABILITY OF RECORDS — Rule 5.02.4(1): <br />Records were checked at the on-site office. Details are provided at the end of this report. <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 />Ash backfill in B -pit is shown in the photos below. B -Pit appears stable and well maintained. Backfill <br />material had recently been placed in the long term spoil area. The grade appeared stable. <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 />Sediment Pond No. 2 was not holding water. The banks were snow covered. Water level marker was in <br />place. The dugout pond was not holding water and snow covered. The north perimeter ditch was snow covered <br />and not accessible. There was no water present in B -pit (photo). <br />TOPSOIL — Rule 4.06 <br />Removal 4.06.2; Substitute Materials 4.06.4(4); Storage and Protection 4.06.3; Redistribution 4.06.4: <br />Top sand piles A and B were snow covered but appeared to be well shaped and stable. <br />Number of Partial Inspection this Fiscal Year: 4 <br />Number of Complete Inspections this Fiscal Year: 2 <br />Page 2 of 5 <br />