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L <br /> L February 21,2007 <br /> NOA Project Number. E07015A <br /> LAddress,Date Tank Lines,Length,Pits Comments <br /> Capacity <br /> 9508 S.Harlan Road 1600 gal Installation of 1600 gal tank Repair/Addition <br /> 5-15-79 and 10 x 80 filter bed <br /> The repair permits found in the vicinity were for the addition of leach lines, sumps and filter beds. <br /> 3.7 Expected On-Site Maximum Septic Tank Usage <br /> L The maximum expected septic tank usage for the site will be from five to ten employees working on <br /> the subject property and 40 to 50 customers per day. The operation will be open normal business <br /> Lhours, five days per week. One septic system is being proposed for construction. Septic system <br /> design should be based on the On-Site Wastewater Disposal Standards or other engineering <br /> recommendations. <br /> L <br /> 4.0 GROUND WATER INFORMATION <br /> I <br /> 4.1 Ground Water Depth and Gradient <br /> LThe 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 20 and 30 feet below ground <br /> surface and flows at an indeterminate gradient in the vicinity of the site. <br /> LNo ground water was encountered by the staff of Neil O.Anderson&Associates, Inc. during the <br /> drilling of one groundwater boring to a depth of 8.5 feet below ground surface on January 25, 2007. <br /> L4.2 Potential Ground Water Contamination Issues <br /> Identifying potential ground-water contamination sources was not part of the scope of work for the <br /> L soil suitability study. Potential ground-water contamination can occur from a number of sources <br /> which often include leaky underground storage tanks, agricultural activities,dairies, septic systems <br /> L and storm water infiltration. Agricultural activities and the use of septic systems in the area should <br /> be considered potential ground-water contamination sources. <br /> 4.3 Water Sample Location <br /> According to Mike Smith, there are no wells on site. No well was observed by our office on January <br /> L 26,2007 during the percolation testing. Two well permits were found during file review at EHD on <br /> January 4,2007. The first permit was issued in April of 1989 for the destruction and replacement of <br /> L 4 "004 <br />