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Pacific Paperboard Products <br /> Page three <br /> returned to the pulper and wastes are discharged to the same storage container holding <br /> wastes from the junk tower. Pulp from the turbo-separator receives a final cleaning in <br /> the cyclone cleaner. Settleable wastes are extracted from the pulp and, because use- <br /> able fibers are still present, the wastes are passed over vibrating screens. Accepts <br /> are returned to the pulper and wastes are discharged to a waste storage container. <br /> The .centri-sorter process line generates solid wastes that are discharged into two <br /> separate waste storage containers. If any contamination exists it will most probably <br /> be found in the container holding the combined wastes from the junk tower and the <br /> screen separator. <br /> Poly-broke line. The poly-broke line is the processing line which handles and cleans <br /> clean paper feedstock. The feed, pulping and cleaning operations are shown in a process <br /> diagram on Figure 1. The cleaning process is simpler than the centri-sorter line <br /> and the waste produced is predominantly plastic. Referring to Figure 1 , the operation <br /> starts when the paper rolls and cuts are pushed from the charging floor into the centri- <br /> fugal pulper. Water is added and the paper is pulped. The pulp from the pulper is <br /> then passed over a vibrating screen separator. Accepts from the separator are passed <br /> through a second pulper while wastes are discharged into a waste storage container. <br /> The waste storage container receives wastes only from the poly-broke line. <br /> Waste Quantities and Characteristics <br /> The waste from the cleaning operations are generated from nontoxic solids and water. <br /> Therefore, the wastes should also be nontoxic in nature. To test this hypothesis, <br /> samples of the liquid were taken from two waste containers and subjected to laboratory <br /> analyses. Only chemical analyses were performed since there are no direct discharges <br /> of waste into surface water at the French Camp disposal site. The principal concerns <br /> were with contamination of the groundwater under the disposal site. The results of those <br /> analyses are presented later in this section. <br /> The wastes under evaluation are generated from two processing lines which prepare <br /> recovered paper products for use in new products. The analysis covers only those plant <br /> wastes resulting from cleaning and pulping operations. All other plant solid wastes are <br />