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>�"W- - <br />SAN JOAQUIN <br />JCOUNTY-- <br />q�-F-_ Greatness grows here. <br />October 14, 2021 <br />Keith Decker & Dondra Nickell <br />3358 E Acampo Rd <br />Acampo CA, 95220 <br />Environmental Health Department <br />RE: Soil Suitability/Nitrate Loading Study Addendum <br />4569 E Harvest Rd, Acampo CA 95220 <br />APN: 017-020-06, SR0084225 <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 />The San Joaquin County Environmental Health Department (EHD) has reviewed the Soil Suitability/Nitrate <br />Loading (SSNL) Study, dated September 16, 2021 and its addendum dated October 14, 2021 for the above <br />noted location, and has the following comments for your consideration. <br />The SSNL Study was prepared to determine the suitability of the above noted parcel for onsite wastewater <br />treatment system (OWTS) usage and the potential long-term impact of nitrate to groundwater from the <br />proposed modular studio house. <br />Based on the information provided, the EHD can make the following findings: <br />According to the SSNL, the estimated nitrate loading from the proposed OWTS usage is 12.9 mg/L as <br />nitrate -nitrogen and the maximum contaminant level of 10 mg/L-N. EHD will require an oversized <br />1,600 -gallon septic tank for installation of a standard Onsite Wastewater Treatment System. <br />2. Percolation test conducted on September 3, 2021 yielded a percolation rate of 2.87 minutes/inch. At <br />this rate, a 20 -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 the San <br />Joaquin County Water Resource Lines of Equal Depth to Ground Water Map of Fall 2017 and Spring <br />2018, groundwater on site is reported between 69 and 70 feet below surface grade. <br />3. The existing domestic water well shall be tested for nitrates and DBCP. Samples are to be taken by <br />a third party and analyzed by a State -approved laboratory prior to issuance of building permit (San <br />Joaquin County Development Title, Section 9-1115.7). <br />4. 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 Francisco Garcia Ruiz, Environmental Health Specialist Trainee, at <br />fgarciaruiz@sjgov.org or (209) 616-3032. <br />r <br />ev ih, S <br />Program Coordinator <br />c: Live Oak GeoEnviron mental <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 />