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San Joaquin County <br /> Environmental Health Department DIRECTOR <br /> Donna Heran, REHS <br /> r.' 1868 East Hazelton Avenue <br /> Stockton, California 95205-6232 PROGRAM COORDINATORS <br /> Robert McClellon,REHS <br /> Jeff Carruesco,REHS,RDI <br /> �rFoad Website: www.sjgov.org/ehd Kasey Foley,REHSLindaTurkatte,REHS <br /> Phone: (209)468-3420 Rodney Estrada,REHS <br /> Fax: (209) 464-0138 Adrienne Ellsaesser,REHS <br /> November 14, 2013 <br /> Chiappe Farms Inc. <br /> 5419 Stanley Road <br /> Farmington, CA 95215 <br /> Attn: Tony Chiappe <br /> RE: Nitrates in your Water Well for Minor Subdivision Approval PA-1300087 <br /> At 24226 E Hwy 4, Farmington, CA <br /> As part of the Miner Subdivision Approval process, water test results were submitted by Live <br /> Oak Environmental Inc, in which a sample taken July 18, 2013, was tested for Nitrates and <br /> showed results of 76.8 ppm (parts per million) in your domestic well at the above referenced <br /> address. <br /> The State Department of Health Services adopted a standard of 45 parts per million(ppm) for <br /> nitrates in public drinking water systems; however, private well owners are not legally required <br /> to meet this standard. As a precaution for yourself, members and guests, the Environmental <br /> Health Department would suggest that you have your domestic well tested annually to verify if <br /> the above-described chemical continues to be above state drinking standards. <br /> If your private well analysis for nitrate exceeds the State standard of 45 ppm again,the following <br /> 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 is <br /> 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 nitrates in your private water supply. Most treatment units sold for home <br /> installation only treat water at the point of usesuch as the kitchen faucet, and do not prevent <br /> exposure through skin contact,bathing or inhalation. As a result,point of entry filters,which <br /> treat water for the entire house, are recommended because they remove all potential sources <br /> of exposure. The"Reverse Osmosis Purification Filter" is the recommended water treatment <br /> device in this case. It operates by passing the well water through a series of filters and <br /> reverse osmosis membranes thereby removing the nitrate contaminant. Water treatment <br />