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819 Striker Avenue Suite 8 <br /> 4 4D Sequoia Sacramento CA 95834 <br /> (916)921-9600 <br /> SWO Analytical FAX w equo labs2 1 corn <br /> Gettler-Ryan-Dublin Project Unocal 0187 Stockton CA <br /> 6747 Sierra Court, Ste J Project Number Miner St Reported <br /> Dublin CA 94568 Project Manager P LeCheminant 01/09/01 16 14 <br /> Total Purgeable Hydrocarbons (C6-C12), BTEX and MTBE by DHS LUFT - Quality Control <br /> Sequoia Analytical - Sacramento <br /> Reporting Spike Source %ITEC RPD <br /> Analyte Result Limn Units Level Result %REC Limits RPD Limit Notes <br /> Batch 1010080- EPA 50306(P/T) <br /> Blank(1010080-BLK1) Prepared&Analyzed 01/09/01 <br /> Purgeable Hydrocarbons ND 500 ug/1 <br /> Benzene ND 0 500 " <br /> Toluene ND 0 500 " <br /> Ethylbenzene ND 0 500 " <br /> Xylenes(total) ND 0 500 " <br /> Methyl tert-butyl ether ND 2 50 <br /> Surrogate a a a-Trifluorotoluene 825 100 825 60-140 <br /> LCS(1010080-BS1) Prepared&Analyzed 01/09/01 <br /> Benzene 950 0 500 ug/l 10 0 950 70-130 <br /> 4buene 9 50 0 500 100 95 0 70-130 <br /> ylbenzene 9 61 0 500 100 96 1 70-130 <br /> Xylenes(total) 28 5 0 500 300 95 0 70-130 <br /> Methyl tert-butyl ether 878 250 100 87 8 70-130 <br /> Surrogate a a a-Triuorotoluene 826 100 826 60-140 <br /> "Sequoia Analytical- Sacramento The results in this report apply to the samples analyzed in accordance with the chain of <br /> custody document This analytical report must be reproduced in its entirety <br /> Page 5 of 6 <br />