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819 Striker Ave Ste 8 <br /> Sequoia Sacrar(91�921-9834 <br /> 66 <br /> FAX(916)921-0100 <br /> Analytical www.sequoialabs.com <br /> Gettler-Ryan-Dublin Project: Former Unocal 0187,Stockton,CA S306048 <br /> 6747 Sierra Court,Ste.3 Project Number: N/A Reported: <br /> Dublin CA,94568 Project Manager: Deanna L.Harding 06/16/03 15:43 <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-24 S306048-25 Water Sampled:05129/0313:45 Received:06102/0313:40 <br /> Purgeable Hydrocarbons 130 50 ug/l 1 3060103 06/09/03 06/09/03 EPA 8015/8021 <br /> Benzene 16 0.50 " <br /> Toluene 5.8 0.50 <br /> Ethylbenzene 2.6 0.50 " <br /> Xylenes(total) 22 0.50 " <br /> Methyl tert-butyl ether ND 2.0 <br /> Surrogate:a,a,a-Trifluorotoluene 98% 60-140 <br /> U-25 S306048-26 Water Sampled-05/29/0313:15 Received:06/02/0313:40 <br /> Purgeable Hydrocarbons ND 50 ug/1 1 3060103 06/09/03 06/09/03 EPA 8015/8021 <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 90910 60-140 <br /> U-26 5306048-27 Water Sam led:05/2810315:20 Received: 06/02/0313:40 <br /> Purgeable Hydrocarbons 53 50 ugA 1 3060103 06/10103 06/10/03 EPA 8015/8021 <br /> Benzene 11 0.50 <br /> Toluene 1.3 0.50 " <br /> Ethylbenzene ND 0.50 " <br /> Xylenes(total) 1.4 0.50 " <br /> Methyl tent-butyl ether ND 2.0 <br /> Surrogate:a,a,a-Trifluorotoluene 99% 60-140 " <br /> Sequoia Analytical - Sacramento The results in this report apply to the samples analyzed in accordance with the chain <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 12 of 32 <br />