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Project Reference General Description of Project Treatment Technologies Employed Portion of Work by LEE Project Dates Start Finish HMT  Fremont, CA Treatment of 85 gpm of heavy metal rinses & polishing wastewater Chemical Treatment; Treatability test, design, permitting, equipment, manufacturing, construction, startup & training 1998 1998 Hyundai Electronics  San Jose, CA Treatment of 240 gpm heavy metal rinses, 2-1000 gallon batch, chemical distribution, wastewater Chemical Treatment; Treatability study; design, permitting, equipment, manufacturing, construction management, startup & training 1997 1998 Hyundai Electronics  San Jose, CA Treatment of 700 gpm non-metal rinses & chemical distribution system, wastewater collection & pumping system Neutralization Design, permitting, equipment, manufacturing, construction, startup & training 1997 1997 HMT  Eugene, OR Treatment of 240 gpm of heavy metal, 700 gpm of non-metal rinses, 3-1000 batch treatment & chemical distribution systems Chemical Treatment; Treatability study; design, permitting, equipment, manufacturing, construction management, startup & training 1995 1996 HMT  Fremont, CA Pretreatment of polishing wastewater Chemical Treatment; Design equipment, procurement, construction, startup & training 1996 1996 Komag, Inc.  Milpitas, CA Treatment of polishing wastewater Chemical Treatment; microfiltraion; sludge dewatering Treatability study;  design; construction 1992 1993 Trace Storage Tech.  Hsin Tzu, Taiwan Treatment of hard disk manufacturing wastewater Chemical Treatment;  sludge dewatering Treatability study;  design; construction 1991 1992 Kobe Precision  Hayward, CA Treatment of waste containing fine aluminum particles and detergent and treatment of tap water to produce high purity waster supply Chemical Treatment;  sludge dewatering: ion exchange; activated carbon absorption; UV disinfection Treatability study;  design; construction 1988 1989 Komag, Inc.  Milpitas, CA Treatment of hard disk manufacturing wastewater Chemical Treatment;  sludge dewatering; treatment of chelating chemicals Treatability study; design; construction; and startup cooperation 1984 1985

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