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I Blvd,North Ste <br /> ' <br /> a— —) <br /> Sequoia 1455McbowPetaluma,CA94954 Analytical (707)792-1345 <br /> FAX 707 792 0342 <br /> www sequocalabs com <br /> • <br /> URS Corp-Sacramento Protect BP Heritage Site 11191,Stockton,Ca P307259 <br /> 2870 Gateway Oaks Drive Suite 300 Project Number WR36368 Reported <br /> Sacramento CA,95833 Project Manager Vernon P Elarth 07/28/03 18 02 <br /> Total Petroleum Hydrocarbons as Gasoline by EPA 8015B <br /> Sequoia Analytical - Petaluma <br /> Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> MW-1(P307259-0I)Water Sampled 07/11/03 14 40 Received 07/15/03 09 30 <br /> Gasoline Range Organics 4200 500 ug/l 10 3070370 07/18/03 07/18/03 EPA HC-19a <br /> 8015B-VOA <br /> Surrogate 4-Bromofluorobenzene 101 % 65-135 " <br /> MW-2(P307259-02)Water Sampled 07/11/03 14 20 Received 07/15/03 09 30 <br /> Gasoline Range Organics 650 100 ug/l 2 3070370 07/18/03 07/18/03 EPA HC-19 <br /> 8015B-VOA <br /> Surrogate 4-Bromofluorobenzene 100% 65-135 " <br /> MW-3(P307259-03)Water Sampled 07/11/03 14 30 Received 07/15/03 09 30 <br /> Gasoline Range Organics 5000 500 ug/l 10 3070403 07/21/03 07/21/03 EPA HC-19b <br /> 8015B-VOA <br /> Surrogate 4-Bromofluorobenzene 94% 65-135 " <br /> MW4(P307259-04)Water Sampled 07/11/03 14 00 Received 07/15/03 09 30 <br /> �as obn e Range Organics91�0 �1 ugll2 3070403 �07121 07!21/03 EPA <br /> 8015B-VOA <br /> Surrogate 4-Bromofluorobenzene 93% 65-135 " <br /> MW-5(P307259-05)Water Sampled 07/11/03 13 40 Received 07/15/03 09 30 <br /> Gasoline Range Organics 1100 50 ug/1 1 3070403 07/21/03 07/21/03 EPA HC-19b <br /> 801513-VOA <br /> Surrogate 4-Bromofluorobenzene 93% 65-135 " <br /> MW-6(P307259-06)Water Sampled 07/11/03 14 45 Received 07/15/03 09 30 <br /> Gasoline Range Organics ND 50 ug/l 1 3070403 07/21/03 07/21/03 EPA <br /> 8015B-VOA <br /> Surrogate 4-Bromofluorobenzene 95% 65-135 " <br /> MW-7(P307259-07)Water Sampled 07/11/03 13 50 Received 07/15/03 09 30 <br /> Gasoline Range Organics ND 50 ug/l 1 3070403 07/21/03 07/21/03 EPA <br /> 8015B-VOA <br /> Surrogate 4-Bromofluorobenzene 92% 65-135 " 11 <br /> Sequoia Analytical-Petaluma The results on 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 3 of 11 <br />