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SAN 10AQUIN Environmental Health Department <br /> COUNTY Jasjit Kang, REHS, Director <br /> Greotness grows here. Muniappa Naidu,REHS,Assistant Director <br /> PROGRAM COORDINATORS <br /> E-MAILED Jeff Carruesco, REHS, RDI <br /> µ� 0Willy Ng, REHS <br /> L� r' Steven Shih, REHS <br /> Elena Manzo, REHS <br /> December 23, 2025 <br /> Natalia Subbotnikova, REHS <br /> To: San Joaquin County Community Development Department <br /> Attention: Francisco Prado <br /> From: Aldara Salinas, (209) 616-3019 <br /> Environmental Health Specialist <br /> RE: PA-2500240 (A, LA), Neighborhood Referral SU-2500953, -954 <br /> 37100 S. Koster Rd., Tracy, APN: 265-090-08, -09, -10 <br /> The following requirements have been identified as pertinent to this project. Other requirements <br /> may also apply. These requirements cannot be modified. <br /> 1. A soil suitability and nitrate loading study incorporating proposed staff and customer use shall <br /> be submitted for each parcel to the Environmental Health Department, indicating that the <br /> area is suitable for septic system usage. The studies must be approved by the Environmental <br /> Health Department prior to issuance of building permit(s). (San Joaquin County Development <br /> Title, Section 9-604.010(d)). The fee will be based on the current schedule at the time of <br /> payment. <br /> The sewage disposal system shall comply with the onsite wastewater treatment systems <br /> standards of San Joaquin County prior to approval. A percolation test conducted in <br /> accordance with the E.P.A. Design Manual - Onsite Wastewater and Disposal Systems is <br /> required for each parcel. The fee will be based on the current schedule at the time of <br /> payment. <br /> 2. Prior to issuance of building permit, submit to the Environmental Health Department revised <br /> site plans for each parcel, showing the location and configuration of any existing and <br /> proposed sewage disposal systems, along with the area required to be reserved for future <br /> sewage disposal repair/replacement (area for 100% sewage disposal replacement). The <br /> plans shall include the design calculations, including the maximum number of persons the <br /> sewage disposal system is proposed to serve. In addition, show on revised plans that the <br /> disposal field area will be barricaded so it cannot be driven over, parked on, or used as a <br /> storage area. This disposal field area must be used for that specific purpose only, and it <br /> cannot contain any underground utility lines (San Joaquin County Development Title, Section <br /> 9-605.010(c)(3)(5)). <br /> 3. Construction of an individual sewage disposal system(s) for each parcel under permit and <br /> inspection by the Environmental Health Department is required at the time of development <br /> based on the Soil Suitability/ Nitrate Loading Study findings (San Joaquin County <br /> Development Title, Section 9-605.010). <br /> 1868 E. Hazelton Avenue I Stockton, California 95205 1 T 209 468-3420 1 F 209 468-3877 1 www.sjgov.org/ehd <br />