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MONITOR WELL DRILLING AND CONSTRUCTI(IN SUMMITRY <br />NUCLA AND NUCLA EAST MINES <br />Monitor Well Name GW-N17P1(WN0117) Geologic Unit MonitoreriDakota Coal <br />Elevation Ground Level (ft-anisl) 5672.33 <br />Location: N 597937.126 E 1,117335.61 T 46 N R 15 W `.; 6 B C C_ <br />total Orill Depth (ft) 108.0 <br />Total 'dell Depth (ft) 103.0 <br />Drilling Details <br />Borehole Diameter (in) 7 7/8 <br />Bits 7rirnna Driller <br />Drilling Fluid Air and htud <br />Additional Details <br />Allan Chiles <br />• <br />Drilling/Construction: Start 06/28/86 Finish 06/29/86 <br />Litho logic Log (Y/N)~_ <br />Geophysical Log (Y/N)~_ • <br />Construction Details <br />Casing Specs: Blank 4" id PVCsch40 _ Perforated_0.02" slot <br />Perforated Interval(s) 84.2' - 103.0' ___ <br />Packer and Cement Basket Set At g4.2' <br />Cement From a rox. 72.2' To 84.2' <br />Bentonite Slurry From 5.0' To_ a ro>:. 72.7' ___ <br />Gravel Pack Frurn NA Tu_ _ <br />Additional Details Approximately 1 gallon of H2O came up completion strinr <br />while setting cement but no cement found in corn lp etiorr interval next d~,___ <br />Development Sunauary_ Developed well for two hours usin air water in,jection_and <br />lastly, only air; wel] produced about 2 npm. <br />Connnents, Problems Top of <br />) at 107.6'. <br />Riq Speedstar 150(1 <br />per Dakota Coal at 84.2 <br />D-12 Revised 11/01/86 <br />