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i, February 6,2006 <br /> NOA Project Number: E05173A <br /> ` Soil Name Depth Unified Soil Classification Salinity Soil Perme- Septic tank <br /> and Map (in) mm n Reaction ability absorption <br /> Symbol cm pH (in/hr) fields <br /> Capay Clay, 0-20: Clay:CH,CL <4 6.6-8.4 0.06-0.2 Severe:peres <br /> wet,0-2% 20-44: Clay,silty clay:CH,CL <4 6.6-8.4 0.06-0.2 slowly <br /> slopes,121 4460: Silty clay loam,clay loam: CL <4 6.6-8.4 0.06-0.2 <br /> ` Note:The table descriptions do not necessarily reflect site-specific soil properties. <br /> 15.1 Soil Boring Locations <br /> Six borings were drilled to a depth of approximately three and a half feet by NAT nes, <br /> Modesto, California. The soil borings were later used as percolation test holes;s e Plate 1 d the <br /> LPercolation Test Forms in the appendix for the boring locations. <br /> 5.2 Soil Boring Dimensions <br /> LThe shallow soil borings were between four and six inches in diameter. <br /> L 5.3 Soil Lithology Observed <br /> Generally, the soil encountered in the borings is similar to the soil reported by the San Joaquin <br /> LCounty Soil Survey for the area (USDA, 1992). Fable 5 presents the soil logs for the borings on the <br /> subject property. <br /> i Table 5. <br /> 6. Soil Boring Log for Parcels 1-6. <br /> Depth Interval(k) Soil Type Unified Soil Classification <br /> 0-3.5,max de th I Dark Brow�cla• SC <br /> 5.4 Discussion of Soil Lithology <br /> A silty clay soil type generally has a low potential for percolation. A percolation test is the best <br /> method to determine the suitability of the soils for a septic disposal area. Please see the next section <br /> L for percolation test results. Generally speaking, coarser grained soils have much greater potential for <br /> percolation than fine-grained soils. <br /> 6.0 PERCOLATION TEST INFORMATION <br /> 6.1 Percolation Test Locations <br /> A site map indicating the locations of the percolation test holes is included a Plate;l o this report. <br /> 6a <br /> 7 <br /> L .,44 <br /> r <br />