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Soil Suitability Nitrate Loading Study <br /> Manteca Unified School District <br /> 2414"Street,French Camp,CA <br /> Page 10 <br /> upgradient of the subject property have been documented in the GAMA database. Due to these factors and <br /> assumptions described,the result of nitrate exceedance is possible. <br /> 2.4.2 Methods Proposed to Mitigate and Known or Future Impact to Soil and Groundwater from <br /> Nitrate,and/or any Other Constituent of Concern,at and/or Around the Project Site <br /> The Site is located within historical and current agricultural farmlands and rural housing. Activities related <br /> to these practices and the use of existing septic systems may be considered potential influences on soil <br /> suitability and nitrate loading results. <br /> Typical mitigation measures to minimize potential building up nitrate in the shallow aquifer may include <br /> advanced treatment options to reduce effluent nitrate-N concentrations to below 10 mg/L and/or a designed <br /> groundwater offset that maintains a separation of at least five feet between the bottom of the leach trench(es) <br /> and the static groundwater level. <br /> 3.0 CONCLUSIONS AND RECOMMENDATIONS SECTION <br /> The result of this nitrate loading report indicates that the calculated discharge from the proposed <br /> development would not result in nitrate-N concentrations exceeding the 10 mg/L, which suggests that <br /> designed mitigation is unwarranted. <br /> 3.1 REPORT CERTIFICATION <br /> Our professional services were performed, our findings obtained, and our conclusions proposed in <br /> accordance with generally accepted engineering principles and practices.This warranty is in lieu of all other <br /> warranties either expressed or implied. Test findings and statements of professional opinion do not <br /> constitute a guarantee or warranty, expressed or implied. <br /> The professional findings contained in this nitrate loading study are strictly based on the information <br /> provided regarding the proposed project, other consultant's reports and conclusions, surficial geologic <br /> conditions encountered across the site by others. Furthermore, the analysis, conclusions and <br /> recommendations contained in this report are based on the site conditions as they existed at the time, we <br /> performed our study. <br /> Respectfully submitted, <br /> P <br /> CONDOR EARTH ���'�O'�N �•ON <br /> a —{ <br /> ENVIRONMENTAL PROFESSIONAL: No.GM ASSISTED BY: <br /> OF C4 <br /> John P. Lane,CA PG No. 6795 January 24,2020 Kaleb Ledford <br /> Environmental Services Manager Staff Geologist <br /> X:\Project\7000_prj\7986 MUSD French Camp Elementary School\7986B -Soil Suit-Nitrate Loading\Reports\FR 20200124 French Camp Soil <br /> Suitability Nitrate Loading Report.docx <br /> il? CONDOR <br />