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819 Striker Ave Ste 8 <br /> Sacramento,CA 95834 <br /> Sequoia (916)921-X100 <br /> Analytical www <br /> seq 6) labs co 0 <br /> wvrw sequoiaiabs com <br /> 3e yan-Dublin Project Former Unocal 0187,Stockton,CA S302221 <br /> 3747 Sierra Court,Ste ! Project Number N/A Reported <br /> Qublln 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 /> Reporting <br /> krialyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> A S302221-01 Water Sampled 02/06/03 00 00 Received 02/07/03 10 30 <br />'urgeable Hydrocarbons ND 50 ug/) 1 3020192 02/14/03 02/14/03 EPA 8015/8021 <br /> lenzene ND 050 <br />"oluene ND 0 50 <br />:thylbenzene ND 050 <br /> Q 50 „ „ <br />(yienes(total) ND <br /> vlethyl tent-butyl ether ND 20 <br /> Surrogate a,a,a-Trifluorotoluene 96% 60-140 <br /> U-1 S302221-02 Water Sampled 02/06/03 11 20 Received 02/07/03 10 30 <br /> Purgeable Hydrocarbons ND 50 ug/l 1 3020192 02/14/03 02/14/03 EPA 8015/8021 <br /> Benzene ND 050 <br /> Toluene <br /> ND 050 <br /> „ <br /> Ethylbenzene ND 050 <br /> Xylenes(total) ND 050 „ <br /> ND 20 " <br /> Me cert-butyl ether <br /> S to a,a,a-Trifluorotoluene 113% 60-140 " <br /> 15-2 S302221-03 Water Sampled 02/06/03 09 35 Received 02/07/03 10 30 <br /> Purgeable Hydrocarbons ND 50 ug/1 1 3020192 02/14/03 02/14/03 EPA 8015/8021 <br /> Benzene ND 050 <br /> " <br /> Toluene ND 050 <br /> 0 50 „ <br /> Ethylbenzene ND <br /> Xylenes(total) ND 050 „ <br /> 20 " <br /> Methyl tert-butyl ether ND „ <br /> Surrogate a,a,a-Trifluorotoluene 107% 60-140 " <br /> The results in this report apply to the samples analyzed in accordance with the chain of <br /> 1a Analytical -Sacramento <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 4 of 33 <br />