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SANnJ0AQUIN a <br /> Environmental Health Department <br /> COUNTY Linda Turkatte, REHS, Director <br /> ca14LP Greatness grows here. Kasey Foley, REHS,Assistant Director <br /> PROGRAM COORDINATORS <br /> Robert McClellon, REHS <br /> Jeff Carruesco, REHS, RDI <br /> Willy Ng, REHS <br /> Muniappa Naidu, REHS <br /> S� Michael Kith, REHS <br /> SCANNED July 14, 2020 N�{i,�',J� <br /> Abby Racco <br /> Live Oak GeoEnviron mental <br /> 407 W. Oak St <br /> Lodi, CA 95240 <br /> RE: Soil Suitability and Nitrate Loading Study and Addendum <br /> 21600 N. Davis Rd., Lodi, <br /> Land Use Application PA-1800093 (MS), Service Request SR0079995. <br /> The San Joaquin County Environmental Health Department (EHD) has received and reviewed Soil Suitability / Nitrate <br /> Loading Study dated November 15, 2018 and the Addendum dated June 29, 2020 prepared by Live Oak <br /> GeoEnvironmental for the referenced property. EHD 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 system <br /> (OWTS) usage and the potential impact of nitrates to groundwater for the proposed project development. The nitrate <br /> loading study was prepared to determine the long-term nitrate loading impact from the proposed OWTS. The proposed <br /> development project includes: <br /> 1. A new tasting room, multiple storage buildings, and an outdoor processing area with a total of wastewater of <br /> 355.1 gallons per day generated by estimated 20 customers per day, 4 employees on varying shifts, and <br /> occupants of an existing private residence. <br /> 2. The wastewater volume of 355.1 gallons per day is not to be used for septic design or size calculation. <br /> Based on the information provided, the EHD can make the following findings: <br /> 1. The SSNL Study supports the suitability for standard OWTS usage for the proposed development project on the <br /> above mentioned parcel, pursuant to San Joaquin County Ordinance Code Title 9, Section 9-1105.2(d), provided <br /> proposed OWTS and 100% replacement area can meet all required minimum setbacks from any water wells. <br /> 2. The bottom of the OWTS dispersal system must meet minimum depth separation of 20 feet to groundwater per <br /> Table 1.10.2 of the San Joaquin County OWTS Standards based on the percolation rate of 2.14 minutes per <br /> inch observed on December 17, 2018. <br /> 3. Sample results of the private domestic well at the referenced property were 0.9 mg/L for Nitrate as NO3 and non- <br /> detect for DBCP at detection limit of 0.01 ug/L <br /> If you have any questions please call Jeffrey Wong, Senior Registered Environmental Health Specialist, at (209) 468- <br /> 0335. <br /> Michael Kith, REHS <br /> Program Coordinator <br /> Cc: Matt Shinn, Block 21 Winery, 21770 N. Davis Rd., Lodi, CA 95242 <br /> 1868 E. Hazelton Avenue I Stockton, California 95205 1 T 209 468-3420 1 F 209 464-0138 1 www.sjcehd.com <br />