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404 N Wlget lane <br /> Sequoia Walnut Geek,CA 945% <br /> (925)988-9600 <br /> Analytical wFAx(925)988-9473 <br /> ww sequolalabalabs com <br /> Gettler Ryan,Inc -Dublin Project Tosco <br /> 6747 Sierra Court Suite J Project Number Tosca#6981 Reported <br /> Dublin CA,94568 _ Project Manager Deanna L Harding20-Oct-00 15.26 _ <br /> Volatile Organic Compounds by EPA Method 8260B <br /> Sequoia Analytical -Walnut Creek <br /> Reporting <br /> Analyte Result Limit Uruts Dilution Batch Prepared Analyzed Method Notes <br /> MW-14(W009589-11)Water Sampled 22-Sep-00 16 13 Received 25-Sep-00 15 30 <br /> Ethanol ND 500 ug/1 1 0JO9013 03-Oct-00 03-Oct-M EPA 8260B <br /> tert-Butyl alcohol ND 50 <br /> Methyl tett butyl ether 250 20 <br /> Di-isopropyl ether ND 20 <br /> Ethyl tert-butyl ether ND 20 <br /> tert-Amyl methyl ether ND 20 <br /> 1,2-Dichloroethane 10 20 <br /> Ethylene dibromide ND 20 <br /> Surrogate Dibromofluoromediane 100% 50-150 <br /> Surrogate 1,2-Dichloroedw:ed4 940% 50-150 <br /> MW-15(W009589-12)Water Sampled 22-0ep-00 15 40 Received 25-Sep-00 15 30 <br /> Ethanol ND 500 %4 1 0JO9013 03-04.00 03-Oct-00 EPA 8260E <br /> tert-Butyl alcohol ND 50 ^ ^ n n « n <br /> Methyl tertbutyl ether 14 20 ^ ^ ^ ^ ^ • <br /> D>- propyl ether ND 20 <br /> Ethyl tert-butyl ether ND 20 <br /> tert-Amyl methyl ether ND 20 <br /> 1,2 Dtchloroethme ND 20 <br /> Ethylene dibromide ND 20 <br /> Surrogate Dibromofluoromethane 102% 50-150 " <br /> Surrogate 1,2-Dschloroethane-d4 940% 50-150 " <br /> MW-16(W009589-13)Water Sampled 22-Sep-00 12 15 Received 25-Sep-00 15 30 <br /> Ethanol ND 500 ug/1 1 0JO9013 03-0c&00 04Oct-00 EPA 8260B <br /> tert-Butyl alcohol ND 50 ^ n <br /> Methyl tert-butyl ether 68 20 ^ ^ ^ « <br /> Di-isopropyl ether ND 20 « n n n n n <br /> Ethyl tert-butyl <br /> ether ND 20 <br /> tent Amyl methyl ether jam} 20 n n n n n n <br /> 1,2 Dichloroethane 30 20 ^ ^ ^ « <br /> Ethylene dibromide ND 20 <br /> Surrogate Dabromofluoromethane 106% 50-150 <br /> Surrogate 1,2-Dtchloroethaned4 960% 50-150 <br /> Semiola Analytical-Walnut Creek The results an flus report apply to the samples mualyled in accordance with the char <br /> custody document Dus analytical report mast be nepnoduoed m its sna,e <br /> Page 11 of 23 <br />