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February 2,2006 <br /> NOA Project Number: E05058B <br /> The septic systems in the area appear to utilize leach lines. <br /> 3.6 Septic Repair Permit History in the Vicinity / <br /> No septic system repair permits were found for the vicinity of the Site during file review at EHD on <br /> January 23,2006. <br /> 3.7 Expected On-Site Maximum Septic Tank Usage <br /> According to the NOA Questionnaire, no development of any structures is proposed for the subject / <br /> property. The Site will continue to be farmed. If there is to be any construction, septic system design C <br /> should be based on the On-Site Wastewater 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 Site. / <br /> The Fall 1998 and Spring 1999 maps are the most current maps available from the county. <br /> Examination of these maps indicates that no water level data is available for the Tracy/Banta area, <br /> which includes the Site,and no definite comments as to depth or gradient flow direction can be <br /> made. No groundwater was encountered during any of the drilling of borings to a depth of <br /> approximaley three a-nd a half feet—No�groundwater was encountered during the drilling of a 8.5 <br /> foot boring on February 2,2006. <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 /> soil suitability study. <br /> Potential ground-water contamination can occur from a number of sources which often include <br /> leaky underground storage tanks, agricultural activities, dairies, septic systems, and storm water <br /> infiltration. Any past agricultural activities and the present use of septic s ems-in the area should <br /> be considered potential ground-water contamination sources. Please see e tion 4.4 Or additional <br /> water quality details. <br /> 4.3 Water Sample Location <br /> No well permits were found during file review at the EHD on January 23,2006 for the subject <br /> property.According to the Environmental Questionnaire there are no wells on the subject property. <br /> 4 '0004 <br />