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Poad <br /> Sequoia an Carlos Industrial <br /> (] {, San (650 23 -9600 <br /> .Analytical (650)232-9600 <br /> FAX(650)232-9612 <br /> wwryv seq=alabs com <br /> Gettler-Ryan/Geostrategies(I) Project Unocal(4) <br /> 6747 Sierra Court, Suite J Project Number Former Unocal#5098, Stockton Reported <br /> Dublin CA,94568 - Project Manager Deanna Harding 07/01/02 07 46 <br /> Volatile Organic Oxygenated Compounds by EPA Method 8260B <br /> Sequoia Analytical- San Carlos <br /> _ Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> MW-17(L206021-20)Water Sampled 06/09/0211 35 Received-06/11/02 18.05 1 <br /> _ <br /> 1,2-Dibromoethane Y r ND - _ 10 ug/l 1 20600211 -06/13102 06/14/02 EPA 82608 <br /> 1,2-Dichloroethane ND 10 <br /> Di-isopropyl ether ND 10 " <br /> Ethyl tert-butyl ether ND 10 <br /> Methyl tent-butyl ether ND 10 ^ <br /> Tert-amyl methyl ether ND 10 <br /> Tert-butyl alcohol ND 20 <br /> Surrogate 1,2-Dichloroethane-d4 101 % 70-130 <br /> Surrogate Toluene-d8 101 % 70-130 " <br /> i <br /> � <br /> ) /02 18 05 <br /> MW-18(L20602]-21)Water Sampled D 110/DZ l2 35 Received Db/l1. <br /> 1,2-Dibromoethane _ ND 10 ugrl 1_ 2060021 06/13/02 06/14/02 FEPA 8260E <br /> I,2-Dichloroethane ND 10 <br /> Di-isopropyl ether ND 10 <br /> Ethyl tert-butyl ether - ND 10 _ ^ <br /> Methyl tert-butyl ether ND 10 <br /> Tert-amyl methyl ether ND 10 " <br /> Tert-butyl alcohol ND 20 <br /> Svrrngnry 1 7-1]rrhlnrnethane-d4 106% 70-130 <br /> Surrogate Toluene-d8 990% 70430 " <br /> MW-18D(1,206021-22)Water Sampled_06/10/02 13 10 Received 06/11/02 18.05 _ T <br /> =1,2-Dibromoethane --- --- _ T.ND _ _ __1 0_—ug/1_--_I--2060023- 06/14/02--06114102 ----EPA 8260B __ <br /> 1,2-Dichloroethane ND 10 ^ ^ <br /> -Di-isopropyl ether -1 0 <br /> Ethyl tert-butyl ether ND 1 0 <br /> Methyl tert-butyl ether ND 10 <br /> Ten-amylmethylether_ - _ _ ND_ _ 10 _ <br /> Tert-butyl alcohol ND 20 " <br /> Surrogate 1,2-Dichloroethane-d4 104% 70-130 , <br /> Surrogate Toluene-d8 - 992% 70-130 <br /> v� <br /> Sequoia Analytical -San Carlos The results in thts report apply to the samples analyzed in accordance with the chain of <br /> custody document This analytical report must be reproduced in its entirety <br /> Page 70 of 103 <br />