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S Q N J Q Q Q U I N Environmental Health Department <br /> COUNTY Linda Turkatte REHS Director <br /> Greatness rows here. <br /> `' " g Kasey Foley,REHS,Assistant Director <br /> PROGRAM COORDINATORS <br /> Robert McClellon,REHS <br /> �. ^• Jeff Carruesco, REHS, RDI <br /> Willy Ng, REHS <br /> Muniappa Naidu, REHS <br /> December 19, 2018 Michael Kith, REHS <br /> Frank Stonebarger <br /> 8408 N. Beecher Rd. <br /> Stockton, CA 95215 <br /> RE: Nitrate and 1,2-Dibromo 3-chloropropane (DBCP), in your Water Well for 8408 N. Beecher <br /> Rd., Stockton <br /> The Environmental Health Department has received water test results taken by Mike Toy and analyzed <br /> by Precision Enviro-Tech and California Laboratory Services. The samples taken on September 12, 2018 <br /> was tested for Nitrate and DBCP on September 12 and September 18, 2018. The results were 15.0 mg/L <br /> for Nitrate as Nitrogen, which is above the MCL of 10 mg/L, and 0.30 pg/L for DBCP, which is above the <br /> MCL of 0.010 pg/L. <br /> The State Department of Health Services adopted a State Maximum Contaminant Level (MCL) in drinking <br /> water of 0.10 mg/L-nitrogen for Nitrate and 0.010 pg/L for DBCP; however, private well owners are not <br /> legally required to meet this standard. As a precaution for yourself, members and guests, the <br /> Environmental Health Department would suggest that you have your domestic well tested annually to <br /> verify if the above-described chemical continues to be above state drinking standards. <br /> If your private well analysis for TCP exceeds the MCL of 0.10 mg/L-nitrogen for Nitrate and 0.010 pg/L <br /> for DBCP 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 well is supplying <br /> 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 bottled <br /> water or installing a water treatment device at the kitchen water tap, will not stop exposure to TCP in <br /> your private water supply. Most treatment units sold for home installation only treat water at the pgjat <br /> of use, such as the kitchen faucet, and do not prevent exposure through skin contact, bathing or <br /> inhalation. As a result, point of entry filters, which treat water for the entire house, are recommended <br /> because they remove all potential sources of exposure. The "Reverse Osmosis Purification Filter" is <br /> the recommended water treatment device in this case. It operates by passing the well water through <br /> a series of filters and reverse osmosis membranes thereby removing the TCP contaminant. Water <br /> treatment equipment suppliers and installers are listed in your phone directory yellow pages under <br /> "Water Filtration & Purification Equipment." <br /> 3. A replacement well is also an alternative for providing uncontaminated water. It is recommended that <br /> a test well be drilled, in order to determine water quality prior to final placement of the well. Water <br /> quality may be determined and monitored through water sample analysis performed by a State <br /> Certified Laboratory. (See attached list of State Certified Laboratories). <br /> 1868 E. Hazelton Avenue I Stockton, California 95205 1 T 209 468-3420 1 F 209 464-0138 1 www.sjcehd.com <br />