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TestAmerica <br /> THE LEADER IN ENVIRONMENTAL TESTING 17461 Delon 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 <br /> Emeryville,CA 94608 Sampled: 04/08/11 <br /> ReportNumber: IUD1020 Received: 04/12/11 <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 /> Batch:11D2098 Extracted:04/17/11 /o <br /> Analyte Result - Limit Units Level Result REC Limits RPD Limit <br /> a Qualifiers <br /> Matrix Spike Dup Analyzed:04/18/2011(11D2098-MSDI) Source:IUD1020-05 <br /> Benzene <br /> 2.76 0.049 Mg/kg 2.46 0.197 104 55-140 5 25 <br /> Ethylbenzene 11.9 0.049 mg/kg 2.46 5.58 259 50-150 5 25 <br /> Toluene M1 <br /> 2.73 0.049 mg/kg 2.46 0.0374 109 55-140 0.8 25 <br /> m,p-Xylenes 41.6 0.098 mg/kg 4.92 20.2 435 60-145 5 25 <br /> o-Xylene 3.92 0.049 mg/kg 2.46 0.647 133 55-145 0.6 25 M1 <br /> Xylenes,Total 45.5 0.098 mg/kg 7.38 20.8 334 55-145 5 25 <br /> Di-isopropyl Ether(DIPE) 2.54 0.098 mg/kg 2.46 ND M1, <br /> Ethyl tert-Butyl Ether(ETBE) 2.29 0.098 m 3 60-150 3 25 <br /> mg/kg <br /> Methyl-tert-butyl Ether(MTBE) 2.22 0.098 mgg 2'.246 ND 9 93 60-150 2 25 <br /> lfk <br /> tert-Amyl Methyl Ether(TAME) 2.19 0.098 m <br /> 46 ND 90 55-155 4 30 <br /> g/kg 2.46 ND 89 60-150 2 25 <br /> tert-Butanol(TBA) 11.3 0.98 mg/kg 12.3 ND 92 60-155 2 25 <br /> Surrogate:4-Bromofluorobenzene 2.30 mg/kg 2.46 94 65-140 <br /> Surrogate:Dibromofluoromethane 1.88 mg/kg 2.46 77 55-140 <br /> Surrogate: Toluene-d8 229 <br /> rnP✓k8 2.46 93 60-/40 <br /> Batch: 11D2102 Extracted:04/17/11 <br /> Blank Analyzed:04/17/2011(11D2102-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(DIPE) ND 0.0020 mg/kg <br /> Ethyl tert-Butyl Ether(ETBE) ND 0.0020 mg/kg <br /> Methyl-tert-butyl Ether(MTBE) ND 0.0020 mg/kg <br /> ten-Amy)Methyl Ether(TAME) ND 0.0020 mg/kg <br /> tert-Butanol(TBA) ND 0.020 mg/kg <br /> Surrogate:4-Bromofluorobenzene 0.0486 mg/kg 0.0500 97 80-120 <br /> Surrogate:Dibromofluoromethane 0.0510 mg/kg 0.0500 104 80-125 <br /> Surrogate:Toluene-d8 0.0524 mg/kg 0.0500 105 80-120 <br /> TestAmerica Leine <br /> Philip Sanelle <br /> Project Manager <br /> The results pertain only to the samples tested in the laboratory. This report shall not be reproduced, <br /> exeepNnfuO,without writteupermissionfrom TesUmerica. IOD1020 <Page 11 of 15> <br />