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K Michael Kith, REHS Program Coordinator <br /> N Environmental Health Department <br /> San Joaquin County <br /> February 11,2020 <br /> Page 2 of 2 <br /> nuisance. A disposal field at this site cannot meet the requirements of the OWTS Standards, likely cannot <br /> meet RWQCB Tier 1 requirements for OWTS Policy,and would not be protective of ground and/or <br /> surface waters. The engineer-designed wastewater holding tank system has been proposed instead of an <br /> alternative treatment system because it does not include a discharge of treated wastewater and will be <br /> protective of ground and/or surface water quality. <br /> The SJC EHD also has indicated concern that the site may be located in the floodway,and has advised that septic <br /> systems in floodways are prohibited according to San Joaquin County Department of Public Works,Flood and <br /> Water Resources Division. As shown on FEMA Flood Insurance Rate Maps,Panel 0280F of San Joaquin <br /> County, California and Incorporated Areas,the site for the proposed wastewater holding tank is not located in a <br /> floodway,although the site is within a FEMA Zone AE Special Flood Hazard Area(SFHA)with a floodplain <br /> elevation of 9 ft(NAVD 88).A copy of Panel 0280F is attached. The holding tank system has been designed to <br /> resist flotation and spill under flooding conditions that may occur. Likewise,the proposed design is for a <br /> holding tank system,not a septic system. <br /> We appreciate the SJC EHD's consideration of this information and we will be assisting the Association in <br /> making application to the SJC EHD for construction of the new holding tank system. If you have any questions, <br /> please contact me at ebeckenstein a ksninc.com or(916)403-5900. <br /> Sincerely, <br /> KJELDSEN, SINNOCK&NEUDECK,INC. <br /> Elisabeth A. Beckensten, RCE 88222 <br /> Enclosure <br /> SJC EHD February 5,2020 Email Correspondence <br /> SJC FEMA FIRM Panel 0280F <br /> Grindstone Joe's Permit Plan Set Submittal <br />