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Page 2 of 2 <br /> I <br /> MONITOR WELL LITHOLOGIC LOG <br /> Monitor Well Name GW-N13(WN0013) Geologic Unit Monitored Dakota Coal Underburden <br /> Drilling Date 06/10/86 Logged By J.S. Dingman <br /> Geophysically Logged By None Total Depth Drilled (ft)_ 147.0 — <br /> DEPTH (FT) DESCRIPTION AND COMMENTS <br /> 121 .4 - 125 SHALE, blk, carbonaceous <br /> 125 - 134 CLAYSTONE, it grey - It brn, soft <br /> 134 - 141 SILTSTONE, It grey <br /> 141 - 14� SHALE, med grey, so-Ft <br /> Same hole as exploration hole 851-C cored on 03/19/86. <br /> Lithologic log to 95.0 feet obtained from monitor well <br /> GW-1414 iithologic log located approximately 10 feet to <br /> } the south and 0.5 feet higher in elevation. <br /> D-4 Revised 11/01/86 <br />