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Page 2 of 2 <br /> MONITOR WELL LITHOLOGIC LOG <br /> Monitor Well Name GW-N16(WN0016) Geologic Unit Monitored Dakota Coal Underburden <br /> Drilling Date 07/17/86 Logged By J.S. Dingman <br /> Geophysically Logged By None Total Depth Drilled (ft) 158.0 _ <br /> DEPTH (FT) DESCRIPTION AND COMMENTS <br /> is located 3.5 feet lower than in hole 879-C. <br /> 102.0 - 108.3 COAL (Lower Dakota) <br /> 108.3 - 109.2 SHALE and SILTSTONE, It grey <br /> 109.2 - 114. 1 SILTSTONE, It grey - white <br /> 114. 1 - 114.6 SHALE, soft, grey <br /> 114.6 - 118.5 SHALE, slty, med grey <br /> 118.5 - 120.0 COAL (Nucla) <br /> 120.0 - 120.7 SILTSTONE, It brn <br /> 120.7 - 143.0 SHALE, dk grey - It grey, intbdd w/SILTSTONE, soft to hd <br /> 143.0 - 154.8 CLAYSTONE, grey, soft <br /> 154.8 - 158.0 SILTSTONE, It grey, hd <br /> T.D. <br /> D-9 Revised 11/01/86 <br />