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Sequoia 819 SenAve Ste 8 <br /> Sacramento, <br /> 92 95634 <br /> Analytical equo labs.c 00 <br /> FAX(916)921-0100 <br /> www.sequoialabs.com <br /> Gettler-Ryan-Dublin Project: Former Unocal 0187, Stockton,CA S309067 <br /> 6747 Sierra Court,Ste.] 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-9(S309067-10)Water Sampled:08/29/0313:07 Received: 09/02/03 16:20 <br /> Purgeable Hydrocarbons ND 50 ug/1 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 <br /> Xylenes(total) ND 0.50 " <br /> Methyl tert-butyl ether ND 2.0 " <br /> Surrogate:a,a,a-Trifluorotoluene 83% 60-140 " <br /> U-10(S309067-11)Water Sampled:08/28/03 15:36 Received:09/02/03 16:20 <br /> Purgeable Hydrocarbons ND 50 ug/1 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 <br /> Xylenes(total) ND 0.50 " <br /> Methyl tert-butyl ether ND 2.0 " <br /> Surrogate:a,a,a-Trifluorotoluene 85% 60-140 " <br /> U-ll (5309067-12)Water Sampled:08/28/03 17:04 Received:09/02/03 16:20 <br /> Purgeable Hydrocarbons ND 50 ug/1 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 " <br /> Xylenes(total) ND 0.50 <br /> Methyl tert-butyl ether ND 2.0 <br /> Surrogate:a,a,a-Trifluorotoluene 81 % 60-140 " <br /> Sequoia 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 7 of 29 <br />