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OPERATOR: <br />MINE: <br />DATE OF INSPECTION: <br />SEDIMENT POND IDENTIFICATION: <br />REFERENCE ELEVATIONS: <br />COLORADO YAMPA COAL COMPANY <br />FOIDEL CREEK MINE <br />9~zo/a~~ <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: l9 ~ 22-• Y ~ 7 • y1 ~ ~ e ~ a"/ /~° ~ vs~ C rtS f" •~ <br />Sediment level (% total storage) 'C~ Est <br />Outflow (cfs): ~d ~~ <br />FEATURES PROBLEM COMMENTS <br />EROSIONAL: YES NO <br />Rills & Gullies on Embankments ~ <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 /> <br />,/ ~v.,, /~ r., vCl.. <br />N~ t <br />ADDITIONAL COMMENTS: <br />MAINTENANCE REQUIRED: i <br />is/documeaVgrtlypnd/Poadinsp.doc <br />