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Surface Blasting Work Cont'd Task# 022 Page 3 of 3 <br />DRILLING AND EXPLOSIVES PREPARATION TIME <br />Total Drilling Length: 5,004 linear feet <br />Unadjusted Drilling Rate: 82.00 feet/hour <br />Drilling Time: 95.87 hours <br />Job Condition Corrections: <br />Site Altitude: <br />7,100 <br />feet <br />Altitude Adjustment: <br />0.95 <br />(DRMS est.) <br />Job Efficiency Factor: <br />0 <br />(CH. Exc. HB) <br />Adjusted Drilling Rate: <br />52.19 <br />feet/hour <br />Explosives Prep. Time: <br />76.31 <br />hours <br />JOB TIME AND COST <br />Total Job Time: 172.19 Hours <br />Unit cost: $2.308 per cu. yd. Total Job Cost: $102,081.57 <br />CIRCES Cost Estimating Software <br />