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819 SentAve Ste 8 <br /> Sequoia Sacramento,CA 95834 <br /> i!�) (916)921-9600 <br /> Analytical FAX(916)921.0100 <br /> www sequoialabs com <br /> Ryan-Dublin Project Fortner Unocal 2859,Stockton,CA 5211346 <br /> 6 Sterna Court,Ste J Project Number N/A Reported <br /> Dublin CA,94568 Project Manager Deanna L Harding 12/04/02 14 47 <br /> Total Purgeable Hydrocarbon, BTEX and MTBE by DHS LUFT <br /> Sequoia Analytical - Sacramento <br /> Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> MW-3 (5211346-04)Water Sampled 11/07/02 15 57 Received 11/12102 09 45 <br /> Purgeable Hydrocarbons ND 50 ug/l 1 2110288 11/19/02 11/20/02 DHS LUFT <br /> Benzene ND 050 " <br /> Toluene ND 050 " <br /> Ethylbenzene ND 050 " <br /> Xylenes(total) ND 050 <br /> Methyl tent-butyl ether ND 2 5 " <br /> Surrogate a,a,a-Trtfluorotoluene 83 % 60-140 " <br /> MW-4 S211346-05 Mater Sampled 11109/0209 52 Received 11/12/02 09 45 <br /> Purgeable Hydrocarbons ND 50 ugA 1 2110288 11/21/02 11/21/02 DHS LUFT <br /> Benzene ND 050 " <br /> Toluene ND 0 50 " <br /> Ethylbenzene ND 0 50 " <br /> Xylenes(total) ND 050 " <br /> Methyl tert-butyl ether ND 2 5 " <br /> Sto a,a a-Trifluorotoluene 101 % 60-140 <br /> " <br /> MVIS119 -5{S211346-06)Water Sampled 11/09/02 11 56 Received 11/12/02 09 45 „-- <br /> Purgeable Hydrocarbons ND 50 ug/l 1 2110288 11/21/02 11/21/02 DHS LUFT <br /> Benzene ND 050 f <br /> Toluene ND 050 ” <br /> Ethylbenzene ND 050 <br /> Xylenes(total) ND 0 50 " <br /> Methyl tent-butyl ether ND 2 5 ' <br /> Surrogate a a,a-Trifluorotoluene 88% 60-140 " <br /> I <br /> 1a Analytical - Sacramento The results in this report apply to the samples analyzed in accordance with the char of <br /> custody document Unless otherwise stated results are reported on a wet weight basis <br /> This analytical report must be reproduced in its entirety <br /> Page 4 of 22 <br />