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819 Stnker Ave Ste 8 <br /> Sequoia Sacrameao CA 95834 <br /> 41) (916)921-9600 <br /> qWAnalytical FAX(916)9www sequoialabs coin <br /> tiler-Ryan-Rancho Cordova Project Former Unocal 0187,Stockton,CA 5302535 <br /> 40 Gold Camp Dr,Ste 170 Project Number NIA Reported <br /> Rancho Cordova CA,95670 Project Manager Geoffrey D Risse 03/07/03 17 32 <br /> Gasoline (2-Methylpentane to 1,2,4-Trimethylbenzene) and BTEX by EPA 8015M and 8021B <br /> Sequoia Analytical - Sacramento <br /> Reporting <br /> Analyte Result Lumt Units Dilution Batch Prepared Analyzed Method Notes <br /> NP-1-22(S302535-04)Water Sampled 02/21/03 07 40 Received 02/21/03 14 50 <br /> Purgeable Hydrocarbons ND 50 USA 1 3020394 03/04/03 03/04/03 EPA 8015/8021 <br /> Benzene ND 050 " <br /> Toluene ND 050 " <br /> Ethylbenzene ND 050 " <br /> Xylenes(total) ND 050 " <br /> Methyl tent-butyl ether ND 2 0 " <br /> Surrogate a,a a-Tnfluorotoluene 84% 60-140 " <br /> NP-1-65 S302535-05 Water Sampled 02/21/03 07 50 Received 02/21/03 14 50 <br /> Purgeable Hydrocarbons ND 50 ugfl 1 3020394 03/04/03 03/04/03 EPA 8015/8021 <br /> Benzene ND 050 " <br /> Toluene ND 0 50 " <br /> Ethylbenzene ND 0 50 " <br /> Xylenes(total) ND 0 50 " <br /> Methyl tert-butyl ether ND 2 0 " <br /> 91-111 <br /> ogate a,a a-Tnfluorotoluene 91% 60-140 " <br /> (5302535-06)Water Sampled.02/21/03 08 01 Received 02/21/0314 50 <br /> Purgeable Hydrocarbons ND 50 ug(l 1 3020394 03/04/03 03/04/03 EPA 8015/8021 <br /> Benzene ND 050 " <br /> Toluene ND 050 " <br /> Ethylbenzene ND 050 " <br /> Xylenes(total) ND 050 " <br /> Methyl tert-butyl ether ND 2 0 " <br /> Surrogate a a a-Tnfluorotoluene 91% 60-140 " <br /> ota Analytical-Sacramento The results in this report apply to the samples analyzed in accordance with the chain of <br /> custody document Unless otherwise stated resulls are reported on a wet weight basis <br /> This analytical report must be reproduced in its entirety <br /> Page 4 of 9 <br />