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Sequoia Walnut <br /> N WiLame <br /> t Creels CAA 94598 <br /> (925)988-9600 <br /> Analytical FAX equo alabs c 73 <br /> www sequoialabs cpm <br /> Gettler Ryan,Inc -Dublin Project Tosco <br /> 6747 Sierra Court Suite 7 Project Number Tosco#6981 Reported <br /> Dublin CA 94568 Project Manager Scott Polston 02-Jan-01 18 17 <br /> Total Purgeable Hydrocarbons (C6-C12), BTEX and MTBE by DHS LUFT - Quality Control <br /> Sequoia Analytical -Walnut Creek <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Lumts RPD Luntt Notes <br /> Batch OL14004-EPA 5030B [P/TJ <br /> LCS(OL14004-BS2) Prepared&Analyzed 14-Dec-00 <br /> Benzene <br /> 346 0 10 mg/ml Air 400 865 70-130 <br /> Toluene 348 0 10 400 870 70-130 <br /> Ethylbenzene 346 0 10 400 865 70-130 <br /> Xylenes(total) 104 0 10 120 867 70-130 <br /> Surrogate aaa-Tris luorotoluene 554 600 923 70-130 <br /> LCS(OL14004-BS3) Prepared&Analyzed 19-Dec-00 <br /> Benzene 334 0 10 mg/ml Air 4 00 835 70-130 <br /> Toluene 334 0 10 400 83 5 70-130 <br /> Ethylbenzene 330 0 10 400 825 70-130 <br /> Xylenes(total) 988 0 10 120 823 70-130 <br /> Surrogate as a-TriJluorotoluene 548 600 913 70-130 <br /> LCS Dup(OL14004-BSD1) Prepared&Analyzed 13-Dec-00 Q-0 i <br /> Benzene 1 12 0 10 mg/m'Air 200 560 70430 935 25 <br /> Toluene 129 0 10 2 00 645 70430 243 25 <br /> Ethylbenzene 101 0 10 2 00 505 70-130 445 25 <br /> Xylenes(total) 324 0 10 6 00 540 70-130 11 1 25 <br /> Surrogate as a-Tq luoratoluene 564 600 940 70-130 <br /> I <br /> Sequoia Analytical-Walnut Creek The results in this report apply to the samples analyzed in accordance with the char <br /> custody document This analytical report must be reproduced in its enur <br /> Ip <br /> Page 5 of 8 <br />