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TestAmedca <br /> THE LEADER IN ENVIRONMENTAL TESTING 19461 Darien 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: 03/29/11-03/30/11 <br /> Emeryville,CA 94608 Report Number: IUC3240 Received: 03/31/11 <br /> Attention: Aubrey Cool <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:11D0429 Extracted:04/05/11 <br /> LCS Dup Analyzed:04/06/2011(11D0429-BSD1) <br /> Benzene 2.43 0.050 mg/kg 2.50 97 65-120 7 20 <br /> Ethylbenzene 2.64 0.050 mg/kg 2.50 105 80-120 2 20 <br /> Toluene 2.89 0.050 mg/kg 2.50 115 80-120 9 20 <br /> m,p-Xylenes 5.46 0.10 mg/kg 5.00 109 70-125 3 20 <br /> o-Xylene 2.62 0.050 mg/kg 2.50 105 70-125 4 20 <br /> Xylenes,Total 8.08 0.10 mg/kg 7.50 108 70-125 3 20 <br /> Di-isopropyl Ether(DIPE) 2.28 0.10 mg/kg 2.50 91 60-140 0.3 20 <br /> Ethyl tert-Butyl Ether(ETBE) 2.40 0.10 mg/kg 2.50 96 60-140 2 20 <br /> Methyl-tert-butyl Ether(MTBE) 2.26 0.10 mg/kg 2.50 90 55-145 2 25 <br /> tert-Amyl Methyl Ether(TAME) 2.49 0.10 mg/kg 2.50 100 60-145 8 25 <br /> tert-Butanol(TBA) 10.9 1.0 mg/kg 12.5 87 65-140 8 20 <br /> Surrogate:4-Bromofluorobemene 1.15 mg/kg 2.50 90 65-140 <br /> Surrogate:Dibromofluoromethane 1.08 mg/kg 2.50 83 55-140 <br /> Surrogate:Toluene-d8 1.52 mg/kg 1.50 101 60-140 <br /> Batch:11 D0443 Extracted:04/05/11 <br /> Blank Analyzed:04/05/2011(11D0443-BLKI) <br /> Benzene ND 0.0010 mg/kg <br /> Ethylbenzene ND 0.0010 mg/kg <br /> Toluene ND 0.0010 mg/kg <br /> m,p-Xylenes ND 0.0020 mg/kg <br /> o-Xylene . ND 0.0010 mg/kg <br /> Xylenes,Total ND 0.0020 mg/kg <br /> Di-isopropyl Ether(RIPE) ND 0.0020 mg/kg <br /> Ethyl tert-Butyl Ether(ETBE) ND 0.0020 mgfkg <br /> Methyl-tert-butyl Ether(MTBE) ND 0.0020 mg/kg <br /> tart-Amyl Methyl Ether(TAME) ND 0.0020 mgfkg <br /> tert-Butanol(TBA) ND 0.020 mg/kg <br /> Surrogate:4-Bromofluorobemene 0.0481 mg/kg 0.0500 96 80-110 <br /> Surrogate:Dibromofluoromethane 0.0524 mg/kg 0.0500 105 80-125 <br /> Surrogate.'Toluene-d8 0.0509 mg/kg 0.0500 102 80-120 <br /> TestAmePica Irvine <br /> Lena Davidkova For Philip Sanelle <br /> Project Manager <br /> The resubs pertain only to the samples tested In the laboratory. This report shall not be reproduced, <br /> except Infull,without written permissionfmm TesMenerim. IUC3240 <Page 17 of'23> <br />