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( '00, , SAN��JOAQUIN Environmental Health Department <br /> COUNTY <br /> Jasjit Kang, REHS, Director <br /> Muniappa Naidu, REHS,Assistant Director <br /> °4)Fi6_��P Greatness grows here. PROGRAM COORDINATORS <br /> Robert McClellon,REHS <br /> Jeff Carruesco, REHS, RDI <br /> Willy Ng, REHS <br /> Melissa Nissim, REHS <br /> Steven Shih, REHS <br /> August 4, 2021 <br /> TIM JOHNSTON <br /> ACORN ONSITE, INC. <br /> 2288 BUENA VISTA AVENUE <br /> LIVERMORE, CA 94550 <br /> RE: Engineered Onsite Wastewater Treatment System <br /> 11668 S. Union Road, Manteca <br /> APN 20403007, SR0083935 <br /> The San Joaquin County Environmental Health Department (EHD) has reviewed the engineered Onsite <br /> Wastewater Treatment System (OWTS) plans (the Plans) for the above noted location and has the <br /> following comments for your consideration. <br /> EHD could not approve the Plans at this time. Please provide the following information to the EHD: <br /> 1) Provide calculations and source of the data and calculations that show this system will have the <br /> ability to reduce nitrate-nitrogen concentration in the septic tank by 50%. (SJC OWTS 7.1.3—7.1.4). <br /> 2) Provide specification sheets (cut sheets) of all non-standard septic system equipment such as the <br /> proposed Aerobic Treatment Unit, the Dosing Pump Tank, Pressure Dose system (are any of the <br /> lines pressurized?) referenced on Sheet 1 of the Plan. (SJC OWTS Standards 7.1). <br /> 3) The leach lines shall be minimally 12 feet apart center-to-center to meet SJC OWTS Standard for <br /> leach lines (SJC OWTS Standard 9.4). <br /> 4) Provide an Operations and Maintenance Plan (SJC OWTS Standards 1.12.1) that will regularly <br /> monitor the effectiveness of the OWTS based on the OWTS design performance parameter (SJC <br /> OWTS Standards 2.10.2). <br /> 5) Influent and effluent sampling of the OWTS for Nitrate-Nitrogen is required quarterly, and a report <br /> submitted to the EHD annually (State Water Resources Control Board Order WQ 2014-0153-DWQ, <br /> Attachment C3-C4). The samples shall be analyzed by a state certified lab. <br /> 6) An Annual Operating Permit is required for the engineered system. (SJC OWTS 2.10.1-2.10.3) <br /> 7) Onsite well water sampling is required on an annual basis for Nitrate-nitrogen. Samples shall be <br /> analyzed by a state certified lab and a copy of the results submitted to the EHD. <br /> If you have any questions or comments you may reach Aaron Gooderham, REHS, at <br /> a_qooderham(a_sigov.org or (209) 616-3062. <br /> 44u_ - <br /> Steven Shih, REHS <br /> Program Coordinator <br /> CC: Moises Chavez, 11668 South Union Road, Manteca, CA 95336 <br /> 1868 E. Hazelton Avenue I Stockton, California 95205 1 T 209 468-3420 1 F 209 464-0138 1 www.sjcehd.com <br />