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SA NAOAQUIN A Environmental Health Department COUNTY Linda Turkatte, REHS, Director Greatness grows here. Kasey Foley, REHS, Assistant Director PROGRAM COORDINATORS Robert McClellon, REHS Jeff Carruesco, REHS, RDI Steven Shift, REHS Willy Ng, REHS Muniappa Naidu. REHS July 21, 2021 Berton Costamanga Delta Packing Co. of Lodi, Inc. 6021 E. Kettleman Ln Lodi, CA 95240 RE: DBCP in your well water for 6021 E. Kettleman Ln, Lodi As part of the Soil Suitability / Nitrate Loading Study, water test results were submitted by Live oak Environmental in which samples taken August 11, 2020 were tested at FGL Enviromental for the chemical Dibromochloropropane (DBCP). The DBCP results were 0.63 ug/L (parts per billion) in your domestic/main well and 0.81 ug/L (parts per billion) in your fire suppression well at the above referenced address. The State Department of Health Services adopted a standard of 0.2 parts per billion (ppb) for DBCP in public drinking water systems in 1989; however, private well owners are not legally required to meet this standard. As a precaution for yourself and family, we would suggest that you have your domestic well tested annually to verify if the above-described chemical rises above state drinking standards. If your private and/or agricultural well analysis for Dibromochloropropane exceeded the State standard of 0.2 ppb, the following alternatives are being provided for your guidance: As a temporary measure, it is recommended that bottled drinking water be used if this well is supplying drinking water. In cases where exposure may continue indefinitely, such as with contaminated private wells, installation of a water treatment device, such as a filter, may be advisable. However, using bottled water or installing a water treatment device at the kitchen water tap, will not stop exposure to DBCP if it is in your private water supply. Most treatment units sold for home installation only treat water at the point of use, such as the kitchen faucet, and do not prevent exposure through skin contact, bathing, or inhalation. As a result, point of entry filters, which treat water for the entire house, are recommended because they remove all potential sources of exposure. The "granular activated carbon" filter is the recommended water treatment device in this case. It operates by passing the well water through a charcoal bed, thereby absorbing the DBCP contaminant. Water treatment equipment suppliers and installers are listed in your phone directory yellow pages under "Water Filtration & Purification Equipment. 1868 E. HazeIton Avenue I Stockton, California 95205 I 1 209 468-3420 I F 209 464-0138 I www.sjcehd.com