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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 /> Rvan-Dublin Project Former Unocal 0187,Stockton,CA S211332 <br /> 67 Sierra Court,Ste 3 Protect 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 LUPI'- Quality Control <br /> Sequoia Analytical - Sacramento <br /> Reporting Spike Source %REC RPD <br /> lAnalyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch 2110219-EPA 5030B PIT <br /> Blank(2110219-BLK1) Prepared&Analyzed 11/14/02 <br /> Purgeable Hydrocarbons ND 50 USA <br /> Benzene ND 050 " <br /> Toluene ND 050 " <br /> Ethylbenzene ND 0 50 <br /> Xylenes(total) ND 050 " <br /> Methyl tert-butyl ether ND 2 5 " <br /> Surrogate aa a-Trifluorotoluene 107 100 107 60-140 <br /> Blank(2110219-BLK2) Prepared&Analyzed 11/15/02 <br /> Purgeable Hydrocarbons ND 50 u911 <br /> Benzene ND 050 " <br /> T� ND 0 50 <br /> Et y enzene ND 050 <br /> Xylenes(total) ND 050 " <br /> Methyl Cert-butyl ether ND 2 5 " <br /> Surrogate a a,a-TriJluorotoluene 105 100 105 60-140 <br /> Blank(2110219-BLK4) _ Prepared&Analyzed 11/19/02 <br /> Purgeable Hydrocarbons �^ ND 50 ugA <br /> Benzene ND 050 " <br /> Toluene ND 050 " <br /> Ethylbenzene ND 0 50 " <br /> Xylenes(total) ND 050 " <br /> Methyl tert-butyl ether ND 2 5 " <br /> Surrogate a a,a-Trii luorotoluene 7 91 100 79 60-140 <br /> Blank 2110219-BLK5Prepared&Ana] zed 11/20/02 <br /> Purgeable Hydrocarbons ND 50 ugA <br /> Benzene ND 0 50 " <br /> Toluene ND 050 " <br /> Ethylbenzene ND 0 50 " <br /> Xylenes(total) ND 050 " <br /> is Analytical-Sacramento The results in this i eport 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 /> 2-5 of 41 <br />