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S <br /> LIVE OAK GEO ENVIRONMENTAL, INC. <br /> 407 W.Oak St., Lodi, CA 95240,0- (209)369-0375.• logelodi.com <br /> June 4, 2010 <br /> Transmitted by U.S. Mail <br /> Project Number: 1010 <br /> John Van Groningen <br /> 15100 Jack Tone Rd. <br /> Manteca,CA 95336 <br /> Regarding: Water Testing Results <br /> Van Groningen Property Soil Suitability Study <br /> APN 245-160-31 &portion of 245-160.24 <br /> 13799 E. Clinton South Ave., Ripon,CA <br /> Dear Mr.Van Groningen-.- <br /> We <br /> roningen:We have received the analytical results for the water sample collected on your property as part of the <br /> above Soil Suitability Study. Details of the sample collection were included on page 3 through 4 of the <br /> report. <br /> Dibromochloropropane (DBCP)wasnot�ted-in-the`mple. <br /> Nitrate was detected at a concentration of 325 mg/L-NO3. Thii result is well above the Maximum <br /> Contaminant-Leve( L)of 45 mg°/L-NO3set by the US El? . In our experience, this high level is not <br /> unusual for the�areaou may wish to discuss methods of reducing the nitrate levels in your drinking <br /> water-with-the Environmental Health Department and/or a well contractor. For health reasons, we �— <br /> recommend that the well water not be consumed until nitrate levels can be reduced to below the MCL. <br /> Utilizing bottled water for drinking water may be a good alternative to consider. <br /> Although nitrate is a naturally-occurring compound necessary for plant growth, it can cause health <br /> problems when present at high levels in drinking water. The most common health effect of nitrates in <br /> water is methemoglobinemia or blue baby syndrome, which results in reduced.oxygen supply to vital <br /> tissues. Pregnant women and certain others can also develop methemoglobinemia. Symptoms include a <br /> bluish color of the skin, as well as headache, dizziness, weakness,and difficulty breathing. Ingestion of <br /> high levels of nitrates over time can also lead to gastric problems. <br /> We appreciate the opportunity to work on this project. If we can be of any further assistance, please do <br /> not hesitate to call. <br /> Sincerely, <br /> Live Oak GeoEnvironmental,Inc. <br /> David J.Welch, CEG, CHG, PGP, Owner <br /> CC: San Joaquin County Environmental Health Department <br /> Environmental 42• Engineering Geology ❖ Geophysics <br />