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a— ) (4885 Jarvis Drive <br /> Sequoia Morgan Hilt,CA 95037 <br /> Analytical <br /> 08)776- 00 <br /> FAX(408)782-636308 <br /> www sequo�aEahs torr <br /> URS=,tw <br /> Project BP Hentage Site#11191,Stockton,CA <br /> 287Q e 300 Project Number $P Heritage Site#11191,Stockton,CA Reported <br /> SacraProject Manager Vern Elarth 11/04/02 0931 <br /> Total Purgeable Hydrocarbons (C6-C10) by EPA 8015B modified,BTEXM by EPA 8021B- Quality Control <br /> Sequoia Analytical-Morgan Hill <br /> Reporting Speke Source %REC RPD <br /> Analyte Result Limit ]Jetts Level Result %REC Limits RPD Lima Notes <br /> Batch 2J25002-EPA 5030B IP/T] <br /> Blank 2325002-BLK1 Prepared&Anal zed 10/25/02 <br /> Gasoline Range Organics(C6-C10) ND 50 ug/1 <br /> Benzene ND 050 " <br /> Toluene ND 050 " <br /> Ethylbenzene ND 0 50 " <br /> Xylenes(total) ND 050 " <br /> Methyl tent-butyl ether ND 2 5 " <br /> Surrogate a a a-Trnfluorotoluene 996 10 0 996 55-141 <br /> LCS(2J25002-BS1) Prepared&Analyzed 10/25/02 <br /> Benzene 11 6 0 50 ug/l 100 116 68-140 <br /> Toluene 11 7 0 50 10 0 117 76-I27 <br /> Ethylbenzene 12 1 0 50 10 0 121 77-130 <br /> Xylenes(total) 35 2 050 30 0 117 78-128 <br /> rrogate a a a-Triuorotoluene 11 0 10 0 110 55-141 <br /> LCS 2J25002-BS2 Prepared&Analyzed 10/25/02 <br /> Gasoline Range Organics(C6-C10) 233 50 119/1 250 93 2 62-134 <br /> Surrogate a a a-Trtlluorotoluene 8 74 100 874 55-142 <br /> LCS Dug(2325002-BSDI) Prepared&Analyzed_,10/25/02 <br /> Benzene 10 2 0 50 ugfl f 0 0 102 68-140 12 8 30 <br /> Toluene 102 0 50 100 102 76-127 137 30 <br /> Ethylbenzene 9 82 0 50 10 0 982 77-130 20 8 21 <br /> Xylenes(total) <br /> 302 0 50 300 101 78-128 153 21 <br /> I <br /> Surrogate a a a-Trtfluorotoluene 9 41 100 941 55-142 <br /> LCS Du (2J25002-BSD2) Prepared&Analyzed 10/25/02 <br /> Gasoline Range Organics(C6-C10) 259 50 119/1 250 104 62-134 106 41 <br /> Surrogate a a a-Trifluorotoluene 9 02 100 902 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 /> 5 of 6 <br />