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Existing and Proposed Septic Tank Usage <br /> Existing Septic System <br /> One septic system is currently located on the Site. <br /> Proposed Septic System <br /> A new septic system will be constructed to serve the new house. <br /> On-Site Septic Permit History <br /> The San Joaquin County Environmental Health Department septic permit files were <br /> searched for the Site address. Two permits were identified: <br /> • January 1964 permit for an addition to an existing residential septic system. The <br /> permit indicated the system utilized a 1,200-gallon septic tank and a 50-foot , <br /> leach line. <br /> • June 1983 permit for an addition to an existing residential septic system. The I v' <br /> permit indicated a 1,500-gallon tank, three 40-foot leach lines, and three 25-foot- <br /> deep by 38-inch diameter seepage pits. <br /> The septic permits can be found in Appendix 2. <br /> Existing Septic Tank Usage in the Vicinity <br /> To estimate the septic system usage in the area, our office counted septic systems that <br /> exist within approximately one square mile surrounding the property. Air photo imagery <br /> from Google Earth was used. Each building cluster on the photo was assumed to have <br /> one septic system. Using this method, it is estimated that at least 190 septic systems <br /> per square mile are located in the immediate vicinity of the Site. <br /> The area surrounding the Site consists primarily of rural residential lots. A golf course is <br /> located approximately one-third of a mile southwest of the Site. <br /> Septic Permit History in the Vicinity <br /> Based on a review of septic permits on file at the San Joaquin County Environmental <br /> Health Department for nearby properties, most septic systems in the area utilize leach <br /> lines and seepage pits. The septic permits can be found in Appendix 2 of this report. <br /> LOGE 1931 Page 2 <br />