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Q130c°`� SAN.PJOAQUIN Environmental Health Department <br /> COUNTY Jasjit Kang, REHS, Director <br /> c' 0Foa��P Greatness grows here. Muniappa Naidu, REHS,Assistant Director <br /> PROGRAM COORDINATORS <br /> Robert McClellon, REHS <br /> Jeff Carruesco, REHS, RDI <br /> Willy Ng, REHS <br /> Michael Kith, REHS <br /> November 16, 2020 ORIGINAL Melissa Nissim, REHS <br /> Sombun Laxsanaamporn <br /> 11253 N. Thornton Rd <br /> Stockton, CA 95209 <br /> RE: Soil Suitability/Nitrate Loading Study Addendum <br /> 11253 Thornton Road, Stockton <br /> APN 055-200-03, PA-1600266, SR0080888 & SR0082803 <br /> The San Joaquin County Environmental Health Department (EHD) has reviewed the Soil Suitability/Nitrate <br /> Loading (SSNL) Study dated July 11, 2019, submitted on July 15, 2019 and its addendum dated October 19, <br /> 2020 and submitted on October 29, 2020 for the above noted location, and has the following comments for <br /> 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 impact of nitrate to groundwater for a development project <br /> at above noted location. <br /> 1. The development project includes an existing 5-bedroom dwelling, a detached man and woman <br /> restroom, and a proposed 4,183 square foot (SF) dormitory, two 400 SF storage containers, and tree <br /> temporary tents totaling 4,183 SF on a 4.60 acres parcel. <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 future development on the proposed parcels, pursuant to San Joaquin <br /> County Ordinance Code Title 9, Section 9-1105.2(d). <br /> 2. The water sample data show the well being utilized for drinking water has an elevated level of nitrate <br /> nitrogen of 27.0 mg/L-N and may not be a suitable source for the potable water supply for new <br /> development. A potable water supply that can provide a consistent source of safe and clean water <br /> adequate for human consumption, cooking, and sanitary purposes for the proposed project prior to <br /> the issuance of building permits (2016 CA Plumbing Code, Section 601.2). <br /> If you have any questions please contact Naseem Ahmed, Senior Registered Environmental Health <br /> Specialist, at nahmed@sjgov.org or (209) 616-3018. <br /> O" _ <br /> Muniappa Naidu, REHS <br /> Assistant Director <br /> c: Terracon Consultants, Inc. <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 />