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----------,. _ ......__.----- _ a_.._.... _____. _ ..,.......�»s.».�»______. .______________sem___=.________l f..-......lrrri%/lll/f1 ____.S • ..._.____sst� <br /> a) (916)819 Striker Ave Ste 8 <br /> Sequoia Sacramento,CA 95834 <br /> 921-9600 <br /> NAO Analytical FAX(916)92 1-0 100 <br /> www.sequaialabs.com <br /> Getter-Ryan-Petaluma Project: Tosco 11195,Lathrop,CA 5304543 <br /> 1364 N McDowell Blvd.Ste B2 Project Number: NIA Reported: <br /> Petaluma CA,94954 Project MEaoager: Dave Vossler 05/06/03 17:59 <br /> Gas oline\BTEXIOxygenates by EPA method 8260B- Quality Control <br /> Sequoia Analytical- Sacramento <br /> Reporting Spike Source %REG RPD <br /> Analyte Result Limit Units Level Result %RFC Limits RPD Limit Notes <br /> Batch 3050030-EPA 5030E [PITT <br /> Matrix Spike(3050030-MSI) Source:5304545-02 Prepared&Analyzed: 05102!03 <br /> Benzene 2.97 0.50 ug/l 2.72 ND 109 70-130 <br /> Toluene 16.8 0.50 16.7 ND 101 70-130 <br /> Methyl tert-butyl ether 7.13 0.50 4.48 2.1 112 60-140 <br /> Gasoline(C6-C10) 221 50 220 ND 100 60-140 <br /> Surarogale:1,2-DCA-d4 27.9 25.0 112 60-140 <br /> Surrogule:Toluene-d8 25.2 25.0 101 60-140 <br /> Sio-rogaler 4-BFB 22.3 " 25.0 89 60-140 <br /> Matrix Spike Dup(3050030-MSD1) Source:5304545-02 Prepared&Analyzed:05/02/03 <br /> Benzene 2.88 0.50 ugll 2.72 ND 106 70-130 3 25 <br /> Toluene 16.4 0.50 16.7 ND 98 70-130 2 25 <br /> Methyl tett-butyl ether 6.98 0.50 4,48 2.1 109 60-I40 2 25 <br /> Gasoline(C6-C 10) 209 50 220 ND 95 60-140 6 25 <br /> Sto r ogale:1,;?-DCA-d4 27.8 25.0 111 60-140 <br /> Surrogate:Toluene-d8 25.8 25.0 103 60-140 <br /> Surrogale:4-BFB 22.6 25.0 90 60-140 <br /> I <br /> I <br /> I <br /> I <br /> Sequoia Analytical-Sacramento The results in 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 reproduced in its entirety. <br /> f <br /> Page 6 of 7 <br />