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te <br /> Sequoia 61amenterAve583's <br /> w Sacramento C2 95834 <br /> (9l6}92i 4600 <br /> Analytical FAX equoi labs com <br /> Gettler-Ryan-Dublin Project Former Unocal 5098,Stockton,CA 5308091 ' <br /> 6747 Sierra Court, Ste J Project Number N/A Reported <br /> Dublin CA,94568 -Project Manager Deanna L Harding - -- 08/20/03 16 56 <br /> Gasoiine\BTEXIOxygenates by EPA method 8260B -Quality Control <br /> Sequoia Analytical - Sacramento <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Lima Units Level Result %REC Limits RPD Limit Notes <br /> Batch 3080206-EPA 5030E [P/TJ <br /> Matrix Spike(3080206-MSI) Source S308151-07 Prepared&Analyzed 08/18/03 <br /> Benzene 126 050 ug/l 160 ND 79 70-130 <br /> Toluene 652 050 742 ND 88 70-130 , <br /> Methyl tert-butyl ether 294 20 248 5 1 48 60-140 <br /> Surrogate 1 1-DCA-d4 229 250 91 60-140 <br /> Surrogate Toluene-d8 190 250 76 60-140 <br /> Surrogate 4-BFB 230 250 92 60-140 '! <br /> Matrix Spike Du (3080206-MSB]) Source S308151-07 Prepared&Analyzed 08/18/03 <br /> Benzene 12 4 - 0 50 ug/l 16 0 ND -78 70-130 1 2 25 <br /> Toluene 63 0 0 50 742 ND 85 70-130 3 25 <br /> Methyl tent-butyl ether 348 2 0 24 8 5 1 120 60-140 17 25 <br /> Surrogate 1 2-DCA-d4 25 3 250 101 60-140 <br /> Sur rogaie Toluene-d8 177 15 0 71 60-140 <br /> Suri ogate 4-BFB 228 250 91 60-140 <br /> Batch 3080240-EPA 5030B [PIT] <br /> _Blank(3080240-BL KI) Prepared 08/18/03 Analyzed 08/19/03 <br /> .Blank <br /> ND 050 ug/l <br /> _ Toluene ND-. 050 " <br /> ` EthylbenzeneT � T ND � � 050 `"�- --- --- - _- - -- - - - --- -- -- <br /> Xylenes(total) - _ - ND - 0 50 <br /> Methyl tert-butyl ether ND 20 <br /> Surrogate 1,2-DCA-d4 270 250 108 60-140 <br /> . .Surrogate-Toluene-d8 24 4 25 0- _-- - 98 -z 60-140- �- <br /> Surrogate 4-BFB 26 i 25 0 107 60-140 ' <br /> Sequoia Analytical - Sacramento The results to this report apply to the samples analyzed in accordance with the chain of <br /> custody document Unless otherwise stated,results are reported on a wet weight basis <br /> This analytical report must be rep?oduced in its entirety <br /> Page 100 of 117 <br />