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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 />THICKNER UNDERFLOW HOLDING POND <br />RISER CREST = 6827.0; DEWATER HOLE = 6823.0 <br />OPERATIONAL STATUS AT TIME OF INSPECTION <br />Approximate water level: BS'I'. 6 P23 /~nQ w ~/CP •vC/ ~ ~ ~C/v~/ f~li.~ ) <br />Sediment level (% total storage) L <br />Outflow (cfs): /l/0 71 ~7 h~ <br />FEATURES PROBLEM COMMENTS <br />EROSIONAL: YES NO <br />Rills & Gullies on Embankments ~ <br /> <br />Inadequate Vegetation <br />Outlet Channel Erosion / SnQ~ ~ lCC <br />Burrows <br />Other <br />STRUCTURAL: <br />Differential Settling <br />Cracks or Slides _~ S.t~} <br />Seepage <br />Other <br />APPURTENANT STRUCTURES: <br />Defective Spillways 1~ <br />Dewatering Device Clogged ~ <br />Faulty Gates, BafBes, Pumps / ~~~ <br />Other <br />ADDITIONAL C~ <br />MAINTENANCE <br /> <br />~- <br />is/document/yrtlypnd/Pondinsp.doc <br />