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2. CWC 134: Aqueous Solution With Total Organic Residues Less Than 10 <br />Percent <br />2.1 5322 Plating Shon Rinse water Recyclin� <br />Site ON <br />2014 uantity LIYj <br />LLNL <br />666,682 <br />Raw Materials: <br />Processed Metal Parts, <br />Plating Chemicals, <br />City Water, <br />Reclaimed Water from <br />Evaporator Unit <br />Recycled <br />Water <br />13322 metal <br />parts surface <br />cleaning,surface <br />preparation, <br />metal etching, <br />plating, dyeing <br />CWC 134 <br />Evaporator Water <br />Reclamation Unit <br />Product: <br />Rinsed metal <br />P� <br />CWC 132 or 792 <br />Concentrate fiom cleanout <br />Off site <br />- p disposal <br />FIGURE TII.2.1. PLATING SHOP FLO W DIAGRAM FOR RECLAIMED RINSE WATER <br />PROCESS <br />Water generated fr <br />om the rinsing of parts in the B322 plating shop is typically contaminated <br />with organic chemicals and hazardous metals used in plating operations. <br />While the shops employ pollution prevention measures to minimize <br />wastewater generation <br />during rinsing operations by using spray rinsing of parts rather than drag out rinsing, this is <br />still one of the largest hazardous waste streams at LLNL. However, the bulk of this waste <br />stream is reconditioned and recycled through B322 evaporator unit. Because this single waste <br />stream is so large, it was excluded when calculating LLNL Category B wastes so as not to <br />dwarf other waste streams of significance. <br />September 1, 2015 SB 14 Plan �,3 <br />l <br />