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SAN JOAQUIN Environmental Health Department <br /> -C O U N T Y-- Jasjit Kang, REHS, Director <br /> �o P <br /> 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 /> Steven Shin, REHS <br /> Michelle Henry, REHS <br /> Elena Manzo, REHS <br /> July 711, 2022 <br /> Robert Smith <br /> PO Box 22748 <br /> Sacramento, CA. 95822 <br /> RE: Soil Suitability & Nitrate Loading Study <br /> 650 S. Reid Ave., Linden <br /> APN: 183-360-560, SR0085485 <br /> The San Joaquin County Environmental Health Department (EHD) has reviewed the Soil <br /> Suitability/Nitrate Loading (SSNL) Study, dated June 301h, 2022 and has the following comments for your <br /> consideration. <br /> The SSNL was prepared to determine the suitability of onsite wastewater treatment system (OWTS) <br /> usage and the potential long-term impact of nitrate to groundwater from the proposed building of a three- <br /> bedroom modular home; on a 2.00-acre property that contains an existing single-family residence, with <br /> a septic system, and water well. <br /> Based on the information provided, the EHD can make the following findings: <br /> 1. Based on the information provided in SSNL study, the EHD finds that the long-term addition of <br /> nitrates added to the site, due to the proposed three-bedroom modular home, will be acceptable <br /> if the amount is mitigated to bring it within the acceptable level of 10 mg/L. Calculations in the <br /> SSNL study indicate an estimated level of 11.93 mg/L of nitrates. In order to mitigate this excess <br /> amount of nitrates, a 2,000 gallon or larger septic tank is to be used. <br /> 2. Percolation test conducted on June 2111, 2022 yielded a percolation rate of 9.25 minutes/inch. <br /> At this rate, an eight-foot soil separation shall be required between bottom of dispersal field and <br /> groundwater pursuant to San Joaquin County Onsite Wastewater Treatment Standard table <br /> 1.10.2. Per SSNL Study, groundwater on site is reported between 150 and 160 feet below surface <br /> grade. <br /> 3. 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 Michael Suszycki, Senior Registered Environmental Health <br /> Specialist, at msuszycki@sjg v.org or (209) 598-7001. <br /> Steven i , REHS <br /> Program Coordinator 9 <br /> c: Javier Pina 650 S. Reid Ave., Linden, CA. 95236 <br /> 1868 E. Hazelton Avenue I Stockton, California 95205 1 T 209 468-3420 F 209 464-0138 1 www.sjgov.org/ehd <br />