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F_; <br /> June 27, 2005 <br /> NOA Project Number: E05087A <br /> 3.2 On-Site Septic Permit History <br /> F1No septic permits were found for the Site during file review at EHD on June 11,2005, <br /> 3.3 On-Site Septic Repair Permit History <br /> No septic repair permits were found for the subject property during file review at EHD on June 11, <br /> 2005. <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 <br /> (www.tetras erver.microsoft.coin). We counted the building clusters within one square mile of the <br /> Site, and made the assumption that each building cluster has one septic system. Using this method, <br /> we determined that there are a minimum of 200 septic systems per square mile in the immediate <br /> vicinity of the Site. A square mile encompasses part of the city of Lo These houses are not ely <br /> using septic systems but were counted anyway. This accounts for the high number of septic systems <br /> in the vicinity. <br /> The general area consists of residences and agriculture. <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 June 11, 2005: <br /> Table 1. <br /> 0 Vicinity Septic System Permit Summary. <br /> Address,Date Tank Lines,Length,Pits Comments <br /> F1Capacity <br /> 11769 North State Route 99, Two 85 foot leach lines and two 33 New installation to <br /> 58/25/1984 1,200 gal inch diameter by 25 foot deep residence. <br /> seepage pits <br /> 11780 North Highway 1 200 gal One 90 foot leach line New installation to <br /> 99,11/15/1973 commercial business. <br /> Fi11799 North Highway, 99, Three 40 foot leach lines and a New installation to <br /> 11/16/1992 1,600 gal sump 6'by 30'by 8' residence. <br /> 11811 North Highway 99, Two 50 foot leach lines and one 48 New installation to trailer <br /> # 6/13/1963 1,500 gal inch diameter by 25 foot deep <br /> court, <br /> seepage pit <br /> The septic systems in the area appear to utilize leach lines and pits or sumps., <br /> FI <br /> 3 <br /> i <br />