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PUBLIC HEALTH SERVICES pP�UIN. <br /> SAN JOAQUIN COUNTY a <br /> ENVIRONMENTAL HEALTH DIVISION ` <br /> Karen Furst, M.D., M.P.H., Health Officer �.., <br /> 304 East Weber Avenue, Third Floor • Stockton, CA 95202 °clkoRN <br /> 209/468-3420 <br /> June 18, 2001 FELE COPY <br /> Mary Slikker <br /> 14222 East Louise Avenue <br /> Ripon, California 95366 <br /> RE: Soil Suitability Study for MS-00-07 <br /> A soil suitability study was submitted by Zachary Wong of Wong Engineers, Incorporated <br /> A test for Nitrate was tested for and showed results of 56 mg/L parts per million (ppm) in <br /> your domestic well at 14222 East Louise Avenue. <br /> The State Department of Health Services adopted a standard of 45 parts per million (ppm) <br /> for nitrates in public drinking water systems; however, private well owners are not legally <br /> required to meet this standard. As a precaution for yourself and family, we would suggest <br /> that you have your domestic well re-tested to verify the above sample results. <br /> If your private and/or agricultural well analysis for nitrate exceeded the State standard of <br /> 45 ppm again, 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 <br /> well is supplying drinking water. <br /> 2. In cases where exposure may continue indefinitely, such as with contaminated private <br /> wells, installation of a water treatment device, such as a filter, may be advisable. <br /> However, using bottled water or installing a water treatment device at the kitchen <br /> water tap, will not stop exposure to nitrates if it is in your private water supply. Most <br /> treatment units sold for home installation only treat water at the point of use, such as <br /> the kitchen faucet. As a result,point of entry filters, which treat water for the entire <br /> house, are recommended because they remove all potential sources of exposure. The <br /> "Reverse Osmosis Purification Filter" is the recommended water treatment device in <br /> this case. It operates by passing the well water through a series of filters and reverse <br /> osmosis membranes,thereby removing the nitrate contaminant. Water treatment <br /> equipment suppliers and installers are listed in your phone directory yellow pages <br /> under"Water Filtration &Purification Equipment." <br /> 3. A replacement well is also an alternative for providing uncontaminated water. It is <br /> recommended that a test well be drilled, in order to determine water quality prior to <br /> A Division of San Joaquin County Health Care Services <br />