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" 985 Jarvis Dave <br /> a— ) Sequoia Morgan(4Q$1)��59600 <br /> Analytical FAX(40 8)782 6368 <br /> WWW sequosalabs cie <br /> Secor-Rancho Cordova(ARCO) Project ARCO#!4932,Stockton,CA MNA0375 <br /> 3017 Kilgore Rd Suite 100 Project Number 39984 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-2(MNA0375-13)Water Sampled 01/13/0414 31 Received 01/14/0410 40 <br /> Tert-amyl methyl ether ND 2000 u@/1 2000 4010317 01/19/04 01/19/04 EPA 8260B <br /> Benzene ND 1000 " <br /> Tert-butyl alcohol ND 40000 <br /> Di-isopropyl ether ND 2000 " <br /> 1,2-Dibromoethane(EDB) ND 1000 " <br /> 1,2-Dichloroethane ND 1000 " <br /> Ethanol ND 200000 " <br /> Ethylbenzene ND 1000 " <br /> Ethyl tert-butyl ether ND 2000 <br /> Methyl tert-butyl ether 38000 1000 " <br /> Toluene ND 1000 " <br /> Xylenes(total) ND 1000 " <br /> Surrogate DibromoJluoromeihane 109% 84-122 " <br /> Surrogate 1,2-Drehloroethane-d4 105% 74-135 <br /> Surrogate Toluene-d8 89% 84-119 " <br /> Surrogate 4-Bromofluorobenzene 91 % 86-119 " <br /> EW-3(MNA0375-14)Water Sampled 01/13/04 11 33 Received 01/14/04 10 40 <br /> Tert-amyl methyl ether ND 20 W 2 4010397 01/21/04 01/21/04 EPA 8260B <br /> Benzene ND 10 <br /> Tert-butyl alcohol ND 40 " <br /> Di-isopropyl ether ND 20 <br /> 1,2-Dibromoethane(EDB) ND to <br /> 1,2-Dichloroethane ND 10 " <br /> Ethanol ND 200 <br /> Ethylbenzene ND 10 <br /> Ethyl tert-butyl ether ND 20 <br /> Methyl tert-butyl ether 39 10 " <br /> Toluene ND 10 <br /> Xylenes(total) 15 10 " <br /> Surrogate Dibromolfuoromethane 112% 84-122 " <br /> Surrogate 1,2-Dtchloroethane-d4 99% 74-135 " <br /> Surrogate Toluene-d8 108% 84-119 " <br /> Surrogate 4-Bromofluorobenzene 108916 86-119 " <br /> Sequoia Analytical-Morgan Hill The results in this report apply to the samples analyzed in accordance with the cha� <br /> ojcustody document Unless otherwise stated,results are reported on a wet weigh! <br /> basis This analytical report must be reproduced in its entirety <br /> Page 12 of 30 <br />