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SURFACE WATER SAMPLING RESULTS AND COMPLIANCE SUMMARY <br /> SECOND QUARTER 2007 <br /> FORWARD UNIT <br /> SAN JOAQUIN COUNTY, CALIFORNIA <br /> FSW-1 FSW-2 <br /> Analyte Units 5/8/07 5/8/07 <br /> Field Parameters <br /> H Units 7.03 7.21 <br /> S ecific Conductance µmhos/cm 730 870 <br /> Temperature °C 24.6 22.8 <br /> Turbidity_ NTUs 0 0 <br /> Monitoring Parameters <br /> Arsenic mg/l 0.0042 0.0032 <br /> Barium mg/l 0.120 0.110 <br /> Bicarbonate mg/l 150 140 <br /> Calcium mg/l 40 33 <br /> Carbonate mg/1 36 21 <br /> Chloride mg/I 23 17 <br /> Chromium,Hexavalent mg/I 0.0025 O, 01 <br /> Gasoline Range Organics mg/1 0 009"3; €}OtI93 <br /> Magnesium mg/1 20 17 <br /> Nitrate as N mg/l 7.1 5.1 <br /> Potassium mg/l 3.9 3.1 <br /> Sodium mg/1 27 22 <br /> Strontium mg/1 0.450 0.370 <br /> Sulfate mg/1 251 19 <br /> Total Dissolved Solids I mg/1 320 270 <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 /> f77777-.''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 />