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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 />POND T <br />RISER CREST = 6907.9; LOWEST HOLE = 6904.9 <br />OPERATIONAL STATUS AT TIME OF INSPECTION <br />Approximate water level: -c'' 6 ! 0 <br />Sediment level (% total storage) 5-- -to <br />\ <br />Outflow (cfs): AM ,..Q . <br />FEATURES PROBLEM COMMENTS <br />EROSIONAL: YES NO <br />Rills & Gullies on Embankments L/ <br />Inadequate Vegetation <br />Outlet Channel Erosion <br />Burrows <br />Other <br />STRUCTURAL: <br />Differential Settling <br />Cracks or Slides ` <br />Seepage <br />Other <br />APPURTENANT STRUCTURES: <br />Defective Spillways <br />Dewatering Device Clogged <br />Faulty Gates, Baffles, Pumps <br />Other <br />ADDITIONAL COMMENTS: <br />MAINTENANCE REQUIRED:: M& Aeed l ?I <br />f 9 // C , x ?Y Gr INSPECTOR: <br />i:/document/grtlypnd/Pondinsp.doc