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L <br /> LNovember 8,2004 <br /> NOA Project Number: E0401 10A <br /> LTable 2. <br /> 4-'Vicinity Septic System Repair Permit Summary. <br /> Address,Date Tank Lines,Length,Pits Comments <br /> Capacity <br /> 9144 E.Jahant,10-17-85 Not reported Two 36 inch pits,25 feet deep Addition of two new pits to <br /> Lexisting system <br /> 9144 E.Jahant,11-04-03 Not reported Two leach lines 40'and Four Addition of two lines and our <br /> its 36'wide 25'deep pits to existin s stem <br /> Both repair permits involved additions to the same system. <br /> f. X3.7 Expected On-Site Maximum Septic Tank Usage <br /> Maximum expected usage would be for a primary residence and second dwelling unit on each <br /> parcel. Septic system design should be based on the On-Site Wastewater Disposal Standards or other <br /> engineering recommendations. <br /> j 4.0 GROUND WATER INFORMATION <br /> L <br /> X4.1 Ground Water Depth and Gradient <br /> The San Joaquin County Flood Control and Water Conservation District(1998 and 1999) ground <br /> L water depth and elevation maps were reviewed to determine the ground water levels near the Site. <br /> 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 100 and 120 feet below ground <br /> surface and flows atarg adient of five to twelve feet per mile to the north 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 twelve percolation test holes to a depth of 25 feet on September 14, 15 and 16, 2004. <br /> .l`�4.2 On Site Well Permit History <br /> NOne agricultural well exists on the Site. One domestic well was recently abandoned under the <br /> oversight of EHD. <br /> L One well permit was found during file review at EHD on September 7, 2004. This permit, dated <br /> November 1, 1972,is for the installation of a new"test pump well." No further details of the well <br /> are given on the permit. <br /> `r <br /> L <br /> 4 <br /> i <br /> i� <br />