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BCP was not deteete the water sample. DBCP is a nematocide and soil fumigant <br /> for vegetables and- es. It is known to cause male reproductive effects and is <br /> classified as a probable human carcinogen. Most domestic use of DBCP was <br /> discontinued in 1977 through 1979. The US EPA set the MCL at 0.2 parts per billion <br /> (ppb, equivalent to µg/L) because it believes that given present technology and <br /> resources, this is the lowest level to which water systems can reasonably be required to <br /> remove this contaminant should it occur in drinking water. The Maximum Contaminant <br /> Level Goal (MCLG) for DBCP is zero. <br /> The laboratory analytical results are attached as Appendix 5 of this report. <br /> Soil Profile and Geologic Information <br /> The Site is depicted on the Preliminary Geologic map of Cenozoic Deposits of the <br /> Bellota Quadrangle, California (Marchand and Bartow, 1979). The Site is depicted <br /> within map units of the Laguna Formation and Turlock Lake Formation, with a small <br /> area of undifferentiated alluvium and colluvium on the southern side of the Site. The <br /> Laguna Formation unit is described as "arkosic gravel, sand, and silt with some <br /> interbedded volcanic detritus derived from the Mehrten Formation_" The Turlock Lake <br /> Formation is described as "arkosic alluvium, probably glacial outwash... chiefly sand <br /> with some silt and minor gravel." (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 Montpellier-Cometa complex, Redding gravelly loam, <br /> and Yellowlark gravelly loam (Plate 8) (USDA, 2014)_ The table below presents some <br /> selected properties of these soils: <br /> Table 1. Selected Properties of On-Site Soils (USDA, 1992) <br /> Soil Name Depth Unified Soil Salinity Soil Perme- Septic tank <br /> and Map (in) Classification mmhos/cm Reaction ability absorption <br /> Symbol pH (in/hr) fields <br /> Montpellier, 0-20: Coarse sandy loam; SM <2 5.6 - 7.3 2.0 - 6.0 Severe: <br /> J- 5-8% 20-43: Sandy clay loam; SC <2 5.6 - 7.3 0.2 - 0.6 peres slowly 555 <br /> slopes, 200 43-55: Coarse sandy loam; SM <2 6.6 - 7.3 0.2 - 0.6 <br /> /, 1) 55-60: Sandy loam, coarse, <2 6.1 - 7.3 <0.06 <br /> sandy loam; SM }} <br /> .>3J <br /> Cometa, 0-22: Sandy loam; SM, SC-SM <2 5.6 - 6.5 0.6 - 2.0 Severe: <br /> 5-8% 22-36: Sandy clay, clay, clay <2 6.1 - 7.3 <0.06 peres slowly <br /> slopes, 200 loam; CL, CH <br /> 36-60: Stratified sandy loam to <2 6.6 - 7.3 <0.06 <br /> sandy clay loam; SM, <br /> SC-SM, Sc <br /> '� LOGE 1402 Page 5 <br />