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1551 Industrial Road <br /> San Carlos,CA 94070-4111 <br /> Sequoia (650)232-9602 <br /> 4 a- <br /> FAX(650)Z32A6t2 <br /> Analytical www se4uofalabs coin <br /> Gettler-ItyanlGeostrategtes(1) Projecr Tosco(*ZZ Reported <br /> 6747 Sierra Court,Suite J Project Number' Tosco(Unocal)SS#6981 <br /> Dublin CA,94568 Project Manager Deanna Harding 01/11/01 13 54 <br /> Volatile Organic Oxygenated Compounds by EPA Method 8260B <br /> Sequoia Analytical-San Carlos <br /> Reportin8Notes <br /> Analyte Result l�tit Units Dilution Batch Prepsrod Analyzed Method <br /> MW-1(L012210-02)Water Sampled 12/27/00 12:00 Received 12/27/0017:55 <br /> Ethanol ND 1000 ugll 1 1010006 01/03/01 01/03/01 EPA 82608 <br /> Tert-butyl alcohol ND 100 <br /> Methyl tort-butyl ether ND 200 <br /> Di-isopropyl ether ND 200 <br /> Ethyl tert-butyl ether S 200 <br /> D N 200 <br /> Tat-amyl methyl ether " <br /> Surrogate 1,1-Dichloroethane-d4 970% 76-114 <br /> MW-2(L012210-03)Water Sampled 1212710014.14 Received-12/27/0017:55 <br /> 1 l 010006 01/03/01 01/03/01 EPA 82608 <br /> Ethanol ND 1000 ug/l <br /> Tertbutyl alcohol ND 100 <br /> 2 00 <br /> Methyl tett-butyl ether 78.5 <br /> 1 ether ND 200 <br /> - tat-butyl ether ND <br /> amyl methyl ether ND 2 00 <br /> Surrogate 1,2 Dichlomethane-d4 104% 76-114 <br /> MW-4(1,012210.04)Water Sampled:1212610016.33 Received:1212710017.55 <br /> Ethanol ND 1000 119/1 1 1010006 01/03/01 Ol/03/01 EPA 82608 <br /> ND 100 <br /> Tat-butyl alcohol <br /> 1�1D 200 " <br /> Methyl tcrt-butyl ether <br /> ND 200 " <br /> Di-tsopropyl ether <br /> Ethyl tertbutyl ether ND 200 <br /> " <br /> Tert-amND 200 <br /> methyl ether <br /> Surrogate 1,2 Dtchloroethane-d4 974% 76-114 " <br /> uOlThe remits in this report apply to the samples analyzed in accordance with the chain of <br /> a pnatyaC81-San Carlos <br /> custody document Thus analytical report must be reproduced in Its entirety <br /> Page 8 of 27 <br />