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Sequoia CA 404 N Lane <br /> Walnut Creek CA 94598 <br /> 4 (925)988-9600 <br /> fAX(925)988-%73 <br /> Analytical www sequoialabs corn <br /> [settler Ryan Inc -Dublin Project Tosco <br /> 6747 Sierra Court Suite J Project Number Tosco#6981 Reported <br />__- =Dublin CA 94568 = Project Manager Scott Polston 15-Dec-00 15 21 <br /> Total Purgeable Hydrocarbons (C6-C12) and BTEX in Air by DHS LUFT <br /> Sequoia Analytical - Walnut Creek <br /> Reporting <br /> Analvte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> Effluent(W012019-II)Air Sampled 01-Dec-000839 Received 01-Dec-00 14 37 <br /> Purgeable Hvdrocarbons ND 24 ppmv 1 OK30003 02-Dec-00 02-Dec-00 DHS LIFT <br /> Benzene ND 0 016 " <br /> Toluene ND 0 013 " <br /> Ethylbenzene ND 0 012 " <br /> Xylenes(total) 0 087 0 012 " <br /> Influent(W012019-02)Air Sampled 01-Dec-00 08 42 Received 01-Dec-00 l4 37 <br /> Purgeabli.Hydrocarbons 48 2 4 ppmv 1 OK30003 03-Dec,00 03 Dec-00 DHS LIFT <br /> Benzene ND 0 016 " <br /> Toluene ND 0 013 " <br /> Ethylbenzene ND 0 012 " <br /> Xylene,,(total) ND 0 012 <br /> Methyl tert-butyl ether ND 0 14 " <br /> SCghlola AnalvtIcal-Walnut Creek The results nt this report apply to the samples analyzed in accordance with the charn <br /> custody documem This analytical report must be reproduced in its,entire <br /> Page 3 of 6 <br />