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14 September, 2017 C-1981-028/Keenesburg Strip Mine RAR <br />Inspection Topic Summary <br />NOTE: Y=Inspected N=Not Inspected <br />V=Violation Issued NA=Not Applicable <br />R - Air Resource Protection Y <br />N - Availability of Records R <br />R - Backfill & Grading N <br />NA - Excess Spoil and Dev. Waste Y <br />NA - Explosives Y <br />Y - Fish & Wildlife <br />N <br />R - Hydrologic Balance <br />R <br />R - Gen. Compliance With Mine Plan <br />N <br />N - Other <br />N <br />NA - Processing Waste <br />Y <br />R=Comments Noted <br />- Roads <br />- Reclamation Success <br />- Revegetation <br />- Subsidence <br />- Slides and Other Damage <br />- Support Facilities On-site <br />- Signs and Markers <br />- Support Facilities Not On-site <br />- Special Categories Of Mining <br />- Topsoil <br />COMMENTS <br />This was a partial inspection for the SL9 bond release requests at the Keenesburg Strip Mine, operated <br />by Coors Energy Co. The inspection was conducted by me, Robin Reilley, of the DRMS on 14 <br />September 2017. Danny Kipp of Coors Energy CO., was present during the inspection. Skies were clear <br />and temperatures reached 90 degrees F. The last precipitation was recorded in early August. The <br />Dugout and Sediment Pond #2 held water; about 2-3 feet in the Sediment pond. The Dougout Pond was <br />covered with a dense growth of cattails. <br />This inspection consisted of collecting elevation data in order to validate approximate original contour <br />for the two parcels and two drainages for a total of 19.4 acres in Area 33 (12.5 acres) and, Area 34 (6.9 <br />acres). <br />INSPECTION: <br />GENERAL MINE PLAN COMPLIANCE: <br />o No earth was being moved at the time of inspection. <br />o No hydrologic or air quality issues were observed at time of inspection. <br />o Areas inspected appeared stable, with vegetation establishing and positive drainage. <br />BACKFILLING and GRADING — Rule 4.14 <br />To check the as -built reclamation in SL9 areas, with respect to meeting approximate original <br />contour, 43 points were collected with GPS technology (GNSS Bad Elf surveyor, connected via <br />blue tooth to Apple iPhone 6, ArcCollector and ESRI 10.3.1 software). Map 1 below, shows the <br />locations of data points, collected in areas 33 and 34. <br />Number of Partial Inspection this Fiscal Year: 3 <br />Number of Complete Inspections this Fiscal Year: 1 <br />Page 2 of 4 <br />