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t40NITOR WELL DRILLING AND CONSTRUCTION SUP1t4ARY <br />• <br />lionitor Well Name GW-N <br />Elevation Gruund Level <br />Location: N 60474.97 <br />Total Drill Depth (ft) <br />Total Weli Deptli (ft) <br />Drilling Details <br />NUCLA AND NUCLA EAST MINES <br />23(WM0023) Geologic Unit Monitored Overburden,Dakota Coa 1, and <br />(ft-amsl) 5744.57 Underburden <br />L E~~117074.12 T47 N R 16 W S36 A A D <br />31.0 <br />29 . fi <br />Borehole Diameter (in) 5 1/4 to 14.0'; 4 7/8 to 31.RiySpeedstar 1500 <br />Bits Tricone and Core Driller Allan Chiles <br />Drilling Fluid Air <br />Additional Details Exploration Hole 873-C <br />Drilling/Construe±ion: <br />Littiologic Log (Y/i'1) Y <br />Geophysical Log (Y/tl) N <br />• <br />Start 04/20/8G Finish 04/20/86 <br />Construction Uetail5 <br />Casino Specs: Blank_ <br />Perforated Interval(s) <br />Packer <br />2" id PVC sch40 Perforated 1/8" saw slot <br />23.6 -29.G <br />Set At 5.0' <br />Cement From ,~, ;,~ To 5.0' <br />8entonite Slurry From ilA To <br />(,ravel Pack Frum NA Tu <br />Additional Details Drv Hole <br />Development Sunmiary <br />Co~mnents, Problems Too of Lower Dakota Coal at 16.0'. Bottom of Lower Dakota Coal <br />~+ ~z ~~ <br />D-21 Revised 11/01/86 <br />