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KL E/NFEL OER <br /> .S,•ohr Mvo:c Farr Sa•'::on <br /> 8 GROUNDWATER <br /> Groundwater was not encountered within our explorations drilled to a depth of about 25 feet below <br /> existing site grade. Lines of Equal Depth to Groundwater contour maps (2015) published by the <br /> San Joaquin County Flood Control and Water Conservation District show groundwater levels in <br /> the project area in the range of about 60 feet below ground surface. Lines of Equal Elevation of <br /> Groundwater contour maps(2015) published by the San Joaquin County Flood Control and Water <br /> Conservation District show the groundwater gradient in the project area is generally to the east to <br /> the northeast. Local gradient variations may occur due to well usage. <br /> The existing concentrations of nitrate as NO3 in the groundwater at the site are unknown because <br /> a water supply well is not located within the parcel. Groundwater is not currently used at the site, <br /> nor is it anticipated to be used in the near future for the proposed facility within the parcel. <br /> We do not know of any existing and/or potential groundwater contamination issues in the project <br /> vicinity. There are no existing dairies adjacent to the property. Other septic tank/leach field <br /> systems in the project area are probably the largest contributors of nitrogen to groundwater in the <br /> project vicinity. <br /> 20173772.001A/ST017R57809 Page 8 of 15 April17, 2017 <br /> ©2017 Kleinfelder www.kleinfelder.com <br />