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LDecember 6,2005 <br /> NOA Project Number: E05128A <br /> Address,Date Tank Lines,Length,Pits Comments <br /> Capacity <br /> 31396 South Highway 33 <br /> 12-19-84 -- Three,70'leach lines Repair/Addition <br /> 3.7 Expected On-Site Maximum Septic Tank Usage <br /> ` <br /> According to personal communication on September 20,2005 with James Thoming,the site is to <br /> remain agricultural. Each parcel's maximum on-site septic tank usage could be for a primary <br /> ho residence and a secondary dwelling unit. If there is to be any construction of a septic system, septic <br /> system design should be based on the Environmental Health Department On-Site Wastewater Disposal <br /> 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. lJi <br /> Examination of these maps indicates that no water level data is available for the Tracy/Banta area, A <br /> which includes the Site,and no definite comments as to depth or gradient flow direction can be <br /> made. Orr September 22, 2005,our office drilled a groundwater boring on the subject property to a <br /> depth of 8.5 feet;no groundwater was encountered. <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 leaky . <br /> ` underground storage tanks,agricultural activities,dairies, septic systems, and storm water infiltration. <br /> Any past agricultural activities and the present use of septic systems in die area should be considered <br /> potential ground-water contamination sources. Please see section 4.4 for additional water quality.:�fl6,C) <br /> details. ` <br /> 4.3 Water Sample Location 1�a" <br /> p <br /> According to James Thoming,no wells exist on the subject property;no water sample was taken. <br /> 4 .14 <br /> �v <br /> L <br />