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Thornton On-site Waste Water Feasibility Study Page 3 of 9 <br /> Our Project Number: 2017-00010 <br /> December 1, 2017 <br /> Table 1. <br /> San Joaquin County Soil Survey <br /> Elected Soil Properties of On-Site Soils <br /> Soil Salinity Soil Perme- Septic tank <br /> Name Depth Unified Soil mmhos/ Reaction ability absorption <br /> and Map (in) Classification cm pH (in/hr) fields <br /> Symbol <br /> 0-8: Silt loam; CL-ML, ML <2 6.1 -7.3 0.6-2.0 <br /> Sailboat 8-23: Stratified sandy loam to <2 6.6-7.4 0.2 -0.6 <br /> silt loam, silty clay loam; CL-ML, CL Severe: peres <br /> 234 <br /> slowly <br /> Stratified sandy clay loam <br /> 23-61: <2 7.4-8.4 0.2 -0.6 <br /> to silty clay loam; CL <br /> Note: The table descriptions do not necessarily reflect site-specific soil properties. <br /> 2.2 Regional and Site-Specific Groundwater <br /> The San Joaquin County Flood Control and Water Conservation District (Fall and Spring, <br /> 2016) groundwater reports were initially reviewed to determine the groundwater levels <br /> near the site, however, the site location does not fall within the groundwater elevation <br /> map contours (refer to our NLS study). Based on a review of well data information at <br /> the California Department of Water Resources (DWR) Water Data Library4 online data <br /> base, as well as DWR's GeoTracker5 website, the site is estimated to have a depth to <br /> groundwater of approximately 5 to 9 feet bgs and a flow_direction of west/southwest. <br /> Based on the lack of data for the area, a gradient has not been determined, although it <br /> is anticipated to be a shallow based on the relatively flat topography. <br /> 3.0 QUANTITY OF WASTEWATER FROM PROPOSED PROJECT <br /> The following table presents the septic waste water uses associated with the site (the <br /> maximum average daily flows). The rates presented from the references provide general <br /> guidance but do not always reflect a match in usage. Careful examination, professional <br /> judgement, and experience are necessary to select a reasonable flow rate estimate <br /> 4 http://www.water.ca.gov/waterdatatibrary/Accessed November 18,2017. <br /> 5 http://Peotracker.waterboards.ca.gov/ Accessed November 18,2017. <br /> Petralogix Engineering,fnc_ <br /> 26675 Bruc71+)Rrrad,Galt.Ca 95632 <br /> f2CG 1-400-5729 <br /> %"vw.pLtralo 3ix.Cam <br />