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819 Striker Ave Ste 8 <br /> Sequoia <br /> Sacramento,CA 95$34 <br /> 4-:D— (916)921-9600 <br /> Analytical <br /> FAX(916)921-0100 <br /> Gettler-Ryan-Dublin Project Former Unocal 0187,Stockton,CA 5211332 <br /> 6747 Sierra Court,Ste j Project Number N/A Reported <br /> Dublin CA,94568 Project Manager Deanna L Harding 12/27/02 17 49 <br /> Gasoline\BTEX\Oxygenates by EPA method 8260B <br /> Sequoia Analytical - Sacramento <br /> Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> U-5(5211332-06)Water Sampled 11/05/02 14 20 Received 11/12/02 09 45 <br /> Benzene - - ND 050 ug11 1 2110265 11/38/02 11/18/02 EPA 8260B <br /> Toluene ND 050 <br /> Ethylbenzene ND 050 " <br /> Xylenes(total) ND 10 <br /> Methyl tert-butyl ether ND 050 " <br /> Gasoline(C6-C10) ND 50 " <br /> Surroeate 1,2-DCA-d4 104% 60-140 " <br /> Surrogate Toluene-d8 105% 60-140 " <br /> Surrogate 4-BFB 104% 60-140 " <br /> U-16 5211332-17 Water Sampled 11/06/02 09 45 Received 11/12/02 09 45 <br /> Benzene ND 0 50 ug/l. 1 2110312 11/20/02 11/20/02 EPA 8260B <br /> Toluene ND 0 50 " " It " " " <br /> Ethylbenzene 0 58 050 " It <br /> _ " _ - _ - - <br /> Xylenes(total) ND 10 " <br /> Methyl tert-butyl ether ND 050 <br /> Gasoline(C6-C10) ND 50 " <br /> Surrogate 12-DCA-d4 112% 60-140 " <br /> Surrogate Toluene-d8 98% 60-140 " <br />==Surrogate 4-BFB 93% 60-140 <br /> U-20 S2 3 - W ter S m led 11105 7 10 eceived 2/02 0 4 <br /> Benzene 700 5 0 ug/1 10 2110282 11/19/02 11/19/02 EPA 8260B <br />_ Toluene- --12r -050-> - "-- 1- ---- -"T 11/19/02 -- "- -,- -- - -- T - <br /> Ethylbenzene 17 050 " <br /> Xylenes(total) 24 1 0 <br /> Methyl ten-butyl ether ND 050 " <br /> Gasoline(C6-C10) 1200 50 " <br /> Surrogate 12-DCA-d4 101% 60-140 <br /> Surrogate Toluene-d8 94% 60-140 <br /> Surrogate 4-BFB 88% 60-140 <br /> Sequoia Analytical-Sacramento The results in this report apply to the samples analyzed in accordance with the c <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 /> 15 of 41 <br />