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u %d <br /> ` December 6, 2004 <br /> NOA Project Number: E040130A <br /> 0.0 EXISTING AND PROPOSED SEPTIC TANK USAGE <br /> 6. <br /> L ✓3.1 Existing On-Site Septic Tank Usage <br /> In his responses to the questionnaire,Mr. Watts said that there is no septic system currently on the <br /> L property. No permits were found on file with EHD for the subject site during file review on <br /> November 2, 2004. <br /> L /V3.2 On-Site Septic Permit History <br /> No septic permits were found for the Site during file review at EHD on November 2, 2004. <br /> L3.3 On-Site Septic Repair Permit History <br /> LNo septic repair permits were found for the Site during file review at EHD on November 2,2004. <br /> x,.3.4 Existing Septic Tank Usage in the Vicinity <br /> LIn 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 building <br /> Lcluster has one septic system. Using this method,we determined that there are a minimum of 1 <br /> septic system per square mile in the immediate vicinity of the Site. <br /> LThe general use of the vicinity is cattle range land,vineyards and orchards. There are very few <br /> residences in the area. <br /> L ✓ 3.5 Septic Permit History in the Vicinity <br /> L The following septic system permits were found for the vicinity of the Site during file review at <br /> EHD on November 2,2004: <br /> Table 1. <br /> Vicinity Septic System Permit Summary. <br /> Address,Date Tank Lines,Length,Pits Comments <br /> Capacity <br /> 17200 East Liberty Road, 1,200 gal Three 50-ft leach lines,three 33-in New installation to <br /> 5/18/72 diameter by 25-ft deep seepage pits residence. <br /> 17700 East Liberty Road, 1,200 gal Three 40-ft leach lines,three 33-in New installation to <br /> 8/10/02 diameter by 25-ft deep seepage pits residence. <br /> v <br /> The majority of septic systems in the area appear to utilize leach lines with seepage pits. <br /> v <br /> 3 <br /> I <br /> '-444 <br /> L <br />