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12430 E.ATKINSON ROAD Project No.2017-00002 Page 17 <br /> 1 <br /> Soil Name' Depth Salinity Soil Perme- Septic tank and Map P Unified Soil Classification mmhos/ Reaction ability absorption <br /> Symbol (1D) cm pH (in/hr) fields <br /> 149 28-80: Indurated; --- --- --- <br /> Severe: <br /> Galt clay, 0-25: Clay; CL,CH <2 6.6- 7.3 0.06-0.2 cemented <br /> 160 2S-34: Clay,Silty clay; CL,CH <2 6.6-8.4 0.06-0.2 pan,peres, <br /> 34-60 Cemented,--- _ slowly. <br /> Note:The table descriptions do not necessarily reflect site-specific soil properties. <br /> *See description of the map unit for composition and behavior characteristics of the map unit <br /> Three four-inch diameter soil borings were advanced on each site.Due to the likely unfavorable sail <br /> ' for septic system percolation conditions located on each parcel, per the San Joaquin County Soil <br /> Survey(USDA, 1992) it was determined deep percolation test holes would be necessary.Therefore, <br /> each site consisted of three borings each, one shallow (36"-42"), one deep (25') and one to a soil <br /> stratum considered most likely to meet the minimum percolation rate for pittesting.The soil borings <br /> at 12401 E.Atkinson were advanced to a depth of 3.10 feet,6.37 feet,and 24.41 feet. The soil borings <br /> at 12420 E. Atkinson were advanced to a depth of 3.42 feet, 19.96 feet, and 24.60 feet. The soil <br /> ' borings at 12430 E.Atkinson were advanced to a depth of 3.34 feet,21.57 feet,and 24.57 feet. Each <br /> soil boring was subsequently used for a percolation test hole; the location of the test borings are <br /> indicated in Plate 2. Generally,the soil encountered in the boring is similar to the soils reported by <br /> the San Joaquin County Soil Survey for the area (USDA, 1992). The table below presents the soil log <br /> 1 for each site's deep soil boring. <br /> Table 4. <br /> Soil Boring Logs <br /> Depth Interval (ft) Soil Type Unified Soil Classification <br /> ' 12401 E.Atkinson Road <br /> 0-5 Brown,dry,sandy loam SM <br /> I <br /> 5-8 Reddish yellow,dry,sandy SM <br /> loam <br /> 8-25 Brown,dry,clay CL <br /> 12420 E.Atkinson Road <br /> 0-17 Brown, dry,clay CL <br /> 17-22 Light brown,dry,clay with CL <br /> sand <br /> 22-25 Reddish brown, dry,clay CL <br /> 12430 E.Atkinson Road <br /> ' 0-18 Brown,dry, clay77 CL <br /> ' Petralogix Engineering,Inc. _ <br /> 26675 Bruella Road,Gah,Ca 95632 <br /> (209)4065729 <br /> w .petralogix.com <br />