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TestAmedca <br /> THE LEADER IN ENVIRONMENTAL TESTING 17461 Dedan Avenue.Suite 100, Irvine,CA 92614(949)261-1022 Fox7(949)260-3297 <br /> Conestoga-Rovers&Associates-Emeryville Shell Project ID: 3515 Navy Dr.,Stockton,CA <br /> 5900 Hollis Sl.,Suite A Sampled: 03/29/11-03/30/11 <br /> Emeryville,CA 94608 ReportNumber: TUC3240 - Received: 03/31/11 <br /> Attention: Aubrey Cool <br /> r� ' METHOD BLANK/QC DATA <br /> VOLATILE ORGANICS by GUMS(EPA 503011/826013) <br /> Reporting Spike Source o/REC RPD Data <br /> Analyte Result Limit Units Level Result %REC Limits RPI) Limit Qualifiers <br /> Batch:11D0429 Extracted:04/05/11 <br /> Blank Analyzed:04/05/2011(11D0429-BLKI) <br /> Benzene ND 0.050 mg/kg <br /> Ethylbenzene ND 0,050 mg/kg <br /> Toluene ND 0.050 mg/kg <br /> m,p-Xylenes ND 0.10 mg/kg <br /> o-Xylene ND 0.050 mg/kg <br /> Xylenes,Total. ND 0.10 mg/kg <br /> Di-isopropyl Ether(DIPE) ND 0.10 mg/kg <br /> Ethyl tert-Butyl Ether(ETBE) ND 0.10 mg/kg <br /> Methyl-tert-butyl Ether(MTBE) ND 0.10 mg/kg <br /> tert-Amyl Methyl Ether(TAME) ND 0.10 mg/kg <br /> tert-Butanol(TBA) ND 1.0 mg/kg <br /> Surrogate:4-Bromofluorobenzene 2.40 mg/kg 2.50 96 65-140 <br /> Surrogate:DibromoJluoromethane 2.37 mg/kg 2.50 95 55-140 <br /> Surrogate:Toluene-d8 2.41 mg/kg 2.50 96 60-140 <br /> LCS Analyzed:04/06/2011(11D0429-BS1) MNR <br /> Benzene 2.26 0.050 mg/kg 2.50 91 65-120 <br /> Ethylbenzene 2.68 0.050 mg/kg 2.50 107 80-120 <br /> Toluene 2.64 0.050 mg/kg 2.50 106 80-120 <br /> m,p-Xylenes 5.62 0.10 mgfkg 5.00 112 70-125 <br /> o-Xylene 2.72 0.050 mg/kg 2.50 109 70-125 <br /> Xylenes,Total 8.34 0,10 mg/kg 7.50 111 70-125 <br /> Di-isopropyl Ether(DIPE) 2.28 0.10 mg/kg 2.50 91 60-140 <br /> Ethyl tert-Butyl Ether(ETBE) 2.36 0.10 mg/kg 2.50 95 60-140 <br /> Methyl-tert-butyl Ether(MTBE) 2.21 0.10 mg/kg 2.50 89 55-145 <br /> tert-Amyl Methyl Ether(TAME) 2.69 0.10 mg/kg 2.50 108 60-145 <br /> tert-Butanol(TBA) 11.8 1.0 mg/kg 12.5 94 65-140 <br /> Surrogate:4-Bromofluorobenzene 2.24 mg/kg 2.50 90 65-140 <br /> Surrogate:Dibromofluoromethane 2.06 mg/kg 1.S0 82 55-140 <br /> Surrogate:Toluene-d8 2.30 mg/kg 2.50 92 60-140 <br /> TestAmerica Irvine <br /> Lena Davidkova For Philip Sanelle <br /> Project Manager <br /> The results pertain only to the samples rested in the laboratory. This report shall not be reproduced, IUC3240 <Pa e l6 0f 23> <br /> except in full,without written permission from TestAmerica. br <br />