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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 />~~o L <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: Cs~ - L G ~ ~ ~ ( ~UW <br />fl -. <br />Sedimentlevel(% total storage) G~nn/~ <br />Outflow (cfs): /lfd r/U v~/ <br />FEATURES PROBLEM COMMENTS <br />EROSIONAL: <br />STRUCTURAL: <br />Rills & Gullies on Embankments <br />Inadequate Vegetation <br />Outlet Channel Erosion <br />Burrows <br />Other <br />Differential Settling <br />Cracks or SBdes <br />Seepage <br />Other <br />APPURTENANT STRUCTURES: <br />Defective Spillways <br />Dewatering Device Clogged <br />Faulty Gates, Baffles, Pumps <br />Other <br />YES NO/ <br />/'/ <br />V <br />~/ <br />v <br />ADDITIONAL COMMENTS: Sno ~.r !ti pUY~ . CIn2c ~~ h.c „ /cS !.; S~J /. <br />MAINTENANCE REQUIRED: u <br />INSPECTOR:_~. ~ _ W ~ /'l 1 fC a ~ <br />is/documen Vgrtlypnd/Pondinsp.doc <br />