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MOUNTAIN COAL COMPANY, LLC <br />WEST ELK MINE <br />Quarterly Stockpile and/or Site Inspection Report <br />Somerset, Gunnison County, Colorado <br />Date: 012/28/17 <br />Location: Material Storage Bench, Topsoil Stockpile 45 <br />FPSi t11 rPS <br />Problem? Maintenance? <br />Quarter: 4th Quarter 2017 Page 4 of 10 <br />Inspector: Mike Peacock <br />Repairs? Comment <br />Erosion: <br />Yes No <br />Yes No <br />Yes No <br />Rills & Gullies <br />Vegetation <br />Other <br />Drainage: <br />Yes No <br />Yes No <br />Yes No <br />Ditches & Channels <br />Ongoing maintenance as needed <br />Berms <br />Linings <br />Temporary <br />Structures <br />Culverts <br />Other <br />Structural: <br />Yes No <br />Yes No <br />Yes No <br />Sideslopes & <br />Stability <br />See comment below. <br />Cracks or settling <br />See comment below. <br />Compaction <br />NA <br />NA <br />NA <br />Seepage <br />Underdrains <br />NA <br />NA <br />NA <br />Monitoring - Survey <br />NA <br />NA <br />NA <br />Monitoring - Visual <br />�l <br />Other <br />Reclamation: <br />Yes No <br />Yes No <br />Yes No <br />Seedbed Material <br />Subsoil <br />Vegetation <br />Mulch <br />Other <br />General Compliance & <br />Miscellaneous: <br />Yes No <br />Yes No <br />Yes No <br />Signs & Markers <br />Spontaneous <br />Combustion <br />NA <br />NA <br />NA <br />Roads <br />Other <br />Additional Comments: The surface slump on the north outslope of the MSB has been stabilized with the addition of a rock <br />buttress at the toe and unloading and sealing the surface cracks in the top portion of the slump area. A culvert was added to <br />divert ditch flows in a culvert under the road upstream of the slump and away from the toe. Monitoring continues. <br />