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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 />g �E{2ocg <br />THICKNER UNDERFLOW HOLDING POND <br />RISER CREST = 6827.0: DEWATER HOLE — 6823.0 <br />OPERATIONAL STATUS AT TIME OF INSPECTION <br />Approximate water level: I ? U <br />Sediment level (% total storage) Aela <br />Outflow (cfs): <br />FEATURES PROBLEM COMMENTS <br />EROSIONAL: YES NO <br />Rills & Gullies on Embankments I� <br />Inadequate Vegetation <br />Outlet Channel Erosion JC <br />Burrows <br />Other <br />V11 - <br />STRUCTURAL: <br />Differential Settling <br />Cracks or Slides <br />Seepage <br />Other <br />APPURTENANT STRUCTURES: <br />V <br />Defective Spillways <br />Dewatering Device Clogged <br />Faulty Gates, Baffles, Pumps `yam <br />Other J� <br />ADDITIONAL COMM <br />MAINTENANCE REQUIRED: <br />INSPECTOR:A2ICk 14fm M a.t j t' <br />i.: document/grtlypnd/Pondinsp.doc <br />