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S eq 1 Industrial Road <br /> (D (650) <br /> �.]Qla Sann Cerios CA 94070 <br /> 232-9600 <br /> IwoAna1V#ical FAX 1650)232-9612 <br /> www sequoialabs corn <br /> 0 er-Ryan/GeOstrategies(l) Project Unocal(4) L208029 <br /> Sierra Court Suite J Protect Number Former Unocal 42859 Stockton Reported <br /> Dublin CA 94568 Protect Manager Deanna Harding 08/28/02 11 23 <br /> Volatile Organic 8 Oxygenated Compounds by EPA Method 8260B <br /> Sequoia Analytical - San Carlos <br /> Reporting <br /> Analvte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> AJW-14 (L208029-14)Water Sampled 08/10/0211 23 Received 08/11/02 11 30 <br /> 1 2-Dibromoethane ND 1 0 ug/1 1 2080023 08/22/02 08/22/02 EPA 8260B <br /> 12-Dichloroethane ND 10 " ^ <br /> Di-isopropyl ether ND 10 ^ " <br /> Ethyl tert-butyl ether ND 10 " ^ <br /> Methyl tert-butyl ether ND 1 0 ^ " <br /> Teri-amyl methyl ether ND 1 0 ^ ^ <br /> Tert-butyl alcohol ND 20 " <br /> Surrogate 1,2-Dichloroethane-d4 928% 70-130 " <br /> Surrogate Toluene-d8 934 % 70-130 " <br /> A7W-15(L208029-15)Water Sampled 08/10/021250 Received 08/71/02 11 30 <br /> 1 2-Dibromoethane ND 10 ugll 1 2080023 08/22/02 08/22/02 EPA 8260B <br /> 12-Dichloroethane ND 10 " ^ <br /> Di-isopropyl ether ND 10 " <br /> Ethyl ten-butyl ether ND 1 0 " <br /> �I tert-butyl ether ND 1 0 " <br /> yl methyl ether ND 1 0 " <br /> Tert-butyl alcohol ND 20 <br /> Surrogate 1,2-Dichloroethane-d4 902 % 70-130 " <br /> Surrogate Toluene-d8 928% 70430 " <br /> MW-16(L208029-16)Water Sampled_08/10/02 12 15 Received 08/11/02 11 30 <br /> I 2-Dibromoethane ND 1 0 ug/1 1 2080023 08/22/02 08/22/02 EPA 8260B <br /> 1,2-Dichloroethane ND 10 <br /> Di-isopropyl ether ND 1 0 <br /> Ethyl tent-butyl ether ND 1 0 ^ <br /> Methyl tert-butyl ether ND 1 0 " <br /> Ten-amyl methyl ether ND 1 0 " ^ <br /> Tett-butyl alcohol ND 20 ^ " <br /> Surrogate 1,2-Dichloroethane-d4 954% 70-130 " <br /> Surrogate Toluene-d8 930% 70-130 " <br /> is Analytical - San Carlos The results in this report apply to the samples analyzed to accordance with the chain of <br /> custody document Unless otherwise stared results are reported on a wet weight basis <br /> This analytical report must be reproduced in its enirrety <br /> Page 4 of 25 <br />