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Depalma Property Page 4 of 12 <br /> Our Project Number: LG5080003 <br /> 3anuary 31, 2008 <br /> 4.5 Well Water Sample Collection, Handling, and Transportation <br /> The sample for nitrate was collected in a sterile plastic container; the sample for DBCP was <br /> collected in two sterile glass vials. The samples were then transported on ice and remanded <br /> under chain of custody to FGL Environmental, Stockton. <br /> 4.6 Chain of Custody <br /> The Chain of Custody document has been included in the appendix of this report. <br /> 5.0 SOIL PROFILE AND GEOLOGIC INFORMATION <br /> The Site is depicted on the USGS Preliminary Geologic Map Quaternary Modesto Formation. This <br /> unit is made up of undifferentiated alluvial deposits, mainly arkosic, forming the toe of the <br /> Mokelumne alluvial fan generally covered by 0.3 to 1.0 meters of Holocene intertidal deposits <br /> (Plate 5). <br /> The surface and near surface soils located at the Site are reported by the San Joaquin County <br /> Soil Survey to be composed of Delhi loamy sand and Honcut sandy loam, both 0-2% slopes <br /> (Plate 6) (USDA, 1992). The table below presents some selected properties of these soils: <br /> Table 1. <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 /> and Map (in) (mmhos/cm) Reaction ability absorption <br /> Symbol pH (in/hr) fields <br /> Delhi, 0- 0-16 Loamy sand; SM <2 6.1-7.8 6.0-20 Severe: <br /> 2% slopes, 16-26 Loamy sand, loamy fine <2 6.1-7.8 6.0-20 Poor Filter <br /> 142 sand; SM <br /> 26-60 Sand, loamy sand, fine <2 6.1-7.8 6.0-20 <br /> sand; SP-SM, SM <br /> _ Honcut 0-21 Sandy loam; SM <2 6.1-7.3 2.0-6.0 Slight <br /> 2% slopes, 21-60 Coarse sandy loam sandy <2 6.1-7.8 2.0-6.0 <br /> 175 loam; SM <br /> 5.1 Soil Boring Locations <br /> A total of two (2) soil borings were advanced o the Site, both borings to a depth of <br /> approximately three and a half feet. The soil borings ere used later for percolation test holes; <br /> the locations of the borings are indicated in Plate 1. <br /> i <br /> 902 Industrial Way•Lodi,CA 95240•209.367.3701 •Fax 209.369.4228 02008 Neil O.Anderson&Associates,Inc <br />