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Watts Winery SSS Adendum <br /> Our Project: LG5090507 <br /> July 8, 2009 <br /> As indicated, DBCP was found in the sample. DBCP is a nematocide and soil fumigant for <br /> vegetables and grapes. It is thought to cause health problems consisting of kidney damage, <br /> liver damage, and cancer. The use of DBCP was discontinued in 1979. The Environmental <br /> Protection Agency (EPA) set the maximum contaminant limit (MCL) at 0.2 parts per billion (ppb) <br /> because the EPA believes that given present technology and resources, this is the lowest level <br /> to which water systems can reasonably be required to remove this contaminant should it occur <br /> in drinking water. <br /> Conclusions and Recommendations <br /> The onsite water well was tested for nitrate and DBCP. DBCP was detected at 0.39 ppb, which <br /> is almost twice the maximum amount allowed in drinking water by the US EPA. Nitrate <br /> concentration in ground water was found to be 13.3 mg/L-NO3, which is well below the <br /> maximum contaminant drinking water limit of 45 mg/L-NO3. <br /> Because of the favorable result of the nitrate loading calculation, no mitigation measures are <br /> warranted based on nitrate. However, due to the elevated levels of DBCP in the water sample <br /> we recommend that the water be tested again to confirm its presence and the owner should be <br /> made aware that a filtration system, and or bottled water, should be used for a potable on-site <br /> water source. <br /> Limitations <br /> Our professional services were performed, our findings obtained, and our conclusions proposed <br /> in accordance with generally accepted engineering principles and practices. This warranty is in <br /> lieu of all other warranties either expressed or implied. Test findings and statements of <br /> professional opinion do not constitute a guarantee or warranty, expressed or implied. <br /> Sincerely, <br /> NEIL O.ANDERSON&ASSOCIATES, INC. <br /> f ��S$10HAC SFO <br /> —Baniel E. Kramer, Project Geolo sDaniei Edw N <br /> Professional Geologist 8657 Kramer and <br /> rnk No. 8657 • <br /> Op CA <br /> ANGELS CAMP L 0 I• Lodi3O A 952 00• 209.367.3701 SACRAMENTO FAX 20 369.4228 • www no nder on.com <br /> LODI 902 IndusCrial Wayy <br />