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<br />MONITOR WELL DRILLING AND CONSTRUCTION .`iUh1t4ARY <br />NUCLA AND NUCLA EAST MINES <br />ttonitor Well Name GW-N21(WN0021) Geologic Unit hlunitored Dakota Coal Overburden <br />Elevation Gruund Level (ft-anisl) 5740.94 <br />Location: N 600392.383 E 1,119289.39 T 46 N R 15 W S 6 B A A <br />Total Drill Depth (ft) 56.0 <br />Total Well Deptl+ (ft) 56.0 <br />Drilling Details <br />Borehole Diameter (in) F, 3/4" <br />Bits Trirone Driller <br />Urilling Fluid Air and Mud <br />Additional Details <br />• <br />Riy~:edstar 1500 <br /> <br />Drilling/Construction: Start 07/09/86 <br />LitY+ologic Log (Y/N)_~_ <br />Geophysical Log (Y/N) N <br />Finish 07/09/E6 <br />Constructio~+ Uetails <br />Casing Specs: Blank 4"id PVC sch40 Perforated_C1.05" slot <br />Perforated Interval(s) 26.0' - 56.0' <br />Packer and Cement Basket Set At NA _y <br />Cement Frum 0.0 To 5.0' <br />Bentonite Slurry From NA To_ <br />Gravel Pack From 5.0' To 56.0' <br />Additional Details <br />Development Sunmiary Air/water and air injection for an hour; produced about 10 gom. <br /> <br />Counnents, Problems <br />D-18 <br />Revised 11/01/86 <br />• <br />C <br />J <br />