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819 Striker Avenue Suite 6 <br /> 5834 <br /> Sequoia <br /> Sacramento <br /> 921-96M <br /> 9 <br /> FAX(916)921-0100 <br /> Analytical www seguoialabscon" <br /> Gettler-Ryan-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 06/13/01 13 37 <br /> Total Purgeable 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 "D Limit Notes <br /> Batch 1 F04007- EPA 5030B McOH <br /> Matrix Spike(IF04007-MSI) Source W106078-05 Prepared 06/01/01 Analyzed 06/02/01 <br /> Benzene 0 808 00050 mg/kg 0 800 ND 101 50-150 <br /> Toluene 0 848 00050 0 800 ND 106 50-150 <br /> Ethvibenzene 0 892 00050 0 800 ND 112 50-150 <br /> Xylenes(total) 265 00050 240 SID 110 50-150 <br /> Surrogate a a a-Trifluororoluene 0 642 0 600 107 40-140 <br /> Matrix Spike Du p(1F04007-MSD1) Source W106078-05 Prepared 06/01/01 Analvzed 06/02/01 <br /> Benzene 0 862 00050 mg/kg 0 800 ND 108 50-150 647 20 <br /> Toluene 0 902 00050 0 800 ND 113 50-150 6 17 20 <br /> Ethylbenzene 0 944 00050 0 800 ND 118 50-150 566 20 <br /> Adilylertes{total) 2$2 00050 ,I 240 ND 118 50-150 6 22 20 f <br /> Surrogate a a a Trrfluorotoluene 0 682 0 600 114 10-140 <br /> Sequoia Analytical-5acramento The results+n thrs report apply to the samples analy_ed+n accordance w+th the charm of <br /> custody document Th+s analylrcal report musl 6e reproduced+n its entrrety <br /> Page 7 of 8 <br /> k9X -- <br />