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r <br /> •:.;: '- - --�lf1.fes' - srrf��r f t.. .,...t .::.- ,...--•- •---'-s `-------------_..._............ <br /> - - <br /> 1 <br /> 819 Striker Ave Ste S <br /> Sacramento,CA 95634 <br /> Sequoia (916)921-9600 <br /> Analytical FAX equoi labs-c 2 1 00 <br /> wunvsequoialabs.com <br /> s <br /> _ Project: Tosco 11195,Lathrop,CA 5306466 <br /> Gettler-Ryan-Petaluma <br /> 1364 N McDowell Blvd,Ste B2 Project Number. NIA Reported: <br /> Petaluma CA,94954 Project Manager: Dave Vossler 07/08/03 09:37 <br /> GasolineTTEXIOxygenates by EPA Method 8260B- Quality Control <br /> Sequoia Analytical- Sacramento <br /> Reporting Spike Source OAREC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch 3070038-EPA 5034E JP/T] <br /> Blank(3070038-BLK1) Prepared&Analyzed:07/02/03 <br /> Benzene ND 0.50 ug/l <br /> Toluene ND 0.50 " <br /> Ethylbeozme ND 0.50 " <br /> Xylenes(total) <br /> ND 0.50 " <br /> Methyl tent-butyl ether ND 0.50 " <br /> Gasoline(C6-C10) <br /> ND 50 " <br /> Surrogate 1,2-DCA-d4 24.2 25.0 97 60-140 <br /> Surrogate: Toluene-d8 24.9 25.0 100 60-140 <br /> Surrogate:4-BFB 23.7 25.0 95 60-140 <br /> Laboratory Control Sample(3070038-BSI) Prepared&Analyzed:07/02/03 <br /> Benzene 11.4 0.50 ugll 13.6 84 70-130 <br /> 73.2 0.50 83.4 88 70-130 <br /> Toluene <br /> Methyl tert-butyl ether 19.6 0.50 22.4 88 60-140 <br /> Gasoline(C6-CIO) 864 50 1100 79 70-130 <br /> Surrogate-1,2-DCA-d4 <br /> 24.9 " 25.0 100 60-140 <br /> Sun-ogate:Toluene-d8 24.9 25.0 100 60-140 <br /> Surrogate-4-BFB 26.0 25,0 104 60-140 <br /> Matrix Spike(3070038-MSI) Source:5306532-02 Prepared&Analyzed:07/02/03 <br /> Benzene 12.0 0.50 ugll 13.6 ND 88 70-130 <br /> Toluene 75.5 0.50 83.4 ND 91 70-130 <br /> Methyl tert-butyl ether 21.1 0.50 22.4 ND 94 60-140 <br /> Gasoline(C6-C10) 891 50 1100 ND Sl 60-140 <br /> Surrogate:1,2-DCA-d4 24-5 25.0 98 - 60-140 <br /> Surrogate:Toluene-d8 24.0 25.0 96 60-140 <br /> Surrogate:4-BFB 25.6 25.0 102 60-140 <br /> Sequoia Analytical-Sacramento The resulls in this l eporl 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 reproduced in its enlorety. <br /> _ J <br /> Page 4 of 6 <br />