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Waddell Property Page 3 of 8 <br /> NOA Job Number: E07156A <br /> November 1, 2007 <br /> each building cluster has one septic system. Using this method, we determined that there are a <br /> minimum of 40 septic systems per square mile in the immediate vicinity of the site. <br /> 3.5 Septic Permit History in the Vicinity <br /> Based on a file review at the EHD, the septic permits within the vicinity appear to utilize leach / <br /> lines with seepage pits. <br /> 3.6 Septic Repair Permit History in the Vicinity <br /> Based on a file review at the EHD, the septic repair permits within the vicinity appear to be for <br /> the addition of leach lines and seepage pits. <br /> 3.7 Expected On-Site Maximum Septic Tank Usage <br /> Maximum expected usage on each proposed parcel would be for a primary residence and / <br /> second unit dwelling. Septic system design should be based on the On-Site Wastewater <br /> Disposal Standards or other engineering recommendations. <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 <br /> site. The fall 1998 and spring 1999 maps are the most current official maps available from the <br /> County. According to these maps (Plates 3-6), ground water lies between 110 to 120 feet <br /> below ground surface. The flow direction in the site vicinity is indeterminate. <br /> No ground water was encountered by the staff of Neil O. Anderson & Associates, Inc. during <br /> the drilling to a depth of 25.5 feet on October 8, 2007. <br /> 4.2 Potential Ground Water Contamination Issues <br /> Identifying potential ground-water contamination sources was not part of the scope of work for <br /> the soil suitability study. Potential ground-water contamination can occur from a number of <br /> sources which often include leaky underground storage tanks, agricultural activities, dairies, �l ?> <br /> septic systems, and storm water infiltration. Agricultural activities, dairies, and the use of septic <br /> systems in the area should be considered potential ground-water contamination sources. <br /> 4.3 Water Sample Location <br /> On domestic SII exists on the site. Our file review on October 30, 2007, yielded a total of 1 � 3> <br /> well permit at-the subject property. <br /> No water samples were taken for the subject site. <br /> s (a�hYJ-lr . �= i-��•)�'t.UL /!1 Gi !Z/l�/�� /�t?�'G SM��L"s��'CL§� !/f71.�.�Gi/L�g�� <br /> 902 Industrial Way•Lodi,CA 95240•209.367.3701 •Fax 209.369.4228 ©2007 Neil O.Anderson&Associates,Inc <br />