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Sequoiaa— ) (408) <br /> JarvisDrive <br /> 11i s Morgan hll,CA 950375037 <br /> Analytical 776-9600 <br /> Y FAX(408)782-6308 <br /> www sequotalabs Corr <br /> S Corporation[11 Project BP Hentage Site 411191,Stockton,CA <br /> 2870 Gateway Oaks Dr,Ste 300 Project Number BP Heritage Site#11191,Stockton,CA Reported <br /> Sacramento CA,95833 Project Manager Vem Elarth 11/04/02 09 31 <br /> Total Purgeable Hydrocarbons (C6-C10) by EPA 8015B modified, BTEXM by EPA 8021B- Quality Control <br /> Sequoia Analytical-Morgan Hill <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch 2J23003-EPA 5030EJP/TJ <br /> Blank 2J23003-BLKI Prepared&Analyzed 10/23/02 <br /> Gasoline Range Organics(C6-C10) ND 50 ugll <br /> Benzene ND 050 " <br /> Toluene ND 050 " <br /> Ethylbenzene ND 050 " <br /> Xylenes(total) ND 0 50 " <br /> Methyl tert-butyl ether ND 2 5 " <br /> Surrogate a a a-Trifluorotoluene 11 1 100 111 55-142 <br /> LCS(2J23003-BS1) Prepared&Analyzed 10/23/02 <br /> Benzene 101 050 119/1 10 0 101 68-140 <br /> Toluene 104 050 10 0 104 76-127 <br /> Ethylbenzenc 105 050 10 0 105 77-130 <br /> Xylenes(total) 302 050 300 101 78-128 <br /> 01-1-9-1. <br /> a a a-Trifluorotoluene 11 7 100 117 55-141 <br /> LCS(2J23003-BS2) Prepared&Analyzed 10/23/02 <br /> Gasoline Range Organics(C6-C10) 232 50 ug/l 250 928 62-I34 <br /> Surrogate a a a-Trifluorotoluene 14.5 100 145 55-141 S-02 <br /> Matrix Spike(2.123003-MS1) Source MLJ0470-13 Prepared&Analyzed 10/23/02 <br /> Gasoline Range Organics(C6-C10) 492 50 11911 550 ND 895 62-134 <br /> Benzene 8 34 050 6 60 ND 126 68-140 <br /> Toluene 38 8 050 39 7 ND 97 3 76-127 <br /> Ethylbenzene 8 84 050 920 ND 961 77-130 <br /> Xylenes(total) 424 050 46 1 0 75 903 78-128 <br /> Surrogate a a a-Trifluorotoluene 973 100 973 55-142 <br /> Matrix Spike Du (2J23003-MSD1) Source MLJO470-13 Prepared&Analyzed 10/23/02 <br /> Gasoline Range Organics(C6-C10) 518 50 ug/1 550 ND 942 62-134 5 15 41 <br /> Benzene 9 15 050 660 ND 139 68-140 926 30 <br /> Toluene 402 050 397 ND lot 76-127 3 54 30 <br /> Ethylbenzene 9 50 050 920 ND 103 77-130 720 21 <br /> Xylenes(total) 476 050 " 461 075 102 78-128 11 6 21 <br /> Surrogate a a a-Trifluorotoluene 11 5 100 115 55-142 <br /> Sequoia Analytical-Morgan Hill The results in this report apply to the samples analyzed in accordance with the chain <br /> • of custody document This analytical report must be reproduced in its entirety <br /> 4of6 <br />