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sodium sulfate. This would increase the sodium sulfate concentration at Pi ,s <br />Eye by about 0.6 mgll. It should be noted (and is noted in the attaehed memo that the 390,000 1b/yr of sodium sulfate discharged by the CRF is about one <br />third of what would be discharged if the individual shops installed their own <br />pretreatment systems. <br />Regarding the "solid" wastes processed and produced by the CRF it is- of tour worth noting that metals will be recovered as part of this operation$ This will <br />reduce the burden on both Pig's Eye and hazardous waste land disposal sites. <br />The Following table shows the estimated amounts of metal recovered and disosed <br />by the CRF in pounds per year: p <br />lb <br />1. Total metals recovered 86,000 <br />2. Metals processed but not 299000 <br />recovered (to land disposal <br />or to Pig's Eye) <br />3. Metals in sludges processed 107,000 <br />or handled (to land disposal) <br />4. Total metals disposed, sum 136,000 <br />of 2 and 3 <br />S. Total disposed as hydroxides, 2175000 <br />dry weight <br />6. Total disposed as sludge, 25 666,000 <br />percent solids <br />The estimated pounds per year ®" each metal recovered are shown in the following <br />table: <br />Cadmium <br />1,600 <br />Chromium <br />16,900 <br />Copper <br />12,200 <br />Nickel <br />139000 <br />Zinc <br />42M1►ZO <br />TOTAL 66, 400 <br />