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TestAmerica <br /> THE LEADER IN ENVIRONMENTAL TESTING 17461 Derian Avenue.Suite 100, Irvine,CA 92614(949)261-1022 Fm:(949)260.3297 <br /> Conestoga-Rovers&Associates-Emeryville Shell Project ID: 3515 Navy Dr.,Stockton,CA <br /> 5900 Hollis St,Suite A Sampled: 03/29/11-03/30/11 <br /> Emeryville,CA 94608 Report Number: IUC3240 Received: 03/31/11 <br /> Attention: Aubrey Cool <br /> r _.. <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 %aREC Limits RPD Limit Qualifiers <br /> Batch:11D0617 Extracted:04/06/11 <br /> LCS Analyzed:04/06/2011(11D0617-BSI) <br /> Benzene 0.0504 0.0010 mg/kg 0.0500 101 65-120 <br /> Ethylbenzene 0.0515 0.0010 mg/kg 0.0500 103 70-125 <br /> Toluene 0.0511 0.0010 mg/kg 0.0500 102 70-125 <br /> m,p-Xylenes 0.0993 0.0020 mg/kg 0.100 99 70-125 <br /> o-Xylene 0.0513 0.0010 mg/kg 0.0500 103 70-125 <br /> Xylenes,Total - 0.151 0.0020 mgfkg 0.150 100 70-125 <br /> Di-isopropyl Ether(DIPE) 0.0531 0.0020 mg/kg 0.0500 106 60-140 <br /> Ethyl tert-Butyl Ether(ETBE) 0.0664 0.0020 mg/kg 0.0500 133 60-140 <br /> Methyl-ten-butyl Ether(MTBE) 0.0565 0.0020 mg/kg 0,0500 113 60-140 <br /> tert-Amyl Methyl Ether(TAME) 0,0734 0.0020 mg/kg 0.0500 147 60-145 C <br /> tert-Butanol(TBA) 0.242 0.020 mg/kg 0.250 97 70-135 <br /> Surrogate:4-Bromofluorobenzene 0.0490 mg/kg o.OSoo 98 80-120 <br /> Surrogate:Dibromofluoromethane 0.0520 mg/kg 0.0500 104 80-125 <br /> Surrogate:Toluene-d8 0.0506 mg/kg 0.0500 101 80-120 <br /> Matrix Spike Analyzed:04/062011(1ID0617-MSI) Source:TUC3240-09 <br /> Benzene 0.0506 0.0010 mg/kg 0.0500 ND 101 65-130 <br /> Ethylbenzene 0.0502 0.0010 mg/kg Q0500 ND 100 70-135 <br /> Toluene 0.0518 0.0010 mglkg 0.0500 ND 104 70-130 <br /> m,p-Xylenes 0.0976 0.0020 mgtkg 0.100 ND 98 70-130 <br /> o-Xylene 0.0498 0.0010 mg/kg 0,0500 ND 100 65-130 <br /> Xylenes,Total 0.147 0.0020 mg/kg 0.150 ND 98 70-125 <br /> Di-isopropyl Ether(DIPE) 0.0534 0.0020 mg/kg 0.0500 ND 107 60-150 <br /> Ethyl tert-Butyl Ether(ETBE) 0.0669 0.0020 mg/kg 0,0500 ND 134 60-145 <br /> Methyl-tert-butyl Ether(MTBE) 0.0586 0.0020 mg/kg 0.0500 0.00130 115 55-155 <br /> tert-Amyl Methyl Ether(TAME) 0.0742 0.0020 mg/kg OA500 ND 148 60-150 M7 <br /> tert-Butanol(TBA) 0.246 0.020 mglkg 0.250 ND 98 65-145 <br /> Surrogate:4-Bromofluorobenzene 0.0482 mg/kg 0.0500 96 80-120 <br /> Surrogate:Dibromofluoromethane 0.0528 mg/kg 0.0500 106 80-125 <br /> Surrogate;Toluene-d8 0.0508 mg/kg 0.0500 102 80-120 <br /> TestAmerica Irvine <br /> Lena Davidkova For Philip Sanelle <br /> Project Manager <br /> The results pertain only to the samples tested in the laboratory. This reperl shall not be reproduced, /UC3240 c <br /> except in full,without written permission from TestAmerica. Page 20 of 23> <br />