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1 GROUND ZERO ' ANALYSIS, INC. 1 ' Report Soil Suitability and Nitrate Loading Study ' Commercial Kitchen 4640 E. Woodward Avenue Manteca, CA Project No. 1623.2 March 17, 2017 ' 1.0 SUMMARY Ground Zero Analysis, Inc. (GZA) has prepared this Addendum to the Revised Soil Suitability and Nitrate Loading Study that was prepared by Meinfelder, Inc. in 2006, to ' address San Joaquin County Environmental Health Department (SJC EHD) conditions of approval for a proposed use change at 4640 E. Woodward Avenue in Manteca. In fact, three separate studies have been conducted on this property for soil percolation characteristics and ' nitrate loading from the use of this property for residential, religious fellowship assembly, restroom and kitchen. These three reports are referenced in Section 6 and select data pages are also included in Appendix A of this report. ' On February 27, 2017, Ray Kablanow of GZA met onsite with Carlos Vieira and reviewed the proposal for the commercial kitchen. It is marked on the attached drawing in Figure A-O. ' This drawing also shows the proposed septic system for the commercial kitchen being coupled with the existing septic system. Based on proposed use of religious assembly commercial kitchen with meal preparation of 250 to 300 meals per day on given-,days—f ltlie-wdek the waste/sewage generated per week for the facility was estimated to'�e 1000 gallons per week. .Combined with the Addendum ' prepared by Geolo ec nics Inc. (GTI) in 2011, the combined waste water generation on a weekly baso is 4,600 gallons. The-previ6us estimate generated by Kleinfelder, Inc. in 2006 was based kn proposed construction of a 290 seat temple, which was not constructed. It ' appears that the proposed combined uses are less than the previous estimate, which was determined by Meinfelder, Inc. to be less than what would cause an exceedance of the state drinking water standard for nitrogen in groundwater. 1 1