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°amu'"c�z SAN�JOAQUIN a <br /> ' Environmental Health Department <br /> " COUNTY <br /> � Wayne Fox, RENS, Interim Director <br /> '10FO 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 /> August 17, 2020 ORIGINAL <br /> Mike Robustelli <br /> McManis Family Vineyards, Inc <br /> 18700 E. River Road <br /> Ripon, CA 95366 <br /> RE: Soil Suitability/Nitrate Loading Study <br /> 18700 E. River Rd, Ripon <br /> APN 245-220-28, 29, 30, SR0082378 <br /> The San Joaquin County Environmental Health Department (EHD) has reviewed the Soil Suitability/Nitrate <br /> Loading (SSNL) Study, dated July 24, 2020 and submitted on July 27, 2020 for the above noted location, and <br /> 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 proposed project <br /> development. The proposed development project includes: <br /> 1. A 6,160 square foot production building. <br /> 2. The OWTS usage wastewater average of 770 gallons a day from existing office building, existing <br /> warehouses and the proposed production building. The OWTS wastewater of 770 gallons a day is not <br /> to be used for septic design or size calculation. <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), provided the existing and proposed OWTS and <br /> 100% replacement areas can meet all required minimum setbacks from any water wells. <br /> 2. SSNL study is an analysis to determine the suitability of the soil for septic system and its potential <br /> long-term impact of nitrates to groundwater. The proposed septic design stated in the SSNL study is <br /> not approved. The septic design shall be submitted to Environmental Health Department separately <br /> for review and approval. The septic sizing and calculation shall conform to OWTS Section 6. <br /> 3. The water sample data show the well being utilized for drinking water has an elevated level of nitrate <br /> nitrogen of 24.7 mg/L 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 /> 1868 IE. Hazelton Avenue I Stockton, California 952051 T 209 468-3420 1 F 209 464-0138 1 www.sjgov.org/ehd <br />