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LiC E/NFEL DER <br /> Bright Reopie.Right 5111-15 <br /> as belonging to the Veritas fine sandy loam soil series (Map Symbol 266) and the Honcut sandy <br /> loam soil series (Map Symbol 175). Veritas soils have a rating of "somewhat limited" for septic <br /> tank absorption fields; whereas, Honcut soils have a rating of "very limited" for septic tank <br /> absorption fields. Other attributes are given in the table below: <br /> Map pH Available Water Organic Content, <br /> Symbol Soil Name Capacity, cm/cm percent <br /> 266 Veritas fine 0.11 7.9 0.42 <br /> sandy loam <br /> 175 Honcut sandy 0.11 7.1 0.26 <br /> loam <br /> 4.4 GROUNDWATER <br /> Groundwater was not encountered in our percolation test holes to a maximum depth of about 5 <br /> feet below the ground surface. The California Groundwater Information Center Interactive Map <br /> Application (https://gis.water.ca.gov/app/gicima) indicates groundwater depths at the site ranging <br /> from about 60 to 75 feet between 2011 and 2018. It is possible that groundwater conditions at the <br /> site could change due to variations in rainfall, withdrawal or recharge, construction activities, well <br /> pumping and irrigation, or other factors not apparent at the time the study was performed. <br /> We understand one of the existing water supply wells on the Van Allen Elementary School <br /> property will be used to supply water for the development. No new wells are planned. The water <br /> supply wells are shown on Figure 1. <br /> The results of the groundwater analysis to determine the concentrations of nitrate (N) in the water <br /> sampled from the on-site well indicated a concentration of 5.3 mg/L. This nitrogen concentration <br /> is below the state drinking water standard of 10 mg/L. A copy of the test results and the chain-of- <br /> custody are presented in Appendix B. <br /> We do not know of any existing and/or potential groundwater contamination issues in the project <br /> vicinity. There are no gas stations adjacent to the property. Seasonal fertilization of the on- and <br /> off-site agricultural lands, if performed, operations at the adjacent winery, and other septic <br /> tank/leach field systems in the project area are probably the largest contributors of nitrates to <br /> groundwater in the project vicinity. <br /> 20200144.002A/ST019R101556 Page 6 of 14 September 24, 2019 <br /> ©2019 Kleinfelder www.kleinfelder.com <br />