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QUARTERLY POND INSPECTION REPORT <br />OPERATOR: HG Coal Comaany <br />• MINE: Hayden Gulch Mine <br />DATE OF INSPECTION: Mazch 17, 1998 <br />POND IDENTIFICATION: Pond HG8 (Outfall 004) <br />TYPE OF POND: Sedimen[ <br />OPERATIONAL STATUS AT TIME OF INSPECTION <br />Approximate Water Level: 7,385.0 feet (water level ' 1 to 2" below [op of 4" decant orifice- <br />Sediment Level (% total storage): not measwed, last surveyed August 1997_ <br />Outflow (cfs): 0.09 cfs (40 gpm) <br />• <br />FEATURE8 PROB LEM COMMENTS <br />EROSIONAL: YES NO <br />Rills & Gullies on Embankment x <br />Inade uete Va elation ^ <br />Outlet Channel Erosion x <br />Burrows x <br />Other x <br />STRUCTURAL: YES NO <br />Differential Settlin x <br />Cracks or Slides x <br />See a e x <br />Other x <br />APPURTENANT STRUCTURES: YES NO <br />Defective S illwa s x <br />Dewaterin Device Clo ed x <br />Foul Gates, Baffles, Pum s x <br />Other x <br />ADDITIONAL COMMENTS: <br />• pond snow end ice covered -winter conditions <br />• inslopea end embankment covered with snow, 95% + of watershed still holding snow <br />• NPDES samples collected 1/22198, 2/27/98 and 3/17/98 <br />L L,,,,~ rr.~~ M' iI1 Y <br />NAME OF INSPECTOR: <br />• Under the Direction of John ellicer, P.E. No. 31222 <br />• ~IrnQ..e.y M1"lly.m~ Rqw <br />/11/Y)nl <br />