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April 15, 2005 <br /> NOA Project Number: E040154A <br /> 3.6 Septic Repair Permit History in the Vicinity <br /> T The following septic system repair permits were found for the vicinity of the Site during file review <br /> Fjat ET-ID on January 6,2005: <br /> Table 2. <br /> Vicinity Septic S stem Repair Permit Summary. <br /> Address,Date Tank Lines,Length,Pits Comments <br /> 1 Capacity_ ._ <br /> 9055 Biedermann,10-11-99 Not reported One 40 foot leach line Repair/ addition of one leach line <br /> f and one 2'by 14'by 12' and one filter bed for a residence / <br /> filter bed l 3.0 <br /> 9101 Biedermann,03-05-04 Not reported One 40 foot leach line Repair/ addition of one leach line <br /> and one 25 foot and one seepage pit for a residence <br /> seepage pit <br /> ' The repair permits are for the additions of leach lines and sumps or filter beds. <br /> a <br /> El <br /> 3.7 Expected On-Site Maximum Septic Tank Usage <br /> Maximum expected usage on each proposed parcel would be for a primary residence and second <br /> dwelling unit Septic system design should be based on the On-Site Wlastewater Disposal Standards or <br /> other engineering recommendations. <br /> 3 4.0 GROUND WATER INFORMATION <br /> 4.1 Ground Water Depth and Gradient <br /> F1 <br /> r Conservation District 1998 and 1999 round <br /> The San Joaquin County Flood Control and Wate C ( ) g <br /> water depth and elevation maps were reviewed to determine the ground water levels near the Site. <br /> F1 The Fall 1998 and Spring 1999 maps are the most current official maps available from the County. <br /> According to these maps (Plates 3-6),ground water lies between 90 and 110 feet below ground C <br /> 0 surface and flows at a gradient of about 8 feet per mile to the northwest in the vicinity of the Site. <br /> No ground water was encountered by the staff of Neil O.Anderson&Associates, Inc. during the <br /> drilling of the percolation test holes to a depth of 25 feet on March 17, 2005 or eight and a half feetF1 <br /> on April 11, 2005. <br /> Fj <br /> F1 <br /> 4 <br /> F . '0044 <br />