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819 Striker Ave Ste 8 <br /> SaCram <br /> ento CA 95834 <br /> tx� Sequoia (916)921-9600 <br /> � Analytical wwsegFAX 6ialabs 100 <br /> www sequoralabs coin <br /> Ryan-Dublin Project Former Unocal 2859,Stockton,CA S303055 <br /> Ci <br /> 67 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 1,2,4-Trlmethylbenzene) 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-16($303055-19 Water Sampled 02/271031550 Received 03/03/0312 15 <br /> Purgeable Hydrocarbons ND 50 ug/l 1 3030129 03/11/03 03/11/03 EPA 8015/8021 <br /> Benzene ND 050 " <br /> Toluene <br /> ND 050 <br /> „ <br /> Ethylbenzene ND 050 <br /> Xylenes(total) ND 050 <br /> Methyl tert-butyl ether ND 2 0 " <br /> Surrogate a,a a-Trifluorotoluene 81 % 60-140 <br /> MW-17 S303055-17 Water Sampled 02/281031010 Received 03/03/0312 15 <br /> Purgeable Hydrocarbons ND 50 ug/l 1 3030129 03/11103 03/11103 EPA 8015/8021 <br /> " <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 /> S ate a a,a-Trrfluorotoluene 89% 60-140 " <br /> MW-18 S303055-18 Water Sampled 02/28/0311 05 Reserved 03/03/0312 15 <br /> Purgeable Hydrocarbons ND 50 ug/l 1 3030129 03/11/03 03/11/03 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 20 " <br /> Surrogate a,a,a-Trrfluorotoluene 83 % 60-140 <br /> ola Analytical - Sacramento The results irr this report apply to the samples analhned to accordance with the chain of <br /> custody document Unless otherwise stated results are reported on a wet weight basis <br /> This analytical r eport must be reproduced in its entirety <br /> Page 8 of 24 <br />