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is a necessary step since some of the waste originates from laboratory areas that may <br />introduce hazardous contaminants into the waste stream. <br />Periodically, the custodial organization evaluates new products, looking for alternatives <br />that increase worker health and safety and reduce impact to the environment. Three years <br />ago, floor care products were evaluated but none were available that had the required <br />level of performance. <br />SOURCE REDUCTION/POLLUTION PREVENTION EVALUATION <br />Description of Measure: <br />LLNL plans to continue the existing source reduction measures and best management <br />practices, such as limiting the number of wax layers that can be applied prior to <br />stripping, performing floor care only when needed and continuing to evaluate <br />alternative floor cleaning products that could lead to the reduction or elimination of <br />hazardous waste. <br />A product evaluation cycle is currently underway with an emphasis on Green Seal <br />certified floor care products. <br />September 1, 2011 SB 14 Plan <br />16 <br />1.2 CWC 132 — Aqueous solution from rinse etch tank B321 <br />Site 2010 quantity (lb) <br />LLNL 23,700 Ib <br />Raw Materials: Etching of <br />Dt 1-1 metals before <br />Metals rinsing. Product. <br />Finished or <br />intermediate <br />metals. <br />CWC 132 Aqueous <br />solution from rinse Ii OtPSite <br />etch tank. disposal. <br />FIGURE 111.2.2 B321 RINSE ETCH TANK WASTE GENERATION PROCESS <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 />SOURCE REDUCTION/POLLUTION PREVENTION EVALUATION <br />Description of Measure: <br />LLNL plans to continue the existing source reduction measures and best management <br />practices. No other source reduction measures are planned at this time. <br />September 1, 2011 SB 14 Plan <br />17 <br />