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Addendum-Domestic Well Results <br /> Soil Suitability Study/Nitrate Loading Study <br /> 21300 Mann Road Page 12 <br /> Table 1. Laboratory Analytica Results, December 27,2019 <br /> Analytical Units Well MCL <br /> F-- I Method � Sam le <br /> Nitrate as Nitrogen) 110 <br /> DBCP 11 E524.3 u L 0.29 0.2 <br /> 1. Based on EPA's MCL (Maximum Contaminant Level). <br /> Nitrate(as Nitrogen)was detected at 3.3 mg/L which is below the maximum contaminant level(MCL) <br /> of 10 mg/L set by the United States EPA.The presence of nitrate in groundwater is not uncommon in <br /> shallow groundwater aquifers in San Joaquin County and other parts of the Central Valley. <br /> DBCP was detected at 0.29 ug/L, which is slightly above the maximum contaminant level the <br /> applicable of 0.29 set by the United States EPA.DBCP is a nematocide and soil fumigant for crops.The <br /> use of DBCP was discontinued in 1979. <br /> Conclusions <br /> In summary,DBCP was detected at 0.29 ug/L,which is slightly above the MCL of 0.2 ug/L set by the <br /> EPA and Nitrate (as Nitrogen) was detected at 3.3 mg/L,which is below the MCL of 10 mg/L set by <br /> the EPA. <br /> Daniel E. Kramer, President <br /> Professional Geologist 8657 <br /> Certified Engineering Geologist 2588 <br /> Professional Geophysicist 1078 <br /> Attachment A-Analytical Laboratory Analysis Results <br /> Cc: Sandie Richards <br /> Petralogix Engineering,Inc <br /> 26675&cella Road,Gait,Ca 95632 <br /> (209)-400-5729 <br /> www.petralogix.com <br />