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December 11, 2006 <br /> NOA Project Number: E06141A <br /> 3.4 Existing Septic Tank Usage in the Vicinity <br /> In an attempt to determine the septic system density for the vicinity of the Site, our office reviewed <br /> a 1993 aerial photograph of the subject property available from Microsoft Terraserver. We counted , <br /> the building clusters within one square mile of the Site, and made the assumption that each bruil g <br /> cluster has one septic system. Using this method,we determined that there are a minimum bf 4 <br /> septic systems per square mile in the immediate vicinity of the Site. <br /> The general area consists of agriculture with low residential development. <br /> 3.5 Septic Permit History in the Vicinity <br /> The following septic system permits were found for the vicinity of the site during file review at <br /> EHD on December 5, 2006: <br /> Table 1. <br /> Vicinity Septic System Permit Summary <br /> Address,Date Tank Lines,Length, Pits Comments <br /> Capacity <br /> 2690 South Austin Road 1600 gal Two,40'leach lines, New installation to a residence <br /> 6-17-03 Two,12"x 10'sumps <br /> 26947 South Austin Road 1200 gal Two,100'leach lines New installation to a residence <br /> 4-6-87 <br /> 26261 South Austin Road 1200 gal l Two,80'leach lines New installation to a residence <br /> 12-21-99 <br /> w The septic systems in the area appear to utilize leach lines; some with sumps. <br /> 3.6 Septic Repair Permit History in the Vicinity <br /> No eptic system repair permits were found for the vicinity of the Site during file review at EHD on <br /> March 15, 2006. <br /> 4 }, <br />