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819 Sinker Ave Ste 8 <br /> Sacramento,CA 95834 <br /> I� Sequoia (916)921-9600 <br /> FAX(916)92 i-0100 <br /> Analytical wwwsequolalabsCom <br /> 3e yan-Dublin Project Former Unocal 0187,Stockton,CA 1 <br />)747 Sierra Court,Ste 3 Project Number NIA Reeporteporte d <br />)ublm CA,94568 Project Manager Deanna L Harding 02/28/03 19 02 <br /> Gasoline (2-Methylpentane to 1,2,4-Trimethylbenzene) and BTEX by EPA 8015M and 8021B <br /> Sequoia Analytical -Sacramento <br /> Reportmg <br /> malyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> IP-2-22 S302221-31 Water Sam led 02/05/03 14 15 Received-02/07/03 10 30 <br /> urgeable Hydrocarbons ND 50 ug/l 1 3020224 02/18/03 02/19/03 EPA 8015/8021 <br /> lenzene ND 0 50 „ <br /> D 0 50 <br /> N " <br /> oluene <br />.thylbenzene ND 0 50 <br />{ylenes(total) ND 050 <br /> vlethyl tert-butyl ether ND 2 0 I " <br /> surrogate a,a,a-Trrfluorotoluene 90% 60-140 " <br /> VP-2-60 S302221-32 Water Sampled 02/05/03 14 45 Received 02/07/0310 30 <br /> Purgeable Hydrocarbons 2600 1000 ug/1 20 3020224 02/18/03 02/19/03 EPA 8015/8021 <br /> 1100 <br /> Benzene 10" <br /> Toluene 35 „ <br /> 10 <br /> Ethylbenzene ND „ <br /> " <br /> Xylenes 44 10(total) <br /> Me tent-butyl ether ND 40 , <br /> Su to a,a a-Trrfluoratoluene <br /> 88% 60-140 " <br /> NP-2-116 5302221-33 Water Sampled 02/05/03 15 10 Received 02/07/0310 30 <br /> Purgeable Hydrocarbons 150 50 ugA 1 3020224 02/19/03 02/19/03 EPA 801518021 <br /> 61 050 " <br /> Benzene „ <br /> 050 <br /> Toluene ND 0 50 " <br /> Ethylbenzene ND „ <br /> 0 50 " <br /> Xylenes(total) ND <br /> Methyl tert-butyl ether 6 1 2 0 <br /> Surrogate a,a,a-Trifluorotoluene 96% 60-140 " <br /> Am <br /> oia 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 14 of 33 <br />