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Management Practices (BMPs) involving a reduction of the volume of wash water used in equipment cleaning and debris washing. For SNUCA 1.3 Electronic Prolotvne Laboratory -Printed Circuit Board Manufacturing The Electronic Prototype Laboratory -Printed Circuit Board Manufacturing program developed and manufactured customized circuit boards for various customers onsite. The circuit board plating line contained various plating baths that were each followed by rinses. These rinses contained acids, caustics, and metals. The rinse water was discharged to the 910 Liquid Effluent Control System (LSCS), which consisted of a main tank (5000 gallons), and two smaller transfer tanks. The wastewater was pumped through an ion exchange system to remove metal contaminants and neutralized. The treated water was tested to ensure it met the local limits before discharging to the local Publicly Owned Treatment Works (POTW). SNUCA generated 67,554 lbs of rinse water during 2006 and none in 2010. In 2006 SNUCA site management decided to close the Electronic Prototype Laboratory. The closure of this program resulted in the closure of the 910 LECS. On February 17, 2010 the tiered permit for the Electronic Prototype Laboratory which included the LECS [the LECS consisted of a main tank (5000), and two smaller transfer tanks) was officially closed. The tiered permit was for neutralization and ion exchange of the wastewater discharges prior to a POTW. This Laboratory was not operational during 2010 and did not discharge any wastewater. September 1, 2011 SB 14 Report CWC 791: Liquids with pH52 Site _]�2006 uantit Ib 2010 quantity(lb) LBNL 6,954,472 7,674,705 SNUCA 0 239,900 2.1 Building 70A metal and electronic parts cleaning operations, Acid Neutralization. This waste stream consists of acidic or caustic wastewaters, and is generated as a result of metal and electronic parts cleaning operations. The waste stream is generated primarily in three research buildings, building 2, 67 and 70A, where wastewater from multiple sinks in different laboratories is collected in a retention tank. The wastewater is subsequently treated and discharged to a POTW. The treatment consists of a neutralization process, which is authorized by the DTSC tinder the California Tiered Permit program (Permit -by -Rule for B2 and 70A. Conditional Authorization for B67). No source reduction activities were undertaken; however, a feasibility study was conducted to estimate the costs of piping the treated water into the cooling towers for use as the makeup water. This plan was approved and funded and the operational fix was implemented in early January 2011. The reuse option for this water is expected to result in approximately 500,000 gallons of water saved per year. The increase in the amount of wastewater generation is due to abnormally high plenum flushes in B67 and consequently, large quantities of water flushed through the system in October and November of 2010. This situation was resolved by December, when flushes were back to normal levels. 2.2 Microstructures Laboratory The Microstructures Laboratory is a multi -discipline user clean room facility used to conduct research in semiconductor micro -fabrication processing technology. The Microstructures Lab is dedicated to the fabrication of small electronic, mechanical, optical and flow system devices. These devices are fabricated using photolithography, vacuumthin film deposition, spin casting, chemical vapor deposition, wet chemical and dry plasma etching. In 2010 the Microstructures Laboratory generated 239,900 pounds of wastewater. The wastewater included rinsates from wet etching and from photolithographic developing; washing/rinsing of laboratory glassware and utensils; and finally drainage from our wafer dicing saw and spin rinse/dryers. The wastewater was not reported in SB -14,2007. September 1, 2011 SB 14 Report