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("c° SAN JOAQUIN <br />.4 t__ ----COUNTY <br />Greutriess grov✓� <br />December 14, 2021 <br />Tristan Hartung <br />P.O Box 2180, <br />Lodi, CA. 95240 <br />RE: Soil Suitability/Nitrate Loading Study <br />11250 N. Micke Grove Rd <br />APN 059-140-57, SR0084526 <br />Environmental Health Department <br />Jasjit Kang, REHS, Director <br />Muniappa Naidu, REHS, Assistant Director <br />PROGRAM COORDINATORS <br />Robert McClellon, REHS <br />Jeff Carruesco, REHS, RDI <br />Willy Ng, REHS <br />Michael Kith, REHS <br />Melissa Nissim, REHS <br />Steven Shih. REHS <br />The San Joaquin County Environmental Health Department (EHD) has reviewed the Soil Suitability/Nitrate <br />Loading (SSNL) Study, dated September 2021 and submitted on November 23, 2021 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 treatment <br />system (OWTS) usage and the potential long-term impact of nitrate to groundwater for the following proposed <br />project. <br />• Six (6) duplex Farm Labor Residential Dwelling units on two (2) five -acre lots, totaling of twelve <br />(12) duplex units. <br />Based on the information provided, the EHD can make the following findings: <br />1. The SSNL Study supports the (OWTS) usage with the following conditions: <br />a. According to the SSNL, the estimated nitrate loading from existing and proposed OWTS usage is <br />13.18 mg/L as nitrate -nitrogen and the maximum contaminant level allowed is 10 mg/L-N. The <br />SSNL also states that groundwater is approximately 80 feet below the ground surface at the site. <br />With all of these factors taken into consideration, EHD will require an alternative engineered <br />designed Onsite Wastewater Treatment System. <br />b. The OWTS and its 100% replacement areas shall meet all required minimum setbacks stated in <br />San Joaquin County (OWTS) Standard and Well Standard. <br />If you have any questions please contact Frank Girardi, Senior Registered Environmental Health Specialist, <br />at fvgirardi@sjgov.org or (209) 616-3044. <br />Steven �ShihREHS <br />Program Coordinator <br />c: SAPPHIRE CREEK LLC; 5252 BEAR CREEK RD., LODI CA 95240 <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 />