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15999 W CORRAL HOLLOW RD Project No.2019-00027 Page 13 <br /> Table 1. <br /> San Joaquin County Soil Survey <br /> Elected Soil Properties of On-Site Soils <br /> Soil Name Depth Salinity Soil Perme- Septic tank <br /> -Map p Unified Soil Classification mmhos/ Reaction ability absorption <br /> Unit 275 (�n) cm pH (in/hr)** fields <br /> 0-3: Sandy loam; SM <2 7.4-8.4 Moderately Very <br /> Wisflat 3-10: Gravelly sandy loam;SP <2 7.4-8.4 Rapid limited; <br /> --- Permeability <br /> 10-14: Bedrock; --- --- depth tobedrock <br /> 0-6: Loam <2 7.4-8.4 Moderate Very <br /> Arburua 6-22: Loam <2 7.9-8.4 Permeability limited; <br /> 22-28: Bedrock --- --- depth to <br /> bedrock <br /> 0-5: Sandy loam; SM <2 7.4-8.4 Moderately Very <br /> San Rapid limited; <br /> 5-22: Sandy loam;SM <2 7.9-8.4 <br /> Timoteo Permeability depth to <br /> 22-26: Weathered bedrock; --- --- bedrock <br /> -1L LNote:The table descriptions do not necessarily reflect site-specific soil properties. <br /> *See description of the map unit for composition and behavior characteristics of the map unit <br /> **Soil Data Explorer,https://casoilresource.lawr.ucdavis.edu/sde/?series=wisflat <br /> Associated plates showing soil type and geology are attached to our concurrent SSS report. <br /> 2.2 Mass Transport Soil Properties <br /> f <br /> Layered soils and sediments with shal1ow bedrock profiles consisting of hard rock sandstone and <br /> such cemented material types as reporte or t e site, typically provide a degree of protection <br /> between perco a t oun water aquifers. Soils of this type do not <br /> typically present a high risk of excessive mass transport of nitrate or other constituents of concern <br /> considering both the deep groundwater profiles and onsite bedrock at near surface depths. <br /> 3.0 GROUNDWATER ANALYSIS <br /> 3.1 Groundwater Depth and Gradient <br /> The San Joaquin County Flood Control and Water Conservation District(2016)groundwater reports <br /> were reviewed to determine the groundwater levels near the Site. The Spring 2016 and Fall 2016 <br /> maps are the most current official maps available from the County. According to these maps, <br /> groundwater elevation lies between 65 and 80 feet above mean sea level. The elevation of the land, <br /> as previously mentioned in Section 1.1, is approximately 1020 feet above mean sea level. Based on <br /> this,the depth to groundwater(the difference between the elevation of the Site and the elevation of <br /> Petralogix Engineering,Inc. na <br /> 26675 Bruella Road,Galt,Ca 95632 <br /> (2091-400-5729 w <br /> www.petralogix.com �a <br />