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SURFACE WATER ANALYTICAL RESULTS <br /> THIRD QUARTER 2007 <br /> FORWARD UNIT <br /> SAN JOAQUIN COUNTY, CALIFORNIA <br /> FSW-1 FSW-2 <br /> Analyte Units 8/15/07 8/15/07 <br /> Field Parameters <br /> H Units 7.09 7.04 <br /> Specific Conductance µmhos/cm 625 582 <br /> Tem erature °C 20.3 22.3 <br /> Turbidity NTUs 17 105 <br /> Monitoring Parameters <br /> Arsenic mg/I 0.0038 0.0028 <br /> Barium mg/1 0.210 <br /> 0.260 <br /> Bicarbonate <br /> mg/1 330 260 <br /> Calcium mg/1 66 60 <br /> Carbonate mg/1 0 1"o <br /> Chemical Oxygen Demand mg/I 5.9 0.72 <br /> Chloride mg/I 26 28 <br /> Chromium,Hexavalent mg/1 0.0037 t':005 <br /> Gasoline Range Organics mg/l 0 00 ""Q 0 (n' <br /> Magnesium mg/I 32 30 <br /> Nitrate as N mg/I 12 18 <br /> Non-Volatile Organic Carbon mg/1 43 13 <br /> Oil and Grease mg/1 1 q„ <br /> Potassiummg/1 5.6 <br /> 4.8 <br /> Sodium mg/I 36 31 <br /> Strontium mg/1 0.710 <br /> 0.670 <br /> Sulfate mg/I 50 36 <br /> Total Dissolved Solids mg/I 500 450 <br /> Volatile Organic Compounds: None Detected <br /> Notes: <br /> Concentration Limits submitted by Herst Associates,Inc. <br /> °C=degrees Celsius <br /> mg/1=milligrams per liter <br /> NTU=nephelometric turbidity units <br /> NC=Not calculated <br /> µmhos/cm=micromhos per centimeter <br /> Indicates that the analyte was not detected above laboratory practical quantitation limit. <br /> Value listed is laboratory detection limit or estimated trace(BOLDED)concentration. <br /> Geologic Associates <br />