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Soil Borings Throughout the month of September 2020, Mike Berg of Berghill, LLC excavated shallow soil borings on each parcel of the Site for Live Oak to use when conducting the percolation tests. The borings were nine inches in diameter, 3.19 to 3.50 feet deep, and were excavated by bobcat-mounted continuous flight auger. Because of the variability of soils on the Site, Mr. Berg excavated several borings on many of the parcels, which Live Oak evaluated to select the best percolation test locations. The locations of the selected borings are indicated on Plate 11. The soil in the borings was generally similar to that described by the Soil Survey, with significant variation observed from one location to the next. At the test location on Parcel 1, clayey sand with gravel was observed to the full depth of the hole (Plate 12). At the test location on Parcel 2, sandy silt was observed to the full depth of the hole (Plate 13). At the test location on Parcel 3, sandy clay was observed to three feet below ground surface (bgs), followed by silty clay to the full depth of the hole (Plate 14). At the test location on Parcel 4, silty sand with clay was observed to the full depth of the hole (Plate 15). At the test location on Parcel 5, silty sand was observed to three feet bgs, followed by silty coarse sand with clay to the full depth of the hole (Plate 16). At the test location on Parcel 6, sandy silt was observed to the full depth of the hole (Plate 17). At the test location on Parcel 7, sandy silt was observed to two feet bgs, followed by silty sand to the full depth of the hole (Plate 18). At the test location on Parcel 8, clayey silt with gravel and cobbles was observed to three feet bgs, followed by clay to the full depth of the hole (Plate 19). Discussion of Soil Lithology Based on the soils observed in the borings, there appears to be limited to moderate potential for percolation in the shallow soil zones at 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 A shallow percolation test was conducted on each proposed parcel of the Site. The soil borings discussed above were used for the percolation testing. Percolation test procedures conformed to San Joaquin County Environmental Health Department policy. LOGE 20-29 Page 6