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AdvancedGeo <br /> An Employee-Owned Company <br /> 24 March 2020 <br /> Project No. 19-4964 <br /> Mr. Michael Kith <br /> San Joaquin County Environmental Health Department <br /> 1868 E Hazelton Ave, Stockton, CA 95205 <br /> Email: mkith(Zi_)sicehd.com <br /> Subject: Addendum to Soil Suitability and Nitrate Loading Study <br /> AGUIRRE PROPERTY <br /> 438 West Mathews Road, French Camp, California <br /> Dear Mr. Kith: <br /> At the request of Nicolas Aguirre of the Aguirre Property, AdvancedGeo, Inc. (AGI) has <br /> prepared this Addendum to Soil Suitability and Nitrate Loading Study for the property <br /> located at 438 West Mathews Road, French Camp, California (site). This Addendum was <br /> prepared to provide the revised mass balance of nitrogen loading. <br /> The current site usage includes a 1,678-square foot house with two bedrooms. <br /> Residential use includes showering/bathing, clothes washing, cooking, and hand <br /> washing. The reasonable or maximum usage of wastewater for the two-bedroom house <br /> is 100 gallons for the first bedroom and 50 gpd for each additional bedroom for a total of <br /> 150 gpd. <br /> The future site usage includes the addition of a residence with three bedrooms for <br /> residential use. The reasonable or maximum usage of wastewater for the three-bedroom <br /> modular home is 100 gallons for the first bedroom and 50 gpd for each additional bedroom <br /> for a total of 200 gpd. <br /> The EHD requires the user to consider all potential sources identified for wastewater <br /> generation. Further, the EHD supports the use of Hantzsche/Finnemore, or other <br /> appropriate formula/model to calculate a mass of nitrogen loading. <br /> RESIDENTIAL: <br /> The Hantzsche / Finnemore (Nr) equation for residential home application: <br /> Nr = IxNw (1-d) + RxNb + (I+R) <br /> Definitions: <br /> 837 Shaw Road • Stockton, CA 95215 <br /> Telephone (800) 511-9300 - Fax (888) 445-8786 <br />