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MONITOR WELL DRILLING AND CONSTRUCTION SUMMARY <br /> NUCLA AND NUCLA EAST MINES <br /> Monitor Well Name GW-N17P1(WNO117) Geologic Unit Monitored Dakota Coal <br /> Elevation Ground Level (ft-amsl ) 5672.33 <br /> Location: N 597937. 126 E 1,117885.61 T 46 N R. 15 W S 6 B C C <br /> Total Drill Depth (ft) 108.0 <br /> Total Well Depth (ft) 103.0 <br /> Drilling Details <br /> Borehole Diameter (in) 7 7/8 Rig Speedstar 1500 <br /> Bits TrirnnP Driller Allan Chiles <br /> Drilling Fluid Air and Mud <br /> Additional Details <br /> Drilling/Construction: Start 06/28/36 Finish 06/29/86 <br /> Lithologic Log (Y/N) N <br /> Geophysical Log (Y/N) N <br /> ) <br /> Construction Details <br /> Casing Specs : Blank 4" id PVCsch40 _ Perforated 0.02" slot <br /> Perforated Intervals) 84 2' - 103.01 <br /> Packer and Cement Basket Set At 84.2' <br /> Cement From-approx. 72.2' To 84.2' <br /> Bentonite Slurry From 5.0' To approx. 72 7' <br /> Gravel Pack From NA To <br /> Additional Details Approximately 1 gallon of H,,O came up completion string <br /> while setting cement but no cement found in completion interval next day. <br /> Development Sunnnary Developed well for two hours using air/water injection and <br /> lastly, only air; well produced about 2 qnm <br /> Comments , Problems Top of Upper Dakota Coal at 84.2. Bottom of Lower Dakota Coal <br /> at 107.6' . <br /> D-12 Revised 11/01/86 <br />