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Traylor Shea Precast Page 3 of 14 <br /> Our Project Number: E07111't8 <br /> November 29, 2007 <br /> I.3.4 Existing Septic Tank Usage in the Vicinity ,S <br /> In an attempt to determine the septic system density for the vicinity of the Site, our office <br /> reviewed a 2002 aerial photograph of the subject property available from Microsoft Terraserver. <br /> We counted the building clusters within one square mile of the Site, and made the assumption <br /> that each building cluster has one septic system. Using this method, we determined that there <br /> are a minimum of 70 septic systems per square mile in the immediate vicinity of the Site. <br /> The general area consists of industrial,rural residential, and vacant land. <br /> I.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 November 19, 2007: <br /> Table 1. <br /> Vicinity Septic System Permit Summary. <br /> Address Date Tank Lines, Pits Comments <br /> Capacity <br /> 3604 Newton Rd. 6-9-72 1,800 (2) 85' leach lines, (2) 25' New installation to <br /> deep by 33"diameter residence. <br /> seepage pits <br /> 3831 Newton Rd. 9-30-74 1,200 (2) 80' leach lines New installation to <br /> office. <br /> 3912 Newton Rd. 4-17-97 1,600 (3) 60' leach lines, (3) 25' New installation to <br /> deep by 42"diameter office. <br /> seepage pits <br /> 3932 Newton Rd. 7-28-98 N/A N/A New installation of <br /> oil, sand, grease <br /> separator unit loop <br /> system. <br /> 3931 Newton Rd. 6-20-85 1,200 (2) unspecified leach lines New installation of <br /> sand/oil separator <br /> unit. <br /> The septic systems in the area appear to utilize leach lines and seepage pits. <br /> I.3.6 Septic Repair Permit History in the Vicinity <br /> The following septic system repair permits were found for the vicinity of the Site during file <br /> review at EHD on November 19, 2007: <br /> L <br /> 902 Industrial Way•Lodi,CA 95240•209.367.3701 •Fax 209.369.4228 02007 Neil O.Anderson&Associates.Inc <br />