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Table 1. Selected Properties of On-Site Soils (USDA, 1992) <br /> Soil Name Depth Unified Soil Salinity Soil Perme- Septic tank <br /> and Map /cm Reaction ability absorption <br /> Symbol (in) Classification mmhos pH (in/hr) fields <br /> Galt clay, 0- 0-25 Clay; CL, CH <2 6.6-7.3 0.06-0.2 Severe: <br /> 2% slopes, 25-34 Clay, silty clay; CL, CH <2 6.6-8.4 0.06-0.2 cemented <br /> 160 34-60 Cemented --- --- --- pan, peres <br /> slowly. <br /> Jacktone 0-22 Clay; CL, CH <2 6.6-8.4 0.06-0.2 Severe: <br /> clay, 0-2% 22-34 Clay loam, clay, silty <2 7.9-9.0 0.06-0.2 cemented <br /> slopes, clay; CL, CH pan, peres <br /> 180 34-37 Indurated --- --- --- slowly <br /> 37-46 Loam, clay loam; CL- <2 7.9-9.0 0.2-0.6 <br /> ML, CL <br /> 46-60 Cemented --- --- --- <br /> Note: The table descriptions do not necessarily reflect site-specific soil properties. See description of the map unit for <br /> composition and behavior characteristics of the map unit. <br /> Soil Borings <br /> On April 12 and 15, 2021, Live Oak excavated shallow and deep soil borings near the <br /> proposed septic disposal area of the Site for the purpose of conducting a percolation <br /> test. The borings were four inches in diameter, 3.14 and 13.49 feet deep, and were <br /> excavated by hand auger (Table 2). <br /> The location of the borings is indicated on Plate 10. <br /> The soil in the borings was similar to that described by the Soil Survey. Clay was <br /> encountered to approximately 5 feet below ground surface, followed by partially <br /> cemented sandy clay to the full depth of the hole. The soil log is presented on Plate 11. <br /> Discussion of Soil Lithology <br /> Based on the soil observed in the borings, there appears to be limited potential for <br /> percolation in the shallow soil zone, but somewhat better potential for percolation in the <br /> deeper soil zone at the test location. Sandy soils generally have a much greater <br /> potential for percolation than fine-grained or cemented soils. However, a percolation <br /> test is the only accepted method for determining the suitability of the soils for a septic <br /> disposal area. Percolation test results are discussed in the following section. <br /> LOGE 2122 Page 5 <br />