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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 Reaction ability absorption <br /> Symbol (in) Classification mmhos/cm <br /> Y pH (in/hr) fields <br /> Veritas fine 0-15 Fine sandy loam; SM, <4 7.4-8.4 2.0-6.0 Moderate: <br /> sandy loam, SC-SM flooding, <br /> 0-2% 15-54 Sandy loam, fine sandy <4 7.4-8.4 2.0-6.0 cemented <br /> slopes, loam; SM, SC-SM pan <br /> 266 54-70 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 January 14, 2019, Live Oak excavated a shallow soil boring in the proposed septic <br /> disposal area of the Site for the purpose of conducting a percolation test. The boring <br /> was four inches in diameter, 3.18 feet deep, and was excavated by hand auger (Table <br /> 2). <br /> Because of a problem with the first test hole, Live Oak excavated additional shallow and <br /> deep soil borings on January 22, 2019, in the proposed septic disposal area of the Site. <br /> The borings were four inches in diameter, 3.15 and 6.79 feet deep, and were excavated <br /> • by hand auger (Table 2). <br /> The locations of the borings are indicated on Plate 9. <br /> The soil in the borings was similar to that described by the Soil Survey. Sandy silt was <br /> encountered to 2.5 feet below ground surface, followed by cemented, silty, fine sand to <br /> a depth of 3.5 feet, followed by sandy silt to the full depth of the hole. The soil log is <br /> presented on Plate 10. <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 good potential for percolation in the deep soil <br /> zone. Sandy soils generally have a much greater potential for percolation than fine- <br /> grained or cemented soils. However, a percolation test is the only accepted method for <br /> determining the suitability of the soils for a septic disposal area. Percolation test results <br /> are discussed in the following section. <br /> • LOGE 1901 Page 4 <br />