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LLNL-AR-788093 <br /> External <br /> II. CATEGORY A Waste Streams <br /> Category A waste streams are defined as "Hazardous wastes that are <br /> processed through an on-site wastewater treatment unit prior to discharge to a <br /> publicly owned treatment works (POTW) or to a receiving water under a <br /> National Pollution Discharge Elimination System(NPDES)permit." <br /> 1. CWC 132: Aqueous Solutions with Reactive Anions with Metals <br /> Site 2018 quantity(lb) <br /> LLNL 258,464 <br /> 1.2 Tank Farm Aqueous Solution Treatment <br /> Site 2018 quantity (lb) <br /> LLNL 258,464 <br /> Tank Farm Aqueous Added chemicals <br /> Solution: and Rotary <br /> Metal Contaminants, Drum Vacuum Residues for Off- <br /> Organic Chemicals. Filtration at 1j. site Disposal. <br /> B695 Tank <br /> Wash water. (CWC 132) Farm. <br /> Treated Aqueous <br /> Solution sent back to <br /> Tank Farm; Sampled Sewer <br /> Discharge. <br /> Prior to Discharge. <br /> FIGURE 11.1.2: CWC 132 PROCESS FLOW DIAGRAM FOR TANK FARM AQUEOUS <br /> SOLUTION TREATMENT PROCESS <br /> Compatible aqueous solutions generated from various LLNL programmatic activities and <br /> operations such as debris washing, sample preparation and analysis and equipment <br /> maintenance and cleanout are consolidated at the B695 Tank Farm for treatment. <br /> The treatment process involves addition of appropriate treatment chemicals followed by <br /> filtration using a rotary drum to separate solids from liquids. The liquid portion of the waste <br /> is tested to ensure it meets POTW discharge limits prior to discharging to the sanitary sewer. <br /> Residual solids are sent offsite for disposal. <br /> September 1, 2019 SB 14 Plan 11-1 <br /> ESH-EFA-P2S-19-16592 <br />