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II. Category A <br />1. CWC 132: Aqueous solution with metals <br />Site <br />2010 VW U Ib <br />2014 uant!b <br />LBNL <br />197,259 <br />1525299 <br />LLNL <br />18$61 <br />87 000 <br />SLAC <br />16,689 <br />588X0 <br />Primary waste generators: <br />For LBNL <br />1.1 Ultra high vacuum facility, metal surface finishins process <br />This waste stream is generated as a result of metal surface cleaning operations. Metal <br />parts are cleaned through a multi -step process including the following: <br />• Ultrasonic aqueous degreasing, <br />• Washing with commercial industrial cleaners (such as 909, B.N., Blue Gold, and <br />Mimchem 500 cleaners), <br />• Surface cleaning with acidic solutions, and <br />• DI -water and tap water rinsing. <br />The decrease in the waste quantities for this waste stream is primarily due to changes in <br />the type and volume of surface cleaning required by operations. <br />For LLNL <br />1.2 Tank Farm Aqueous Solution Treatment <br />LLNL generated aqueous solution fr <br />om its wastewater treatment operation at B695 <br />located at the Decontamination and Waste Treatment Facility (DWTF). Aqueous waste <br />generated by programmatic activities is sent to the DWTF for processing. <br />The treatment process involved chemical preparation and rotary drum vacuum filtr <br />ation <br />without evaporation, which is a part of the wastewater treatment within the DWTF. 'The <br />treated wastewater met discharge limits and was sent to sewer. Wastewater treatment can <br />vary from time to time based on mission -driven activities by programs that generate <br />water requiring treatment. The increase from 2010 coincided with increased waste <br />treatment activities at the DWTF as well as improved tracking of the volumes of wash <br />water used in equipment cleaning and debris washing. <br />September 1, 2015 SB 14 Report II -1 <br />- <br />f_ <br />