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Z— (408) <br /> Sequoia HJarvisDmc <br /> iMorgan II CA 95037 <br /> 776 9600 <br /> Analytical FAX(409)782-6308 <br /> www sequaielabs come <br /> Secor-Rancho Cordova(ARCO) Project ARCO#4932,Stockton,CA MNJ0793 <br /> 3017 Kilgore Rd Suite 100 Project Number 63964 Reported <br /> Rancho Cordova CA,95670 Project Manager Rusty Benkosky 11/12/04 12 23 <br /> Volatile Organic Compounds by EPA Method 8260B <br /> Sequoia Analytical -Morgan Hill <br /> Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Note <br /> MW-1(MNJ0793-01)Water Sampled 10/27/04 14 50 Received 10/29/04 09 30 <br /> tert-Amyl methyl ether ND 25 ug/l 50 4KO3010 11/03/04 11/04/04 EPA 8260B <br /> Benzene ND 25 <br /> tert-Butyl alcohol ND 1000 <br /> Di-isopropyl ether ND 25 ^ » <br /> I,2-Dibromoethane(EDB) ND 25 <br /> 1,2-Drchlaroethane 62 25 <br /> Ethanol ND 5000 " „ IC <br /> Ethyl tert-butyl ether ND 25 <br /> Ethylbenzene ND 25 <br /> Methyl tert-butyl ether 1700 25 ^ ^ ^ ^ <br /> Toluene ND 25 <br /> Xylenes(total) ND 25 <br /> Gasoline Range Organics(C4-C12) ND 2500 <br /> Surrogate 12-Dichloroethane-d4 102% 78-129 " <br /> MW-2(MNJ0793-02)Water Sampled 10/27/04 16 30 Received 10/29/04 09 30 <br /> tert-Amyl methyl ether ND 10 ugll 20 4KO3010 11/03/04 11/04/04 EPA 82608 <br /> Benzene ND l0 <br /> tert-Butyl alcohol ND 400 <br /> Di-isopropyl ether ND 10 <br /> 1,2-Dibromoethane(EDB) ND 10 <br /> 1,2-Dichloroethane 24 t0 <br /> Ethanol ND 2000 " „ » „ " " IC <br /> Ethyl tert-butyl ether ND 10 <br /> Ethylbenzene ND 10 <br /> Methyl tert-butyl ether 400 10 <br /> Toluene ND t0 <br /> Xylenes(total) ND 10 <br /> Gasoline Range Organics(C4-C 12) ND 1000 » » » <br /> Surrogate 11-Drchlaroethane-d4 94% 78-129 ^ <br /> Sequoia Analytical-Morgan Hill The results in this report apply to the samples analyzed in accordance with the chain of <br /> custody document Unless otherwise stated results are reported on a wet weight basis <br /> This analytical report must be reproduced in its entirety <br /> Page 4 of 22 <br />