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Sequoia 819 Sento Ave Ste 8 <br /> Sacramento CA 95634 <br /> r ► Analytical FAX(916}921-9640 <br /> {9]6)921-0100 <br /> www eequoialabs coni <br /> tler-Ryan-Dublin Project Former Unocal 5098,Stockton,CA <br /> 6747 Sierra Court,Ste J S308091 <br /> Project Number N/A Reported <br /> Du <br /> CA,94.568 Project Manager Deanna L Harding 08/20/03 16 56 <br /> GasohneWEX\Oxygenates by EPA method 8260B <br /> Sequoia Analytical - Sacramento <br /> Reporting <br /> nafyte Result Limit Units Dilution Batch Prepared Anaiyzed Method Notes <br /> W-3 (5308091-04)Water Sampled 08/03/03 16 25 Received 08/05/03 17 35 <br /> tBenzene 2 3 0 50 ug/l 1 308014I 08/12/03 08/13/03 EPA 8260B <br /> luene ND 050 <br /> thylbenzene I 0 050 <br /> Xylenes(total) 2 5 050 <br /> Cethyl tert-butyl ether ND 2 0 „ <br /> ogate 1,2-DCA-d4 104 % 60-140ogate Toluene-d8 100% 60-140 " <br /> i i ogate 4-BFB 103 % 60-140 " <br /> W-4(S308091-05) Water Sampled 08/05/03 15 00 Received 08/05/03 17 35 <br /> Benzene 130 0 50 ug/l 1 3080160 08/18/03 08/19/03' EPA 8260B <br /> Wluene 3 2 0 50 " <br /> hylbenzene 2 4 050 „ <br /> lenes(total) 39 050 <br /> Met 1 ter,-butyl ether ND 2 0 „ <br /> to 11-DCA-d4 _9 % 60-140 <br /> rogate Toluene-d8 98% 60-140 <br /> Sui rogate 4-BFB 99% 60-140 <br /> -5(S308091-06) Water Sampled 08/05/03 10 35 Received 08/05/03 1735 <br /> nzene ND 050 ug/I 1 3080160 08118!03 06/19/03 EPA 82605 <br /> Toluene ND 050 " <br /> ylbenzene ND 050 <br /> lenes(total) 066 050 " <br /> Methyl tert-butyl ether ND 2 0 <br /> Irogate 1 2-DC,4-d4 105% 60-140 " 'I <br /> i ogate Toluene-d8 97% 60-140 <br /> Sue i ogate 4-BFB 109% 60-140 <br /> uoia Analytical- Sacramento 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 basis <br /> This analytical report must be reproduced in its entirety <br /> Page I I of 1]7 <br /> 1 <br />