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3. CWC 181: Other inorganic solid waste Site 2006 Quantity (lb)2010 uantit Ib SLAC 1404 1333 LLNL 175 175 Primary waste generators: Far SLAC 3.1 Metal finishing overations including ar cleaning al plating CWC 181, and CWC 711 are generated through the MFO. The Metal Finishing operations perform a variety of activities to meet demanding and sometimes unique metal finishing specifications needed to fabricate equipment for high- powered electrical equipment. The uses of materials that produce these wastes are essential for successful operations. CWC 181, which is in the form of spent filters used in cyanide baths, is reduced by extending the life of the filters by monitoring their pressure drop. For LLNL 3.2 Analytical Lab Operations The 2007 SB14 Plan addressed 24 lbs of CWC 181 waste generated from the disposal of spent glass tubes used in the Accelerator Mass Spectrometer. This waste stream varies from year-to-year, and is dependent on the number of samples processed. During 2010 there was an increase in demand for processed samples resulting in 75 lbs of spent glass tube waste. No other applicable Category C CWC 181 waste was generated during 2010. A new interface is currently being evaluated that could substantially reduce or eliminate the use of glass tubes for sample processing. If deemed feasible, the new process could begin implementation next year. The 2007 SB14 Plan mentions 43 lbs of C WC I gl Category C wastes coming from engineering machine shops related to metal chip and contaminated tools. The remaining 8 lbs from the 2007 SB14 PIan were not addressed. In 2010, no Category C waste was generated from engineering activities. 6. CWC 791: Liquids withpH52 Site 2006 Quantity (lb)2010 quantity (lb) LLNL 228 50 6.1 Etchine operations B153 houses the Center for Micro -and Nanotechnology (CMNT), which develops and applies microscale and nanoscale technologies to support LLNL missions. The research focuses on materials, devices, instruments and systems that require microfabricated components. In 2006, CMNT generated 45 lbs of CWC 791 wastes and generated 50 lbs of CWC 791 wastes in 2010. The waste generated from CMNT activities are mainly from lab packs of individual small containers used for etching substrates for microtechnology devices. CMNT is a leader in incorporating chemical management best practices, including encouraging reuse, use of small volumes and alternative chemicals. An additional 47 lbs of Category C CWC 791 waste was generated in 2006 from the T2801 semiconductor laboratory, which was closed in 2007. The remaining 2006 CWC 791 wastes were generated from NIF optics processes (addressed under CWC 135, above) and other processes no longer generating CWC 791 wastes. September 1, 2011 SB 14 Report 37 September 1, 2011 SR 14 Report 40