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Table 1. Selected Properties of On-Site Soils (USDA, 1992) <br /> Soil Name Depth Unified Soil SalinitSoil Perme- Septic tank <br /> y <br /> and Map Reaction ability absorption <br /> Symbol (in) Classification mmhos/cm pH (in/hr) fields <br /> Capay Clay, 0-20: Clay: CH, CL <2 6.6- 8.4 0,06 -0.2 Severe: <br /> 0-2% 20-60: Clay, silty clay: CL, CH <2 6.6 - 8.4 0.06-0.2 peres slowly <br /> slopes, 118 <br /> Capay Clay, 0-20: Clay; CH, CL <4 6.6 - 8.4 0.06 -0.2 Severe: <br /> wet, 0-2% 20-44: Clay, silty clay: CH, CL <4 6.6 - 8.4 0.06 -0.2 peres slowly <br /> slopes, 121 44-60: Silty clay loam, clay <4 6.6 - 8,4 0.06 - 0.2 <br /> loam: CL <br /> Stomar clay 0-17: Clay loam, CL <2 6.6 - 7.3 0.2 - 0.6 Severe: <br /> loam, 0-2% 17-47: Clay loam, clay, CL, CH <2 6.6 - 8.4 0.06 - 0.2 peres slowly <br /> slopes, 252 47-60: Clay loam, silty clay <2 7.4 - 8.4 0.2 - 0.6 <br /> loam, CL <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 /> Soil Borings <br /> On May 3, 2010, Live Oak excavated one shallow soil boring on the Site for the purpose <br /> of conducting a percolation test. The boring was four inches in diameter, 3.5 feet deep, <br /> and was excavated by hand auger. The boring location is indicated on Plate 2. <br /> The soil in the boring was similar to that described above by the Soil Survey; brown lean <br /> clay was observed to the maximum depth of the boring (3.5 feet). The log for the soil <br /> boring is presented in Plate 9. <br /> Discussion of Soil Lithology <br /> Based on the soils observed in the boring, there appears to be moderate potential for <br /> percolation. Sandy soils generally have a much greater potential for percolation than <br /> fine-grained or cemented soils. However, a percolation test is the only accepted <br /> method for determining the suitability of the soils for a septic disposal area. Percolation <br /> test results are discussed in the following section. <br /> Percolat' Test <br /> COne shallo percolation test was conducted on the Site; the shallow soil boring <br /> discuss above was used for the percolation test hole (Plate 2). Percolation test <br /> p dures conformed to San Joaquin County Environmental Health Department policy. <br /> LOGE1008 Page 4 <br />