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L May 18, 2005 <br /> NOA Project Number: E05059A <br /> Yl 3.6 Septic Repair Permit History in the Vicinity <br /> The following septic system repair permits were found for the vicinity of the Site during file review <br /> at EHD on March 3,2005. <br /> Table 2. <br /> Vicinity Septic Repair Permit Summary. <br /> Address,Date Tank Capacity Comment <br /> 19300 E.Kettleman Ln.,6/8/77 1,200 gal Replacement of existing residential unit with three 40-ft <br /> leach lines and three 25-ft deep by 33-in diameter seepage <br /> pits. <br /> 20550 E.Kettleman Ln.,4/6/72 Not reported Addition of one 100-ft line and two 25-ft deep by 33-in <br /> diameter seepage pits to existing residential unit. <br /> 20550 E.Kettleman Ln.,6/10/80 Not reported .Addition of two 25-ft deep by 33-in diameter seepage pits <br /> to each of two systems for separate mobile homes. <br /> V 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-Sate Wastewater Disposal Standards or <br /> other engineering recommendations. 0,<'- <br /> 4.0 GROUND WATER INFORMATION <br /> ✓4.1 Ground Water Depth and Gradient <br /> L 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 190 and 230 feet below ground <br /> surface and flows at a gradient of about five to ten feet per mile to the west or southwest in the <br /> vicinity of the Site. <br /> No ground water was encountered by the staff of Neil O.Anderson&Associates, Inc. during the <br /> drilling of two percolation test holes to depths of 16 and 20 feet on May 5,2005. <br /> 4 <br /> L <br /> L <br />