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TestAmerica <br /> THE LEADER IN ENVIRONMENTAL TESTING 17461 Dorian Avenue.Suite 100, Irvin%CA 92614(949)261-1022 Pax:(949)260-3297 <br /> Conestoga-Rovers&Associates-Emeryville Shell Project ID: 3515 Navy Dr,Stockton,CA <br /> 5900 Hollis St.,Suite A - Sampled: 03/30/11-03/31/11 <br /> Attention: Aubrey Co <br /> Emeryville, ey Cool ReportNumber: IUD0117 Received: 04/02/11 <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:IID0587 Extracted:04/06/11 <br /> LCS Analyzed:04/06/2011(11D0587-BSI) <br /> Benzene 0.0516 0.0010 mg/kg 0.0500 103 65-120 <br /> Ethylbenzene 0.0527 0.0010 mg/kg 0.0500 105 70-125 <br /> Toluene 0.0526 0.0010 mg/kg 0.0500 105 70-125 <br /> m,p-Xylenes 0.102 0.0020 mg/kg 0.100 102 70-125 <br /> o-Xylene 0.0521 0.0010 mg/kg 0.0500 104 70-125 <br /> Xylenes,Total 0.154 0.0020 mg/kg 0.150 103 70-125 <br /> Di-isopropyl Ether(DIPE) 0,0518 0.0020 mg/kg 0.0500 104 60-140 <br /> Ethyl tert-Butyl Ether(ETBE) 0.0653 0.0020 mg/kg 0.0500 131 60-140 <br /> Methyl-tert-butyl Ether(MTBE) 0.0545 0.0020 mg/kg 0.0500 109 60-140 <br /> tert-Amyl Methyl Ether(TAME) 0.0706 0.0020 mg/kg 0.0500 141 60-145 <br /> tert-Butanol(TBA) 0.245 0.020 mg/kg 0.250 98 70-135 <br /> Surrogate:4-Bromofluorobemene 0.0487 mg/kg 0.0500 97 88-120 <br /> Surrogate:Dibromafluoromethane 0.0502 mg/kg 0,0500 100 80-125 <br /> Surrogate:Toluene-d8 0.0512 mg/kg 0.0500 102 80-120 <br /> Matrix Spike Analyzed:04/06/2011(11D0587-MSI) Source:IUC3281-04 <br /> Benzene 0.0511 0.00099 mg/kg 0.0496 ND 103 65-130 <br /> Ethylbenzene 0.0521 0.00099 mg/kg 0.0496 ND 105 70-135 <br /> Toluene 0.0527 0.00099 mg/kg 0.0496 ND 106 70-130 <br /> m,p-Xylenes 0.101 O0020 mg/kg 0.0992 ND 102 70-130 <br /> o-Xylene 0.0525 0.00099 mg/kg 0.0496 ND 106 65-130 <br /> Xylenes,Total 0.153 0.0020 mg/kg 0,149 ND 103 70-125 <br /> Di-isopropyl Ether(DIPE) 0.0544 0.0020 mg/kg 0.0496 ND 110 60-150 <br /> Ethyl tert-Butyl Ether(ETBE) 0.0696 0.0020 mg/kg 0.0496 ND 140 60-145 <br /> Methyl-tert-butyl Ether(MTBE) 0.0595 0.0020 mg/kg 0.0496 ND 120 55-155 <br /> tort-Amyl Methyl Ether(TAME) - 0.0767 0.0020 mg/kg 0.0496 ND 155 60-150 M7 <br /> tert-Butanol(TBA) 0.250 0,020 mg/kg 0.248 ND 101 65-145 <br /> Surrogate:4-Bromofluorobemene 0.0487 mg/kg 0.0496 98 80-120 <br /> Surrogate:Dibromofluoromethane 0.0477 mg/kg 0.0496 96 80-125 <br /> Surrogate:Toluene-d8 0.0509 mg/kg 0,0496 103 80-120 <br /> TestAmerica Irvine <br /> Pat Abe For Philip Sanelle <br /> Project Manager <br /> The resulfs perfain only to the samples tested in the laboratory. This report shall not be reproduced, <br /> exrepfinfull,wilhouiwrittenpermisrfonfmm TestAmerica. 1UD0117 <Page 19 of 23> <br />