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"c°� Environmental Health Department <br /> COUNTY Linda Turkatte, REHS, Director <br /> Greatness grows here. Kasey Foley,REHS,Assistant Director <br /> PROGRAM COORDINATORS <br /> COPY Robert , lon,REHS <br /> Jeff CarruescoescoREHS, RDI <br /> Willy Ng,REHS <br /> Muniappa Naidu, REHS <br /> Michael Kith, REHS <br /> September 13, 2019 <br /> Brian W. William <br /> Advanced Geo Environmental <br /> 837 N. Shaw Rd <br /> Stockton, CA 95215 <br /> RE: Soil Suitability/Nitrate Loading Study <br /> Highway 120, Ripon, CA <br /> APN 203-220-76 SR0081083. <br /> The San Joaquin County Environmental Health Department (EHD) has reviewed the Soil <br /> Suitability/Nitrate Loading (SSNL) Study, dated August 13, 2019 and submitted on August 27, 2019. <br /> The SSNL Study was prepared to review the suitability of the above noted parcel for onsite <br /> wastewater treatment system (OWTS) usage, including the potential impact of nitrate to <br /> groundwater, for the proposed 1,800 square foot residence the above noted location. The EHD has <br /> the following comments: <br /> Annual Rainfall- Recharge Value. In Section 9.2, the estimated value for rainfall-recharge ("deep <br /> percolation") is not given however, in the calculations that follows in (Section 9.6), a value of 11.50 <br /> inches is inserted for R, without any rationale or reference. <br /> Water Well Usage. In Section 3.6, it is stated that the domestic water well located on 17699 Hwy <br /> 120 will serve the subject site. Provision of water to a residence from an off-site private, domestic <br /> water well located on a separate recorded parcel is prohibited (San Joaquin County Development <br /> Title, Section (9-1115.8 (b)). <br /> Please submit addendum to SSNL to address the above comments to EHD. <br /> If you have any questions please contact Michael Kith, REHS, at (209) 468-3444 or <br /> mkith sjgov.org. <br /> MichaI Kith, REHS <br /> Program Coordinator <br /> 1868 E. Hazelton Avenue I Stockton, California 95205 1 T 209 468-3420 1 F 209 464-0138 1 www.sjcehd.com <br />