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Sequoia 819 Sinker 5 <br /> Sacramenttoo,,CCA A 95934 <br /> 34 <br /> ► Analytical (916)921-9600 <br /> FAX(916)921-0100 <br /> vl, www se4tioialabs com <br /> Gettier-Ryan-Dublin Project Former Unocal 2859,Stockton,CA S211346 <br /> 6747 Sierra 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 /> QA ($211346-01)Water Sampled 11/07/02 00 00 Received 11/12/02 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 0 56 <br /> Ethylbenzene ND 050 " <br /> Xyienes(total) ND 050 <br /> Methyl tert-butyl ether ND 2 5 " <br /> Surrogate a,a a-Trifluorotoluene 89% 60-140 " <br /> MW-1 (5211346-02)Water Sampled 11/07/02 13 56 Received 11/12/02 09 45 <br /> Purgeabie Hydrocarbons ND 50 ugll 1 2110288 11/19/02 11/20/02 DHS LUFT <br /> Benzene ND 0 50 <br /> _Toluene ND 050 " <br /> Ethylbenzene - ND 050 " <br /> Xylenes(total) ND 050 " <br /> Methyl terl-butyl ether - ND 2 5 <br /> Suri ogale a a,a-Trifluorotoluene 86% 60-140 <br /> MW-2 (S211346-03)Water Sampled 11/09/02 16 50 Received 11/12/02 09 45 <br /> Purgeable Hydrocarbons 18000 5000 ug/l 100 2110288 11/19/02 11/20/02 DHS LUFT - <br /> Benzene 360 - 50 I. <br />__Toluene_— 280050 " <br /> Ethylbenzene 960 50 " <br />_Xylenes_(total)r ---4400-50 <br /> -__ <br /> —------ --------- -----------------—--- <br /> Methyl tert-butyl ether ND 250 " <br /> l=-Surrogate a a,a-Trifluorotoluene 95% - --60-140 <br /> report Sequoia Analyttcat - Sacramento The results in this er• t•rrly to the samples analyzed in accordance with the chem of <br /> custody document Unless otherwise stated results are reported on a wet weight basis <br /> This analytical report must be reproduced to its entirety <br /> Page 3 of 22 <br />