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819 Sinker Avenue Suite 8 <br /> Sento, 95634 <br /> Sacramento,(916))921-9600 <br /> 4DFAXAnal tical (916)921-0100 <br /> IW Analytical www sequoialabs com <br /> ttler-Ryan-Rancho Cordova Project Former Unocal 2859, Stockton,CA <br /> 3140 Gold Camp Dr,Ste 170 Project Number NIA Reported <br /> Rancho Cordova CA,95670 Protect Manager David Herzog 03/20/02 16 14 <br /> Total Purgeable Hydrocarbon, BTEX and MTBE by DHS LUFT- Quality Control <br /> Sequoia Analytical -Sacramento <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units level Result %REC Limits RPD Limit Notes <br /> Batch 2030182-EPA 50308 PIT <br /> Blank(2030182-BLKI) Prepared&Analyzed 03/13/02 <br /> Purgeable Hydrocarbons ND 0 50 mg/kg <br /> Benzene ND 00050 " <br /> Toluene ND 00050 " <br /> Ethylbenzene ND 0 0050 <br /> Xylenes(total) ND 00050 " <br /> Methyl tert-butyl ether ND 00050 " <br /> Surrogate a a a-Trifluorotoluene 00203 00200 102 60-140 <br /> LCS(2030182-BSI) Prepared&Analyzed 03/13/02 <br /> Benzene 00168 0 0050 mg/kg 0 0200 84 0 70-130 <br /> Toluene 0 0157 00050 00200 78 5 70-130 <br /> Ethylbenzene 00170 00050 00200 85 0 70-130 <br /> Ones(total) 00486 0 0050 00600 81 0 70-130 <br /> thyl tent-butyl ether 0 0185 00050 00200 92 5 70-130 <br /> Surrogate a a a-Trifluorotoluene 00184 00200 92 0 60-140 <br /> Matrix Spike(2030182-MSI) Source 5203185-10 Prepared&Analyzed 03/13/02 <br /> Benzene 00162 0 0050 mg/kg 0 0200 ND 81 0 60-140 <br /> Toluene 0 0163 0 0050 00200 ND 81 5 60-140 <br /> Ethylbenzene 00180 00050 00200 ND 900 60-140 <br /> Xylenes(total) 0 0526 0 0050 00600 ND 87 7 60-140 <br /> Methyl tert-butyl ether 0 0179 00050 00200 ND 89 5 60-140 <br /> Surrogate a a a-Trifluorotoluene 00164 00200 82 0 60-140 <br /> Matrix Spike Du (2030182-MSDI) Source 5203185-10 Prepared&Analyzed 03/13/02 <br /> Benzene 0 0167 0 0050 mg/kg 00200 ND 83 5 60-140 3 04 25 <br /> Toluene 00168 0 0050 00200 ND 840 60-140 3 02 25 <br /> Ethylbenzene 00186 00050 00200 ND 93 0 60-140 3 28 25 <br /> Xylenes(total) 0 0538 00050 00600 ND 897 60-140 2 26 25 <br /> Methyl tert-butyl ether 00186 0 0050 00200 ND 93 0 60-140 3 84 25 <br /> Surrogate a a a-Trrfluorotoluene 0 0173 00200 865 60-140 <br /> quota Analytical-Sacramento The)esults in this repo)r apply to the samples analyzed in accordance with the chain <br /> of custody document This analytical report must be reproduced in its entuety <br /> Page Page 5 of 7 <br />