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MONITOR WELL DRILLING AND CONSTRUCTION SUMMARY <br />• NUCLA AND NUCLA EAST MINES <br />Monitor Well Name GW-N18(WN0018) Geologic Unit Monitored Dakota Coal Overburden <br />Elevation Ground Level (ft-amsl) 5673.25 <br />Location: N 5g7q~A_fi5R E 1,117q(11 _37 T~iN R~r_W S~ g ~ ~ _ <br />Total Drill Depth (ft) 30.0 <br />Total Well Depth (ft) 80.0 <br />Drilling Details <br />Borehole Diameter (in) 6 3/4" <br />Bits Tricone Driller <br />Drilling Fluid Air and Mud <br />Additional Details <br />Rig Speedstar 1500 <br />Drilling/Construction: Start 06/13/86 <br />Lithologic Log (Y/N)~_ <br />Geophysical Log (Y/N) N <br />Finish 06/19/86 <br />Construction Details <br />Casing Specs: Blank 4"id PVC sch40 Perforated 0.02" slot <br />Perforated Interval(s) 10.2' - 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' To 30.0' <br />Additional Details <br />Development Summary Developed with air/water injection and air fora total of 3 <br />hours producing approximately 10 gpm <br />• Comments, Problems <br />15-?-9 Revised 11/01/86 <br />