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3.2 Chemistry <br />3.2.1 Evaluation of best available chemistry technology to replace existing process <br />chemistries and extend the bath process life expectancy <br />3.2.2 Continuous studies, testing and selection of best available technology <br />pretreatment chemistries will assist in the performance and operation of the waste <br />water pretreatment operations. <br />3.2.3 Conduct studies of methods and regulations related to destruction of cyanide <br />at the source <br />3.3 Equipment Changes <br />3.3.1 Minimize waste water generation by installing sensors on the <br />conveyorized lines that will shut the rinses off after a set period of time with no <br />panels entering the equipment. <br />3.3.2 Minimize waste water generation by installing conductivity meters on the <br />immersion rinse tanks to control the flow of water into the tanks. <br />3.4 Other <br />.3 .4.1 Use fill and drain systems in place of the current feed and bleed systems. <br />4. Product Reformulations <br />4.1 Increase use of Entek process to reduce amount of solder used on boards and <br />associated waste. <br />5. Administrative Measures <br />5.1 Review trial chemistry ordering procedures to limit waste chemistry on hand. <br />5.2 Review production chemistry ordering procedures to limit waste chemistry on <br />hand. <br />5.3 Expand use of SPC (Statistical Process Control) to the waste treatment area to <br />measure efficiency of the operations. <br />