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L Traylor Shea Precast Page 5 of 14 <br /> Our Project Number: E071*B <br /> November 29, 2007 <br /> L <br /> NOA is concurrently preparing _1�hase I Environmental Site Assessmor the Site; the <br /> assessment has identified an open leak-i g-underground store tank case to the northwest of <br /> 2) the Site; ground water in the area Fias-been impacted. <br /> LI.4.3 Water Sample Location <br /> No wells exist on the Site. No well permits for the Site were found during file review at EHD on <br /> November 19, 2007. <br /> No water samples were collected for use in this study. <br /> LI.5 Soil Profile and Geologic Information <br /> L The Site is depicted on the USGS Geologic Map of the Sacramento-San Joaquin Delta, <br /> California, 1982. The map shows the Site to consist of alluvium of the Calaveras River and <br /> vicinity, composed of Holocene and/or upper Pleistocene material (Plate 7). <br /> LThe surface and near surface soils located at the Site are reported by the San Joaquin County <br /> Soil Survey to be composed of Jacktone clay, 0-2% slopes (Plate 8) (USDA, 1992). <br /> LThe following table presents some selected properties of the soils: <br /> Table 3. <br /> ` San Joaquin County Soil Survey <br /> Selected Soil Properties of On-Site Soils. <br /> ' Soil Name Depth Unified Soil Classification Salinity Soil Perme- Septic tank <br /> L and Map (in) (mmhos/cm) Reaction ability absorption <br /> / Symbol pH (in/hr) fields <br /> r Jacktone 0-22: Clay; CL,CH <2 6.6-8.4 0.06-0.2 Severe: <br /> clay, 0-2% 22-34: Clay loam, clay, silty clay; CL, <2 7.9-9.0 0.06-0.2 cemented <br /> slopes, 180. CH pan. <br /> 34-37: Indurated --- --- --- <br /> L 37-46: Loam,clay loam; CL-ML, CL <2 7.9-9.0 0.2 .0.6 <br /> 46-60: Cemented <br /> I.5.1 Soil Boring Locations <br /> r <br /> One soil boring was advanced on the Site to a depth of 3.25 feet. The soil boring was used <br /> Llater for a percolation test hole; the location of the boring is indicated in Plate 1. l " <br /> I.5.2 Soil Boring Dimensions <br /> LThe soil boring was 3.25 feet deep, as noted above, and four inches in diameter. L� <br /> I. <br /> f <br /> V <br /> L902 Industrial Way•Lodi,CA 95240-209.367-3701 •Fax 209.369.4228 ®2007 Nei(O.Anderson&Associates,Inc <br />