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SAN JOAQUIN <br />_ — -- COUNTY ----- <br />,''% Greatness grows here. <br />April 1St, 2022 <br />Abby Racco <br />Live Oak Geo Environmental <br />407 W. Oak St. <br />Lodi, CA. 95240 <br />RE: Soil Suitability/Nitrate Loading Study <br />11880 E. Ada Ave., Stockton <br />APN: 103-280-33, SR0084952 <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 />Melissa Nissim, REHS <br />Steven Shih, REHS <br />Michelle Henry, REHS <br />The San Joaquin County Environmental Health Department (EHD) has reviewed the Soil Suitability/Nitrate <br />Loading (SSNL) Study, dated March 3rd, 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 building of a single-family <br />residences on a 2.27 -acre (Parcel One) property and another single-family residence on a 2.58 -acre (Parcel <br />2) property. <br />Based on the information provided, the EHD can make the following findings: <br />1. 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 February 15th, 2022 yielded a percolation rate of 9.7 and 9.0 <br />minutes/inch on Parcels One and Two respectively. At this rate, an eight -foot soil separation shall be <br />required between bottom of dispersal field and groundwater pursuant to San Joaquin County Onsite <br />Wastewater Treatment Standard table 1.10.2. Per SSNL Study, groundwater on site is reported <br />between 115 and 145 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 Michael Suszycki, Senior Registered Environmental Health <br />Specialist, at msuszycki@sjgov.org or (209) 598-7001. <br />Steven Shih, REHS 5�1�1 <br />Program Coordinator <br />c: Calvin Tate, 2932 Canal Dr., Stockton, CA. 95204 <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 />