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SAN JOAQUIN Environmental Health Department <br /> COUNTY Jasjit Kang, REHS, Director <br /> Muniappa Naidu, REHS,Assistant Director <br /> r, .� ��' Greatness grows here. PROGRAM COORDINATORS <br /> Jeff Carruesco, REHS, RDI <br /> EMAILED Willy Ng, REHS <br /> Steven Shih, REHS <br /> �112�2�p C;MElena Manzo, REHS <br /> Natalia Subbotnikova, REHS <br /> June 10, 2026 <br /> To: San Joaquin County Community Development Department <br /> Attention: Francisco Prado <br /> From: Rena' LeRoy (209) 616-3021 Air <br /> Registered Environmental Health Specialist <br /> RE: PA-2600118 (MS), Application Referral, SU-2601286 <br /> 20450 S Murphy Rd, Ripon <br /> The following requirements have been identified as pertinent to this project. Other <br /> requirements may also apply. These requirements cannot be modified. <br /> 1) A qualified environmental professional shall prepare a surface and subsurface contamination <br /> report, identifying any potential source of surface or subsurface contamination caused by <br /> past or current land uses. The report shall include evaluation of non-point source of <br /> hazardous materials, including agricultural chemical residues, as well as potential point <br /> sources, such as fuel storage tanks, septic systems, or chemical storage areas. If the report <br /> indicates there is contamination, corrective action shall be taken, as recommended in the <br /> report and concurred with by Environmental Health prior to recordation of Parcel Map. (San <br /> Joaquin County Development Title, Section 9-502.070(a)(c)). <br /> The fee will be based on the current schedule at the time of payment. <br /> Note: EHD has reviewed the surface & subsurface report dated December 5, 2025 and <br /> found it meets the applicable Development Title requirements. <br /> 2) A soil suitability and nitrate loading study incorporating proposed staff and customer use shall <br /> be submitted to the Environmental Health Department, indicating that the area is suitable for <br /> septic system usage. The studies must be approved by the Environmental Health <br /> Department prior to recordation of Parcel Map. (San Joaquin County Development Title, <br /> Section 9-604.010(d)). <br /> The fee will be based on the current schedule at the time of 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 /> 1868 E. Hazelton Avenue I Stockton, California 95205 1 T 209 468-3420 1 F 209 464-0138 1 www.sjgov.org/ehd <br />