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TestAmerica <br /> THE LEADER IN ENVIRONMENTAL TESTING 17461 Dorian Avenue.Suite 100, Irvine,CA 92614(949)261-1022 Fex:(949)260-3297 <br /> Conestoga-Rovers&Associates-Emeryville Shell Project ID: 3515 Nary 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 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:11D1882 Extracted:04/15/11 <br /> LCS Dup Analyzed:04/18/2011(11D1882-BSD!) <br /> Benzene 2.46 0.050 mg/kg 2.50 98 65-120 3 20 <br /> Ethylbenune 2.57 0.050 mg/kg 2.50 103 80-120 2 20 <br /> Toluene 2.48 0.050 mg/kg 2.50 99 80-120 1 20 <br /> m,p-Xylenes 5.12 0.10 mg/kg 5.00 102 . 70-125 3 20 <br /> o-Xylene 2.47 0.050 mg/kg 2.50 99 70-125 7 - 20 <br /> Xylenes,Total 7.60 0.10 mg/kg 7.50 101 70-125 5 20 <br /> Di-isopropyl Ether(DIPE) 2.84 0.10 mg/kg 2.50 113 60-140 0.8 20 <br /> Ethyl tert-Butyl Ether(ETBE) 2.76 0,10 mg/kg 2.50 110 60-140 3 20 <br /> Methyl-tert-butyl Ether(MTBE) 2.54 0.10 mg/kg 2.50 102 55-145 2 25 <br /> tort-Amyl Methyl Ether(TAME) 2.69 0.10 mg/kg 2.50 107 60-145 0.9 25 <br /> tert-Butanol(TBA) 11.9 1.0 mg/kg 12.5 95 65-140 0.2 20 <br /> Surrogate:4-Bromofluorobenzene 2.46 mg/kg 2.50 98 65-140 <br /> Surrogate:Dibromofluoromethane 2.41 mg/kg 2.50 96 55-140 <br /> Surrogate:Toluene-d8 2.46 mg/kg 2.50 99 60440 <br /> Matrix Spike Analyzed:04/18/2011(11D1882-MS1) Source:IUD0773-07 <br /> Benzene 3.15 0.050 mg/kg 2.49 0.183 119 55-140 <br /> Ethylbenzene 9.66 0.050 mg/kg 2.49 3.60 243 50-150 Ml <br /> Toluene 5.09 0.050 mg/kg 2.49 1.05 162 55-140 M1 <br /> m,p-Xylenes 30.2 0.10 mg/kg 4.99 13.5 335 60-145 MI <br /> o-Xylene 12.0 0.050 mg/kg 2.49 4.80 288 55-145 Ml <br /> Xylenes,Total 42.2 0.10 mg/kg 7.48 18.3 319 55-145 Ml <br /> Di-isopropyl Ether(DIPE) 2.85 0.10 mg/kg 2.49 ND 115 60-150 <br /> Ethyl tert-Butyl Ether(ETBE) 2.50 0.10 mg/kg 2.49 ND 100 60-150 <br /> Methyl-tort-butyl Ether(MTBE) 2.45 0.10 mg/kg 2.49 ND 98 55-155 <br /> tert-Amyl Methyl Ether(TAME) 2.33 0.10 mg/kg 2.49 ND 94 60-150 <br /> ten-Butanol(TBA) 11.7 1.0 mg/kg 12,5 ND 94 60-155 <br /> Surrogate:4-Bromofluorobenzene 2.70 mg/kg 2.49 108 65-140 <br /> Surrogate:Dibromofluoromethane 2.39 mg/kg Z49 96 55-140 <br /> Surrogate:Toluene-c8 2.71 mg/kg 2.49 109 60-140 <br /> TestAnnerica Irvine <br /> Philip Sanelle <br /> Project Manager <br /> The results pertain only to the samples rested in the/abamiory. This report shall not be reproduced, j4 jUDOB63 GPp a 0f37> <br /> except lnfu/l,without wrluenpermissionjrom Tesmmerim. 8 <br />