Laserfiche WebLink
Waddell Property Page 4 of 8 <br /> NOA Job Number: E07156A <br /> November 1, 2007 <br /> 5.0 SOIL PROFILE AND GEOLOGIC INFORMATION <br /> The site is depicted on the USGS Preliminary Geologic Map as Quaternary Modesto Formation <br /> Upper Member (Qm2f) (Plate 7). The unit is described as foothill-derived alluvial silt, clay, and <br /> minor sand forming terraces, upper fans and following distributaries across lower fans; <br /> abundant volcanic detritus. <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 Finrod clay loam, with 0 to 2 percent slopes (Plate 8) (USDA, <br /> 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 <br /> and Map (in) (mmhos/cm) Reaction ability tank <br /> Symbol pH (in/hr) absorpti <br /> on fields <br /> Finrod clay 0-8 Clay loam; CL <2 6.6-7.8 2.0-0.6 Severe: <br /> loam, 0-2% 8-33 Clay loam, clay; CL, CH <2 6.6-7.8 0.06-0.2 peres <br /> slopes, 158. 33-48 Clay loam, silty clay loam, clay; <2 7.4-8.4 0.06-0.2 slowly <br /> _ CL, CH <br /> 48-60 Cemented <br /> 5.1 Soil Boring Locations <br /> A total of four (4) soil borings were advanced on the site, two (2) borings to an approximate <br /> depth of 25 feet and (2) borings to an approximate depth of 3 feet. The soil borings were used <br /> later for percolation test holes; the locations of the borings are indicated in Plate 1. <br /> 5.2 Soil Boring Dimensions <br /> As noted above, the soil borings were approximately 3 and 25 feet deep, respectively, and they <br /> were approximately 4 inches in diameter. <br /> 5.3 Soil Lithology Observed <br /> Generally, the soils encountered in the borings were similar to the soils reported by the San <br /> Joaquin County Soil Survey for the area (USDA, 1992). The table below presents the soil log for <br /> the 25 foot deep soil borings. Conditions were comparable in the shallower holes. <br /> 902 Industrial Wav•Lodi.CA 95240•2093673701 •Fax?_09 169 4??R rr,?nn7 AL,;/n A.,4------0- -- <br />