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TestAmerica <br /> 17461 Derieu Avenue.Suite 100, Irvine,CA 92614(949)261-1022 F.:(949)260-329749)260-3297 <br /> THE LEADER IN ENVIRONMENTAL TESTING <br /> Conestoga-Rovers&Associates-Emeryville Shell Project ID: 3515 Navy Dr.,Stockton,CA <br /> 5900 Hollis St.,Suite A Sampled: 04/06/11-04/07/11 <br /> Emeryville,CA 94608 Report Number: IUD0863 Received: 04/08/11 <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:11D1875 Extracted:04/15/11 <br /> Matrix Spike Analyzed:04/15/2011(11D1875-MSI) Source:IUD0959-02 <br /> Benzene 0.0503 0.0010 mg/kg 0.0499 ND 101 65-130 <br /> Ethylbenzene 0.0530 0,0010 mg/kg 0.0499 ND 106 70-135 <br /> Toluene 0.0528 0.0010 mg/kg 0.0499 ND 106 70-130 <br /> m,p-Xylenes 0.104 0.0020 mg/kg 0.0998 ND 104 70-130 <br /> o-Xylene 0.0518 0.0010 mg/kg 0.0499 ND 104 65-130 <br /> Xylenes,Total 0.155 0.0020 mg/kg 0.150 ND 104 70-125 <br /> Di-isopropyl Ether(DIPE) 0.0632 0.0020 mg/kg 0.0499 ND 127 60-150 <br /> Ethyl tert-Butyl Ether(ETBE) 0.0543 0.0020 mg/kg 0.0499 ND 109 60-145 <br /> Methyl-cert-butyl Ether(MTBE) 0.0522 0.0020 mg/kg 0.0499 ND 105 55-155 <br /> tert-Amyl Methyl Ether(TAME) 0.0508 0.0020 mg/kg 0.0499 ND 102 60-150 <br /> tert-Butanol(TBA) 0.267 0.020 mg/kg 0.250 ND 107 65-145 <br /> Surrogate:4-Bromofluorobemene 0.0504 mg/kg 0.0499 101 80-120 <br /> Surrogate:DibromoJluoromethmre 0.0531 mg/kg 0.0499 107 80-125 <br /> Surrogate:Toluene-d8 0.0519 mg/kg 0.0499 104 80-120 <br /> Matrix Spike Dup Analyzed:04/15/2011(11D1875-MSDI) Source:IUD0959-02 <br /> Benzene 0.0502 0.00099 mg/kg 0.0497 ND 101 65-130 0.2 20 <br /> Ethylbenzene 0.0534 0.00099 mg/kg 0.0497 ND 107 70-135 0.7 25 <br /> Toluene 0.0520 0.00099 mg/kg 0.0497 ND 105 70-130 1 20 <br /> m,p-Xylenes 0.105 0.0020 mg/kg 0.0994 ND 105 70-130 1 25 <br /> o-Xylene 0.0521 0.00099 mg/kg 0.0497 ND 105 65-130 0.8 25 <br /> Xylenes,Total 0.157 0.0020 mg/kg 0.149 ND 105 70-125 0.9 25 <br /> Di-isopropyl Ether(RIPE) 0.0627 0.0020 mg/kg 0.0497 ND 126 60-150 0.7 25 <br /> Ethyl tert-Butyl Ether(ETBE) 0.0547 0.0020 mg/kg 0.0497 ND 110 60-145 0.8 30 <br /> Methyl-tert-butyl Ether(MTBE) 0.0514 0.0020 mg/kg 0.0497 ND 103 55-155 2 35 <br /> tert-Amyl Methyl Ether(TAME) 0.0505 0.0020 mg/kg 0.0497 ND 102 60-150 0.7 25 <br /> ten-Butanol(TBA) 0.267 0.020 mg/kg 0.249 ND 107 65-145 0.1 30 <br /> Surrogate:4-Bromofluarobemene 0.0505 mg/kg 0,0497 102 80-120 <br /> Surrogate:DibromoJluoromethme 0.0528 mg/kg 0.0497 106 80-125 <br /> Surrogate:Toluene-d8 0.0515 mg/kg 0.0497 104 80-120 <br /> TestAmerica Irvine <br /> Philip Sanelle <br /> Project Manager <br /> The resu/trperlaln only to the samples felted In the laboratory. This report shall not be reproduced /UD0863 <Page 32 0,f 37> <br /> except to full,without written permissionfrom TestAmerica. - <br />