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TestAmerica <br /> THE LEADER IN ENVIRONMENTAL TESTING 17461 Dena.Avenue.suite 100, Irvine,CA 92614(949)261-1022 Fax:(949)260-3297 <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 BLANI QQC DATA <br /> VOLATILE ORGANICS by GUMS(EPA 503011/826011) <br /> Reporting Spike Source %REC RPD Data <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Qualifiers <br /> Batch: 11D1882 Extracted:04/15/11 <br /> Blank Analyzed:04/18/2011(11D1882-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 Cert-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-Bromofluorobemene 2.66 mg/kg 2.50 107 65-140 <br /> Surrogate:Dibromofluoromethane 2.57 mg/kg 2.50 103 55-140 <br /> Surrogate:Toluene-d8 2.78 mg/kg 2.50 111 60-140 <br /> LCS Analyzed:04/18/2011(1ID1882-BS1) <br /> Benzene 2.52 0.050 mg/kg 2.50 101 65-120 <br /> Ethylbenzene 2.62 0.050 mg/kg 2.50 105 80-120 <br /> Toluene 2.51 0.050 mg/kg 2.50 100 80-120 <br /> m,p-Xylenes 5.29 0.10 mg/kg 5.00 106 70-125 <br /> o-Xylene 2.66 0,050 mg/kg 2.50 106 70-125 <br /> Xylenes,Total 7.96 0.10 mg/kg 7.50 106 70-125 <br /> Di-isopropyl Ether(DIPE). 2.86 0.10 mg/kg 2.50 114 60-140 <br /> Ethyl tert-Butyl Ether(ETBE) 2.86 0.10 mg/kg 2.50 114 60-140 <br /> Methyl-tert-butyl Ether(MTBE) 2.48 0.10 mg/kg 2.50 99 55-145 <br /> tert-Amyl Methyl Ether(TAME) 2.66 0.10 mg/kg 2.50 106 60-145 <br /> tert-Butanol(TBA) 11.9 1.0 mgfkg 12.5 95 65-140 <br /> Surrogate:4-Bromofluorobemene 2.49 mg/kg 1.50 100 65-140 <br /> Surrogate:Dibromofluoromethane 2.40 mg/kg 2.50 96 55-140 <br /> Surrogate:Toluene-0 2.49 mg/kg 2.50 100 60-140 <br /> TestAmerica Irvine <br /> Philip Saneile <br /> Project Manager <br /> The results pertain only to the samples tested to the laboratory. This report shall not be reproduced, 7UD0863 a <br /> except mfill,wuh.u ...iuenpermis <Pajjaj7> <br /> fshmfmne TestAmerina. g <br />