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OPERATOR: <br />MINE: <br />DATE OF INSPECTION: <br />SEDIMENT POND IDENTIFICATION: <br />REFERENCE ELEVATIONS: <br />TWENTYMILE COAL COMPANY <br />FOIDEL CREEK MINE <br />6/2`~Q7 <br />THICKNER UNDERFLOW HOLDING POND <br />RISER CREST = 6527.0: DEWATER HOLE = 6823.0 <br />OPERATIONAL STATUS AT TIME OF INSPECTION <br />Approximate water level: <br />Sediment level (% total storage) <br />Outflow (cfs): <br />~(,k23. <br />v <br />FEATURES PROBLEM COMMENTS <br />EROSIONAL: YES NO <br />Rills & Gullies on Embankments '~ <br />Inadequate Vegetation ~ <br />Outlet Channel Erosion // <br />Burrows <br />Other <br />STRUCTURAL: <br />Differential Settling / <br />Cracks or Slides '~ <br />Seepage r~ <br />Other <br />APPURTENANT STRUCTURES: <br />Defective Spillways ~ <br />Dewatering Device Clogged / / <br />Faulty Gates, Baffles, Pumps _/ <br />Other <br />ADDITIONAL COMMENTS: <br />MAINTENANCE <br />is/document/grtlypnd/Pondinsp.dac <br />