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( SAN JOAQUIN <br />COUNTY <br />\ c,iir-i-ix-1,. / Greatness grows here. <br />February 24, 2020 <br />Manteca Unified School District <br />P. 0. Box 32 <br />Manteca, CA 95336 <br />Environmental Health Department <br />Kasey Foley, REHS, Interim Director <br />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 C <br />SCANNED <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 />Construction of a new multi-purpose building of 14,600 square feet, and a kindergarten <br />classroom building of 4,500 square feet. <br />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 I T 209 468-3420 I F 209 464-0138 I www.sjgov.org/ehd