Laserfiche WebLink
Soil Profile and Geoloaic Information <br />The Site is depicted on the Preliminary geologic map showing Quaternary deposits of <br />the Lodi quadrangle, California (Marchand and Atwater, 1979). The Site is depicted <br />within a map unit of the Modesto formation upper member, described as "arkosic <br />alluvium forming Mokelumne River alluvial fan; chiefly sand; becoming finer -grained <br />toward fan toe; probably glacial outwash" (Plate 9). <br />The surface and near surface soils located at the Site are reported by the USDA Web <br />Soil Survey to be composed of Acampo sandy loam, Devries sandy loam, and Tokay <br />fine sandy loam (Plate 10) (USDA, 2021). The table below presents some selected <br />properties of these soils: <br />Table 1. Selected Properties of On -Site Soils (USDA, 1992) <br />Soil Name and <br />Depth <br />Unified Soil <br />Salinity <br />Soil <br />Perme- <br />Septic tank <br />Map Symbol <br />(in) <br />Classification <br />mmhos/cm <br />Reaction <br />ability <br />absorption <br />0-2% slopes, <br />sandy loam; SM <br />pH <br />(in/hr) <br />fields <br />Acampo sandy <br />0-19: <br />Sandy loam; SM <br /><2 <br />6.1 -7.8 <br />2.0-6.0 <br />Moderate: <br />loam, 0-2% <br />19-47: <br />Sandy loam, fine <br /><2 <br />6.6-8.4 <br />2.0-6.0 <br />cemented <br />slopes, 101 <br />sandy loam, coarse <br /><2 <br />6.1-7.8 <br />2.0-6.0 <br />pan <br />2% slopes, 256 <br />19-45: <br />sandy loam; SM <br />--- <br />--- <br />--- <br />47-49: <br />Indurated <br />--- <br />--- <br />--- <br />49-60: <br />Cemented <br />Devries sandy <br />0-13: <br />Sandy loam; SM <br /><2 <br />6.6-8.4 <br />2.0-6.0 <br />Severe: <br />loam, drained, <br />13-28: <br />Sandy loam, fine <br /><2 <br />6.6-8.4 <br />2.0-6.0 <br />cemented <br />0-2% slopes, <br />sandy loam; SM <br />pan <br />149 <br />28-80: <br />Indurated <br />--- <br />--- <br />--- <br />Tokay fine <br />0-19: <br />Fine sandy loam; <br /><2 <br />6.1-7.8 <br />2.0-6.0 <br />Slight <br />sandy loam, 0- <br />SM <br /><2 <br />6.1-7.8 <br />2.0-6.0 <br />2% slopes, 256 <br />19-45: <br />Fine sandy loam, <br />sandy loam; SM <br /><2 <br />6.1-8.4 <br />2.0-6.0 <br />45-60: <br />Fine sandy loam, <br />sandy loam, coarse <br />sandy loam; SM <br />Note: The table descriptions do not necessarily reflect site-specific soil properties. See description of the <br />map unit for composition and behavior characteristics of the map unit. <br />Soil Borings <br />On May 11, 2021, Live Oak excavated a shallow soil boring on the homesite parcel of <br />the Site for the purpose of conducting a percolation test. The boring was four inches in <br />diameter, 3.42 feet deep, and was excavated by hand auger (Table 2). The location of <br />the boring is indicated on Plate 11. <br />LOGE 2124 Page 5 <br />