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i <br /> 819 Striker Avenue,Suite 8 <br /> Sequoia Sacramento,)9 95834 <br /> (916)921-9600 <br /> Analytical FAX equoi labs c 00 <br /> www sequoialabs coin <br /> SECOR International-Rancho Cordova Project ARCO 5450,Stockton,CA <br /> 3017 Kilgore Road,Suite 100 Project Ntunber 5450,Stockton,CA Reported <br /> Rancho Cordova CA,95670 Project M-n- Clinton Harms 03/08/02 17 34 <br /> Total Purgeable Hydrocarbons and BTEX by DHS LUFT-Quality Control <br /> Sequoia Analytical-Sacramento <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPT} Limit Notes <br /> Batch 2030050-EPA 5030B(PIT) <br /> Blank 2030050-BLKI Prepared&Analyzed 03/04/02 <br /> Purgeable Hydrocarbons ND 050 mg/kg <br /> Benzene ND 00050 " <br /> Toluene ND 00050 " <br /> Etbylbenzene ND 00050 " <br /> Xylenes(total) ND 00050 " <br /> Surrogate a a a-Trifluorotoluene 00206 00200 103 60-140 <br /> LCS(2030050-BS1) Prepared&Analyzed 03/04/02 <br /> Benzene 00177 00050 mg/kg 00200 88 5 70430 <br /> Toluene 00182 0 0050 00200 910 70-130 <br /> Ethylbenzene 00203 0 0050 00200 102 70-130 <br /> Xylenes(total) 00584 0 0050 00600 973 70-130 <br /> 4arrogate a a a-Trifluorotoluene 00192 00200 960 60-140 <br /> atrix Spike(2030050-MSI) Source 5202335-12 Prepared&Analyzed 03/04/02 <br /> Benzene 00168 00050 mg/kg 00200 ND 840 60-140 <br /> Toluene 00173 00050 0 0200 ND 865 60-140 <br /> Ethylbenzene 00194 00050 00200 ND 970 60-140 <br /> Xylenes(total) 00556 00050 " 00600 ND 92 7 60-140 <br /> Surrogate a a a-Trifluorotoluene 00182 00200 910 60-140 <br /> M_atnx Spike Dup(2030050-MSD1) Source 5202335-12 Prepared&Analyzed 03/04/02 <br /> Benzene 00167 00050 mg/kg 00200 ND 83 5 60-140 0 597 25 <br /> Toluene 0 0173 00050 00200 ND 865 60-140 0 00 25 <br /> Ethylbenzene 0 0193 00050 00200 ND 965 60-140 0 517 25 <br /> Xylenes(total) 00558 00050 00600 ND 93 0 60-140 0 359 25 <br /> Surrogate a a a-Trifluorotoluene 00172 00200 860 60-140 <br /> 1 <br /> �equola Analytical-Sacramento The results in this report apply to the samples analyzed in accordance with the chain <br /> of custody document This analytical report must he reproduced in its entirety <br /> Page Page 12 of 17 <br />