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885 Jarvis Dr <br /> lx� Sequoia Mcrg,in Hill,CA 95031 <br /> Analytical FAX(08)782-6308 <br /> www sequoialabs con <br /> 1287SO <br /> RCorporation(1) Project BP Heritage Site#11194,Tracy,CA MMB0060 <br /> Gateway Oaks Dr,Ste 300 ProjectNumber BP Heritage Site#11194,Tracy,CA Reported <br /> acramento CA,95833 Project Manager Vern Elarth 03/07/03 08 04 <br /> al Purgeable Hydrocarbons (C6-C10) and Volatile Organic Compounds by EPA method 8260B- Quality Con <br /> Sequoia Analytical - Morgan Hill <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Lunt Notes <br /> Batch 3BI3026-EPA 503013 PIT <br /> Blank(31373026-BLK1) Prepared&Analyzed 02/13/03 <br /> Methyl tett-butyl ether ND 050 ug/1 <br /> Benzene ND 050 " <br /> Toluene ND 050 " <br /> Ethylbenzene ND 050 " <br /> Xylenes(total) ND 050 " <br /> Gasoline Range Organics(C6-C10) ND 50 " <br /> Surrogate 12-Dichloroethane-d4 547 5 00 109 78-129 <br /> Laboratory Control Sample(3B13026-BSI) Prepared&Analyzed 02/13/03 <br /> Methyl tert-butyl ether 10 2 050 ug/1 100 102 63-137 <br /> 4Wze10 4 050 " 100 104 78-124 <br /> hienene 10 7 050 100 107 78-129 <br /> Surrogate 1 2-Dichloroethane-d4 527 500 105 78-129 <br /> Laboratory Control Sample(3B13026-BS2) Prepared 02/13/03 Analyzed 02/14/03 <br /> Toluene 58 7 050 ug/l 65 6 89 5 78-129 <br /> Gasoline Range Organics(C6-C 10) 868 50 880 98 6 70-113 <br /> Surrogate 1 2-Dichloroethane-d4 534 500 107 78-129 <br /> Batch 3B24023-EPA 5030B P/T <br /> Blank(3B24023-BLKI) Prepared&Analyzed 02/24/03 <br /> Methyl tert-butyl ether ND 050 ug/l <br /> Benzene ND 050 <br /> Toluene ND 050 " <br /> Ethylbenzene ND 050 " <br /> Xylenes(total) ND 050 " <br /> Gasoline Range Organics(C6-C 10) ND 50 <br /> Surrogate 1 2-Dichloroethane-d4 533 500 107 78-129 <br /> �equoia Analytical-Morgan Hill The results in this report apply to the samples analyzed in accordance with the chain of <br /> custody document Unless otherwise stared results are reported on a wet weight basis <br /> This analytical report must be reproduced in its entirety <br /> 8 of 11 <br />