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rs 'r/ <br /> September 9, 2005 <br /> NOA Project Number: E05106B <br /> 3.6 Septic Repair Permit History in the Vicinity <br /> The following septic system repair permit was found for the vicinity of the Site during file review at <br /> EHD on August 23, 2005: <br /> Table 2. <br /> Vicinity Septic System Repair Permit Summary. <br /> Address,Date Tank Lines,Length,Pits Comments <br /> Capacity <br /> 11845 East Norman Avenue One 50'leach line One <br /> 10-31-84 33"b 25'seepage it Addition/Repair <br /> ■- The repair permits are for the addition of a leach line and a seepage pit. <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. One residence is currently located on the proposed Parcel 1. Septic system design <br /> should be based on the On-Site Wastewater Disposal Standards or other engineering recommendations. <br /> r. <br /> 4.0 GROUND WATER INFORMATION <br /> 4.1 Ground Water Depth and Gradient <br /> The San Joaquin County Flood Control and Water Conservation District (1998 and 1999) ground <br /> 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 80 and 100 feet below ground <br /> surface and flows at a gradient of about 8 feet per mile to the north in the vicinity of the Site. <br /> W <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 August 18,2005. <br /> 4 <br />