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Sequoia 619 Sinker Ave Ste 8 <br /> Sacramento,CA 95834 <br /> (916)921-9600 <br /> Analytical <br /> FAX(916)92 1-0100 <br /> www sequoialabs coin <br /> Gettler-Ryan-Dublin Project Unocal 5098,Stockton, CA <br /> 747 Sierra Court,Ste J 5210010 <br /> Project plumber N/A Reported <br /> blin CA,94568 Project Manager Deanna L Harding 10/14/02 ]8 46 <br /> Volatile Organic Compounds by EPA Method 8260B <br /> Sequoia Analytical - Sacramento <br /> Reporting <br /> Analyie Result Limit Units Dilution <br /> Batch Prepared Analyzed Method Nates <br /> MW-12 5210070-14 Water Sam led 09/23/02 13 32 Received 09/26/02 18 35 <br /> ethylene chloride ND 10 ugA 10 2100085 10/05/02 10/05/02 EPA 8260B <br /> ethyl tern-butyl ether ND 5 0 " <br /> Naphthalene ND 10 <br /> I-Propylbenzene 14 5 0 ;; <br /> tyrenc ND 50 „ <br /> 1,1,1,2-Tetrachloroethane ND 5 0 „ <br /> 1,2,2-Tetrachloroethane ND 10 <br /> etrachloroethene ND 50 <br /> oluene 27 5 0 " <br /> 1,2,3-Trichlorobenzene <br /> ND 5 0 „ <br /> 12,4-Tnchlorobenzene ND 5 0 <br /> 1,1-Tnchloroethane ND 5 0 „ <br /> 1,1,2-Trichloroethane ND 5 0 <br /> t2ichloroetherie ND 5 0 <br /> chlorofluoromethane ND 5 0 <br /> , ,3 Trrchloropropane ND 10 <br /> WCrhlonde <br /> imethylbenzene 7 5 5 0nmethylbenzene ND 5 0 <br /> ND 5 0 <br /> Total Xylenes 28 5 0 „ <br /> Irrogate Dtbromofluoromethane 97% 70-130 <br /> rrogate 1,2-DCA-d4 114% 70-130 « <br /> Surrogate Toluene-d8 119% 70-130 „ <br /> 17 <br /> 7ate 4-BFB 115% 70-130 <br /> Via 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 52 of l l 9 <br />