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�i <br /> } Geological Technics 11tc. <br /> 1172 Kansas Avenue <br /> Modesto,California 95351 <br /> (209)522-4119/Fax(209)522-4227 <br /> Addendum <br /> y Revised Soil Suitability and Nitrate Loading Study <br /> 4640 E. Woodward Avenue <br /> Manteca, CA <br /> Project No. 1623.2 <br /> June 8, 2011 <br /> 1.0 SUMMARY <br /> Geological Technics Inc. (GTI) has prepared this Addendum to the Revised Soil Suitability <br /> and Nitrate Loading Study that was prepared by Kleinfelder, Inc. in 2006, to address San <br /> Joaquin County Environmental Health Department (SJC EHD) conditions of approval for a <br /> proposed use change at 4640 E. Woodward Avenue in Manteca. On June 8, 2011 GTI staff <br /> mobilized on site and conducted a percolation test per SJC EHD standard procedures and <br /> oversight. The results of the percolation test indicate that the vicinity of the existing septic <br /> leach field is suitable for septic system usage. <br /> Based on proposed use of religious assembly with a seating capacity of 50, the waste/sewage <br /> generated per week for the facility was estimated to be 3,600 gallons per week. The previous <br /> estimate generated by Kleinfelder, Inc. in 2006 was based on proposed construction of a 290 <br /> seat temple, which was not constructed. It appears that the proposed use is less than the <br /> previous estimate, which was determined by Kleinfelder, Inc. to be less than what would <br /> cause an exceedance of the state drinking water standard for nitrogen in groundwater. <br /> This addendum was undertaken to satisfy SJC EHD Conditions of Approval 3.a and it is <br /> anticipated that this presentation of findings may allow SJC EHD to approve their portion of <br /> the use permit application. <br /> �F <br /> •1.1.1.1.1 ! <br /> f <br />