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L `, November 29,2005 NOA Project Number: E05003B _ Table 3. San Joaquin County Soil Survey Selected Soil Properties of On-Site Soils. Soil Name Depth Unified Soil Classification Salinity Soil Penne- Septic tank and Map (in) mmhos/cm Reaction ability absorption Symbol pH (in/hr) fields V Tumin 0-28: Loamy coarse sand;SM <2 6.1-7.8 6.0-20 Droughty: loamy 28-53: Loamy coarse sand,loamy sand; <2 6.1-7.8 6.0-20 fast intake. coarse SM <2 6.6-8.4 6.0-20 sand,0-2% 53-75: Loamy coarse sand,loamy sand, slopes,255. sand;SM Veritas fine 0-15: Fine sandy loam;SM,SC-SM <4 7.4-8.4 2.0-6.0 Moderate: sandy loam, 15-54: Sandy loam,fine sandy loam;SM, <4 7.4-8.4 2.0-6.0 flooding, 0-2% SC-SM cemented slo es,266. 5470: Cemented --- --- --- pan Note:The table descriptions do not necessarily reflect site-specific soil properties. L5.1 Soil Boring Locations A total of one soil boring was advanced on the Site to a depth of about three and a half feet. The soil boring was used later for a percolation test hole;the location of the boring is indicated in Plate 1. 5.2 Soil Boring Dimensions The soil boring was about three and a half feet deep and was four inches in diameter. L 5.3 Soil Lithology Observed Generally,the soil encountered in the boring is similar to the soils reported by the San Joaquin LCounty Soil Survey for the area (USDA, 1992).Tables 4 presents the soil log for the boring. Table 4. Soil Boring Log for P-1. Depth Interval(ft) Soil Type Unified Soil Classification 1 0-3 Brown,moist,sil medium to fine sand SM L L5.4 Discussion of Soil Lithology A visual inspection of the shallow soils from on-site drilling indicates potential for percolation ` because of the sandy nature of the soils. A percolation test is the best method to determine the it 7 L '404 L