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Sa- ) equoia <br /> 404 N WLane <br /> Walnut Creek CAA 94598 <br /> (925)988-96001 <br /> AnalyticalwFAX(925)988-9673 <br /> ww sequoialabs co <br /> Gettler Rvan Inc - Dublin Project Tosco <br /> 6747 Sierra Court Suite I Project Number Tosco# 11192 Reported <br /> Dublin CA, 94568 -Project Manager Doug Lee 24-Aug-Ol 09 09 <br /> Total Purgeable Hydrocarbons (C&C12), BTEX and MTBE by DHS LUFT - Quality Control <br /> Sequoia Analytical - Walnut Creek <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch 1H17004- EPA 5030B McOH <br /> Matrix Spike(1H17004-MS1) Source W108160-02 Prepared l0-Aug-01 Analyzed 17-Aug-01 <br /> Benzene _ 0 684 00050 mg/kg T ONO ND , 85 5 50 150 <br /> Toluene 0 726 00050 0 800 ND 908 50 150 <br /> Ethylbenzene 0 770 00050 0 800 ND 962 50-150 <br /> Xylenes(total) 228 00050 240 ND 95 0 50-150 <br /> Surrogate a a a-Trruorololuene 0 538 0 600 897 40-140 <br /> Matrix Spike Dup(1H17004-MSD1) Source W108160-02 Prepared 10-Aug-Ol Analyzed 17-Aug-01 <br /> Benzene _ 0 672 00050 mg/kg 0 800 ND 840 50-150 1 77 20 <br /> Toluene 0 718 0 0050 0 800 ND 898 50-150 1 j 1 20 <br /> Ethylbenzene 0 754 00050 0 800 ND 942 50-150 2 10 20 <br /> Xylenes(total) 226 00050 240 ND 942 50 150 0 881 20 <br /> Surrogate a a a-Triuorotoluene 0 538 0 600 897 40-140 • <br /> Sequoia Analytical - Walnut Creek The results to this report apply to the samples analyzed in accordance with the clwf <br /> custody document This analytreal report must be reproduced to its entirety <br /> Page 9 of 11 <br />