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ENVIRONMENTAL H A `" SAN JOAQU ��_ .�o y Donna K. Heran, R.E.H.S. == lilt M' ' Director 304 East Weber Avenue,Third Floor Carl 13orgman,R.E.H.S. Laurie A. Cotulla, R.E.H.S. Stockton,California 95202-2708 Mike Huggins, R.E.H.S., R.D.I. • Program Manager Douglas W. Wilson, R.E.H.S. � � Telephone: (209)468-3420 g C4 \P Margaret Lagorio,R.E.H.S. Fax: (209) 464-0138 Robert McClellon, R.E.H.S. Website:www.sjgov.org/ehd/ Jeff Carruesco, R.E.H.S. February 27, 2006 Ralph Renna Delta Land LLC 651 Sargent Rd., Lodi, CA 95242 RE: DBCP in your Water Well for PA-0500580 (MS) 651 W. Sargent Rd., Lodi, CA As part of the landuse application process, water test results were submitted by Neil Anderson& Associates, Inc. in which a sample taken December 13, 2005, was tested for the chemical Dibromochloropropane (DBCP) and showed results of 0.34 ug/L (parts per billion) in your domestic well at 651 W. Sargent Rd., Lodi, CA. 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: 1. As a temporary measure, it is recommended that bottled drinking ater_be used if this well is supplying drinking water. 2. 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."