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.r 819 Striker Ave Ste 8 <br /> Sequoia Sacramento,CA 95834 <br /> Analytical (916)921-9600 <br /> FAX(916)921-0100 <br /> Gettler-Rvan-Dublin Project Former Unocal 5098,Stockton,CA 5212135 <br /> 6747 Sierra Court,Ste J Project Number N/A Reported <br /> Dublin CA,94568 Project Manager Deanna L Harding 12/27/0214 14 <br /> GasolineWEX1Oxygenates by EPA method 8260B- Quality Control <br /> Sequoia Analytical- Sacramento <br /> Reporting Spike Source %REC RPD <br /> lAnalyte- <br /> Result Limit Units Level Result %REC Limits RPD Lurnt Notes ' <br /> Batch 2120229-EPA 5030B [PIT] <br /> Blank_(;120229-BLKI) Prepared&Analyzed 12/13/02 ---„- <br /> Benzene ND 0 50 ugll <br /> Toluene ND 0 50 " <br /> Ethylbenzene ND 050 it <br /> Xylenes(total) ND 1 0 , <br /> Methyl tert-butyl ether ND 2 0 " <br /> Gasoline(C6-C10) ND 50 " <br /> Surrogate Toluene-d8 260 25 0 104 60-140 <br /> Surrogate 4-BFB 221 250 88 60-140 <br /> Laboratory Control Sample(2120229-BSI) Prepared&Analyzed 12/13/02 - <br /> Benzene 119 - 0 50 um 13 6 87 70-130 <br /> Toluene 724 050 83 4 87 70-130 <br /> Methyl tert-butyl ether 15 4 2 0 224 69 60-140 <br /> Gasoline(C6-C10) 1080 50 1100 98 70-130 <br /> _ E <br /> Surrogate Toluene-d8 266 15 0 106 60-140 <br /> =Surrogate 4-BFB— 13 4--' --"_----25 0—-= 94-==60=140— - --- _ <br /> Laboratory Control Sample(21.20224-BS3) Prepared&Analyzed 12/18/02 <br /> Benzene - - _T 12 7 _0 50ug/1 _ 13 6 - 93_ _70-130 <br /> Toluene 827 0 50 83 4 99 70-130 <br /> Methyl tert-butyl ether 188 20 224 84 60-140 <br /> —Gasoline(C6-C10) JLL 1040 - _ 50 " -_- 1100 y y 95 70-130 <br /> Surrogate Toluene-d8 232 250 93 60-140 , <br /> -Surrogate 4-BFB 21 3 250 89 60-140 - <br /> Matrix Spike(2120229-MSI) Source 5212307-04 Prepared&Analyzed 12/13/02 ' <br /> Benzene 128 050 ugll 13 6 ND 94 70-130 <br /> Toluene 88 9 050 83 4 ND 107 70-130 <br /> Methyl tert-butyl ether 242 20 224 ND 104 60-140 <br /> Gasoline(C6-C10) 1180 50 1100 ND 106 60-140 <br /> I" <br /> - Surrogate Toluene-d8 25 2 25 0 101 60-140 <br /> Sequoia Analyncal-Sacramento The results to 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 /> 82 of 102 <br />