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PEABODY COAL COMPANY - WESTERN DIVISION <br /> MONITOR WELL LITHOLOGIC LOG <br /> Mine: thirla Fact Page -�-/-L- <br /> Monitor Well Name: GW-N31 (287NC) <br /> Geologic Unit Monitored: ()yprhiirrlan <br /> Ground Surface Elevation: (ft-amsi ) <br /> Location: Mine Coordinates UN E <br /> S• , 595597.8 W. 1114828.2 <br /> N <br /> _U,j, _�F J, Tom_ . , R-1fW• S—I <br /> Drilling Date: Start a-1 Fi-p,7 <br /> Finish g_16-fi7 <br /> Drilled By: Winnek <br /> Logged By: Mark Kofflpr <br /> Geophysically Logged By: <br /> Total Depth Drilled: 24 .0 ft <br /> FORMATION RECORD <br /> Depth ft Litho logic description of unconsolidated an <br /> From To consolidated units and water horizons <br /> 0.0 2.9 SANDY CLAY, brown <br /> 17.2 19.3 SANDSTONE, white <br /> 19.3 21.6 SANDSTONE. brown <br /> 2gray <br /> T.D. 24.0 feet <br /> Top of Lower Dakota Coal begins at 27.1 feet. <br /> 15-2-13 Revised 04/11/88 <br />