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619 Striker Ave Ste 8 <br /> Sequoia Sacramento, 95834 <br /> (916)92 1-9600M <br /> a_ _� <br /> FAX <br /> 6)92 <br /> -0 100 <br /> Analytical ww.sq oiala s.com <br /> 1 www.sequaialabs.com <br /> Gettler-Ryan-Dublin Project: Former Unocal 0187,Stockton,CA S309067 <br /> 6747 Sierra Court,Ste.3 Project Number: N/A Reported: <br /> Dublin CA,94568 Project Manager: Deanna L.Harding 09/15/03 16:39 <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 /> U-6(S309067-07)Water Sampled:08/29/03 10:20 Received:09/02/03 16:20 <br /> Purgeable Hydrocarbons ND 50 ug/l 1 3090052 09/04/03 09/04/03 EPA 8021B <br /> Benzene ND 0.50 <br /> Toluene ND 0.50 <br /> Ethylbenzene ND 0.50 " n <br /> Xylenes(total) ND 0.50 " <br /> Methyl tert-butyl ether ND 2.0 <br /> Surrogate:a,a,a-Trifluorotoluene 80% 60-140 " <br /> U-7(5309067-08)Water Sampled:08/29/03 14:04 Received:09/02/03 16:20 <br /> Purgeable Hydrocarbons ND 50 USA 1 3090052 09/04/03 09/05/03 EPA 8021B <br /> Benzene ND 0.50 " <br /> Toluene ND 0.50 <br /> Ethylbenzene ND 0.50 R <br /> Xifts(total) ND 0.50 <br /> MIW tett-butyl ether ND 2.0 <br /> Surrogate:a,a,a-Trifluorotoluene 82 % 60-140 " <br /> U-8(5309067-09)Water Sampled:08/29/03 13:36 Received:09/02/0316:20 <br /> Purgeable Hydrocarbons ND 50 ug/I 1 3090052 09/04/03 09/04/03 EPA 8021B <br /> Benzene ND 0.50 " <br /> Toluene ND 0.50 <br /> Ethylbenztne ND 0.50 " <br /> Xyienes(total) ND 0.50 <br /> Methyl tert-butyl ether ND 2.0 <br /> Surrogate:a,a,a-Trifluorotoluene 83% 60-140SVIFb <br /> is Analytical - Sacramento The results in this report apply to the samples analyzed in accordance with the chain of <br /> custody document. Unless otherwise slated,results are reported on a wet weight basis. <br /> This analytical report mast be reproduced in its entirety. <br /> j <br /> Page 6 of 29 ' <br />