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i <br /> W <br /> The sample was placed on ice and transported under chain of custody to FGL . <br /> Environmental, Stockton. Results of the tests are forthcoming. <br /> Nitrate is commonly detected in shallow ground water aquifers of the Central Valley. <br /> Application of fertilizers, livestock waste, and untreated septic tank waste can all <br /> contribute to nitrate in ground water. Nitrate is mobile and tends to accumulate in <br /> shallow ground water zones. Based on work in the Sacramento Valley from the early <br /> 1900s, it is estimated that under "na aditions, grounder r contains nitrate at <br /> concentrations no more then abou 13.5 /L-NO3 3 mg/L- Nitrate may be r <br /> increasing in areas with concentrations o 4.75 mg/L-NO3 (5.5 mg/L-N) or more (Hull, <br /> 1984). <br /> DBCP is a nematocide and soil fumigant for vegetables and grapes. It is known to <br /> cause male reproductive effects and is classified as a probable human carcinogen. <br /> Most do DBCP was discontinued in '1977 through 1979. The US EPA set <br /> the MCL at 0.2 parts er billion (ppb) because it believes that given present technology <br /> and reso es, t ' is the lowest level to which water systems can reasonably be <br /> required to remove this contaminant should it occur in drinking water. The Maximum <br /> Contaminant Level Goal (MCLG) for DBCP is zero. <br /> f <br /> Soil Profile and Geologic Information <br /> The Site is depicted on the Geologic Map of Califomia, San Jose sheet(Rogers, 1966). <br /> The Site is depicted within a map unit of recent Great Valley fan deposits (Plate 7). <br /> The surface and near surface soils located at the Site are reported by the USDA Web <br /> Soil Survey to be composed of Delhi loamy sand, 0 to 2 percent slopes, and Veritas fine <br /> sandy loam, 0 to 2 percent slopes (Plate 8) (USDA, 2009). The table below presents <br /> some selected properties of these soils: <br /> LOGE1010 Page 4 <br />