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819 Stnker Ave Ste 8 <br /> Sequoia Sacramento CA 95834 <br /> IXN (916)921-9600 <br /> r Analytical WWWFAX(914)921-!1100 <br /> sequoialabs com <br /> ttler-Ryan-Rancho Cordova Project Former Unocal 0187,Stockton,CA S302535 <br /> 40 Gold Camp Dr,Ste 170 Project Number NIA Reported <br /> Rancho Cordova CA,95670 Project Manager Geoffrey D R1sse 03/07/03 17 32 <br /> Gasoline (2-Methylpentane to 1.,2,4-Trimethylbenzene) and BTEX by EPA 8015M and 8021B- Quality Contr <br /> Sequoia Analytical- Sacramento <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch 3020394-EPA 5030B(PfD <br /> Blank(3020394-BLK]) Prepared&Analyzed 02/27/03 <br /> Purgeable Hydrocarbons ND 50 ug/I <br /> Benzene ND 050 " <br /> Toluene ND 050 " <br /> Ethylbenzene ND 050 " <br /> Xylenes(total) ND 050 " <br /> Methyl tert-butyl ether ND 2 0 " <br /> Surrogate a a a-Trifluorotoluene 101 100 101 60-140 <br /> Blank(3020394-BLK2) Prepared&Analyzed 02/28/03 <br /> Purgeable Hydrocarbons ND 50 ug/l <br /> Benzene ND 050 " <br /> tae ND 050 <br /> ibenzene ND 050 " <br /> Xylenes(total) ND 050 " <br /> Methyl tert-butyl ether ND 2 0 " <br /> Surrogate a a a-TriJluorotoluene 104 100 104 60-140 <br /> Blank(3020394-BLK3) Prepared&Analyzed 03/03/03 <br /> Purgeable Hydrocarbons ND 50 ug/l <br /> Benzene ND 050 " <br /> Toluene ND 050 " <br /> Ethylbenzene ND 050 " <br /> Xylenes(total) ND 050 " <br /> Methyl tert-butyl ether ND 2 0 " <br /> Surrogate a a a-Triluorotoluene 103 100 103 60-140 <br /> Blank(3020394-BLK4) Prepared&Analyzed 03/04/03 <br /> Purgeable Hydrocarbons ND 50 ug/l <br /> Benzene ND 050 " <br /> Toluene ND 050 " <br /> Ethylbenzene ND 050 " <br /> Xylenes(total) ND 050 " <br /> �uola 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 6 of 9 <br />