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MOUNTAIN COAL COMPANY, LLC <br />WEST ELK MINE <br />Quarterly Pond Inspection Report <br />Somerset, Gunnison County, Colorado <br />Date: 12/31/2018 Quarter: 4th Quarter 2018 Page 1 of 2 <br />Location: West Elk Mine Inspector: Mike Peacock <br />Pond Identification <br />FW -2 (formerly MB -1) <br />MB -3 MB -4 MB -5E <br />of Pond <br />Fresh Water <br />Sediment Sediment Sediment <br />-Type <br />Sediment Level % <br />North - NA South - NA <br /><10% <10% North <10% South <10% <br />Water Level (Approx.) <br />90% 80% <br /><10% 40% 80% 70% <br />Discharge at Time of <br />Inspection (Y/N) <br />NA NA <br />N N N N <br />Maintenance Repairs <br />Features Problem Needed Needed Comments <br />Erosional: <br />Yes <br />No <br />Yes <br />No <br />Yes <br />No <br />Rills & Gullies on <br />Embankment <br />�l <br />Inadequate <br />Vegetation <br />�l <br />Outlet Channel <br />Erosion <br />�l <br />Burrows <br />Other <br />Structural: <br />Yes <br />No <br />Yes <br />No <br />Yes <br />No <br />Differential Settling <br />Cracks or slides <br />See comment below. <br />Seepage <br />�l <br />Other <br />Appurtenant Structures: <br />Yes <br />No <br />Yes <br />No <br />Yes <br />No <br />Defective Spillways <br />�l <br />De -watering Device <br />Clogged <br />�l <br />Faulty Gates, <br />Baffles, Pumps <br />�l <br />Other <br />Additional Comments: <br />Water was recycled from the sediment ponds for use as dust control on roadways and in the Coal Preparation Plant. <br />Conducted P&A work on a few damaged inclinometers surrounding freshwater pond FW -2 and replaced one (118-03). <br />Action Required or Needed: <br />