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Sequoia 819 toAve Ste <br /> Sacrame , 958344 <br /> (916 <br /> (916)9292 1-9600 <br /> FAX Analytical www.sequoiaLabs.com Labs.c2 1 00 <br /> www.sequoialabs.com <br /> er-Ryan-Dublin Project: Former Unocal 0187,Stockton,CA 5306048 <br /> 7 Sierra Court,Ste.] Project Number. NIA 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 8O15M and 8O21B - 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 3060085-EPA 5O30B(P <br /> Laboratory Control Sample(3060085-BS2) Prepared&Analyzed:06/06/03 <br /> Surrogate:a,a,a-Triuorotoluene 9.72 u9/1 10.0 97 60-140 <br /> Matrix Spike(3060085-MSI) Source: 5305682-01 Prepared&Analyzed:06/05/03 <br /> Benzene 10.8 0.50 ug/l 10.0 ND 108 60-140 <br /> Toluene 10.9 0.50 10.0 ND 109 60-140 <br /> Ethylbenzene 10.9 0.50 10.0 ND 109 60-140 <br /> Xylenes(total) 30.3 0.50 30.0 ND 101 60-140 <br /> Methyl tert-butyl ether 11.5 2.0 " 10.0 ND 115 60-140 <br /> Surrogate:a,a,a-Trifluoroioluene 9.99 10.0 100 60-140 <br /> Niftriv';nike Du (3060085-MSDI) Source: 5305682-01 Prepared&Analyzed:06/05/03 <br /> 14wav 11.3 0.50 ug/l 10.0 ND 113 60-140 5 25 <br /> Toluene 11.3 0.50 10.0 ND 113 60-140 4 25 <br /> Ethylbenzene 11.2 0.50 10.0 ND 112 60=140 3 25 <br /> Xylenes(total) 30.5 0.50 30.0 ND 102 60-140 0.7 25 <br /> Methyl tent-butyl ether 11.7 2.0 10.0 ND 117 60-140 2 25 <br /> Surrogate:a,a,o-Trifluorotoluene 9.96 10.0 100 60-140 <br /> Batch 3060103-EPA 5O30B PIT <br /> Blank(3060103-BLKI) Prepared&Analyzed:06/06/03 <br /> Purgeable Hydrocarbons ND 50 ug/I <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,o-Triuorotoluene 9.78 10.0 98 60-140 <br /> 018 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 24 of 32 <br /> a <br />