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.. <br /> SAN J 0 A Q U I N Environmental Health Department <br /> kms"`,1 --COU N T Y Jasjit Kang, REHS, Director <br /> Greatness grows here. Muniappa Naidu,REHS,Assistant Director <br /> PROGRAM COORDINATORS <br /> Robert McClellan, REHS <br /> Jeff Carruesco, REHS, RDI <br /> Willy Ng, REHS <br /> Steven Shih, REHS <br /> Michelle Henry, REHS <br /> September 19, 2022 Elena Manzo, REHS <br /> Joe Murphy <br /> Dillion & Murphy <br /> 847 N. Cluff Avenue, Suite A2 <br /> Lodi, CA 95240 <br /> RE: Soil Suitability/Nitrate Loading Study <br /> 7007, 7111, 7313, 7327, 7339 7451 & 7475 W. March Lane, Stockton <br /> APN 071-140-01, 02, 07, 08, 09, 10 & 11 (SR0085724) <br /> The San Joaquin County Environmental Health Department (EHD) has reviewed the Soil Suitability/Nitrate <br /> Loading (SSNL) Study, dated August, 2022 and has the following comments for your consideration. <br /> The SSNL was prepared to determine the suitability of onsite wastewater treatment system (OWTS) usage <br /> and the potential long-term impact of nitrate to groundwater from the proposed subdivision PA-2100281 (MS). <br /> Based on the information provided, the EHD cannot accept SSNL study and has the following comments: <br /> 1. Based on the percolation test investigation, soils profile and shallow depth to ground water at 2.5' <br /> below ground surface, an engineer design will be required for all new septic system(s) and repairs to <br /> mitigate distance between groundwater and OWTS. <br /> 2. Provide calculated potential nitrate loading to groundwater using Hanztch/Finnemore calculation <br /> method. For convenience see attached nitrate loading study requirement checklist. <br /> 3. Provide lab results for 1,2-Dibromo-3-chloropropane (DBCP). Per chain of custody provided the <br /> sample taken from well was analyzed for DBCP but results not included. <br /> Submit an addendum to EHD addressing comment 2 and 3 for and EHD will respond accordingly. <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 /> �� lir' <br /> -F, <br /> Steven Shin, REHS <br /> Program Coordinator <br /> c: Rita Busalachhi- 6110 Granica Ct, Stockton CA 95215 <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 />