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MONITOR WELL DRILLING AND CONSTRUCTION SUMMARY <br /> NUCLA AND NUCLA EAST MINES <br /> Monitor Well Name GW-N14 (WN0014) Geologic Unit Monitored Dakota Coal <br /> Elevation Ground Level (ft-amsl ) 5710.82 <br /> Location: N 601954. 173 E 1 , 116090.57T 47 N R 16 W S 36 D A C <br /> Total Drill Depth (ft) 95.0 <br /> Total Well Depth (ft) 95.0 <br /> Drilling Details <br /> Borehole Diameter ( in) 7 7/8 to 79.6; 6 3/4 to 95.0 Rig Speedstar 1500 <br /> Bits Tricone Driller Allan Chiles <br /> Drilling Fluid Air and Mud <br /> Additional Details <br /> Drilling/Construction: Start 06/14/86 Finish 06/16/86 <br /> Lithologic Log (Y/N) N <br /> Geophysical Log (Y/N) N <br /> Construction Details <br /> Casing Specs: Blank 4" id PVC sch 40 Perforated 0.02" slot <br /> Perforated Intervals) 80. 1 ' - 95.0' <br /> Packer and Cement Basket Set At 80. 1 ' <br /> Cement From 74.0' To 80. 1 ' <br /> Bentonite Slurry From 5.0' To 74.0' <br /> Gravel Pack From NA To <br /> Additional Details Top five feet of annulus sealed to ground surface with <br /> cement <br /> Development Summary Airlift while injecting with water and then only air for <br /> 1 hour; cleaned up and made approximately 0. 25 gpm <br /> Comments , Problems Top of Upper Dakota Coal @ 81 .0 feet. Top of Lower Dakota <br /> Coal @ 89. 1 . Still in coal at 95.0 feet. <br /> 15-2-20 Revised 11 /01/86 <br />