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TestAmerlca <br /> THE LEADER IN ENVIRONMENTAL TESTING 17461 Dorian Avenue.Suite 100, Irvine,CA 92614(949)261-1022 Fes(949)260-3291 <br /> Conestoga-Rovers&Associates-Emeryville Shell Project ID: 3515 Nary Dr.,Stockton,CA Sampled: 04/06/11-04/07/11 <br /> 5900 Hollis St,Suite A Received: 04/08/1 I <br /> Emeryville,CA 94608 ReportNumber: IUD0863 <br /> Attention: Aubrey Cool <br /> METHOD BLANK/QC DATA <br /> VOLATILE ORGANICS by GUMS(EPA 5030B/8260B) <br /> Reporting Spike Source %REC RPD Data <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Qualifiers <br /> Batch:11D1531 Extracted:04/13/11 <br /> Matrix Spike Analyzed:04/13/2011(I1D1531-MSI) Source:IUD0863-01 <br /> Benzene 0.0529 0.0010 mg/kg 0.0498 0.00315 100 65-130 <br /> Ethylbenzene 0.0540 0.0010 mg/kg 0.0498 0.00161 105 70-135 <br /> Toluene 0.0504 0.0010 mg/kg 0.0498 ND 101 70-130 <br /> m,p-Xylenes 0.103 0.0020 mg/kg 0.0996 ND 103 70-130 <br /> o-Xylene 0.0531 0.0010 mg/kg 0.0498 ND 107 65-130 <br /> Xylenes,Total 0.156 0.0020 mg/kg 0.149 ND 104 70-125 <br /> Di-isopropyl Ether(DIPE) 0.0522 0.0020 mg/kg 0.0498 ND 105 60-150 <br /> Ethyl tert-Butyl Ether(ETBE) 0.0649 0.0020 mg/kg 0.0498 ND 130 60-145 <br /> Methyl-tert-butyl Ether(MTBE) 0.0552 0.0020 mgtkg 0.0498 ND 111 55-155 <br /> tert-Amyl Methyl Ether(TAME) 0.0719 0.0020 mg/kg 0.0498 ND 144 60-150 <br /> tert-Butanol(TBA) 0.252 0.020 mg/kg 0.249 ND 101 65-145 <br /> Surrogate:4-BromoJluorobenzene 0.0494 mg/kg 0.0498 99 80-120 <br /> Surrogate:Dibromofluoromethane 0.0531 mg/kg 0.0498 107 80-125 <br /> Surrogate:Toluene-d8 - 0.0520 mg/kg 0.0498 104 80-120 <br /> Matrix Spike Dup Analyzed:04/13/2011(11D1531-MSDI) Source:IUD0863-01 <br /> Benzene 0.0537 0.0010 mg/kg 0.0502 0.00315 101 65-130 1 20 <br /> Ethylbenzene 0.0540 0.0010 mg/kg 0.0502 0.00161 104 70-135 0.09 25 <br /> Toluene 0.0507 0.0010 mg/kg 0.0502 ND 101 70-130 0.6 20 <br /> m,p,Xylenes 0.104 0.0020 mg/kg 0.100 ND 103 70-130 0.8 25 <br /> o-Xylene 0.0529 0.0010 mg/kg 0.0502 ND 105 65-130 0.4 25 <br /> Xylenes,Total 0.157 0.0020 mg/kg 0.151 ND 104 70-125 0.4 25 <br /> Di-isopropyl Ether(DIPE) 0.0522 0.0020 mg/kg 0.0502 ND 104 60-150 0.03 25 <br /> Ethyl tert-Butyl Ether(ETBE) 0.0644 0.0020 mg/kg 0.0502 ND 128 60-145 0.8 30 <br /> Methyl-tert-butyl Ether(MTBE) 0.0542 0.0020 mg/kg 0.0502 ND 108 55-155 2 35 <br /> tert-Amyl Methyl Ether(TAME) 0.0707 0.0020 mg/kg 0,0502 ND 141 60-150 2 25 <br /> tert-Butanol(TBA) 0.254 0.020 mg/kg 0.251 ND 101 65-145 0.6 30 <br /> Surrogate:4-BromoJluorobenzene 0.0494 mg/kg 0.0502 98 80-120 <br /> Surrogate:Dibrom0luoromethane 0.0528 mg/kg 0.0502 105 80-125 <br /> Surrogate:.Toluene-d8 0.0526 mg/kg 0.0502 105 80-120 <br /> TestAnnerica Irvine <br /> Philip Sanelle <br /> Project Manager <br /> The results pertain only to the samples rested In the laboratory. This reportshall not be reproduced, jUD0863 <Pgge Z$0,(37> <br /> except in full,without written permission from TestAmerka. <br />