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Lane <br /> Sequoia Walnut Creek CIA 9 598 <br /> (925)988-9600 <br /> FAX(925)988-9673 <br /> Ana ytica l www sequolalabs cam <br /> Gettler Ryan, Inc -Dublin Project Tosco <br /> 6747 Sierra Court Suite J Project Number Tosco## 6981 Reported <br /> Dublin CA,94568 Project Manager Scott Polston 09-Aug-Ol 10 34 <br /> Total Purgeable Hydrocarbons (C6-C12), BTEX and MTBE b DHS LUFT - Quality Control <br /> y Q � <br /> Sequoia Analytical - Walnut Creels <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch 1G27002-EPA 5030B PIT <br /> LCS Dup(1G27002-BSD1) Prepared 26-Jul-01 Analyzed 02-Aug-01 <br /> Benzene 202 0 10 mg/ml Air 200 101 70-130 404 25 <br /> Toluene 198 010 2 00 990 70-130 518 25 <br /> Ethylbenzene 193 0 10 2 00 965 70-130 4 77 25 <br /> Xylenes(total) 544 0 10 6 00 907 70-130 490 25 <br /> Surrogate a a a-Triuorotoluene 546 600 910 70-130 <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 as ental <br /> Page 5 of 6 <br />