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LLNL-AR-788093 <br /> External <br /> 2. CWC 132: Aqueous Solution with Metals <br /> Site 2018 quantity(lb) <br /> LLNL 24,571 <br /> 2.1 CWC 132—Engineering (321A Main Bay) Coolant from Machining <br /> Operations <br /> Site 2018 quantity (lb) <br /> LLNL 5,554 <br /> Raw materials: cutting Machining Machined parts <br /> fluid,water,machine oils operations <br /> Spent coolants from <br /> machining operations Off-site <br /> (CWC 132) disposal <br /> FIGURE III.2.1 ENGINEERING(321A MAIN BAY)COOLANT FROM MACHINING <br /> OPERATIONS <br /> Oil from machining operations can intrude into the coolant over time and cause the coolant to <br /> become contaminated. A skimmer or disk is used periodically to skim off the oil, along with <br /> some of the coolant. The residue is then collected for disposal. <br /> SOURCE REDUCTIONTOLLUTION PREVENTION EVALUATION <br /> Description of Measure: <br /> Engineering 321A Main Bay is switching to a new type of coolant and is implementing a <br /> filtration system in 2019. These changes are anticipated to reduce the amount of CWC <br /> 132 waste generated from Main Bay machining operations. <br /> September 1, 2019 SB 14 Plan I11-4 <br /> ESH-EFA-P2S-19-16592 <br />