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,� SAN JOAQUIN <br />"`' COUNTY <br />Greatness grows here. <br />August 16, 2022 <br />Joe Murphy <br />Dillon and Murphy <br />PO Box 2180 <br />Lodi, CA. 95240 <br />RE: Soil Suitability/Nitrate Loading Study <br />15780 N Clements Rd, Lodi <br />APN: 053-190-01, SR0085547 <br />Environmental Health Department <br />Jasjit Kang, REHS, Director <br />Muniappa Naidu, REHS, Assistant Director <br />PROGRAM COORDINATORS <br />Robert McClellan, REHS <br />Jeff Carruesco, REHS, RDI <br />Willy Ng, REHS <br />Steven Shih, REHS <br />Michelle Henry, REHS <br />Elena Manzo, REHS <br />The San Joaquin County Environmental Health Department (EHD) has reviewed the Soil Suitability/Nitrate <br />Loading (SSNL) Study, dated July 19, 2022 and has the following comments for your consideration. <br />The SSNL was prepared to determine the suitability of onsite wastewater treatment system (OWTS) usage <br />and the potential long-term impact of nitrate to groundwater from the proposed Minor Subdivision to include <br />a 3 bedroom single family residence and a 2 bedroom accessory dwelling unit on each parcel. <br />Based on the information provided, the EHD can make the following findings: <br />Based on the information provided, the EHD finds that the SSNL Study supports the suitability for <br />standard OWTS usage for the proposed development pursuant to San Joaquin County Ordinance <br />Code Title 9, Section 9-1105.2(d). <br />2. Percolation test conducted on July 6, 2022 yielded a percolation rate of 50 minutes/inch. At this rate, <br />a five-foot soil separation shall be required between bottom of dispersal field and groundwater <br />pursuant to San Joaquin County Onsite Wastewater Treatment Standard table 1.10.2. Per SSNL <br />Study, groundwater on site is reported between 150 feet below surface grade. <br />3. The OWTS and its 100% replacement areas shall meet all required minimum setbacks stated in San <br />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 />':Z�tzz Z_' Z__ <br />(Zr- <br />Steven Shih, REHS <br />Program Coordinator <br />c: Sammy and Heather Cox 2015 Trust, PO Box 1592, Linden CA 95236 <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 />