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' Sequoia an Carlos CA 940 0 <br /> San Carlos CA 94070 <br /> (650)232-9600 <br /> �► Analytical FAX(650)232-9612 <br /> www sequoialabs com <br /> t4Gettler-Ryan/Geostrategies(I) Project Unocal(4) <br /> 7 Sierra Court,Suite d Project Number Former Unocal 45098&Montgmery Ward Reported <br />' Min CA,94568 Project Manager Deanna Harding 03/26/02 12 44 <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-5 L203015-06 Water Sampled 03/05/02 11 06 Received 03/05/02 18 25 <br /> Tert-butyl alcohol ND 20 ug/l 1 2030017 03/08/02 03/08/02 EPA 8260B <br /> Methyl tert-butyl ether ND 10 " <br />,Di-isopropyl ether ND 1 0 " <br /> Ethyl tert-butyl ether ND I 0 <br /> Tert-amyl methyl ether ND ] 0 <br />,Surrogate 1,2-Dtchloraethane-d4 966% 70-130 <br /> MW-6(L203015-07)Water Sampled 03/05/02 11 00 Received 03/05/02 1S 25 , <br /> Tert-butyl alcohol ND 20 ug/1 1 2030017 03/08/02 03/08/02 EPA 8260B <br /> tMethyl tert-butyl ether ND 1 0 „ <br /> Di-isopropyl ether ND 1 0 <br /> Ethyl tert-butyl ether ND 10 " <br /> Tert-amyl methyl ether ND 1 0 <br /> urrogate 1,2-Dichloroethane-d4 994016 70-130 <br /> MW-7 L203015-0$ Water Sampled 03/05/02 10 05 Received 03/05/02 18 25 <br /> i butyl alcohol ND 20 ug/l 1 2030017 03/08/02 03/08/02 EPA 8260B <br /> I tert-butyl ether ND 1 0 <br /> i-isopropyl ether ND 1 0 <br /> Ethyl tert-butyl ether ND 1 0 <br /> ert-amyl methyl ether ND _1 0 <br />�urrogate 12-Dichloroethane-d4 106 % 70-130 -^ „ <br />—MW-SD L203015-09 Water Sampled 03/05/02 09 57 Received 03/05/02 18 25 R-05 <br /> ert-butyl alcohol ND 40 ug/] 2 2030028 03/14/02 03/1.4102 EPA 8260B <br /> ethyl tert-butyl ether ND 2 0 " 11 1 11 <br /> Di-isopropyl ether ND 20 " <br /> tthyl tert-butyl ether ND 20 " <br /> ert-amyl methyl ether ND 2 0 " <br /> Surrogate 12-Dichloroethane-d4 964 % 70-130 " <br /> 1 <br /> t <br /> e ora Analytical - Sara Carlos The results in this 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 /> I <br /> Page 70 of 91 <br />