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i <br /> PUBLIC HEALTH SEVICES pRpV�N <br /> SAN JOAQUIN COUNTY <br /> ENVIRONMENTAL HEALTH DIVISION <br /> Ernest M. Fujimoto, M.D., M.P.H., Acting Health Officer <br /> 445 N. San Joaquin Street • 11. 0. Box 388 • Stockton, CA 95201-0388 <br /> 209/468-3420 <br /> July 18, 1995 <br /> G. E. L. Alves <br /> 9520 East Peltier Road <br /> Acampo, CA 95220 <br /> Re: DBCP in your Water Wells/MS-9524, 9520 East Peltier Road, Acampo <br /> A soil suitability study was submitted by R. F. Kraetsch, Civil Engineer, in which a test for <br /> the chemical Dibromochloropropane (DBCP) was tested for and showed results of 0.25 ug/L <br /> (parts per billion) in your domestic well. <br /> The State Department of Health Services adopted a standard of 0.2 parts per billion (ppb) for <br /> DBCP in public drinking water systems in 1989, however, private well owners are not legally <br /> required to meet this standard. As a precaution for yourself and family, we would suggest that <br /> you have the domestic well tested annually to verify if the above described chemical raises above <br /> state drinking standards. <br /> If your private and/or agricultural well analysis for Dibromochloropropane (DBCP) exceeded <br /> the State standard of 0.2 ppb, the following alternatives are being provided for your guidance: <br /> 1. As a temporary measure, it is recommended that bottled drinking water to be <br /> used. <br /> 2. In cases where exposure may continue indefinitely, such as with contaminated <br /> private wells, installation of a water treatment device, such as a carbon filter, <br /> may be advisable. However, using bottled water or installing a water treatment <br /> device at the kitchen water tap, will not stop exposure to DBCP if it is in your <br /> private water supply. Most treatment units sold for home installation only treat <br /> water at the point of use, such as the kitchen faucet, and do not prevent exposure <br /> through skin contact, bathing or inhalation. As a result, point of entry filters, <br /> which treat water for the entire house, are recommended because they remove all <br /> potential sources of exposure. The "granular activated carbon" filter is the <br /> recommended water treatment device in this case. It operates by passing the well <br /> water through a charcoal bed, thereby absorbing the DBCP contaminant. Water <br /> treatment equipment suppliers and installers are listed in your phone directory <br /> yellow pages under "Water Filtration & Purification Equipment." <br /> A Division of San Joaquin County Ifealth Care Services <br />