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y <br /> Sequoia 404 N wlA Lane <br /> 4D- <br /> ico <br /> Walnut Creek CA 94548 <br /> (925)988-9600 <br /> Analytical FAX equ atabs98& c 73 <br /> www sequoiatabs com <br /> Getticr Ryan,Inc -Dublin Protect Tosco <br /> 6747 Sierra Court Suite! Project Number Tosco 4 6981 Reported <br /> Dublin CA,94568 Project Manager Scott Polston 05-Sep-01 18 11 <br /> Total-Purgeable Hydrocarbons (C6-C12),BTEX and MTBE by-DHS-LUFT-- _- - <br /> Sequoia Analytical - Walnut Creek <br /> Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> Ve- 1(W108418-08)Air Sampled 23-Aug-0109:02 Received 23-Aug-01 11 03 <br /> Purgeable Hydrocarbons(C6-C 12) ND 10 mg/ml Air 02 1 H21003 23-Aug-01 23-Aug-01 DHS LOFT <br /> Benzene ND 010 " <br /> Toluene ND 010 <br /> Ethylbenzene ND 010 <br /> Xylenes(total) ND 010 <br /> Methyl tert-butyl ether(MTBE) ND 050 " <br /> Surrogate a a a-Trifluorotoluene 940% 70-130 " <br /> I <br /> I <br /> Sequoia Analytical- Walnut Creek The results in this report apply to the samples analyzed in accordance with the chain of <br /> custody document Tlrrs analytical report must be reproduced in its en* <br /> Page 4 of 12 <br />