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GROUNDWATER QUALITY ANALYTICAL RESULTS SUMMARY <br /> FIRST QUARTER 2007 <br /> FORWARD UNIT <br /> Background <br /> MW-16 MW-17 I MW-18 MW-19 MW-21 MW-22 MW-23R I DW-9690 <br /> Anal to Units 2/7/07 2/5/07 2/7/07 2/8/07 2/6/07 2/6/07 L 2/6/07 2/5/07 <br /> Field Parameters <br /> H Units 6.44 6.93 7.96 7.34 6.79 7.04 7.41 7.02 <br /> Specific Conductance mhos/cm 1400 9811 1000 576 796 860 11801 550 <br /> Temperature "C 18.2 19 17.9 17.7 18.5 17.1 17.6 18.1 <br /> TurbidityNTU 1 960 8 36 0 0 10 1 <br /> Monitoring Parameters <br /> Arsenic M&/1 0.0013 0.0039 0.0024 0.0038 0.0034 0.0041 0.0038 <br /> Barium mg/1 0.560 0.480 0.210 0.120 0.300 0.260 0.073 3 <br /> Bicarbonate mg/1 790 430 340 300 530 390 460 $ 3 <br /> Calcium m I 150 110 94 66 92 93 11014 <br /> Carbonate m I 41, 3 3 Or. r.,. .: ,_ <br /> Fr .: <br /> Chloride mg/1 35 63 87 33 24 34 37 <br /> Chromium,Hexavalent m I 0.0031 0 0013. 0.0037 <br /> 0 0021 0 0041 0.0052 1 dt <br /> Gasoline Ran a Organics mg/1 0,Ot165 „fi, <br /> Ma nesium mg/1 71 46 42 29 45 44 44 f4t „r <br /> Nitrate as N mg/1 18 141 9.1 6.0 0.36 16 29 N s <br /> Oil and Grease m t 3, <br /> 19 <br /> Potassium mg/1 8.4 8.0 7.7 6.2 6.5 6.3 4.5 ISA <br /> Sodium mg/1 64 46 41 37 45 48 86 <br /> Strontium m I 1.600 1.100 0.980 0.660 1.000 0.970 1.100 NA <br /> Sulfate m I 45 77 70 48 20 76 941A-" <br /> Total Dissolved Solids -.- 1 590 660 4901 480 5301 610 740 IsfA' <br /> Volatile Organic Com ounds <br /> 1,l-Dichloroethane /I 0.13` 0.13 0.13;; 0:33 0 1=� ,cis-l,l-Dichloroethene g/1 0'_79 019 0 19` 0J9,Dichlorodifluoromethane L 030 r 0 20. 0 20 fl0 0 2Tetraehloroethene 75 Trichloroethene ( U1$ 01 Trichlorofluoromethane /1 udu 0.20 0.205` ""0:20 =0 2d;20 61 <br /> Notes: <br /> °C=degrees Celsius <br /> mg/1=milligrams per liter <br /> NTU=nephelometric turbidity units <br /> µg/1=micrograms per liter <br /> µmhos/cm=micromhos per centimeter <br /> [77,777,771 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 /> Not Analyzed. <br /> • <br /> C-TORWARRIFLF np7 TabIP(xLIR1RIM <br /> Geologic Associates <br />