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IDBCP was not dete ted in the sample. DBCP is a nematocide and soil fumigant for <br /> vegetables and gr s. It is known to cause male reproductive effects and is classified <br /> as a`­pro Ii6man carcinogen. Most domestic use of DBCP was discontinued in <br /> 1977 through 1979. The US EPA set the MCL at 0.2 parts per billion (ppb, equivalent to <br /> lkg/L) because it believes that given present technology and resources, this is the lowest <br /> level to which water systems can reasonably be required to remove this contaminant <br /> should it occur in drinking water. The Maximum Contaminant Level Goal (MCLG) for <br /> DBCP is zero <br /> Soil Profile and Geologic Information <br /> The Site is mapped on the Preliminary geologic map of Cenozoic deposits of the Bellota <br /> quadrangle. California (Marchand and Bartow, 1979). It is depicted within map units <br /> identified as Mehrten Formation, "andesitic conglomerate, sandstone, mucistone, and <br /> lahars," and Laguna Formation, "arkosic gravel, sand, and silt with some interbedded <br /> volcanic detritus derived from the Mehrten Formation" (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 Hicksville loam, Hicksville gravelly loam, Montpellier- <br /> Cometa complex, Pardee cobbly loam, Pentz sandy loam, and Pentz-Bellota complex <br /> (Plate 8) (USDA, 2012). The table below presents some selected properties of these <br /> soils: <br /> Table 1. Selected Properties of On-Site Soil (USDA, 1992) <br /> Soil Name Depth Unified Soil Salinity Soil Perme- Septic tank <br /> and Map (iReaction ability absorption <br /> Symbol n) Classification mmhoslcm pH (in/hr) fields <br /> Hicksville 0-15 Loam; CL-ML, ML <2 5.6 - 6.5 0.6-2.0 Severe: <br /> loam, 15-36 Clay loam, sandy clay <2 6.1 - 7.8 0.2-0.6 flooding, <br /> 170 loam; CL, SC peres slowly <br /> 36-60 Sandy clay loam, sandy <2 6.6 - 7.8 0.6-2.0 <br /> loam; SC-SM, SM <br /> Hicksville 0-13 Gravelly loam; SC-SM, <2 5.6- 6.5 0.6-2.0 Severe. <br /> gravelly SM, GM-GC, GM flooding, <br /> loam, 13-36 Gravelly clay loam, <2 6.1 -7.8 0.2-0.6 peres slowly <br /> 172 gravelly sandy clay <br /> loam, SC-GC <br /> 36-60 Stratified very gravelly <2 6.6- 7.8 0.2-0.6 <br /> loamy sand to clay <br /> loam; GM-GC, GM <br /> LOGE 1323 Page 5 <br />