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DETECTION MONITORING RESULTS AND COMPLIANCE SUMMARY <br /> SECOND QUARTER 2007 <br /> AUSTIN ROAD UNIT <br /> SAN JOAQUIN COUNTY,CALIFORNIA <br /> Background <br /> Well <br /> Concentration AMW-2 AMW-6 AMW-7 I AMW-12 AMW-13 AMW-14 <br /> Anal to Units I Limit 5/8/07 5/9/07 1 5/9/07 5/9/07 5/8/07 5/8/07 <br /> Field Parameters <br /> H Units 1 6.515-8.362 7.09 -74,)l 7 RrI 7.35 7.13 7.06 <br /> Specific Conductance j!mhos/cmj 1500 910 400 4401 586 7661 715 <br /> Temperature °C 1 21.54 20 19 19.21 18.4 19.2 18.8 <br /> Turbidity NTU 97 6 0 01 0 01 3 <br /> Monitoring Parameters <br /> Arsenic m /I 0.007567 0.00120.004 0.0031 0.0032 0.0014 0.0022 <br /> Barium m I 0.2462 0.15 0.140 0.180 0.170 0.250 0.220 <br /> Bicarbonate mg/1 510.6 340 170 200 290 380 290 <br /> Calcium m 149.4 77 36 42 57 76 70 <br /> Carbonate m i 12 12 5.7 3- 6.8 <br /> Chloride mg/1 96 38 39 42 34 46 54 <br /> Chromium Hexavalent rn /l 0.005059 0.0034 0.0046 0.0051 0.0014 0.0037 0.0025 <br /> Gas Ran'g -Organics m /I 0.025 Q:pp3.. ` .. (N3 _ X11093 (1(1p93 ( p093, .,. 0 U1 <br /> Ma nesium mg/1 68.96 38 17 20 26 40 35 <br /> Nitrate as N mg/1 76.8 21 2.7 6.0 7.1 12 9.9 <br /> Oil and Grease m /1 5 0 <br /> Potassiumm /1 11.08 7.6 5.8 7.4 3.4 5.9 5.0 <br /> Sodium m 1 1 79.9 51 23 26 41 43 42 <br /> Strontium m /I 1.38 1.000 0-3901-0 560 0.620 0.850 0.800 <br /> Sulfatem /1 151.8 72 26 26 46 59 57 <br /> Total Dissolved Solids m /I 1022 650 320 360 4001 620 580 <br /> Volatile Organic Compounds <br /> 1,1-Dichloroethane 1 0.5 0j1,0 � 1)11 ply O1 �_ l ' <br /> 1,2-Dichloro ro ane 1 0.5 0:X2 0 12; fl l2 (S 1 0`121 a pA <br /> Dichlorodifluoromethane /I 0.5 <br /> 0b5 0.66 <br /> Tetrachloroethene 1 0.5 O;a I Q.22 2.0 9.6 <br /> 04 t1 <br /> Trichloroethene /I 0.5 p, 01.3 p f3, 0 <br /> f139 1.1 <br /> Notes: <br /> Concentration Limits submitted by Heist Associates,Inc. <br /> =Only volatile organic compounds reported above detection limits shown <br /> "C=degrees Celsius <br /> mg/I=milligrams per liter <br /> NTU=nephelometric turbidity units <br /> NC=Not calculated <br /> mg/1=micrograms per liter <br /> pmhos/cm=microinhos per centimeter <br /> jIndicates that the analyte was not detected above laboratory practical quantitation limit. <br /> Value listed is laboratory detection limit or estimated trace(BOLDED)concentration. <br /> NA Not Analyzed <br /> GIA'7007-043ARL2Q07 Tables 1,11420M <br /> Geologic Associates <br />