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III. Category B <br />1. CWC 132: Aqueous solution with metals <br />Site <br />2010 quantity jin <br />LIH4 uanti b <br />LLNL <br />41,435 <br />1339880 <br />1.1 Floor care effluent <br />The floor stripping process generated approximately 17,7351bs of CWC 132 waste in <br />2010 and 20,462 lbs in 2014. <br />In an effort to improve both pollution prevention and worker health and safety, the team <br />that carries out floor maintenance and floor stripping operations routinely tries alternative <br />stripping and finish products, such as products that do not contain zinc and/or are Green <br />Seal certified. Over the past four years several floor care products were evaluated and the <br />following Green Seal certified products are currently used: #41 floor finish remover, #42 <br />metal4ree finish, and #47 floor sealer. With the substitution to a metal -free floor finish <br />LLNL has significantly reduced the area that still has metal containing floor finish. <br />Although LLNL continued to generate floor stripping effluent that was hazardous due to <br />the presence of zinc while the remaining layers of zinc -containing floor wax were <br />removed, it is expected that the amount of hazardous floor stripping effluent will be <br />significantly reduced and ultimately eliminated. <br />1.2 Aqueous solution from rinse etch tank B321 <br />During 2010 and 2014,11321 generated 23,700 lbs. and 13,418 lbs., respectively. <br />The LLNL special process shops in B321 employ different processes to serve the needs <br />of the research and development activities at the LLNL site. Shop activities, including <br />etching, metal plating and rinsing processes are done to strict customers specifications. <br />Since the etching activities are research oriented, they can generate multiple types of <br />spent aqueous solutions and rinse -water. This waste stream has mainly CWC 132 and <br />small quantities of wastes containing other CWCs depending on the particular process <br />and characteristic of the waste. The shops employ methods to extend the life of the <br />plating' baths by rinsing between plating baths. However, once these baths no longer <br />meet specifications, the solutions are containerized and shipped off-site for treatment and <br />disposal at authorized facilities. <br />The 43.4% reduction in the generation of this waste represents chan <br />ges in mission <br />demand since 2010. <br />September 1, 2025 SB 14 Report <br />