Laserfiche WebLink
L <br /> LNovember 9,2005 <br /> NOA Project Number: E05118B <br /> LDBCP is a nematocide and soil fumigant for vegetables and grapes. It is thought to cause health <br /> problems consisting of kidney damage,liver damage,and cancer. The use of DBCP was j <br /> discontinued in 1979. The Environmental Protection Agency (EPA) set the maximum contaminant <br /> L <br /> limit (MCL) at 0.2 parts per billion (ppb) because the EPA believes that given present technology <br /> and resources,this is the lowest level to which water systems can reasonably be required to remove <br /> Lthis contaminant should it occur in drinking water. <br /> Any new water wells installed on the property should have a water quality test performed prior to <br /> Ldrinking the water. <br /> L5.0 SOIL PROFILE AND GEOLOGIC INFORMATION <br /> The Site is depicted on the Preliminary Geologic Map of the San Francisco -San Jose Quadrangle, <br /> L California (1991) and is within a region of Quaternary Fan deposits. The unit is composed of gravel, <br /> sandy silt and clay (Plate 3). <br /> The surface and near surface soils located at the Site are reported by the San Joaquin Coundy Soil Surmy <br /> to be composed of the Capay clay, 0-2% slopes and Vernalis clay loam, 0-2%slopes (Plate 4) <br /> (USDA, 1992). Table 2 presents some selected properties of the soils: <br /> Table 2. <br /> San Joaquin County Soil Survey <br /> Selected Soil Properties of On-Site Soils. <br /> Soil Depth Unified Soil Classification Salinity Soil Petme- Septic tank <br /> Name (in) mmhos Reaction ability absorption <br /> and Map /cm pH (in/hr) fields <br /> Symbol <br /> Capay 0-20: Clay:CH,CL <2 6.6-8.4 0.06- Severe:peres <br /> Clay,0- 20-60: Clay,silty clay:CL,CH <2 6.6-8.4 0.2 slowly <br /> 2%slopes, 0.06- <br /> 118. 0.2 <br /> LVemalis 0-9: Clay loam:CL <2 6.6-8.4 0.2-0.6 Severe:Peres <br /> Clay 9-47: Loam,silt loam,clay loam:CL,CL-ML <2 7.4-8.4 0.6-2.0 slowly <br /> Loam,0- 47-60: Stratified sandy loam to silty clay loam: <2 7.9-8.4 0.6-2.0 <br /> 2%slopes, CL,CL ML <br /> �. 268 <br /> Note:The table descriptions do not necessarily reflect site-specific soil properties. <br /> v <br /> 6 <br />