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MONITOR WELL DRILLING AND CONSTRUCTION SUMMARY <br />• NUCLA AND NUCLA EAST MINES <br />Monitor Well Name GW-N18P1(WN0118) Geologic Unit Monitored Dakota Coal Overburden <br />Elevation Ground Level (ft-amsl) .riG73.93 <br />Location: N 597937.9?3 E i.117:~0~.C3 T~_N R ~_W S~ ~ ~ ~ _ <br />Total Drill Depth (ft) 00.0 <br />Total Well Depth (ft) 80.0 <br />Drilling Details <br />Borehole Diameter (in) 6 3/4 Rig Speedstar 1500 <br />Bits Tricone Driller Allan Chiles <br />Drilling Fluid Air and Mud <br />Additional Details <br />Drilling/Construction: Start 06/29/86 Finish 06/29/86 <br />Lithologic Log (Y/N) N <br />Geophysical Log (Y/N) N <br />Construction Details <br />Casing Specs: Blank 4"id PVC sch40 Perforated 0.02" and 0.05" slot <br />Perforated Interval(s) 11.5 - 80.0 <br />Packer and Cement Basket Set At NA <br />Cement From 0.0' To 5.0' <br />Bentonite Slurry From NA To <br />Gravel Pack From 5.0~ Tv 80.0' <br />Additional Details Top 48.5' of screen are 0.05" slot. <br />Development Summary Air/hater and air development for 1 hour; produced around 20 <br />gpm. Cleaned up pretty well but water still had a muddy yellow-brown color. <br />. Comments, Problems <br />15-2-10 Revised 11/01/86 <br />