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819 Striker Ave Ste 8 <br /> Sequoia Sacramento,CA 95834 <br /> (916)921-9600 <br /> Analytical FAX(916)921-0100 <br /> Ryan-Dublin Protect Former Unocal 0187,Stockton,CA 5211332 <br /> 6 terra Court,Ste J Project Number N/A Reported <br /> Dublin CA,94568 Project Manager Deanna L Harding 12/27/02 17 49 <br /> Total Purgeable Hydrocarbon, BTEX and MTBE by DHS LUFT-Quality Control <br /> Sequoia Analytical - Sacramento <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch 2110219-EPA 5030B(PIT) <br /> Laboratory Control Sample(2110219-BS7) Prepared&Anal zed 11/20/02 <br /> Ethylbenzene 8 83 050 1.19/1 300 88 70-130 <br /> Xylenes(total) 27 1 050 300 90 70-130 <br /> Methyl tert-butyl ether 950 25 100 95 70-130 <br /> Surrogate a,a a-Trifluorotoluene 838 100 84 60-140 <br /> Matrix Spike(21 10219-MSI) Source 5211178-01 Prepared 11/14/02 Analyzed 11/15/02 <br /> Benzene 109 050 118/1 100 1 4 95 60-140 <br /> Toluene 9 42 050 100 ND 94 60-140 <br /> Ethylbenzene 945 050 100 ND 94 60-140 <br /> Xylenes(total) 28 7 050 300 ND 96 60-140 <br /> Methyl tert-butyl ether 196 25 Wo 10 96 60-140 <br /> Su ate a,a,a-Tri luorotoluene 100 100 100 60-140 <br /> Matrix Spike Du (2110219-MSDI) Source S211178-01 Prepared 11/14/02 Analyzed 11/15/02 <br /> Benzene 106 050 1.19/1 100 1 4 92 60-140 3 25 <br /> Toluene 9 14 050 100 ND 91 60-140 3 25 <br /> Ethylbenzene 9 14 050 100 ND 91 60-140 3 25 <br /> Xylenes(total) 27 8 050 300 ND 93 60-140 3 25 <br /> Batch 2110237-EPA 5030B PIT <br /> Blank(21]0237-BLK1) Prepared&Ana! zed 11/15/02 <br /> Purgeable Hydrocarbons ND 50 ug/l <br /> Benzene ND 0 50 " <br /> Toluene ND 050 " <br /> Ethylbenzene ND 0 50 " <br /> Xylenes(total) ND 0 50 " <br /> Methyl tert-butyl ether ND 2 5 " <br /> Surrogate a,a,a-Trifluorotoluene J05 100 105 60-140 <br /> to Analytical-Sacramento The results in this report apply to the samples analyzed in accordance with the chain <br /> of custody document Unless otherwise stated results are reported on a wet weight <br /> basis This analytical report must be reproduced in its entirety <br /> 27 of 41 <br />