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k <br /> Sequoia aoa N ,CA lane <br /> 4 Walnut Creek,CA 94598 <br /> (925)988-9600 <br /> 4cp 0 <br /> !D. Analytical FAX(925)988-9673 <br /> Gettler Ryan,lnc -Dublin Project Tosco <br /> 6747 Sierra Court Suite J Project Number Tosco 4 6981 Reported <br /> Dublin CA,94568- - -- - - - --Project Manager Deanna L Harding =_ _ -- _—-=10-Feb-0O 11 00 - <br /> Volatile Organic Compounds by EPA Method 8260A <br /> Sequoia Analytical -Walnut Creek <br /> Reporting <br /> Analyte Result Luurt Units Dilution Batch Prepared Analyzed Method Notes <br /> MW-5(W001654-05)Water Sampled 27-Jan-00 16 10 Received 28-Jan-0018 20 <br /> tert-Butyl alcohol ND 100 ug/1 1 OB02018 01-Feb-00 01-Feb-00 EPA 8260A <br /> Methyl tert-butyl ether ND 20 If 1. " <br /> Dr-isopropyl ether ND 20 <br /> Ethyl tert-butyl ether ND 20 " <br /> tert-Amyl methyl ether ND 20 " <br /> Surrogate Dibrontofluoromethane 102% 50-150 " <br /> Surrogate 1,1-Djch1o?oerhane-d4 114% 50-150 " <br /> MW-6(W001654-06)Water Sampled 27-Jan-00 16 55 Received 2Wan-0018 20 <br /> tert-Butyl alcohol ND 100 ug/1 1 0802018 01-Feb-00 01-Fetr00 EPA 8260A <br /> Methyl tent-butyl ether ND 20 " <br /> Di-isopropyl ether ND 20 •' " " <br /> Ethyl tert-butyl ether ND 20 " <br /> tert-Amyl methyl ether ND 20 " " Awk <br /> Sunogate Dibromofluorontethane 980% 50-150 " <br /> Surrogate 1 2-Dtchloroethatre-d4 114% 50-150 <br /> MW-7(WO01654-07)Water Sampled 28-Jan-00 13 00 Received 28-Jon-00 18 20 <br /> tert-Butyl alcohol ND 100 ug/1 1 OB02018 01-Feb-00 01-Feb-0O EPA 8260A <br /> Methyl tert-butyl ether 210 10 5 n 0246-00 " <br /> Di-isopropyl ether ND 20 1 O1-Feb-0O " <br /> Ethyl tert-butyl ether ND 20 " <br /> tert-Amyl methyl ether ND 20 " <br /> Surrogate Dtbrontofluotomethane 104% 50-150 <br /> Sunagate 1,2-Dtchloroeihane-d4 116% 50-150 " <br /> Sequoia Analytical-Walnut Creek The results m the report apply to the samples analysed m accoidance with the than ofeu <br /> docuMen[Ths onalyacarl repot must be re woduaadin its enc <br /> / Aiatt B Kemp,Laboratory Director Page 9 of 20 <br />