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8JamsSequoia MorganHI ll CA 950375037(408)776 9600 <br /> a— )O Analytical 17AX(409)782 6308 <br /> www sequoialabs coni <br /> Secor-Rancho Cordova(ARCO) Project ARCO#4932,Stockton,CA MN.10793 <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 Ddutton Batch Prepared Analyzed Method Note <br /> MW-9(MNJ0793-09)Water Sampled 10/26/04 16 20 Received 10/29/04 09 30 <br /> tert-Amyl methyl ether ND 050 ugll l 4KO4005 11/04/04 11/05/04 EPA 82608 <br /> Benzene ND 050 <br /> tert-Butyl alcohol ND 20 " « <br /> Di-isopropyl ether ND 050 <br /> 1,2-Dibromoethane(EDB) ND 050 <br /> 1,2-Dichloroethane 057 050 <br /> Ethanol ND 100 <br /> Ethyl tert-butyl ether ND 0 50 " " PE <br /> Ethylbenzene ND 0 50 <br /> Methyl tert-butyl ether ND 0 50 <br /> Toluene ND 0 50 " <br /> Xylenes(total) ND 050 <br /> Gasoline Range Organics(C4-C12) ND 50 « ^ <br /> Surrogate 12-Dichloroelhane-d4 88% 78-129 " ^ <br /> MW-10(MNJ0793-10)Water Sampled 10/26/04 16 45 Received 10/29/04 09 30 <br /> tent-Amyl methyl ether ND 050 ug/I 1 4KO4005 11/04/04 11/05/04 EPA 8260B <br /> Benzene ND 050 <br /> tert-Butyl alcohol ND 20 <br /> Di-isopropyl ether ND 0 50 ^ « « <br /> 1,2-Dibromoethane(EDB) ND 0 50 ^ ^ ^ ^ <br /> 1,2-Dichloroethane ND 050 <br /> Ethanol ND 100 <br /> Ethyl tert-butyl ether ND 050 " « " ^ « PE <br /> Ethylbenzene ND 050 <br /> Methyl tert-butyl ether ND 050 <br /> Toluene ND 0 50 <br /> Xylenes(total) ND 050 <br /> Gasoline Range Organics(C4-C12) ND 50 <br /> Surrogate 1 2-Dichloroethane-d4 90% 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 basrse <br /> This analytical report must be reproduced in its entirety <br /> Page 8 of 22 <br />