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SAKd0AQUIN a <br /> � Environmental Health Department <br /> COUNTY- Jasjit Kang, REHS, Director <br /> cq`i P G re o t n e s s grows here. 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 /> January 19, 2021 <br /> 3B's Truck & Auto Plaza ORIGINAL <br /> Tony Khatirine <br /> P.O. Box 2695 <br /> Lodi, CA 95241 <br /> RE: Soil Suitability/Nitrate Loading Study Addendum <br /> 14749 N. Thornton Rd, Lodi <br /> APN 055-150-26, SR0083045 <br /> The San Joaquin County Environmental Health Department (EHD) has reviewed the Soil Suitability/Nitrate <br /> Loading (SSNL) Study, dated December 15, 2020 and submitted on December 18, 2020 and its addendum <br /> dated January 18, 2021 for the above noted 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 from the proposed tenant <br /> improvement to existing gas station. <br /> Based on the information provided, the EHD can make the following findings: <br /> a) According to the SSNL, the estimated nitrate loading from existing and proposed OWTS usage is <br /> 21.92 mg/L as nitrate-nitrogen and the maximum contaminant level of 10 mg/L-N. EHD will require the <br /> mitigation of nitrate-nitrogen through an engineered Onsite Wastewater Treatment System. <br /> b) Percolation test conducted on November 24, 2020 yield percolation rate of 11.36 minutes per inch. At <br /> this rate, an 8' of soil separation is required between bottom of dispersal field and ground water. Per <br /> study, the groundwater at site is 10' below ground surface. <br /> c) A Registered Civil Engineer shall submit complete engineering design plan to EHD for approval prior <br /> to issuance of building permit. Fee will be based on the current fee schedule at time of payment. <br /> If you have any questions please contact Naseem Ahmed, Senior Registered Environmental Health <br /> Specialist, at nahmed@sjgov.org or (209) 616-3018. <br /> Muniappa Naidu, REHS <br /> Assistant Director <br /> c: Mike Smith Engineering &AdvancedGeo Environmental <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 />