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�cq�rP: <br />SANsJOAQUIN <br />COUNTY <br />Greatness grows here. <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 />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 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 />n %r�-;-t I <br />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 />