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SAN IOAQUIN a <br /> Environmental Health Department <br /> COUNTY Kasey Foley, REHS, Interim Director <br /> Greatness grows here. PROGRAM COORDINATORS <br /> Robert McClellon,REHS <br /> Jeff Carruesco, REHS, RDI <br /> Willy Ng, REHS <br /> Muniappa Naidu, REHS <br /> Michael Kith,REHS <br /> Melissa Nissim, REHS <br /> February 24, 2020 <br /> Manteca Unified School District <br /> P. O. Box 32 <br /> Manteca, CA 95336 <br /> RE: Soil Suitability/Nitrate Loading Study <br /> Nile Garden Elementary School <br /> 5700 E. Nile Avenue, Manteca <br /> APN 226-070-03, SR0081715 <br /> The San Joaquin County Environmental Health Department (EHD) has reviewed the Soil <br /> Suitability/Nitrate Loading Study (SSNL) submittal, submitted December 5, 2020 for the above noted <br /> location and has the following comments for your consideration. <br /> The SSNL was prepared to determine the suitability of the above noted parcel for onsite wastewater <br /> treatment system (OWTS) usage and the potential impact of nitrate to groundwater for the proposed <br /> project development. The project development includes: <br /> 1. Construction of a new multi-purpose building of 14,600 square feet, and a kindergarten <br /> classroom building of 4,500 square feet. <br /> 2. The OWTS usage with waste water of 6,378 gallons from the multi-purpose building and a <br /> kindergarten classroom building. <br /> Based on the information provided, the SSNL does not provide sufficient for EHD to determine the <br /> suitability for the above noted parcel for standard OWTS usage, pursuant to San Joaquin County <br /> Ordinance Code Title 9, Section 9-1105.2(d). The following information is needed: <br /> 1. The nitrate loading study assumed the proposed expansion to generate 6,378 gallons per day <br /> effluent into the proposed septic system over the 15.36 acre site. However, the 15.36 acre <br /> site also receives wastewater dispersal and nitrate contribution from existing classroom <br /> buildings. The nitrate loading study is a cumulative study and the volume of wastewater and <br /> nitrate contribution from all sources must be considered. <br /> Should the total wastewater volume generated for the parcel exceed 10,000 gallons, approval <br /> from the Central Valley Regional Water Quality Control Board must be obtained. Please <br /> provide a nitrate loading evaluation using the cumulative wastewater volume and nitrate <br /> contribution from all sources for the parcel. <br /> 1868 E. Hazelton Avenue I Stockton, California 95205 1 T 209 468-3420 1 F 209 464-0138 1 www.sjgov.org/ehd <br />