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4640 E.Woodward Avenue <br /> Addendum-Revised Soil Suitability and Nitrate Loading Study <br /> ' Prepared by Kleinfelder, Inc. July 13,2006 <br /> ' This addendum was undertaken to satisfy SIC EHD Conditions of Approval 3.a and it is <br /> anticipated that this presentation of findings may allow SIC EHD to approve their portion of <br /> the use permit application. <br /> ' 2.0 INTRODUCTION <br /> Use Permit Application No. PA-0800206 was submitted to San Joaquin County Community <br /> Development Department (SJC CDD), to allow the use of 4640 E. Woodward Avenue in <br /> Manteca to be changed from residential to religious assembly. SIC CDD reviewed the <br /> application and on December 28, 2009 issued Conditions of Approval for PA-0800206. <br /> t A Revised Soil Suitability and Nitrate Loading Study was prepared by Kleinfelder, Inc. dated <br /> July 13, 2006. GZA understands that this study was prepared in anticipation of construction <br /> of a Proposed Sikh Temple, but the proposed improvements were not constructed. The <br /> ' nitrate loading study includes percolation testing in the vicinity of the proposed septic leach <br /> field. Improvements at 4640 E. Woodward Avenue since that time have included <br /> construction of a game room in conjunction with the existing residence, a parking lot, and <br /> ' septic system consisting of fwo each 2,000 gallon septic tanks and a septic leach field. <br /> The current proposed improvement is to construct a commercial kitchen with the capacity to <br /> ' feed 300 meals per day. Refer to the attached site map drawing A-0 for kitchen location. <br /> In order to allow the proposed use change, San Joaquin County Environmental Health <br /> ' Department (SIC EHD) is requiring that the Nitrate Loading Study be updated to reflect the <br /> proposed amended use. Given that three percolation studies have been completed on this <br /> property, we will use the data from those results for use in this addendum report. <br /> ' Refer to the site maps attached in Appendix A showing locations of the three percolation <br /> studies. <br /> 1 <br /> 3.0 PREVIOUS PERCOLATION TESTING RESULTS <br /> 1 The results from the three reports show the following percolation rates: <br /> GTI (6/8/2011) 3 min/inch silty sand <br /> ' Krazan (9/21/2010) 5 min/inch silty sand/sand <br /> Krazan (9/21/2010) 30 min/inch silty sand (two percolation sites) <br /> Kleinfelder (7/13/2006) 1.7 min/inch silty sand <br /> ' The average percolation rate for these five tests is 13 minutes per inch. These results clearly <br /> fall within the County guideline of 60 minutes per inch percolation rate. This is consistent <br /> ' with the soil type description in the Soil Survey of San Joaquin County, California, October <br /> 1992, USDA in cooperation with the University of California and California Department of <br /> Conservation. <br /> ' Ground Zero Analysis, Inc. 2 <br /> t16232 Nitrate Loading Add 170317.docx <br />