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San Joaquin County DIRECTOR <br /> Donna Heran, REHS <br /> ,o._ ;..so Environmental Health Department ASSISTANT DIRECTOR <br /> 600 East Main Street Laurie Cotulla,REHS <br /> Q: a <br /> Stockton, California 95202-3029 <br /> PROGRAM COORDINATORS <br /> -- — Carl Borgman,REHS <br /> Website: www.s ov.or /ehd Mike Huggins, REHS, RDI <br /> <i F_� 18 9 Margaret Lagorio, REHS <br /> Phone: (209) 468.3420 Robert McClellon, REHS <br /> Fax: (209) 464-0138 Jeff Carruesco,REHS,RDI <br /> Kasey Foley,REHS <br /> December 5, 2008 <br /> Vic Mettler COPY <br /> 16475 N. Locust Tree Road <br /> Lodi, CA 95240 <br /> RE: Water Sample Results for PA-0800204 (SA) <br /> 16475 N. Locust Tree Road, Lodi, CA <br /> As part of the conditions for your land use application, water test results were submitted by FGL <br /> Environmental in which a sample taken August 25, 2008, was tested for the chemical <br /> Dibromochloropropane (DBCP) and showed results of 0.90 ug/L (parts per billion) in your <br /> domestic well at 16475 N. Locust Tree Road, Lodi, California. <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 your domestic well tested annually to verify if the above-described chemical rises <br /> above state drinking standards. <br /> If your private and/or agricultural well analysis for Dibromochloropropane exceeded the State <br /> 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 be used if this well <br /> is supplying drinking water. <br /> 2. In cases where exposure may continue indefinitely, such as with contaminated private wells, <br /> installation of a water treatment device, such as a filter, may be advisable. However, using <br /> bottled water or installing a water treatment device at the kitchen water tap, will not stop <br /> exposure to DBCP if it is in your private water supply. Most treatment units sold for home <br /> installation only treat water at the point of use, such as the kitchen faucet, and do not <br /> prevent exposure through skin contact, bathing or inhalation. As a result, point of entry <br /> filters, 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 recommended <br /> water treatment device in this case. It operates by passing the well water through a <br /> charcoal bed, thereby absorbing the DBCP contaminant. Water treatment equipment <br /> suppliers and installers are listed in your phone directory yellow pages under"Water <br /> Filtration & Purification Equipment." <br />