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;~ MOUNTAIN COAL COMPANY <br />WEST ELK MINE <br />Quarterly Pond Inspection Report <br />Somerset, Gunnison County, Colorado <br />Date: December 22. 1997 <br />Location: West Elk Mine <br />Pond Identification <br />Type of Pond <br />Sediment LeveltnpPro..1 <br />Water Level (Approx.) <br />Outflow <br />Features <br />Problem <br />Comments <br />Erosional: Yes No <br />Rills & Gullies on Embankment / <br />Inadequate Vegetation / <br />Outlet Channel Erosion / <br />Burrows / <br />Other / <br /> <br />Structural: Yes No <br />Differential Settling / <br />Cracks or slides / <br />Seepage / <br />Other / <br /> <br />Appurtenant Structures: Yes No <br />Defective Spillways / <br />De-watering Device Clogged / <br />Faulty Gates, Baffles, Pumps / <br />Other / <br /> <br />Additional Comments: <br />The relining of MB-I South and MB-I North with 60 mil - HDPE has begun and will be completed during Ist Quarter <br />1998. <br />0 RE <br />Orsll <br />Of Pp <br />r ~ SCH,I,j'- , <br />~ <br />I <br />:.. <br />Action Reouired or Needed: <br />45 ~°. <br />~~ <br />None. t"r ;,- <br />I - <br />t <br />~ ` <br />;' <br />I <br />"SO <br />. <br />.. <br />N At. <br />1 <br />~ <br />Quarter: 4th Page I of 2 <br />Inspector: J. Marerave <br />MB-1 South MB-1 North MB-2R MB-3 MB-4 <br />Sediment Sediment Sediment Sediment Sediment <br />0 0 10% 20% 5% <br />0 0 75% 60% <5°io <br /> <br />