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March 28,2005 <br /> NOA Project Number: E05007B <br /> DBCP was not detected in the water sample. DBCP is a nematocide and soil fizmigant for <br /> ` vegetables and grapes. It is thought to cause health problems consisting of kidney damage,liver <br /> damage,and cancer. The use of DBCP was discontinued in 1979. The Environmental Protection <br /> Agency (EPA) set the maximum contaminant limit (MCL) at 0.2 parts per billion (ppb) because the <br /> EPA believes that given present technology and resources,this is the lowest level to which water <br /> systems can reasonably be required to remove this contaminant should it occur in drinking water. <br /> ` 4.5 Well Water Sample Collection, Handling, and Transportation <br /> The samples were collected in a clean plastic container, then decanted into clean,glass vials. The <br /> samples were then transported on ice and remanded under chain of custody to Precision Enviro- <br /> Tech, Stockton. <br /> 4.6 Chain of Custody <br /> The Chain of Custody document has been included in the appendix of this report. <br /> r <br /> 5.0 SOIL PROFILE AND GEOLOGIC INFORMATION <br /> The Site is depicted on the Preliminary Geologic Map of the San Francisco - San Jose Cenozoic <br /> Quadrangle,as within a region of Quaternary Fan deposits. The unit consists of gravel, sand silt and <br /> ion clay (Plate 3). <br /> The surface and near surface soils located at the Site are reported by the San Joaquin County Soil Survey <br /> b" to be composed of the Capay clay,wet,0-2% slopes and the Vernalis clay loam,wet, 0-2% slopes <br /> (Plate 4) (USDA, 1992). Table 3 presents some selected properties of the soils: <br /> 60 <br /> bw <br /> L <br /> 60 <br /> Im <br /> No <br /> 6 <br /> ba "044 <br /> bn <br />