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QUIIV <br /> °P— c°,� SA6JOAQUIN <br /> Environmental Health Department <br /> f_�'� '`) COUNTY Jasjit Kang, REHS, Director <br /> c-�4IL/FoP Greotness grows here. Muniappa Naidu, REHS,Assistant Director <br /> PROGRAM COORDINATORS <br /> Jeff Carruesco, REHS, RDI <br /> Willy Ng, REHS <br /> Steven Shih, REHS <br /> Elena Manzo,REHS <br /> Natalia Subbotnikova, REHS <br /> June 22, 2026 <br /> Kim Ferriere <br /> 1839 Oxford Way <br /> Stockton, CA 95204 <br /> RE: Soil Suitability/Nitrate Loading Study <br /> 18895 & 18899 E. Sierra View Court, Clements <br /> APN: 01926058, SU-2601398 <br /> The San Joaquin County Environmental Health Department (EHD) has reviewed the Soil Suitability/Nitrate <br /> Loading Study (SSNL) dated June 18, 2026 for the above noted location and has the following comments for <br /> 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 nitrate loading impact to groundwater from the proposed <br /> three-bedroom home and two-bedroom ADU. <br /> Based on the information provided the EHD can make the following findings: <br /> a. 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 Development <br /> Title, Section 9-604.010(d) <br /> b. Percolation test conducted on June 2, 2026 yields a percolation rate of 12.5 min/inch. At this rate an <br /> 8' soil separation is required between bottom of dispersal field and the groundwater. Groundwater is <br /> reported at 140-170 feet below surface grade. (San Joaquin County OWTS Standard Table 1.10.2). <br /> c. Obtain an installation permit for residential onsite waste water treatment system (OWTS) from this <br /> department. Inspection is required before back fill of OWTS excavations. Request for inspection 24 <br /> hours in advance by calling our inspection line (209) 953-7697. (SJC OWTS Standard 2) <br /> d. Construction of an individual domestic water well under permit and inspection by the Environmental <br /> Health Department is required at the time of development (San Joaquin County Development Title, <br /> Section 9-601.010 (b)). <br /> If you have any questions please contact Aaron Gooderham, Senior Registered Environmental Health <br /> Specialist, Sr. REHS, at agooderham@sjgov.org or (209) 616-3062. <br /> AA6rt1 <br /> Steven Shih, REHS <br /> Program Coordinator <br /> CC: Live Oak Geo Environmental <br /> 407 W. Oak Street <br /> 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 />