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S A N J O A Q U I N Environmental Health Department <br /> `,a , ;i Jasjit Kang, REHS, Director <br /> COUNTY <br /> Muniappa Naidu,REHS,Assistant Director <br /> orr.tt"_ here. <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 /> December 17, 2021 <br /> KEVIN HUBER �' <br /> HIGHWAY 12 INVESTORS LLC ETAL & LILVAL PROPERTIES, LTD <br /> 1203 N GRANT ST, <br /> STOCKTON, CA. 95202 <br /> RE: Soil Suitability/Nitrate Loading Study <br /> 15314 N. Thornton Rd., Lodi <br /> APN 025-190-31, SR0084623 <br /> The San Joaquin County Environmental Health Department (EHD) has reviewed the Soil Suitability/Nitrate <br /> Loading (SSNL) Study, dated December 15, 2021 and submitted on December 16, 2021 for the above noted <br /> location, and has the following comments for 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 impact of nitrate to groundwater for the following proposed <br /> project. <br /> • 4,900 square foot truck Parking facility on a 4.96-acre lot. <br /> Based on the information provided, the EHD can make the following findings: <br /> a. The SSNL Study supports the suitability for standard OWTS usage for the proposed project on the <br /> above mentioned parcel, pursuant to San Joaquin County Ordinance Code Title 9, Section 9- <br /> 1105.2(d), provided proposed OWTS and 100% replacement area can meet all required minimum <br /> setbacks. <br /> b. Percolation test conducted on November 22, 2021 yielded a percolation rate of 17.05 minutes/inch <br /> for both deep tests (failed both shallow tests). At this rate, a minimum 8-foot soil separation shall <br /> be required between bottom of dispersal field and groundwater pursuant to San Joaquin County <br /> Onsite Wastewater Treatment Standard table 1.10.2. Per SSNL Study, groundwater on site is <br /> reported between 20 feet below surface grade. <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 /> V� <br /> �df Steven Shih, REHS <br /> Program Coordinator <br /> c: HIGHWAY 12 INVESTORS LLC ETAL& LILVAL PROPERTIES, LTD <br /> 1203 N GRANT ST <br /> STOCKTON, CA 95202 <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 />