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DOMESTIC WELL MONITORING RESULTS <br /> SECOND QUARTER 2007 <br /> AUSTIN ROAD UNIT . <br /> SAN JOAQUIN COUNTY,CALIFORNIA <br /> 7898-A 8106-A <br /> Anat to Units 5/7/07 5/7/07 <br /> Field Parameters <br /> H Units 7.60 7.63 <br /> Specific Conductance µmhos/cm 693 651 <br /> Temperature 1C 18.5 18.4 <br /> Turbidity NTU 1 0 <br /> Monitoring Parameters <br /> Arsenic mg/1 ` <br /> Barium mg/1 0.230 0.270 <br /> Bicarbonate m 330 320 <br /> Calcium m 71 66 <br /> Carbonate m /I 5.7 8.0 <br /> Chloride m I 51 45 <br /> Chromium(Hexavalent) ML/1 „ M4 00 0.0025 <br /> Gasoline Range Organics mg/1 <br /> Magnesium mg/1 38 36 <br /> Nitrate as N m /l 8.2 6.9 <br /> Oil and Grease m /I 1.9 <br /> Potassium mg/1 6.9 6.9 <br /> Sodium mg/1 34 31 <br /> Strontium -mg/1 0.770 0.740 <br /> Sulfate m /I 53 47 <br /> Total Dissolved Solids mg/1 5401 500 <br /> Volatile Organic Compounds <br /> I,I-Dichloroethane µ I x;11 Q;4 _ <br /> Bromoform µ /10. o, 0.64 <br /> Chloromethane g/1 p, il x:072 <br /> cis-1,2-Dichloroethene µ 1 0.52 <br /> Dibromochloromethane g/1 0): 0.54 <br /> Dichlorodifluoromethane 1.1 2_g <br /> Tetrachloroethene 1 2.1 5.5 <br /> Trichloroethene 0.791 3.0 <br /> Notes: <br /> 1=Only volatile organic compounds reported above detection limits shown <br /> 'C=degrees Celsius <br /> mg/1=milligrams per liter <br /> NTU=nephelometric turbidity units <br /> mg/1=micrograms per liter <br /> µmhos/cm=micromhos per centimeter <br /> EjIndicates that the analyte was not detected above laboratory practical quantitation limit. <br /> Value listed is laboratory detection limit or estimated trace(BOLDED)concentration. <br /> GLA/2007-043iARL 2Q07 Tables.zIsi124/2008 <br /> GeoLogic Associates <br />