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ti) s@qi101a an InlRoad <br /> San CarlosOsCACA 94070 <br /> (659)232-96M <br /> Analytical FAX(650)232-9612 <br /> www sequoialabs com <br /> Gettler-Ryan/Geostrategies(I) Protect Unocal(4) <br /> 6747 Sierra Court,Suite J Pr4lect Number Former Unocal#2859,Stockton Reported <br /> Dublin CA,94568 Project Manager Deanna Harding 03/04/02 08 47 <br /> Volatile Organic 8 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-14(1.202097-18)Water Sampled 02/16/02 09 53 Received-02/17/02 11 00 <br /> 1,2-Dibromoethane ND 20 ug/I 1 2020072 02/22/02 02/22/02 EPA 8260B <br /> 1,2-Dichloroethane ND- 2 0 <br /> Di-isopropyl ether ND 2 0 <br /> Ethyl tert-butyl ether ND 2 0 +' <br /> Methyl tert-butyl ether ND 2 0 " <br /> Tert-amyl methyl ether ND 2 0 <br /> Tert-butyl alcohol ND 100 ^ „ <br /> Surrogate 1,2-Dtchloroethane-d4 107% 70-130 <br /> Surrogate Toluene-d8 980% 70-130 <br /> MW-l5(L202097-19)Water_ Sampled 02116/0211 20 Received 02117/02.11 00 <br /> 1,2-Dibromoethane ND 2 0 ug/I 1 2020072 02/22/02 02/22/02 EPA 8260B <br /> 1,2-Dtchloroethane _ ND 2 0 <br /> Di-isopropyl ether ND 2 0 <br /> Ethyl tert-butyl ether ND 2 0 ^ •• <br /> Methyl tert-butyl ether ND 2 0 <br /> Tert-amyl methyl ether ND 2 0 <br /> Tert-butyl alcohol ND 100 ^ <br /> Surrogate 1,2-Dtchloroethane-d4 110% 70-130 " <br /> Surrogate Toluene-d8 7010/ 70-130 <br /> _MW-16 JL201097-20)Water Sampled 02/16/02 10.45-Received -02/17/02-11 00 _ <br /> 1,2-Dibromoethane ND 2 0 ug/I 1 2020072 02/22/02 02/22/02 EPA 82608 <br /> W1,2-Dtchloroethane — ND- —- —2 0 <br /> Di-isopropyl ether ND 2 0 <br /> Ethyl tent-butyl ether T --=—ND-- ---2 0_--„— - <br /> Methyl tert-butyl ether ND 2 0 <br /> Tert-amyl methyl ether ND 2 p <br /> Tert-butyl alcohol ND 100 <br /> Surrogate 1,2-Dtchloroethane-d4 109% 70-130 <br /> Surrogate Toluene-d8 100% 70-130 <br /> Sequoia Analytical -San Carlos The results in this report apply to the samples analyzed in accordance with the chain <br /> custody document This analytical report must be reproduced in its entirety <br /> Page 11 of 18 <br />