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TestAmerica <br /> i <br /> 17461 Derian Avenue.Suite 100, Irvine,CA 92614(949)261-1022 Fex:(949)260-3297 <br /> THE LEANER IN ENVIRONMENTAL TES7ING W <br /> Conestoga-Rovers&Associates-Emeryville Shell Project ID: 3515 Navy Dr.,Stockton,CA Sampled: 04/08/11 <br /> 5900 Hollis St.,Suite A Received: 04/12/11 <br /> Emeryville,CA 94608 ReportNumber: IUD 1020 <br /> Attention: Aubrey Cool ,-,,,,,,,, <br /> METHOD BLANK/QC DATA <br /> VOLATILE ORGANICS by GC/MS(EPA 5030B/8260B) <br /> Reporting Spike Source %REC RPD Data <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Qualifiers <br /> Batch:11D2102 Extracted:04/17/11 <br /> LCS Analyzed:04117/2011(11D2102-BSI) 0.0500 103 65-120 <br /> Benzene 0.0513 0.0010 mg/kg <br /> Ethylbenzene 0.0536 0.0010 mg/kg D.0500 107 70-125 <br /> 0.0531 0.0010 mg/kg 0.0500 106 70-125 <br /> Toluene <br /> m,p-Xylenes 0.105 0.0020 mg/kg 0.100 105 70-125 <br /> o-Xylene <br /> 0.0547 0.0010 mg/kg 0.0500 109 70-125 <br /> Xylenes,Total 0.159 0.0020 mp/kg 0.150 106 70-125 <br /> Di-isopropyl Ether(DIPE) 0.0552 0.0020 mg/kg 0.0500 110 60-140 <br /> 0.0691 0.0020 mg/kg 0.0500 138 60-140 <br /> Ethyl cert-Butyl Ether(ETBE) <br /> 0.0020 mg/kg 0.0500 117 60-140 <br /> Methyldert-butyl Ether(MTBE) 0.0586 <br /> cert-Amyl Methyl Ether(TAME) <br /> 0.0765 0.0020 mgtkg 0.0500 153 60-145 L <br /> tart-Butanol(TBA) 0.252 0.020 mp�kg 0.250 101 70-135 <br /> 0500 97 80-120 . <br /> Surrogate:4-BromoJluarobenzene 0.0485 mg/kg 0. 109 80-125 <br /> Surrogate:DibromoJluoromethane 0.0545 mg/kg 0.0500 <br /> Surrogate:Toluene-d8 0.0530 mg/kg 0.0500 106 80-120 <br /> Matrix Spike Analyzed:04/17/2011(11D2102-MS1) Source:IUD1363-14 <br /> Benzene 0,0474 0.00096 mg/kg 0.0479 ND 99 65-130 <br /> Ethylbenzene <br /> 0.0487 0.00096 mg/kg 0.0479 ND 102 70-135 <br /> Toluene 0.0483 0.00096 mg/kg 0.0479 ND 101 70-130 <br /> mXylenenes <br /> 00960 00019 mg/kg 0.0958 ND 100 70-130 <br /> o-Xylene 0.0494 0.00096 mg/kg 0.0479 ND 103 65-130 <br /> Xylenes,Total 0.145 0.0019 mg/kg 0.144 ND 101 70-125 <br /> Di-isopropyl Ether(DIPE) 0.0512 0.0019 mg/kg 0.0479 ND 107 60-150 <br /> Ethyl ten-Butyl Ether(ETBE) 0.0648 0.0019 mg/kg 0.0479 ND 135 60-145 <br /> Methyl-tert-butyl Ether(MTBE) 0.0570 0.0019 mg/kg 0.0479 ND 119 55-155 <br /> tart-Amyl Methyl Ether(TAME) <br /> 0.0731 0.0019 mgtkg 0.0479 ND 153 60-150 M7 <br /> tert-Butanol(TBA) 0.229 0.019 mg/kg 0.239 ND 96 65-145 <br /> Surrogate:4-Bromof(uorobenzene 0.0463 mg/kg 0.0479 <br /> 97 80-120 <br /> m 0.0479 106 80-125 <br /> Surrogate:Dibromofluoromethane 0.0509 � 105 80-120 <br /> Surrogate:Toluene-d8 0.0503 mg/kg 0.0479 <br /> TestAmerica Irvine <br /> Philip Sanelle <br /> Project Manager <br /> The resultsperfain only to the samples tasted In the laboratory. This report shall nor be reproduced, I UD1020 <Page 12 Of 15> <br /> except!n full,without written permission from TestAmerica. <br />