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L <br /> LFebruary 3, 2005 <br /> NOA Project Number: E040143A <br /> LNo ground water was encountered by the staff of Neil O.Anderson&Associates,Inc. during the <br /> drilling of the percolation test holes to a depth of 3 feet on December 2, 2004. <br /> L4.2 Potential Ground Water Contamination Issues <br /> Identifying potential ground-water contamination sources was not part of the scope of work for the <br /> Lsoil suitability study. However, the Site is a former dairy and other dairies are located near the <br /> subject property. Dairies are known as a potential sources of nitrogen which may raise the level of <br /> Lnitrate in the groundwater. <br /> Other potential ground-water contamination can occur from a number of sources which often <br /> include leaky underground storage tanks, agricultural activities, dairies,septic systems,and storm <br /> Lwater infiltration. Any past agricultural activities and the present use of septic systems in the area <br /> should be considered potential ground-water contamination sources. <br /> E <br /> L <br /> 1 4.3 Water Sample Location <br /> No well permits were found for the subject property address of 275 Homestead Road during review <br /> on December 7, 2004. <br /> A water sample was taken from the pipe manifold near the well head near the house and barn <br /> structures on Kasson Road,the adjacent property owned by the same person, (Plate 1) on <br /> LDecember 16,2004,no well on the subject property. <br /> 4.4 Water Sample Constituents <br /> LThe water sample was analyzed for nitrate and DBCP. Nitrate was found at 38.9 mg/L-NO3,below <br /> the maximum contaminant level (MCL) set by the US EPA of 45 mg/L-NO3. DBCP was not <br /> t detected in the water sample. The analytical reports prepared by Precision Enviro-Tech can be <br /> found in the appendix of this report. <br /> LThe presence of nitrates is not uncommon in shallow ground water aquifers in San Joaquin County <br /> and other parts of the Central Valley. Nitrate in ground water occurs as a result of the application <br /> of fertilizers,livestock waste, and untreated septic tank waste. Nitrate is mobile and often <br /> L accumulates in the shallow ground water zones. <br /> 1 <br /> L <br /> L 5 '004 <br />