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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 />?* <br />POND FCT S, ?2' 12- <br />RISER CREST = 55.0; DEWATER HOLE = 51.8 <br />OPERATIONAL STATUS AT TIME OF INSPECTION <br />Approximate water level: U i'l le- N li h) rL "' / (,e-. (4..-zo &,j ce yer <br />Sediment level (% total storage) L S- C, 0 ke 'W j <br />Outflow (cfs): c » !??. G - l) / C'1-._S <br />FEATURES PROBLEM COMMENTS <br />EROSIONAL: YES NO <br />Rills & Gullies on Embankments _ Sjtd vJ <br />Inadequate Vegetation ZY/ <br />Outlet Channel Erosion <br />Burrows <br />Other <br />STRUCTURAL: <br />Differential Settling <br />Cracks or Slides <br />Seepage xx <br />Other <br />APPURTENANT STRUCTURES: <br />Defective Spillways ?G <br />z? <br />Dewatering Device Clogged / <br />Faulty Gates, Baffles, Pumps r <br />Other <br />ADDITIONAL <br />V- <br />MAINTENANCE REQUIRED: A/6 <br />?- • "? ?, r <br />INSPECTOR: / tL i, <br />yL+ ?7TtP?S L? <br />i:/document/grtlypnd/Pondinsp.doc