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YM <br /> n` 404 N Wlget lane <br /> 4Walnut Creek CA 94598 <br /> Sequoia (925)988-9600 <br /> i!DFAX(925)988-9673 <br /> ONO Analytical www sequoialabs corn <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 04-Oct-00 08 08 <br /> Total Purgeable Hydrocarbons (C6-C12) and BTEX in Air by DHS LUFT <br /> Sequoia Analytical -Walnut Creek <br /> Reporting <br /> Analyte Result Lurut Units Dilution Batch Prepared Analyzed Method Nates <br /> Ef fluent(W009691-01)Air Sampled 28-Sep-00 13 43 Received 28-Sep-00 15 26 <br /> Purgeable Hydrocarbons ND 20 mglm'Air 02 0I29004 29-Sep-00 29 Sep-00 DHS LUFT <br /> Benzene ND 0 010 " <br /> Toluene ND 0 010 " <br /> Ethylbenzene ND 0 010 " <br /> Xylenes(total) ND 0 010 " <br /> Surrogate a a a-Ttnfluorotoluene 903 % 70-130 <br /> Influent(W009691-02)Air Sampled 28-Sep-00 13 43 Received 28-Sep-00 15 26 <br /> Purgeable Hydrocarbons 40 24 ppmv 1 0129004 29-Sep-00 29-Sep 00 DHS LUFT <br /> Benzene ND 0 016 " <br /> Toluene ND 0013 " <br /> Ethylbenzene 0 047 0 012 " <br /> nes(total) 0 093 0 012 <br /> byl ter(-butyl ether 20 014 " <br /> equoia Analytical-Walnut Creek The results in this report apply to the samples analyzed to accordance with the chain of <br /> custody document This analytical report must be reproduced in its entirety <br /> Page 3 of 8 <br /> I <br />