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TestAmerica <br /> THE LEADER IN ENVIRONMENTAL TESTING 17461 Derien Avenue.Suite 100, Irvine,CA 92614(949)2614022 Fex:(949)260-7297 <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: IM0863 Received: 04/08/11 <br /> Attention: Aubrey Cool <br /> METHOD BLANK/QC DATA <br /> VOLATILE ORGANICS by GUMS(EPA 5030B/8260B) <br /> Reporting Spike Source %REC RPD Data <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Qualifiers <br /> Batch: 11D1513 Extracted:04/13/11 <br /> LCS Dup Analyzed:04/13/2011(I1D1513-BSD1) <br /> Benzene 2.69 0.050 mg/kg 2.50 108 65-120 1 20 <br /> Ethylbenzene 2.71 0.050 mg/kg 2.50 108 80-120 3 20 <br /> Toluene 2.56 0.050 mg/kg 2.50 103 80-120 3 20 <br /> m,p-Xylenes 5.29 0.10 mg/kg 5.00 106 70-125 2 20 <br /> o-Xylene 2.65 0.050 mg/kg 2.50 106 70-125 2 20 <br /> Xylenes,Total 7.94 0.10 mg/kg 7.50 106 70-125 2 20 <br /> DWsopropyl Ether(DIPS) 2.48 0.10 mg/kg 2.50 99 60-140 6 20 <br /> Ethyl tert-Butyl Ether(ETBE) 2.49 0.10 mg/kg 2.50 100 60-140 4 20 <br /> Methyl-tert-butyl Ether(MTBE) 2.14 0.10 mg/kg 2.50 86 55-145 4 25 <br /> tert-Amyl Methyl Ether(TAME) 2.56 0.10 mg/kg 2.50 102 60-145 5 25 <br /> tort-Butanol(TBA) 9.97 1.0 mg/kg 12.5 80 65-140 4 20 <br /> Surrogate:4-Bromofluorobemene 2.35 mg/kg 2.50 94 65-140 <br /> Surrogate:Dibromofluoromethane 2.40 mg/kg 2.50 96 55-140 <br /> Surrogate:Toluene-08 2.55 mg/kg 2.50 102 60-140 <br /> Matrix Spike Analyzed:04/15/2011(11D1513-MSI) Source:IUD0863-05 <br /> Benzene 3.99 0.051 mg/kg 2.53 0.969 120 55-140 <br /> Toluene 3.03 0.051 mg/kg 2.53 0.260 110 55-140 <br /> Di-isopropyl Ether(DIPE) 2.42 0.10 mg/kg 2.53 ND 96 60-150 <br /> Ethyl tort-Butyl Ether(ETBE) 3.11 0.10 mg/kg 2.53 ND 123 60-150 <br /> Methyl-tert-butyl Ether(MTBE) 2.66 0.10 mg/kg 2.53 ND 105 55-155 <br /> tert-Amyl Methyl Ether(TAME) 3.34 0.10 mg/kg 2.53 ND 132 60-150 <br /> tert-Butanol(TBA) 9.70 1.0 mg/kg 12.7 ND 77 60-155 <br /> Surrogate:4-Bromofluorobemene 2.74 mg/kg 1.53 108 65-140 <br /> Surrogate:Dibromofluoromethane 2.37 mg/kg 2.53 93 55-140 <br /> Surrogate:Toluene-d8 2.39 mg/kg 2.53 94 60-140 <br /> Matrix Spike Dup Analyzed:04/15/2011(11D1513-MSD1) Source:IUD0863-05 <br /> Benzene 4.15 0.050 mg/kg 2.50 0.969 127 55-140 4 25 <br /> Toluene` 2.97 0.050 mg/kg 2.50 0.260 109 55440 2 25 - <br /> Di-isopropyl Ether(DIPE) 1.81 0.10 mg/kg 2.50 ND 73 60-150 29 25 R <br /> Ethyl tert-Butyl Ether(ETBE) 2.29 0.10 mg/kg 2.50 ND 92 60-150 30 25 R <br /> Methyl-tert-butyl Ether(MTBE) 1.94 0.10 mg/kg 2.50 ND 78 55-155 31 30 R <br /> tert-Amyl Methyl Ether(TAME) 2.54 0.10 mg/kg 2.50 ND 101 60-150 27 25 R <br /> tert-Butanol(TBA) 7.39 1.0 mg/kg 12.5 ND 59 60-155 27 25 R-3,M2 <br /> Surrogate:4-Bromofluorobeimene 2.30 mg/kg 2.50 92 65-140 <br /> Surrogate:Dibromofluoromethme 1.84 mg/kg 2.50 74 55-140 <br /> TestAmerica Irvine <br /> Philip Sanelle <br /> Project Manager <br /> The results pertain only to the samples tested in the laboratory. This report shall not be reproduced, /UD0863 <page 26 of 37> <br /> except In full,without written permission from TestAmerica. <br />