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Soil Profile and Geologic Information The Site is depicted on the Preliminary Geologic map of Cenozoic Deposits of the Bellota Quadrangle, California (Marchand and Atwater, 1979). The Site is depicted within the Laguna Formation map unit, with a small area on its eastern side falling within the North Merced Gravel map unit (Plate 7). The Laguna Formation is described as "arkosic gravel, sand, and silt with some interbedded volcanic detritus derived from the Mehrten Formation." The North Merced Gravel map unit is described as "thin, locally- derived pediment gravel cappings over Tertiary deposits." The surface and near surface soils located at the Site are reported by the USDA Web Soil Survey to be composed of Redding gravelly loam and Redding loam (Plate 8) (USDA, 2009). The table below presents some selected properties of these soils: Table 1. Selected Properties of On-Site Soils (USDA, 1992) Soil Name Depth Unified Soil Salinity Soil Perme- Septic tank and Map Reaction ability absorption Symbol (in) Classification mmhos/cm pH (in/hr) fields Redding 0-6 Loam; CL-ML, CL <2 5.1-6.5 0.6-2.0 Severe: loam, 0-3% 6-27 Loam, clay loam, <2 5.1-6.5 0.2-0.6 cemented slopes, gravelly loam; CL-ML, pan 219 CL 27-30 Clay loam, clay, <2 5.1-6.5 <0.06 gravelly clay; CL, CH 30-60 Indurated --- --- Redding 0-7: Gravelly loam; SC, SC- <2 5.1 -6.5 0.6 -2.0 Severe: gravelly SM, GC, GM-GC. cemented loam, 2-8% 7-16: Gravelly loam, gravelly <2 5.1 - 6.5 0.2 - 0-6 pan slopes, 220. clay loam; CL, CL-ML, GC, GM-GC 16-22: Clay, clay loam, CH, CL <2 5.1 - 6.5 <0.06 22-60: Indurated 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 September 2 through 6, 2011, Live Oak excavated one shallow soil boring on each of the proposed parcels on the Site for the purpose of conducting percolation tests (two J; borings total). The borings were four inches in diameter, 3.10 and 3.20 feet deep, and were excavated by hand auger (Table 2). The boring locations are indicated on Plate 2. j The soil in the borings was similar though less clayey than that described by the Soil Survey. For boring P1 the soil was cemented reddish brown silty, sandy gravel for the full depth of the hole. For boring P2, the same soil was present to 2 feet depth, after LOGE 1104 Page 5