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1455 McDowell Blvd,North Ste D <br /> Sequoia Petaluma, 94954 <br /> 79 <br /> (707)792-1865 <br /> FAX 07342 <br /> Analytical wwwsequoialabs com <br /> URS Corp-Sacramento Project BP Heritage Site 11194,Tracy,Ca P404694 <br /> 2870 Gateway Oaks Drive Suite 300 Project Number WR36365 Reported <br /> Sacramento CA,95833 Project Manager Vernon P EIarth 05/25/04 13 28 <br /> Purgeable Hydrocarbons by EPA 8015B - Quality Control <br /> Sequoia Analytical -Petaluma <br /> Reporting Spike Source %RFC RPD <br /> Analyte Result limit Units Level Result °/uREC Urnits RPD lama Notes <br /> Batch 4050184-EPA 5030B,waters <br /> Matrix Spike Dup(4050184-MSD1) Source P404694-01 Prepared&Analyzed 05/08/04 <br /> Gasoline Range Organics(C4-C 12) 2180 50 ugA 2750 ND 79 65-135 09 20 <br /> Surrogate 4-Bromofluorobenzene 301 300 101 65-135 <br /> Batch 405025'1-EPA 5030B,waters <br /> Blank(4050257-BLKI) Prepared&Analyzed 05/11/04 <br /> Gasolene Range Organics(C4-C 12) ND 50 ugA <br /> Surrogate 4-Bromofluorobenzene 302 300 101 65-135 <br /> Laboratory Control Sample(4050257-BSI) Prepared&Analyzed 05/11/04 <br /> Gasoline Range Organics(C4-C 12) 2450 50 ug/l 2750 89 65-135 <br /> Surrogate 4-Bromofluorobenzene 330 300 110 65-135 <br /> AMkMatrix Spike(4050257-MSI) Source P404692-01 Prepared&Analyzed 05/11/04 <br /> Gasoline Range Organics(C4-C 12) 2060 50 u9/1 2750 ND 75 65-135 <br /> Surrogate 4-Bromofluorobenzene 301 11300 100 65-135 <br /> Matrix Spike Dup(4050257-MSD1) Source P404692-01 Prepared&Analyzed 05/11/04 <br /> Gasoline Range Organics(C4-C12) 2090 50 ugll 2750 ND 76 65-135 1 20 <br /> Surrogate 4-Bromofluorobenzene 300 300 100 65-135 <br /> Sequoia Analytical-Petaluma The results to this report apply to the samples analyzed in accordance with the chain of <br /> custody document Unless otherwise stated results are reported an a wet weight basis <br /> This analytical report must be reproduced in its entirety <br /> Page 13 of 21 <br />