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E <br /> November 30, 2007 <br /> NOA Project Number: E07188A <br /> F! Table 2. <br /> Vicinity Septic System Repair Permit Summary <br /> 0 <br /> Address,Date Tank Lines,Length, Pits Comments <br /> Capacity <br /> 10365 South Manthey Road Addition of one,40'leach line Repair/Addition <br /> ri8-26-1987 and one,12'x 2'x 10' sump <br /> 9653 Manthey Road One,50'leach line and Repair/Addition <br /> 0 5-20-1994 One 4'x 12'x 10' sum <br /> The repair permits found in the vicinity were for the addition of leach lines and sumps. <br /> F! 3.7 Expected On-Site Maximum Septic Tank Usage <br /> The maximum expected septic tank usage for the site will be from various buildings. An office <br /> building will have five to six people working with no customers. Six to eight employees-and no <br /> C ustomers will work at a repair s op on site. a c g will have four people working, and <br /> there will be four people working at a washing facility. Fort�to fifty truckers will be comin_g � <br /> going throw hout the day. The facility will be open normal business hours, five days a week in the <br /> approximately eight winter months of November through June, and will be open six days a weep in <br /> the summer months,July though October. Several septic systems are being proposed for <br /> F1 construction. Septic system design should be based on the On-Site Wlastewater Disposal Standards or <br /> other engineering recommendations. <br /> F1 <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 10 and 20 feet below ground <br /> surface and flows at an indeterminate gradient in the vicinity of theis e <br /> F14.2 Potential Ground Water Contamination Issues <br /> Identifying potential ground-water contamination sources was not part of the scope of work for the <br /> 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 /> and storm water infiltration. Agricultural activities and the use of septic systems in the area should <br /> Fbe considered potential ground-water contamination sources. <br /> 4 <br />