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February 11,2020 C-1981-028/Keenesburg Strip Mine RDZ <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 N -Roads <br /> N -Availability of Records R -Reclamation Success <br /> NA -Backfill& Grading N -Revegetation <br /> NA -Excess Spoil and Dev. Waste NA - Subsidence <br /> NA -Explosives Y - Slides and Other Damage <br /> N -Fish&Wildlife R - Support Facilities On-site <br /> R -Hydrologic Balance N - Signs and Markers <br /> Y - Gen. Compliance With Mine Plan NA - Support Facilities Not On-site <br /> N - Other NA - Special Categories Of Mining <br /> NA -Processing Waste R -Topsoil <br /> COMMENTS <br /> An aerial inspection was conducted by Rob Zuber and Brock Bowles of DRMS. Brock took aerial photos on <br /> February 1 lth,and Rob reviewed them on the 12th.The weather was mostly clear. The ground was partially <br /> covered with snow. <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 /> Small amounts of snow were observed in the Dugout Pond and Sediment Pond#2.Neither pond appeared to be <br /> discharging during the inspection.There were no signs that they had discharged recently.No problems were <br /> observed with embankments or other aspects of the two ponds. <br /> RECLAMATION SUCCESS -Rule 4.15,Rule 3: <br /> No erosion or other problems were seen within any fully reclaimed parcels or at the areas undergoing reclamation. <br /> This latter category includes roads,B Pit and the Long Term Spoil Area. <br /> SUPPORT FACILITIES - Rule 4.04: <br /> No problems were seen at the facilities area. <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 /> No erosion or other problems were seen at the remaining topsand piles south of the facility area(A-1 and B-1). <br /> Number of Partial Inspection this Fiscal Year: 5 <br /> Number of Complete Inspections this Fiscal Year: 2 <br /> Page 2 of 5 <br />