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a— ) (9819 Sinker Ave Ste 8 <br /> Sequoia Sacramento,CA 95834 <br /> iW Analytical FAX <br /> 16)921-9600 <br /> (916)921-0100 <br /> www sequoialabs com <br /> SECOR International-Rancho Cordova Project Tosco 1205,Lathrop,CA <br /> 521169$ <br /> 3017 Kilgore Road,Suite 100 Project Number N/A Reported <br /> Rancho Cordova CA,95670 Project Manager Rusty Benkosky 02/12/03 12 10 <br /> BTEX by EPA Method 8260B <br /> Sequoia Analytical- Sacramento <br /> Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> (S211698-05)Water Sampled 11al/02 06 45 Received W22/0209,15 HT-RS <br /> Ethanol ND 50 ug/1 1 2120101 12/06/02 12/06/02 EPA 8260B <br /> Tert-butyl alcohol ND 5 0 <br /> Methyl tert-butyl ether ND 2 0 <br /> Di-isopropyl ether ND 050 <br /> Ethyl tert-butyl ether ND 0 50 <br /> Tert-amyl methyl ether ND 0 50 " <br /> 1,2-Dichloroethane ND 050 " <br /> 1,2-Dibromoethane(EDB) ND 050 " <br /> Benzene ND 050 " <br /> Ethylbenzene ND 050 " <br /> Toluene 098 050 " <br /> Xylenes(total) 0 50 0 50 <br /> Gasoline(C6-C10) ND 50 " ^ <br /> Surrogate Toluene-d8 107% 60-140 " <br /> urrogate 4-BFB 115% 60-140 11 <br /> urrogate 12-DCII-d4 104% 60-140 " <br /> -12(S21169&96)Water NainRled 11121102 06 50 Received 11122 A"-9..1 <br /> Ethanol ND 50 ug/l 1 2120101 12/05/02 12/05/02 EPA 8260B <br /> Tert-butyl alcohol 250 5 0 <br /> Di-isopropyl ether ND 0 50 " <br /> Ethyl tert-butyl ether ND 0 50 <br /> Tert-amyl methyl ether 9 8 050 <br /> 1,2-Dichloroethane ND 050 " <br /> 1,2-Drbromoethane(EDB) ND 050 " ^ <br /> Benzene 13 050 <br /> Toluene 42 050 " <br /> Surrogate Toluene-d8 102% 60-140 " <br /> Surrogate 4-BFB 116% 60-140 " <br /> Surrogate 1 2-DCA-d4 106% 60-140 " <br /> Sequoia Analytical-Sacramento The results in this report apply to the samples analyzed to accordance with the chain <br /> of custody document Unless otherwise stated results are reported on a wet weight <br /> basis This analytical report must be reproduced in its entirety <br /> Page 5 of 10 <br />