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404 N Wiget Lane <br /> Walnut Creek CA 94598 <br /> Sequoia (925)988-9600 <br /> IDFAX(925)988-%73 <br /> Ow Analytical www sequolalabs com <br /> Gettler Ryan,Inc -Dublin Protect Tosco <br /> 6747 Sierra Court Suite J Project Number Tosco#6981 Reported <br /> Dublin CA,94568 Project Manager Scott Polston 10-Jul-01 11 18 <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 /> 6981-Effluent(W106450-01)Air Sampled 21-Jun-011229 Received 224un-01 1555 <br /> Purgeable Hydrocarbons ND 10 mg/m3 Air 0 2 I F22003 25-Jun-01 25-Jul-01 DHS LUFT <br /> Benzene ND 010 " <br /> Toluene ND 010 " <br /> Ethylbenzene ND 010 <br /> Xylenes(total) ND 0 l0 <br /> Methyl tert-butyl ether ND 050 " <br /> Surrogate a,a,a-Trifluorotoluene 890% 70-130 " <br /> 6981-Influent(W106450-02)Air Sampled 21-Jun-01 12 25 Received 22-Jun-01 1555 <br /> Purgeable Hydrocarbons ND 10 mg/m3 Air 02 1 F22003 25-Jun-01 25-Jul-01 DHS LUFT <br /> Benzene ND 010 " <br /> Toluene ND 010 " <br /> Ethylbenzene ND 010 <br /> Ones <br /> (total) ND 0 10 " <br /> yl tert-butyl ether ND 0 50 <br /> Surrogate a a a-Trifluorotoluene 893% 70-130 " <br /> uoia Analytical-Walnut Creek The results in thrs report apply to the samples analyzed in accordance with the chain of <br /> custody document This analytical report must be reproduced in its entirety <br /> Page 2 of 6 <br />