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•• <br />~. _ <br />~; <br />1 . <br />OPERATOR: Colorado Yampa Coal Company <br />MINE: Mine #3 <br />DATE OF INSPECTION: AOL]j~5t 5. 1986 <br />AU6 i 4 1966 <br />~ECU-MAT ON DIVISION <br />Mine #3 detention basin - South <br />POND IDENTIFICATION <br />TYPE OF POND <br />Incised - detention basin <br />OPERATIONAL STATUS AT TIME OF INSPECTION <br />Approximate water level: 6672 <br />Sediment level (X total storage): <br />Outflow (cfs): <br />~ FEATURES PROBLEM COMMENTS <br />EROSIONAL: <br />YES NO <br />Rills S Gullies on Embankment X <br />Inadequate Vegetation ~_ <br />Outlet Channel Erosion ~_ <br />Burrows ~_ <br />Other <br />STRUCTURAL: <br />YES NO <br />Differential Settling ~_ <br />Cracks or Slides ~_ <br />S e epage ___._~_ <br />Other <br />APPURTENANT STRUCTURES: <br />YES NO <br />Defective Spillways ~_ <br />Dewatering Device Clogged NIA <br />Faulty Gates, Baffles, Pumps NSA <br />Other <br />ADDITIONAL COMMENTS: Spillway elevation 6674 <br />MAINTENANCE REQUIRED: Detention basin to be converted into a sediment pond <br />with appurtenant structures during the fall of 1986. <br />NAME OF TN4FFf:T(1R r <br />