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— ) Sequoia 885 Jarvis Drive <br /> Morgan Hill CA 95037 <br /> Analytical (408)776 9600 <br /> J <br /> FAX equoi labs corn www sequourlabs com <br /> Secor-Rancho Cordova(ARCO) Project ARCO#4932,Stockton,CA MNJ0793 <br /> 3017 Kilgore Rd Suite 100 Project Number 63964 <br /> 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 <br /> 7� Result Lamm Units Dilution Batch Prepared Analyzed Method Note <br /> MW-11(MNJ0793-11)Water Sampled 10/26/04 17 15 Received 10/29/04 09 30 <br /> ter[-Amyl methyl ether ND 050 ugn 1 4KO4005 11/04104 11/05/04 EPA 8260B <br /> Benzene ND 050 ^ ^ « « <br /> tent-Butyl alcohol ND 20 " <br /> Di-isopropyl ether ND 050 ^ » « » <br /> 1,2-Dibromoethane(EDB) ND 050 ^ ^ <br /> 1,2-Dichloroethane ND 050 <br /> Ethanol ND 100 ^ » « <br /> Ethyl tert-butyl ether ND 050 » ^ <br /> Ethylbenzene ND 050 " ^ PE <br /> Methyl tert-butyl ether ND 050 „ « <br /> Toluene ND 050 <br /> Xylenes(total) ND 050 <br /> Gasoline Range Organics(C4-C12) ND 5o <br /> Surrogate 12-Dichloroethane-d4 90% 78-1.29 <br /> W-1(1KNJ0793-12)Water Sampled 10/27/04 12 05 Received 10/29/04 09 30 <br /> Cert-Amyl methyl ether ND 25 ug/1 50 4KO4005 11/04/04 11/05/04 EPA 82608 <br /> Benzene 30 25 11 ^ » » <br /> tert-Butyl alcohol ND 1000 <br /> Di-isopropyl ether ND 25 <br /> 1,2-Dibromoethane(EDB) ND 25 <br /> 1,2-Dichloroethane 29 25 <br /> Ethanol ND 5000 ^ ^ « <br /> Ethyl tert-butyl ether ND 25 PE <br /> Ethylbenzene ND 25 „ „ « ^ <br /> Methyl tert-butyl ether 1900 25 <br /> Toluene 28 25 ^ « « <br /> Xylenes(total) 200 25 <br /> Gasoline Range Organics(C4-C 12) ND 2500 <br /> Surrogate 1,2-Dtchloroethane-& 84% 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 re4ulrs are reported on a wet weight basis <br /> 0 This analytical report must be reproduced to Its entirely <br /> I <br /> Page 9 of 22 <br />