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• 1455 McDowell Blvd,North Ste D <br /> Sequoia Petaluma,CA94954 <br /> 79 <br /> (707)792-]865 <br /> �W Analytical www <br /> seq 7) labs co 2 <br /> www sequoialabs com <br /> URS Corp-Sacramento Project BP Heritage Site 11191,Stockton,Ca P501283 <br /> 2870 Gateway Oaks Drive Suite 300 Project Number WR36368 Reported <br /> Sacramento CA,95833 Project Manager Vernon P Elarth 01/27/0508 37 <br /> Volatile Organic Compounds by EPA Method 8260B <br /> Sequoia Analytical - Petaluma <br /> Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Note <br /> MW-7(P501283-07)Water Sampled 01/12/05 07 45 Received 01/14/05 14 30 <br /> Tert-amyl methyl ether ND 1 0 ugll 1 5010267 01/25/05 01/25/05 EPA 8260E <br /> Benzene ND 0 50 " <br /> Tert-butyl alcohol ND 20 <br /> Di-isopropyl ether ND 10 " <br /> Ethanol ND 100 " <br /> Ethylbenzene ND 050 <br /> Ethyl tert-butyl ether ND 10 " <br /> Methyl tert-butyl ether ND 0 50 " <br /> Toluene ND 0 50 " <br /> Xylenes(total) ND 050 " <br /> Surrogate Dibromofluorometharre 95% 84-122 <br /> Surrogate 1 2-Dichloroethane-d4 103% 74-135 " <br /> Surrogate Toluene-d8 91 % 84-119 <br /> Surrogate 4-Bromofluorobenzene 89% 86-119 <br /> Sequoia Analytical -Petaluma The results in this report apply to the samples analyzed in accordance with the chain of <br /> custody document Unless otherwrse stated results are reported on a wet weight basis <br /> This analytical report must be reproduced in its entirety <br /> Page 7 of 12 <br />