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<br />TABLE 1. GBB WELL ABANDONMENT SPECIFICS NOVEMBER 20, 1987 <br />Well(s) <br />GBB-1 GBB-2 GBB-3 <br />Depth of drill holy (TD in fee[) <br />Surface elevation (f[ above MSL) <br />Water intercepts during drilling (ft) <br />Dri11 hole diameter (inches) <br />Sealants used: <br />1/2 inch bentoni[e pellets <br />Sackrete 4000 psi <br />Concrete <br />Cement plugs (4-1/2" dia) <br />Soil cuttings <br />Surface seal (Sackrete) <br />161 68 8 <br />6128.7 6128.4 6127.8 <br />-110 -60 -5 <br />7-7/8 7-7/8 7-7/8 <br />x x N/A <br />x x N/A <br />x x N/A <br />x x N/A <br />N/A N/A x <br />x x x <br />Amounts of sealant: <br />Ben[onite pellets <br />Sackrete <br />Alluvial road base <br />Bentonite flower/water <br />Cement plugs <br />Concrete (cu yds) <br />Soil cuttings <br />Surface seal Sackrete <br />Drilling Contractor: <br />Installation (1978) <br />Abandonment (1987) <br />How the hole was worked <br />16.5 gal <br />2.64 cu ft <br />13 gal <br />80dk/3 gal <br />1 <br />0.35 <br />0 <br />1.3 cu ft <br />8.5 gal <br />1.32 cu ft <br />7 gal <br />0 <br />1 <br />0.14 <br />0 <br />2/3 cu ft <br />Lyster Drilling Inc. <br />Craig, Colorado <br />Radian Corporation <br />(Tarry Setlergren) <br />Trapper Mining Inc. <br />Craig, Colorado <br />Artesian Sailed <br />Bailed Pumped <br />Pianped <br />0 <br />0 <br />0 <br />0 <br />0 <br />n <br />5.22 gal <br />2/3 cu ft <br />Bailed <br />Pumped <br />WSH/jb 11/87 <br />