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2. CWC 134: Aqueous Solution with Total Organic Residues Less Than 10 <br />Percent <br />Site <br />12010 quantity (1b)2014 <br />quantity (lb) <br />LLNL <br />19142534 <br />16662682 <br />2.1 B322 Plating Shon Rinse Water Recycling <br />Water generated from the rinsing of parts in the B322 plating shop is typically <br />contaminated with organic chemicals and hazardous metals used in plating operations. <br />While the shops employ pollution prevention measures to minimize wastewater <br />generation during rinsing operations by using spray rinsing of parts rather than drag out <br />rinsing, this is still one of the largest hazardous waste streams at LLNL. The wastewater <br />generated from this process is reclaimed using an evaporator unit, hard -plumbed into the <br />B322 shop's rinse water collection system. Water processed in the evaporator is then <br />reused as rinse water in the shop. <br />As noted in the 2010 SB 141?Ian/Report, the CWC 134 waste represented the largest <br />hazardous waste stream generated at LLNL. However, the bulk of this waste stream was <br />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 <br />to dwarf other waste streams of significance. <br />l <br />t <br />September 1, 2015 SB 14 Report III -2 <br />