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Sequoia 1455 McDowell Blvd,North Ste D <br /> Petaluma,CA 94954 <br /> a— —) (707)Analytical FAX 792-1865 <br /> 792-0342 <br /> www sequoiequoialabs coni <br /> URS Corp-Sacramento Project BP Heritage Site 11194,Tracy,Ca P308015 <br /> 2870 Gateway Oaks Drive Suite 300 Project Number WR36365 Reported <br /> Sacramento CA,95833 Project Manager Vernon P Elarth 09/16/03 17 10 <br /> Total Petroleum Hydrocarbons as Gasoline by EPA 8015B- Quality Control <br /> Sequoia Analytical- Petaluma <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch 3080090-EPA 5030,waters <br /> Blank(3080090-BLKI) Prepared&Analyzed 08/06/03 <br /> Gasoline Range Organics ND 50 ugA <br /> Surrogate 4-Bromofluarobenzene 187 300 96 65-135 <br /> Laboratory Control Sample(3080090-BSI) Preeared&Analyzed 08/06/03 <br /> Gasoline Range Organics 2530 50 ugA 2750 92 65-135 <br /> Surrogate 4-Bromofluarobenzene 304 " 300 101 65-135 <br /> Matrix Spike(3080090-MS1) Source P307552-01 Prepared&Analyzed 08/06/03 <br /> Gasoline Range Organics 2500 50 ugll 2750 34 90 65-135 <br /> Surrogate 4-Bromofluorobenzene 199 300 100 65-135 <br /> Matrix Spike Du 3080090-MSD1 Source P307552-01 Prepared&Analyzed 08/06/03 <br /> J11101lasoline Range Organics 2550 50 ugA 2750 34 91 65-135 2 20 <br /> urrogate 4-Bromofluorobenzene 307 300 102 65-135 - <br /> Batch 3080091 -EPA 5030,waters <br /> Blank(3080091-BLKI) Prepared&Analyzed 08/06/03 <br /> Gasoline Range Organics ND 50 ug/l T <br /> Surrogate 4-Bromofluorobenzene 196 " 300 99 65-135 <br /> Laboratory Control Sample(3080091-BSI) Prepared&Analyzed 08/06/03 <br /> Gasoline Range Organics 2410 50 ug/l 2750 88 65-135 - ^ <br /> Surrogate 4-Bromofluorobenzene 311 300 107 65-135 <br /> Matrix Spike(3080091-MSI) Source P308015-01 Prepared&Analyzed 08/06/03 <br /> Gasoline Range Organics 2430 50 ug/l 2750 20 88 65-135 <br /> Surrogate 4 Bromofluorobenzene 311 " 300 104 65-135 <br /> �equoia Analytical -Petaluma The results in this report apply to the samples analyzed in accordance with the chain <br /> of custody document Unless otherwise stated results are reported on a wet weight <br /> basis This analytical report must be reproduced in its entirety <br /> Page 12 of 21 <br />