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ve <br /> Sequoia 885 JarvislCA95037 <br /> Morgan Hill CA 95031 <br /> qW Analytical FAX(408)776 9600 <br /> (408)782 6308 <br /> WWW segwolalabs co <br /> Secor-Rancho Cordova(ARCO) Project ARCO#4932,Stockton,CA MNA0375 <br /> 3017 Ugore Rd Suite 100 Project Number 38984 Reported <br /> Rancho Cordova CA,95670 Project Manager Rusty Benkosky 01/28/04 16 50 <br /> Volatile Organic Compounds by EPA Method 8260B <br /> Sequoia Analytical-Petaluma <br /> Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> EW-7(MNA0375-17)Water Sampled 01/13/0415 40 Received 01/14/0410 40 <br /> Tert-amyl methyl ether ND 5000 ug4 5000 4010453 01/24/04 01/25/04 EPA 8260B <br /> Benzene ND 2500 " <br /> Tert-butyl alcohol ND 100000 " <br /> Di-isopropyl ether ND 5000 <br /> 1,2-Dibromoethane(EDB) ND 2500 " <br /> 1,2-Dichloroethane ND 2500 " <br /> Ethanol ND 500000 <br /> Ethylbenzene ND 2500 " <br /> Ethyl tert-butyl ether ND 5000 <br /> Methyl tert-butyl ether 110000 2500 " <br /> Toluene ND 2500 " <br /> Xylenes(total) ND 2500 " <br /> Surrogate Dibromofluoromethane 93% 84-121 " <br /> Surrogate 1,2-Dtchloroethane-d4 81 °/a 74-135 " " • <br /> Surrogate Toluene-d8 94% 84-119 " <br /> Surrogate 4-Bromofluorobenzene 95% 86-119 <br /> DMW-1(MNA0375-18)Water Sampled 01/13/0410 00 Received 01/14/0410 40 <br /> Tert-amyl methyl ether ND 10 ug/l 1 4010397 01/21/04 01/21/04 EPA 8260E <br /> Benzene ND 050 <br /> Tert-butyl alcohol ND 20 " <br /> bi-isopropyl ether 4 2 to " <br /> 1,2-Dibromoethane(EDB) ND 0 50 " <br /> 1,2-Dichloroethane 7 6 050 <br /> Ethanol ND 100 " <br /> Ethylbenzene ND 050 <br /> Ethyl tert-butyl ether ND 10 " <br /> Methyl tert-butyl ether 25 050 " <br /> Toluene ND 050 <br /> Xylenes(total) ND 050 <br /> Surrogate Dibromofluoromethane 106% 84-111 <br /> Surrogate 1,1-Dtchloroethane-0 101 % 74-135 " <br /> Surrogate Toluene-d8 110% 84-119 " <br /> Surrogate 4-BromoJluorobenzene 108% 86-119 " <br /> Sequoia Analytical-Morgan Hill The results In this report apply to the samples analyzed in accordance with the chairs <br /> ojcustody document Unless otherwise stated results are reported on a wet weight <br /> basis This analytical report must be reproduced in its entirety • <br /> Page 14 of 30 <br />