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M110UNTAIN COAL COMPANY <br />WEST ELK MINE <br />Quarterly Pond Inspection Report <br />Somerset, Gunnison County, Colorado <br />Date: March 30, 1998 <br />Location: West Elk Mine <br />Pond Identification <br />Type of Pond <br />Sediment LeveltnPP~o<.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 /> <br />Seepage <br />/ ~~~~~~ <br />~ i~1 <br />Other / ,~ ,,-,FnO RI?~~ 1) <br /> <br />Appurtenant Structures: Yes No i 1~' ?; `r: ~ <br />' <br />Defective Spillways / ~ <br />~ <br />• <br /> <br />De-watering Device Clogged <br />/ O~1 ,(l <br />C •` j/~.~/ <br />J <br />Faulty Gates <br />Baffles <br />Pumps / ..., <br />:o <br />•. <br />. ;., <br />~I <br />. <br />, _ <br />, , <br />. <br />. <br />e. <br />Other `~ .,,° <br />~ E (~.4~ ~fVl.L E ;'•E <br /> a <br />z ~, `,L'``4v <br />Additional Comments: <br />MB-1 was lined with HDPE (both cells) during the first quarter and MB-I (north) is being utilized as the freshwater <br />pond until FW-I is lined. MB-3 will be cleaned 2nd quarter. MB-4 will be cleaned 2nd quarter. <br />Action Required or Needed: <br />None. <br />Quarter: 1st. 1998 Page 1 of 2 <br />Inspector: H. Barbe <br />MB-I South MB-I North MB-2R MB-3 MB-4 <br />Sediment Fresh Water Sediment Sediment Sediment <br />0 0 20% 40% 60% <br />40°io 60% 40°io 40% <5% <br />--- 750 gpm --- --- --- <br />