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i <br /> 4640 E.Woodward Avenue <br /> Addendum to Revised Soil Suitability and Nitrate Loading Study <br /> Prepared by Kleinfelder,Inc. July,13,2006 <br /> �i <br /> Per the calculations provided in the Kleinfelder, Inc. Study, it appears that the proposed use <br /> �y in 2011 is much less than the proposed use in 2006 {which included construction of a 290 <br /> seat capacity-building�. The Kleinfelder, Inc. Study estimated that an average waste/sewage <br /> �-. <br /> now of o�10,200 gams per week would be required to exceed the state drinking water <br /> .. <br /> standard for Nitroge�'i of 10 mg/L in groundwater. Further, the Kleinfelder, Inc. Study <br /> estimated that if a square mile were developed around the site, an average waste/sewage flow � <br /> of over 8,850 gallons per week would be required to exceed the state drinking water standard <br /> for Nitrogen of 10 mg/L in groundwater. <br /> �i <br /> 5.0 CONCLUSIONS AND RECOMMENDATIONS <br /> Based on the information provided by the property owner and SJC EHD, GTI makes the <br /> following conclusions: <br /> 1. The percolation rate in two boreholes advanced in the vicinity of the existing septic <br /> system leach field was estimated to be 3 minutes per inch. <br /> 2. It is GTI's opinion that the vicinity of the existing septic leach field is suitable for <br /> septic system use, having easily met SJC EHD criteria of less than 60 minutes per <br /> 1.J inch. <br /> 3: The proposed use of religious assembly is estimated to generate 3,600 gallons of <br /> waste/sewage per week. <br /> 4. The estimated waste generation of the proposed uses of religious assembly with a <br /> seating capacity of 50 people 2 days per week, up to 10 people 5 days per week, and <br /> residential use is much less than the generation estimated in 2006, where a 290 seat <br /> capacity structure was proposed. <br /> 5. The expected nitrate loading would be correspondingly reduced, based on the <br /> Kleinfelder, Inc. report prepared in 2006, which was found to be acceptable. <br /> � 5.0 REFERENCES <br /> Kleinfelder, Inc., Revised Soil Suitability and Nitrate Loading Study, Proposed Sikh Temple, <br /> P 4628 E. Woodward Avenue, Manteca, CA 95337, July 13, 2006. <br /> San Joaquin County, Onsite Wastewater Disposal Standards,October 2003. <br /> �j <br /> Fiki Geological Technics Inc. 4 <br /> 16232 Nitrate Loading Addendum.docx <br />