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over groundwater to minimize the time storm water will remain on the <br /> site. Therefore, in the course of a rain storm, the water treatment <br /> plant may treat all groundwater, a mix of ground- and storm water, all <br /> storm water, and back to all groundwater in sequence. The expected <br /> system performance of the ion exchange process in treating storm water <br /> is presented in Table 4. <br /> OBJECTIVES OF STARTUP PROGRAM <br /> The objectives of the startup program are as follows: <br /> I. Confirm treatment plant capacity for all wood treating <br /> chemicals. <br /> 2. Correlate chromate analyzer readings and system totalizer <br /> readings with concentrations of other wood treating chemicals <br /> in treatment plant effluent. <br /> These objectives have been defined to confirm that the available auto- <br /> matic system monitoring devices are adequate to assure treatment. The <br /> two automatic monitoring devices that will be relied upon during system <br /> operation are the automatic totalizer of water treated and the automatic <br /> hexavalent chromium or chromate analyzer. <br /> The automatic totalizer will be the primary monitoring device used <br /> to automatically control system shutdown and annunciate the need for <br /> system regeneration. As described in other sections of this report, the <br /> operating characteristics of the anion and cation resins are predictable <br /> and the influent characteristics of the water to be treated are also <br /> predictable or controllable. Based on the calculations presented in the <br /> previous sections, the potential throughput can be predetermined for the <br /> various waters to be treated. <br /> The influent characteristics of storm water are different than <br /> those of the groundwater. Storm water with its high cation load will <br /> place greater demands on the cation exchanger than an equal volume of <br /> groundwater. In order to balance the run length of the anion exchangers <br /> 6 <br />