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1455 McDowell Blvd,North Ste D <br /> Sequoia Petaluma,CA 94954 <br /> (707)792-1665 <br /> rr Analytical FAX(707)792-0342 <br /> www sequoialabs com <br /> [TRS Corp-Sacramento Project BP Heritage Site 11191,Stockton,Ca P304289 <br /> 2870 Gateway Oaks Drive Suite 300 Project Number WR36368 Reported <br /> Sacramento CA,95833 Project Manager Vernon P Elarth 04/25/03 17 26 <br /> Total Petroleum Hydrocarbons as Gasoline and BTEX by EPA 8015B18021B <br /> Sequoia Analytical- Petaluma <br /> Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> MW-7 304289-0 Water Sampled 04/10/03 11 00 Received 04/11/03 14 30 <br /> Gasoline Range Organics ND 50 ug/1 1 3040403 04/17/03 04/17/03 EPA <br /> 8015B/8021B <br /> Benzene ND 050 <br /> Toluene ND 050 " <br /> EthyIbenzene ND 050 " <br /> Xylenes(total) ND 050 " <br /> Methyl tert-butyl ether ND 25 " <br /> Surrogate a aa-Trifluorotoluene 105% 65-135 " <br /> Surrogate 4-Bromofluorobenzene 92% 65-135 " <br /> Sequoia Analytical-Petaluma The results in this report apply to the samples analyzed in accordance with the chain of <br /> custody document Unless otherwise stated results are reported on a wet weight basis <br /> This analytical report must be reproduced in its entirety <br /> Page 5 of 10 <br />