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P <br /> March 28, 2007 <br /> y NOA Project Number: E06122A <br /> k Table 1. tj <br /> Estimated Sewage Disposal Rates <br /> Rate <br /> Parldng Spaces Use Number of (From SJC Onsite Average Daily Flow <br /> Parking Spaces Waste Water Disposal (gallons) <br /> Standards) <br /> J <br /> Professional/Administration 5% 6.5 15 gpd 97.5 <br /> j Manufacturing 10% 13 15 gpd 195 <br /> Retail 15% 19.5 150 gal/fixture X 3 450 <br /> Construction 20% 26 15 gpd 390 <br /> Warehouse/Distribution 40% 52 15 gpd 780 <br /> Miscellaneous 10% 13 15 gpd 195 <br /> F <br /> TOTAL DAILY FLOW 2,107.5 <br /> f Septic system design should also be based on the On-Site Wastewater Disbosal Standards or other <br /> engineering recommendations. <br /> 4.0 GROUND WATER INFORMATION <br /> E <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 60 and 70 feet below ground <br /> surface in the vicinity of the Site. Due to the complex shape of the contours in the area,it is <br /> difficult to measure the gradient in the immediate vicinity of the site. <br /> r <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 September 28, 2006. <br /> 4.2 Potential Ground Water Contamination Issues <br /> Identifying potential ground-water contamination sources was not part of the scope of work for the <br /> F1soil suitability study. <br /> 0 <br /> 4 <br /> Fi <br /> r <br />