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(D (408) <br /> q 885Drive <br /> Se i101a Morgan Hi!]1 CA CA 95037 <br /> Analytical FAX 776 00 <br /> (408)ala 53 6308 <br /> www scquofalabs cam <br /> Secor-Rancho Cordova(ARCO) Project ARCO 1!4932,Stockton,CA MNA0375 <br /> 3017 Kilgore 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 Deitch Prepared Analyzed Method Notes <br /> EW-4(MNA0375-15)Water Sampled 01/13/04 15 05 Received 01/14/04 10 40 <br /> Tert-amyl methyl ether ND 5000 ug/1 5000 4010317 01/19/04 01/19/04 EPA 82608 <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 96000 2500 <br /> Toluene ND 2500 " <br /> Xylenes(total) ND 2500 <br /> Surrogate Dibromofluoromethane 108% 84-121 " <br /> iSurrogate 1,2-Dichloroethane-d4 105% 74-135 <br /> Surrogate Toluene-d8 88% 84-119 <br /> Surrogate 4-Brornofluorobenzene 93% 86-119 " <br /> EW-5(MNA0375-16)Water Sampled 01/13/04 10 54 Received 01/14/0410 40 <br /> Tert-amyl methyl ether ND 50 ugll 50 4010317 01/19/04 01/19/04 EPA 8260E <br /> Benzene ND 25 <br /> Tert-butyl alcohol ND 1000 " <br /> Di-isopropyl ether ND 50 <br /> 1,2-Dibromoethane(EDB) ND 25 <br /> 1,2-Dichloroethane ND 25 <br /> Ethanol ND 5000 " <br /> Ethylbenzene ND 25 <br /> Ethyl tert-butyl ether ND 50 " <br /> Methyl tert-butyl ether 1300 25 " <br /> Toluene ND 25 " <br /> Xylenes(total) ND 25 " <br /> Surrogate Dibromofluoromethane 108% 84-121 " <br /> Surrogate 12-D:chloroethane-d4 106% 74-135 " <br /> Surrogate Toluene-d8 91 % 84-119 " <br /> Surrogate 4-Bromofluorobenzene 93% 86-119 " <br /> Sequoia Analytical-Morgan Hill The results in this report apply to the samples analyzed in accordance with the chain <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 13 of 30 <br />