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Sequoia 919 minento,CA 59 4 <br /> SacramenW,CA 95634 <br /> iW Analytical (916)921-9600 <br /> FAX(916)921 0140 <br /> www sequoialabs coin <br /> Geological Technics,Inc Project Valley Wholesale Drug Co 5408576 <br /> 1101 7th Street Project Number 989 2 Reported � <br /> ' Modesto CA,95354 Project Manager Enc Price 09/09/04 16 13 <br /> GasormeWEMOxygenates by EPA method 8260B-Quality Control <br /> ' Sequoia Analytical-Sacramento <br /> Reporting Spike Source "/"REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Linut Notes <br /> ' Batch 4080482-EPA 5030E[PIT] <br /> Blank 4080482-BLK3) Prepared,09/01/04 Ant09/02/04 <br /> Ethanol ND 50 ug/l <br /> Ten-butyl alcohol ND 5 0 <br /> Methyl tert-butyl ether ND 050 <br /> Di-isopropyl ether ND 0 50 <br /> ' Ethyl tert-butyl ether ND 050 " <br /> Tert-amyl methyl ether ND 050 " <br /> 1,2-Dichloroethane ND 050 " <br /> 1,2-Dibromoethane(EDB) ND 050 " <br /> ' Benzene ND 0 50 " <br /> Ethylbenzene ND 0 50 " <br /> Toluene ND 0 50 " <br /> ylenes(total) ND 050 " <br /> line Range Organics(C4-C12) 1VI) 50 " <br /> Surrogate Toluene-d8 914 10 0 92 60-140 <br /> ' Surrogate 4-BFB 9 15 100 92 60-140 <br /> Surrogate 1,2-DCA44 922 100 92 60-140 <br /> Laboratory Control Sample 4080482-BSl Prepared&Analyzed 08/31/04 <br /> 1 Methyl tert-butyl ether 9 67 0 50 ug/1 864 112 60-140 <br /> Benzene 6 03 050 5 36 112 70-130 <br /> Toluene 35 0 0 50 303 116 70-130 <br /> Gasoline Range Organics(C4-C 12) 461 50 440 105 70-130 <br /> ' Surrogate Toluene-d8 948 " 10 0 95 60-140 <br /> Surrogate 4-BFB 886 160 89 60-140 <br /> Surrogate 12-DCti-d4 993 100 99 60-140 <br /> ' Laborato Control Sample 4080482-BS2 Prepared&Anal 09/01/04 <br /> Methyl tert-butyl ether 9 25 0 50 ug/1 8 64 107 60-140 <br /> Benzene 5 50 0 50 5 36 103 70-130 <br /> Toluene 38 9 050 303 128 70-130 <br /> ' Gasoline Range Organics(C4-C12) 492 50 440 1 t2 70-130 <br /> Surrogate Toluene-d8 119 10 0 119 60-140 <br /> Surrogate 4-BFB 9 30 " 10 0 93 60-140 <br /> ' Surrogate 1,2-DCA-d4 823 100 82 60-140 <br /> Sequoia Analytical-Sacramento The results in this report apply to the samples analyzed in accordance with the chain <br /> ofcustody document Unless otherwise stated,results are reported on a wet weight <br /> basis This analytical report must be reproduced in its entirety <br /> Page 12 of I5 <br />