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Sequoia t Cr N ��Lane <br /> Walnut Ueek CA 94598 <br /> fM)988-9600 <br /> Analytical <br /> FAX(925)Sln <br /> www sequoialabs abs coin <br /> co <br /> w <br /> Gettler Ryan,Inc -Dublin Project Tosco <br /> 6747 Sierra Court Suite J Project Number Tosco#4409 Reported <br /> Dublin CA,94568 Project Manager Deanna L Harding 06-Feb-01 17 21 <br /> Volatile Organic Compounds by EPA Method 8260B <br /> Sequoia Analytical -Walnut Creek <br /> Reporting <br /> Analyte Result Lunit Units Dilution Batch Prepared Analyzed Method Notes <br /> MW4(W101522-05)Water Sampled 22-Jan-01 12 15 Received 23,Jan-01 16 00 <br /> Ethanol ND 500 ug/1 1 1A24014 24-Jan-01 24-Jan-01 EPA 8260B <br /> tert Butyl alcohol ND 50 IF IF <br /> Methyl tent-butyl ether 11 20 <br /> Di-isopropyl ether ND 20 » IF 11 <br /> Ethyl Cert butyl ether ND 20 IF » » " <br /> tmt Amyl methyl ether ND 20 IF " <br /> 1,2-Dlchloroethane ND 20 <br /> Ethylene dibramlde ND 20 » » » » <br /> Surrogate Dibromofluoromedume 110% 50-150 IF " <br /> Surrogate 1,1 Dichloroethane-d4 982% 50-150 IF IF " <br /> MW-5(W 1015224)6)Water Sampled 22-Jan-01 13 22 Received 23-0an-01 16 00 <br /> Ethanol ND 500 ug/1 1 1A24014 24-Jan-01 24-Jan-01 EPA 8260B <br /> tert Butyl alcohol ND 50 " " IF <br /> ltert-butyl ether ND 20 IF <br /> " rc » n <br /> DVMpropyl ether ND 20 » n IF n <br /> Ethyl tert butyl ether ND 20 » " » IF » <br /> tert-Amyl methyl ether ND 20 <br /> 1,2-Dichloroethane ND 20 <br /> Ethylene dibromrde ND 20 <br /> Surrogate Dtbromofluoromethane 104% 50-150 IF <br /> Surrogate 1,2 Dzchloroethane-l4 964% 50-150 IF " IF <br /> MW-6(W101522-07)Water Sampled 22-0an-01 15 32 Received 23-Jan-01 16 00 <br /> Ethanol ND 500 ug/1 1 1 A24014 24-Jan-01 25-Jan-01 EPA 9260B <br /> tert-Butyl alcohol ND 50 IF ^ " " IF <br /> Methyl tert-butyl ether 22 20 IF IF IF IF <br /> Di-isopropyl ether ND 20 IF » » IF » <br /> Ethyl tert butyl ether ND 20 » IF » » » IF <br /> tert Amyl methyl ether ND 20 IF " " IF <br /> 1,2-Dichloroethane ND 20 ^ ^ ^ <br /> Ethylene dibroraide ND 20 n rc IF » „ <br /> Surrogate Dibromofluoromedume 123% 50-150 " IF " <br /> Surrogate 1,2-Dichloroethane-d4 110% 50-150 IF IF IF <br /> la Analytical-Walnut Creek The results in tins report apply to the samples analyzed in accordance with the churn of <br /> custody document. This analyircal report must be reproduced in its entirety <br /> Page 4 of 12 <br />