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819 Sinker Ave Ste 8 <br /> Sacramento CA 95834 <br />,!Z� Sequoia (916)921-9600 <br /> FAX(916)921-0100 <br /> Analytical www sequoialabs com <br /> L <br /> -Ryan-Dublin Project Former Unocal 2859,Stockton,CA 5308609 <br /> ierra Court,Ste J Project Number NIAReported <br /> CA,94568 Project Manager Deanna L Harding 09/11/03 14 34 <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 Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> MW-15(S308609-16)Water Sampled 08/27/03 13 05 Received 08/28/03 14 30 <br /> Purgeable Hydrocarbons 80 50 ug/l 1 3090015 09/02/03 09/02/03 EPA 8015/8021 <br /> Benzene 1.1 050 „ " <br /> Toluene ND 050 <br /> Ethylbenzene 12 050 " <br /> Xylenes(total) 1 7 050 " <br /> Methyl tert-butyl ether ND 20 <br /> Surrogate a,a,a-Trifluorotoluene 99% 60-140 " <br /> MW-16(5308609-17)Water Sampled-08/27/03 30 05 Received 08/28/03 14 30 <br /> Purgeable Hydrocarbons ND 50 ug/1 1 3090015 09/02/03 09/02/03 EPA 8015/8021 <br /> Benzene ND 050 " <br /> Toluene ND 050 " <br /> Ethylbenzene ND 050 ' <br /> X (total) ND 050 ' <br /> M tert-butyl ether ND 2 0 <br /> Surrogate a,a,a-Trifluorotoluene 88% 60-140 " <br /> MW-17(5308609-18)Water Sampled 08/26/031230 Received 08/28/03 14.30 <br /> Purgeable Hydrocarbons 64 50 ug/1 1 3090015 09/02/03 09/02/03 EPA 801519021 HC-19 <br /> Benzene <br /> ND 050 <br /> „ <br /> Toluene ND 050 " <br /> Ethylbenzene ND 0 50 " <br /> Xylenes(total) ND 050 " <br /> Methyl tert-butyl ether ND 2 0 " <br /> Surrogate a,a,a-Trtfluorotoluene <br /> 96916 60-140 " <br /> AMIL <br /> S la 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 8 of 20 <br />