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~ ` APPENDIX A <br />CALCULATIONS, ORE SOR1 41ATER USE <br />* Initial water volume contained by>lding tank <br />12'a x 18' <br />V = ,rr2h <br />_ ,x(36)(18) <br />= 2035.74 ft3 @ 7.4g ylons/f t3 <br />Initial water volwne = 15,227 gaons <br />** Water volume contained by holdil tank after 48 hour operational <br />cycle <br />12'e x 17' <br />V = ,rr2h <br />= n(36)(17) <br />= 1922.65 ft3 <br />Final water volume = 14,381 gllons <br />The difference between initialiater level and final water level <br />(846 gallons) represents the m;<imum consumptive use of water <br />during each 48 hour operationa~cycle at the ore sorter. <br />Operational water loss 846 all Ions = 17.6 gallons/hour <br />48 lours <br />Operational work cycle 120operational hours/week <br />x <br />52 reeks/year <br />6240 operational hours/year <br />Annual consumptive use 624) hours/year x 17.6 gallons/hour = 109,824 gal/yr <br />= 0.337 acre ft./yr <br />Footnotes <br />* Initial water volume contained in the holding tank at the beginning of the <br />two day (48 hour) operational cycle is a function of the observed water <br />level in the holding tank after receiving treated water from the I<3 earthen <br />settling pond. This water level is 18' or full capacity in the 12' diameter <br />holding tank. <br />** Final water volume contained in the holdiny tank at the End of the two day <br />(48 hour) operational cycle is a function of the observec.~~~ater level in the <br />holding tank prior to pumping the water to the water treatment plant. This <br />water level averages 17' or one foot from full capacity in the 12' diameter <br />holding tank. <br />