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819 Sinker Ave Ste 8 <br /> Sacramento CA 95834 <br /> Sequoia (9 16)921-9600 <br /> FAX(916)921-0100 <br /> I—) <br /> 'WAnalytical www sequoialabscom <br /> GqWRyan-Dublin Project Former Unocal 2859,Stockton,CA S303055 <br /> 6747 Sierra Court,Ste J Project Number NIA Reported <br /> Dublin CA,94568 Project Manager Deanna L Harding 03/19/03 18 34 <br /> Gasoline (2-Methylpentane to 1,2, 1-Trimethylbenzene) and BTEX by EPA 8015M and 8021B <br /> Sequoia Analytical - Sacramento <br /> Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> NP-1 5303055-22 Water Sampled 02/27/03 17 30 Received 03/03/03 12 15 <br /> Purgeable Hydrocarbons ND 50 ugA 1 3030107 03/11/03 03/12/03 EPA 8015/8021 <br /> Benzene ND 050 <br /> Toluene ND 050 " <br /> Etbylbenzene ND 050 <br /> Xylenes(total) ND 050 " <br /> Methyl tert-butyl ether ND 2 0 " <br /> Surrogate a a,a-Trifluorotoluene 78% 60-140 " <br /> MW-]0 5303055-23 Water Sampled 02/271031810 Received 03/03/0312 15 <br /> Purgeable Hydrocarbons 47000 5000 ugA 100 3030107 03/11/03 03/12/03 EPA 8015/8021 <br /> Benzene 2100 50 " <br /> Toluene 7400 50 <br /> Ethyibenzene 1000 50 <br /> Xylenes(total) 16000 50 " <br /> Methyl tent-butyl ether ND 200 " <br /> SWale a a a-Trifluorotoluene 76910 60-140 <br /> oia Analytical- Sacramento The i esults in this i epot t 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 i eport must be repi oduced in its entirety <br /> Page 10 of 24 <br />