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Sequoia Walnut Creek,CA 94598 <br /> (925)988-4600 <br /> Analytical FAX(925)988-9673 <br /> Iu <br /> ttlerRyan,Inc -Dublin Project Unocal <br /> 7 Sierra Court State! Project Number Unocal SS#2859 Reported <br /> blin CA,94568 Project Manager Deanna L Harding 08-Sep-99 18 13 <br /> Total Purgeable Hydrocarbons (C&C12), BTEX and MTBE by DHS LUFT <br /> Sequoia Analytical -Walnut Creek <br /> Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Nates <br /> MW-7(W908426-04)Water Sampled 19-Aug-99 09 46 Received 20-Aug-99 17 00 <br /> Purgeable Hydrocarbons ND 50 u0 1 9101011 31-Aug-99 31-Aug-99 DHS LUFr <br /> Benzene ND 050 <br /> Toluene ND 050 ^ " <br /> Ethylbenzene ND 050 <br /> Xylenes(total) ND 050 <br /> Methyl tert butyl ether ND 25 " <br /> Surrogate a aa-Tnfluorotoluene 933% 70-130 " <br /> MW-8(W908426-05)Water Sampled 19-Aug-99 10 47 Received 20-Aug-99 17 00 <br /> Purgeable Hydrocarbons ND 50 ug/1 1 9I01011 31-Aug-99 31-Aug-99 DHS LUFT <br /> Benzene ND 050 <br /> Toluene ND 050 " <br /> Ethylbenzene ND 050 <br /> Xylenes(total) ND 050 <br /> Nfethvl tert-but-,I ether ND 25 " <br /> gate a a a-Tnfluorotoluene 96 7% 70-130 <br /> s -9(W908126-06)Water Sampled 19-Aug-99 11 16 Received 20-Aug-99 1700 D-06 <br /> Purgeable Hydrocarbons 92 50 ug/l l 9101011 31-Aug-99 31-Aug-99 DHS LUFF <br /> Benzene ND 030 " <br /> Toluene ND 050 " <br /> Ethylbenzene ND 050 <br /> Xylenes(tol.il) ND 050 " <br /> Methyl tort-butvl ether ND 25 " <br /> Surrogate a a a-Trriluorotoluene 103 % 70-130 " <br /> Sequoia Analytical-Walnut Creek The results in this irport apply to the samples analy ed i n accordance with the clean of <br /> 0" curtor*document Tins anulyncd report must he reproduced in r d eWnrtry <br /> Juli eg ley Project Mauf a Page 3 of 5 <br />