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Existing and Proposed Septic Tank Usage <br /> P <br /> Existing Septic System <br /> Two septic systems currently exist on the Site, one at the residence and one at the <br /> agricultural storage building. Both systems utilize leach lines and seepage pits. <br /> Proposed Septic System <br /> According to the proposed site plan, the renovated agricultural building will utilize the <br /> existing septic system to serve a small restroom. The San Joaquin County <br /> Environmental Health Department may require an upgrade (expansion) to the system <br /> for commercial use. <br /> On-Site Septic Permit History <br /> Two septic system installation permits were found for the Site at the San Joaquin <br /> County Environmental Health Department. In September 1987 a new system was <br /> installed at the 3-bedroom residence. The residential system utilizes a 1,600-gallon <br /> tank, three 100-foot leach lines, and three 33-inch diameter by 25-foot deep seepage <br /> pits. In January 2000 a new system was installed at the agricultural storage building. <br /> This system utilizes a 1,200-gallon tank, -one 40-foot leach line, and two 36-inch <br /> diameter by 25-foot deep seepage pits. No permits for septic system repairs were <br /> identified for the Site. <br /> Two permits related to the domestic water well were also identified for the site. All <br /> permits for the property are attached in Appendix 4. <br /> Existing Septic Tank Usage in the Vicinity <br /> To determine the existing septic system usage in the area, our office counted septic <br /> systems that exist approximately one square mile surrounding the property. Recent air <br /> photo imagery from GoogleEarthTM was used. Each building cluster on the photo was <br /> assumed to have one septic system. Using this method, we determined that there is a <br /> minimum of 47 septic systems per square mile in the immediate vicinity of the Site. <br /> The general area consists of vineyards, pasture land, and rural residential properties. <br /> Septic Permit History in the Vicinity <br /> Based on a recent review of septic permits on file at the San Joaquin County <br /> Environmental Health Department for nearby properties, the septic systems in the area (3 <br /> utilize leach lines and seepage pits. The septic permits can be found in Appendix 4 of <br /> this report. <br /> LOGE1005 Page 2 <br />