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~ 1551 Industnal Road <br /> . <br /> Sequoia San Carlos 23 -9600 <br /> (��awJ' y (650)232-9600 <br /> - 612 <br /> �r� Analytical WWW FAX <br /> labs Con <br /> www sequoialabs com <br /> ler-Ryan/Ci eostrategies(l) Project Tosco(1) <br /> 47 Sierra Court,Suite J Project Number Tosco(Former BP)SS#11192 Stockton Reported <br /> Dublin CA 94568 Project Manager Deanna]-larding 11/21/01 13 29 <br /> Volatile Organic 8 Oxygenated Compounds by EPA Method 8260B <br /> Sequoia Analytical - San Carlos <br /> Reporting <br /> Analyte Result Limn Units Dilution Batch Prepared Analyzed Method Notes <br /> MW-5(L1 11063-05)Water Sampled 11/09/01 15 35 Received 11/09/01 19 35 <br /> Ethanol ND 500 ugA 1 1110051 11/13/01 11/13/01 EPA 8260E <br /> 12-Dibromoethane ND 10 <br /> 1,2-Dichloroethane ND 10 " <br /> Di-isopropyl ether ND 1 0 <br /> Ethyl tent-butyl ether ND 1 0 <br /> Methyl Cert-butyl ether ND 1 0 <br /> Tert-amyl methyl etber ND 1 0 <br /> Tert-butyl alcohol ND 20 " <br /> 4iirrogate 1,2-Dichloroethane-d4 120% 70-130 " <br /> o r e;eate Toluene-d8 103% 70-130 " <br /> MW 6(1,1 1 1 063-06)Water Sampled 11/09/01 14 10 Received 11/09/01 19 35 <br /> Ethanol ND 6200 ug/1 125 1110068 11/16/01 11/1610) EPA 8260B <br /> 1,2-Dibromoethane ND 12 1. " <br /> 1. <br /> 1,2-Dichloroethane ND 12 <br /> � <br /> opropyl ether ND 12 " n <br /> tert-butyl ether ND 12 " <br /> Methyl tent-butyl ether 1800 12 <br /> Tert-amyl methyl ether ND 12 " <br /> Tert-butyl alcohol ND 250 <br /> Surrogate 1,2-Dichloroethane-d4 876% 70-130 " <br /> Surrogate Toluene-d8 100% 70-130 " <br /> MW-7(1.111063-07)Water Sampled 11/09/01 17 25 Received 11/09/01 19 35 <br /> Ethanol ND 500000 ug/i 1000 1110068 11/16/01 11/16/01 EPA 8260B <br /> 12-Dibromoethane ND 1000 1. <br /> '-Didiloroethane ND 1000 It <br /> {), i,opropyl ether ND 1000 " <br /> Ethyl tert-butyl ether ND 1000 <br /> Methyl tert-butyl ether 110000 1000 n <br /> Tert-amyl methyl ether ND 1000 n <br /> Tert-butyl alcohol 25000 20000 " <br /> Surrogate 1,1-Dichloroethane-d4 896% 70-130 ; <br /> Surrogate Toluene-d8 996% 70-130 " <br /> ]a Analytical - San Carlos The results in this reporl 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 7 of 19 <br />