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819 Striker Ave Ste 8 <br /> Sequoia Sacramento,CA 95834 <br /> (916)921-9600 <br /> Analytical <br /> FAX(916)921-01OD <br /> Gettler-Ryan-Dublin Project Former Unocal 0187,Stockton,CA S211332 <br /> 6747 Sierra Court,Ste J Project Number NIA Reported <br /> Dublin CA,94568 Project Manager Deanna L ]larding 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 /> lAnalyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch 2110262-EPA 5030B(PIT) <br /> Blank(2110262-BLK1) Prepared&Analyzed 11/18/02 <br /> Ethylbenzene ND 0 50 119/1 <br /> Xylenes(total) ND 050 " <br /> Methyl tert-butyl ether ND 2 5 " <br /> Surrogate a,a,a-Tri luorotoluene 990 11100 99 60-140 <br /> Blank(2110262-BLK2) Prepared&Analyzed 11/19/02 <br /> Purgeable Hydrocarbons ND 50 119/1 <br /> Benzene ND 050 " <br /> Toluene ND 050 " <br /> Ethylbenzene ND 050 " <br /> -Xylenes(total) - w - ND 0 50 <br /> Methyl tert-butyl ether ND 2 5 <br /> Surrogate a a a-Tri luorotoluene 791 or 100 79 60-140 <br />__Blank(2110262-BLK3) Prepared&Analyzed 11/20/02 <br /> Purgeable Hydrocarbons ND 50 ugJl <br />—Benzene----- _ --. ND - - 0 50—_" - - - <br /> Toluene���� ����- ND �^ 050 '• T.T. _� �_ _ � _�_ _� ____ - <br />- -=Ethylbenzene=, --- ---�----ND =-050 <br /> Xylenes(total) ND 050 " <br /> Methyl tert-butyl ether ND 2 5 " <br /> Surrogate a a,a-Trifluorotoluene 831 It100 83 60-140 <br /> Laboratory Control Sample(2170262-BSl) Prepared&Analyzed 11/18/02 <br /> Benzene - 9 18 050 ug/l 100 92 70-130 <br /> Toluene 9 10 050 Wo 91 70-130 <br /> Elhylbenzene 9 12 050 100 91 70-130 <br /> Xylenes(total) 27 8 0 50 FF300 93 70-130 <br /> Methyl ten-butyl ether 9 35 2 5 100 94 70-130 <br /> Surrogate a,a,a-Tri luorotoluene 895 IF 100 90 60-140 <br /> Sequoia Analytical-Sacramento The results in this report apply to the samples analyzed in accordance with the ch <br /> of custody document Unless otherwise stated,results are reported an a wet weight <br /> basis This analytical report must be reproduced to its entirety <br /> 30 of 41 <br />