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s rn <br /> 819 Sinker Avenue Suite 8 <br /> 4Z)— <br /> Se <br /> Sequoia Sacramento,)9 95834 <br /> - (916)921-9600 <br /> ,w` FAX www <br /> seq 6ialabs 100 <br /> om <br /> www sequoialabs com <br /> SECOR International-Rancho Cordova Project Tosco 1205,Lathrop,CA <br /> 3017 Kilgore Road, Suite 100 Project Number N/A Reported <br /> Rancho Cordova CA,95670 Project Manager Rusty Benkosky 06/14/02 1128 <br /> BTEX by EPA Method 8260B <br /> Sequoia Analytical- Sacramento <br /> Reporting <br /> Analyte Result Linut Units Dilution Batch Prepared Analyzed Method Notes <br /> GP-1(S206079-11)Water Sampled 06/05/0210 25 Received 06/06/0217 35 <br /> Ethanol ND 1000 ug/l 20 2060151 06/13/02 06/14/02 EPA 8260B <br /> Tert-butyl alcohol ND 100 " <br /> Methyl tent-butyl ether ND 10 l " <br /> Di-isopropyl ether ND 10 " <br /> Ethyl tert-butyl ether ND 10 " <br /> Tert-amyl methyl ether ND 10 " <br /> 1,2-Dichloroethane ND 10 " <br /> 12-Dibromoethane(EDB) ND 10 " <br /> Benzene 44 10 " <br /> Ethylbenzene $30 10 " <br /> Toluene 260 10 " <br /> Xylenes(total) 2500 10 " <br /> Gasohne(C6-C10) 17000 1000 " <br /> Surrogate Toluene-d8 100% 60-140 " <br /> Surrogate 4-BFB 117% 60-140 <br /> Surrogate 1,1-DCA-d4 105% 60-140 " <br /> GP-2(S206079-12)Water Sampled 06/05/021130 Received 06/06/021735 <br /> Ethanol ND 2500 ug/l 50 2060151 06/13/02 06/14/02 EPA 8260E <br /> Tert-butyl alcohol ND 250 " <br /> Methyl tert-butyl ether ND 25 " <br /> Di-isopropyl ether ND 25 " <br /> Ethyl tert-butyl ether ND 25 <br /> Tert-amyl methyl ether ND 25 " <br /> 1,2-Dichloroethane ND 25 " <br /> 1,2-Dibromoethane(EDB) ND 25 " <br /> Benzene 170 25 " <br /> Ethylbenzene 1800 25 " <br /> Toluene ND 25 <br /> Xylenes(total) 360 25 " <br /> Gasoline(C6-C10) 16000 2500 " <br /> Surrogate Toluene-d8 103% 60-140 " <br /> Surrogate 4-BFB 111 % 60-140 " <br /> Surrogate 1 1-DCA-d4 102% 60-140 " <br /> Sequoia Analytical-Sacramento The results in this report apply to the samples analyzed in accordance with the chairs o <br /> custody document This analytical report must be reproduced in its entire <br /> Page Page 5 of 12 <br />