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QC Sample Results <br /> Client: Conestoga-Rovers&Assoc. (Emeryville)/SHELL TestAmerica Job ID: NVL1479 <br /> Project/Site: SAP 135703 <br /> Method: SW846 82608 -Volatile Organic Compounds by EPA Method 8260B (Continued) <br /> r <br /> Lab Sample ID: 111-2635-MSD1 Client Sample ID:Matrix Spike Duplicate <br /> Matrix: Water Prep Type:Total <br /> Analysis Batch: U022397 Prep Batch: 111-2635 P <br /> Sample Sample Spike Natrix Spike Dup Matrix Spike Dul %Rec. RPD <br /> Analyte Result Qualifier Added Result Qualifier Unit D %Rec Limits RPD Limit <br /> Benzene 2540 5000 7770 ug/L 105 75-133 2 17 <br /> Ethylbenzene 2190 5000 7400 ug/L 104 79.139 3 15 I <br /> Toluene 3120 5000 6160 ug/L 101 75.136 3 15 <br /> Xylenes,total 8160 15000 22300 ug/L 94 74-141 2 15 <br /> Methyl tert-Butyl Ether No 5000 5480 ug/L 110 66.141 4 16 <br /> Tertiary Butyl Alcohol ND 50000 33400 ug/L 57 50.183 3 32 <br /> Diisopropyl Ether ND 5000 5350 ug/L 107 54-147 3 19 <br /> Ethyl tert-Butyl Ether ND 5000 5980 ug/L 120 60-138 3 19 <br /> Tert-Amyl Methyl Ether ND 5000 5880 ug/L 118 61.138 5 15 <br /> Matrix Spike cup Matrix Spike cup <br /> Surrogate %Recovery Qualifier Limits <br /> 1,2-Dichloroethane-d4 113 70-130 <br /> Dibromoliuoromethane 98 70-130 <br /> Toluene-d8 99 70-130 <br /> 4-Bromorluorobenzene 105 76-130 <br /> Lab Sample ID: 111-2916-BLK1 Client Sample ID:Method Blank <br /> Matrix: Water <br /> Prep Type:Total <br /> Analysis Batch: U022404 Prep Batch: 11L2916 P <br /> Blank Blank <br /> Analyte Result Qualifier RL MDL Unit D Prepared Analyzed oil Fac <br /> Benzene ND 0.500 ug/L 12/12/1109:23 12/21/1113:43 1.00 <br /> Ethylbenzene ND 0.500 ug/L 12/12/1109:23 12/21/1113:43 1.00 <br /> Toluene ND 0.500 ug/L 12/12/1109:23 12/21/1113:43 1.00 <br /> Xylenes,total ND 0.500 ug/L 12/12/11 09:23 12/21/11 13:43 1.00 <br /> Blank Blank <br /> Surrogate %Recovery Qualifier Limits Prepared Analyzed My Fac <br /> 1,2-Dich/o/oethane44 101 70-130 1-211211109 23 12x11/11 13:43 1.00 <br /> Dibromofluoromethane 103 70-130 12/12/1109:23 12/21/1113:43 1.00 <br /> Toluene-d8 101 70-130 12/12/1109:23 12/21/11 13:43 1.00 <br /> 4-Bromo/luorobenzene 99 70-130 12/12/1109:23 1221/1113:43 1.00 <br /> Lab Sample ID: 11L2916-BS1 Client Sample ID: Lab Control Sample <br /> Matrix: Water Prep Type:Total <br /> Analysis Batch: 0022404 Prep Batch: 11 L2916 P <br /> Spike LCS LCS %Rec. <br /> Analyte Added Result Qualifier Unit D %Rec Limits <br /> Benzene 50.0 49.3 ug/L 99 80-121 <br /> Ethylbenzene 50.0 49.9 ug/L 100 80-130 <br /> Toluene 50.0 49.1 ug/L 98 80-126 <br /> Xylenes,total 150 145 ug/L 97 80-132 <br /> LCS LCS <br /> Surrogate %Recovery Qualifier Limits <br /> 1,2-Dichloroethane-d4 110 70-130 <br /> Dibromolluoromethane 98 70-130 <br /> Toluene-d8 100 70-130 <br /> 4-Bromofluorobenzene 105 70-130 <br /> TestAmerica Nashville <br /> Page 26 of 48 12/22/2011 <br />