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Table 1. Selected Properties of On-Site Soils (USDA, 1992) Soil Name Depth Unified Soil Salinity Soil Perme- Septic tank and Map (in) Classification mmhos/cm Reaction ability absorption Symbol pH (in/hr) fields Tokay fine 0-19 Fine sandy loam; SM <2 6.1-7.8 2.0-6.0 Slight sandy loam, 19-45 Fine sandy loam, sandy <2 6.1-7.8 2.0-6.0 0-2% loam; SM slopes, 45-60 Fine sandy loam, sandy <2 6.1-8.4 2.0-6.0 256 loam, coarse sandy loam; SM Tujunga 0-22 Loamy sand; SW-SM, <2 6.1-7.3 6.0-20 Severe: loamy sand, SM, SP-SM poor filter 0-2% 22-67 Loamy sand, fine sand, <2 6.1-7.8 6.0-20 slopes, sand; SW-SM, SM, SP- 259 SM Note: The table descriptions do not necessarily reflect site-specific soil properties. See description of the map unit for composition and behavior characteristics of the map unit. Soil Borings On June 3 through 9, 2015, Live Oak excavated one or two soil borings on each proposed numbered parcel the Site for the purpose of conducting percolation tests. The borings were four inches in diameter, 3.15 to 8.10 feet deep, and were excavated by hand auger (Table 2). Shallow borings were advanced on six of the parcels, while both shallow and deep borings were advanced on three of the parcels due to soil conditions encountered. The locations of the borings are indicated on Plate 9. The soil in the borings was similar to that described by the Soil Survey. Sand-silt mixtures were encountered at the surface of all of the holes, followed in some holes by a layer of sand beginning at two to six feet below ground surface. The soil logs are presented on Plates 10 through 16. Discussion of Soil Lithology Based on the soil observed in the borings, there appears to be moderate to good potential for percolation in the test locations. Sandy soils generally have a much greater potential for percolation than fine-grained or cemented soils. However, a percolation test is the only accepted method for determining the suitability of the soils for a septic disposal area. Percolation test results are discussed in the following section. Percolation Test Shallow percolation tests were conducted on Parcels 2, 3, 4, 6, 7, and 8 of the Site. <6.2) Both shallow and deep percolation tests were conducted on Parcels 1, 5, and 9. The soil borings discussed above were used for the percolation test holes (Plate 9). ( &-9 Percolation test procedures conformed to San Joaquin County Environmental Health Department policy. LOGE 1505 Page 6