Laserfiche WebLink
L � � <br /> March 17, 2005 <br /> NOA Project Number: E040141B <br /> L3.7 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-Site Wastewater Disposal Standards or <br /> other engineering recommendations. <br /> 4.0 GROUND WATER INFORMATION <br /> L4.1 Ground Water Depth and Gradient <br /> The San Joaquin County Flood Control and Water Conservation District (1998 and 1999) ground <br /> Lwater 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 /> LThe ground water contours in the area of the Site are not drawn on the ground water map. p <br /> Examination of these maps indicates that no water level data is available for the Delta area,which/^' V <br /> includes the Site,and no definite comments as to depth orZradient flow direction can be made. <br /> LHowever, our office estimates that et grTi oundwater in the area is near the ground surface. <br /> Ground water was encountered by the staff of Neil O.Anderson&Associates, Inc. during the <br /> Ldrilling of the percolation test holes to a depth of 3 feet on February 11 SOS_The ground water in <br /> the borings was at a tT sur ace or just below the surface of the boring. <br /> 4.2 Potential Ground Water Contamination Issues <br /> ►. <br /> Identifying potential ground-water contamination sources was not part of the scope of work for the <br /> soil suitability study. A Surface and Subsurface Contamination Report addressed this issue (NOA, <br /> 2005). Please refer to this report for descriptions. <br /> Potential ground-water contamination can occur from a number of sources which often include <br /> 60 leaky underground storage tanks,agricultural activities, dairies,septic systems,and storm water <br /> infiltration. Any past agricultural activities and the present use of septic systems in the area should <br /> be considered potential ground-water contamination sources. <br /> r <br /> 4.3 Water Sample Location <br /> LNo permits were found for the site during file review at EHD on November 2, 2005. <br /> No wells exist on the property, so no water samples were taken. <br /> L <br /> 4 <br /> L '4A <br /> I <br /> v <br />