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Sequoia 819 Sulker Avenue Suite$ <br /> Sacramento CA 95834 <br /> (916)911-9600 <br /> Analytical www (916)921-0 100 <br /> sequoialabs corn <br /> Gettler-Rvan-Rancho Cordova Project Unocal 2859 Stockton CA <br /> 3140 Gold Camp Dr Ste 170 Project Number N/A Reported <br /> Rancho Cordova CA 95670 Project Manager David Herzog 06/I3/01 13 30 <br /> Total Purgeablc Hydrocarbons (C6-C12), BTEX and MTBE by DHS LUFT - Quality Control <br /> Sequoia Analytical - Walnut Creek <br /> Reporting Spike Source %REC RPD <br /> Analvte Result Limit Units Level Result `.REC Limits RPD Limit Notes <br /> Batch I F06002- EPA 5030B McOH <br /> Matrix Spike(IF06002-MSI) Source W106082-01 Prepared 06/05/01 Analyzed 06/06/01 <br /> Benzene 0 756 00050 mg/kg 0 800 ND 945 50-150 <br /> Toluene 0 804 00050 0 800 ND 100 50-150 <br /> Erthylbcnzene 0 838 00050 0 800 ND 105 50-150 <br /> Xylenes(total) 2 52 00050 240 ND 105 50-150 <br /> Surrogate a a a-Tris luorotoluene 0 636 0 600 106 40-140 <br /> Matrix Spike Dup(I F06002-MSD 1) Source W106082-01 Prepared 06/05/01 Analyzed 06/06/01 <br /> Benzene 0 712 00050 mg/kg 0 800 ND 89 0 50-I50 3 99 20 <br /> Toluene 0 754 00050 0 800 ND 94 2 50-150 6 42 20 <br /> Wyiy[benzene 0 780 001050 0 800 ND 975 50-150 7 17 20 <br /> enes(total) 236 00050 240 ND 98 3 50-150 6 56 20 <br /> Surrogate a a a-Trifluorotoluene 0 590 0 600 98 3 40-140 <br /> Sequoia Analvttcal- Sacramento The results in this report apply to the samples analyzed in accordance with the chain of <br /> custody document This analytical report must he reproduced to its entirety <br /> I <br /> Pace 5 of 7 <br />