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• TOMOGRAPHY PAD (TM) <br />BH-1 (Exploration Borehole 1) (Figure 4-12) <br />• Drill 10 5/8" hole a minimum of 40 feet or until at least 5 feet of competent bedrock is <br />encountered. (Air or Air/Foam) <br />• Run 7 5/8", 26.4#, J-55 Surface Casing. <br />• Cement with "Neat Cement" to surface. <br />• Rig up diverter and wait on cement a minimum of 4 hours. <br />• Drill out thru the surface casing with 6 1/2" diameter PDC bit. Advance drill hole to <br />2400 feet and circulate a minimum of 30 minutes. <br />• Geophysical logging to be run without drill rig on the hole. Rig will return after logging <br />to Plug and Abandon the hole. <br />• Plug and abandon hole by mixing and pumping Type I or 11 Portland cement with 2% <br />bentonite via tremie in multiple lifts. Cement to surface. <br />0 <br />C? <br />31