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QUIAj <br /> � �� S A N J 0 A 0 U I N Environmental Health Department <br /> Q . <br /> COUNTY Jasjit Kang, REHS, Director <br /> P P Muniappa Naidu,REHS,Assistant Director <br /> `:�CfFOGt�./ Greatness grows bete. PROGRAM COORDINATORS <br /> Robert McClellon,REHS <br /> Jeff Carruesco,REHS, RDI <br /> Willy Ng.REHS <br /> Steven Shih.REHS <br /> Michelle Henry,REHS <br /> Elena Manzo,REHS <br /> August 29, 2022 <br /> Don Chesney <br /> Chesney Consulting <br /> PO BOX 3794 <br /> Turlock CA 95381 <br /> RE: Soil Suitability Study <br /> 9015 W Walnut Grove Rd., Thornton, CA. 95686 <br /> APN 001-140-40, SR0085701 <br /> The San Joaquin County Environmental Health Department (EHD) has reviewed the Soil Suitability (SS) <br /> Study, dated August 26, 2022 for the above noted location, and has the following comments for your <br /> consideration. <br /> The SS study was prepared to determine the suitability of the above noted parcel for onsite wastewater <br /> treatment system (OWTS) for a proposed repair/upgrade to the system. <br /> Based on the information provided, the EHD can make the following findings: <br /> a. The Percolation tests conducted on March 17, 2022 yielded percolation rates of 35.7 min/inch, 8.3 <br /> min/inch, and 83.3 min/inch. At this rate, a minimum 5 feet of soil separation is required between <br /> bottom of the dispersal field and the groundwater. The SS study reports a historic groundwater <br /> level of 10 feet below surface grade. (San Joaquin County OWTS Standard Table 1.10.2). <br /> b. The OWTS and its 100% replacement areas shall meet all required minimum setbacks stated in <br /> San Joaquin County (OWTS) Standard and Well Standard. <br /> If you have any questions please contact Francisco Garcia Ruiz, Environmental Health Specialist, at <br /> fgarciaruiz@sjgov.org or (209) 616-3032. <br /> Steven Shih, REHS <br /> Program Coordinator <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 />