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For SLAC <br />1.3 Rinse Water from Cooper Cyanide Plating = Metal Finishing <br />Operations <br />Plating Shop operations are dependent upon accelerators needs, research needs and <br />scheduling. Two rinse water baths are treated, one from copper cyanide plating and one <br />from silver cyanide plating. The treatment process consists of cyanate destruction by a <br />two-step oxidation process using sodium hydroxide for pH adjustment and oxidizing with <br />sodium hypochlorite. Cyanide rinse water is treated on-site and discharged to a POTW. <br />This operation generated 588,000 lbs of rinsewater in 2014. 16,689 lbs of rinsewater <br />waste was incorrectly reported in 2010. 'The treatment volumes were inadvertently <br />reported for Units IA and Unit 113. Notification was submitted in CERS was done in <br />2013. <br />Cyanide baths will be moniiored carefully to prolong their useful life and used to their <br />full extent before replacement. SLAC will continue to look into funding the research and <br />testing needed to determine the feasibility of reducing or eliminating the use of cyanide <br />baths. <br />Reverse Osmosis (RO) Resin and Deionization Resin (DI} System for treating rinse water <br />in a closed-loop water treatment system is being investigated to meet water reduction <br />goals at SLAC. <br />September 1, 2015 SB 14 Report II -2 <br />