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I <br /> Sequoia 985Hill C,: 0037 <br /> Morgan Hill CA 95037 <br /> Analytical (408)7769600 <br /> FAX(409)76Z-6308 <br /> www sequosequo�alab s coinm <br /> Secor-Rancho Cordova(ARCO) Project ARCO 114932,Stockton,CA MNJ0793 <br /> 3017 Kilgore Rd Suite 100 Project Number 63964 Reported <br /> Rancho Cordova CA,95670 Project Manager Rusty Benkesky 11/12/04 12 23 <br /> Volatile Organic Compounds by EPA Method 8260B <br /> Sequoia Analytical - Morgan Hill <br /> Reporting <br /> Analyte Result tame Units Dilution Batch Prepared Analyzed Method Now <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 11/04/04EPA 8260B <br /> Benzene ND 25 " <br /> tert-Butyl alcohol ND 1000 ^ ^ ^ ^ <br /> Di-isopropyl ether ND 25 " ^ <br /> 1,2-Dibromoethane(EDB) ND 25 <br /> 1,2-Dichloroethane 62 25 <br /> Ethanol ND 5000 <br /> Ethyl tent-butylIC ether ND 25 ^ « <br /> Ethyibenzene 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 1,2-Dichloroethane-d4 102% 78-129 ^ ^ « ^ <br /> MW-2(MNJ0793-02)Water Sampled I0/27/04 16 30 Received 10/29/04 09 30 <br /> tert-Amyl methyl ether ND 10 ug/I 20 4KO3010 11/03/04 11/04/04 EPA 8260B <br /> Benzene ND 10 „ <br /> tert-Butyl alcohol ND 400 <br /> Di-isopropyl ether ND 10 <br /> 1,2-Dibromoethane(EDB) ND 10 <br /> 42-Dichloroethane 24 10 <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 10 <br /> Xylencs(total) ND 10 <br /> Gasoline Range Organics(C4-C12) ND 1000 <br /> Surrogate 1,2-Dlchloroeihane-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 staled results are reported on a wet weight baso <br /> This analytical report must be reproduced in its entirety <br /> Page 4 of 22 <br />