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PUBLIC HEALTH SERVICES oPo�l� SAN JOAQUIN MUNTY a ': a: < JOGI KHANNA M.D.M P H Health Officer r . P.O. Box 2009 0 (1601 East Hazelton Avenue) 0 Stockton, Califonua 95201 4 (209) 468-3400 IV. BACKGROUND: Indy had two episodes of hazardous waste spillage. The first occurred on June 24, 1987. A 25 gallon mixture of acid and heavy metal particles entered a storm drain after the container was ruptured. This was diluted with waster and flushed down the drain. The second incident occurred on July 5, 1989. Again, acid and heavy metal mixture was spitted. This was diluted with water and pumped out to an alfalfa field. Both incidents were documented and a Proposition 65 was completed. On March 2, 1988,PHS-EHD signed a Memorandum of Understanding with the State Department of Health Services authorizing PHS-EHD to perform hazardous waste generator inspection in San Joaquin County. Indy was identified as a large hazardous waste generator in 1987,and the first routine inspection was conducted on April 25, 1990, by PHS-EHD. V. GENERAL DESCRIPTION of FACILITY: Indy is a subsidiary of Olin Corporation which operates 60 manufacturing plants in 13 countries. Olin Corporation produces chemicals, metals, electronic materials, and packages circuitry boards. They have contracts with the defense and aerospace industries and water quality management facilities. This facility encompasses 9.3 acres and employs 850 workers. The facility's building includes 76,000 square feet which is comprised of plating bath areas and offices;the surrounding land is undeveloped. The hazardous waste is collected at the main building and stored in a separate shed. Indy was established in Manteca,CA in 1981 and is involved in the electronic packaging of integrated circuits. They take electronic chips (in wafer form) and cut them out. Chips then go through an optical inspection and are sealed in plastic or ceramic packaging . Next, they go through an electroplating bath to be coated with tin or dipped in solder. The final process is called"shear form" where machines knock the packaging out of the form and bend the leads enabling the device to fit in a particular electronic unit. VI. HAZARDOUS WASTE ACTIVITY DESCRIPTION: A. Electroplating baths create a wastewater sludge (filtercake) which precipitates the metals. This waste basically consists of acids and heavy metals. Bath liquid goes through the floor drain to their wastewater treatment system. Here the PH is adjusted,then it goes to the filter press room where it is pressed and workers scrape cake sludge into a drum. The drum is then transferred by fork lift to the hazardous waste storage shed. The filtercake is hauled by World Resources, 8113 W. Sherman Street, Phoenix, Arizona, 85042. 2 A Division of fan Joaquin County Health tare ierv'Ces 10