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<br />Tahlo n_1 <br />U <br />• Reagents Consumed in <br />Water Treatment Piant Operation <br />Chemical Lb Consumed/Day <br />Separan 1.0-2 .0 <br />Ferric sulfate 500 <br />Barium chloride 150 <br />Lime 1500/ <br />Chlorine (weak solution of sodium hypochlorite) 15 gal/day <br />1/ Not employed since October 27, 1976. <br />Water is also required in the ore sorting plant to wash off the <br />fines attached to each ore particle so that the scanning apparatus can <br />correctly assess the U308 content of that particle. Water for this <br />purpose is drawn from an 11 ft. diameter steel storage tank 4~hich re- <br />• cycles water to the water treatment plant and receives overflow from <br />a 12 ft. diameter steel thickener tank. All of the water anb slimes from <br />the ore sorter are collected and settled in the 12 ft. diam thickener from <br />which the overflow is directed to the 11 ft. diam tank. The solids, con- <br />taining approximately 30% moisture, are removed and mixed with the <br />surface stockpile of upgraded ore which is eventually trucked to <br />Canon City. <br />The present layout of the water-slimes handling system at the <br />ore sorter is shown in Figure D-6. <br />Impoundment System <br />A brief description of each pond, its size, and the calculated <br />retention time, based on maximum flow rates, is given below. <br />*Concrete Ponds 1 and 2 <br /> This is a single concrete pond 113 ft. long x SO ft. wide x 4 ft. deep, <br /> divided into two by a concrete wall. Each individual pond holds 15,000 <br />D-11 <br />