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1551 Industrial Read <br /> San Carlos.6 94070-4111- <br /> 1 Sequoia FpX(650)232-9612 <br /> www sequoialabs corn <br /> WW Analytical <br /> Tosco(5) 6126100 <br /> Gettler-Ryan/Geostrategtes(1) Project Sampled <br /> Pro ect Number Tosco{Unocal)SS#6981 Received. 6/27/00 <br /> 6747 Sierra Court,Suite J 3 7/12!00 <br /> IDublm,CA 94568 Pro ect Mawer Deanna Hardin <br /> Sample Description: PTW 1 <br /> Laboratory Sample Number: L006236-19 <br /> Batch Date Date Specific Method/ Rcportrng <br /> Anal Number P Analyzed Surrogate Luras Lmut Result Units Notes* <br /> Sequoia Analytical-Sao CAKIM <br /> Total Purgeable Hydrocarbons 6-012 -BMX-and MEbVDHSLM 500 <br /> ND ug/l <br /> Purgeable Hydrocarbons as Gasoline 0070026 717100 7/7/00 ND 500 ND " <br /> Benzene n n „ 0 500 0.904 " <br /> Toluene " 0 500 ND " <br /> Ethylbenzene n 0 500 0.955 " <br /> Xylenes(total) Soo ND n " <br /> Mettlyltert-butyl ether 70 0-130 921 <br /> Surrogate a.a,a-Tnfluorotoluene " <br /> Volatile organic Oxygenated Com unds by EPA M tbod 9260 <br /> A 100 ND u9/1 <br /> Tat butyl alcohol 0070031 7110100 7110/00 <br /> 200 4.57 " <br /> Methyl tent-butyl ether " 200 ND " <br /> b1 ether 200 ND " <br /> utyl ether " „ „ 200 ND n <br /> Tert-amyl methyl ether '� " 760-114 110 <br /> Surrogate. 1,2 Drchloroethane-d4 <br /> *Refer to end of report for tW of notes and doniaons <br /> Sequom;Analyhcal-San Carlos <br /> Page 20 of 30 <br />