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,i 404 N Vftet Lane <br /> Sequoia <br /> Walnut (c 988-960C <br /> FAX(925)%8-%7-- <br /> Analytical <br /> 8-%7-Analytical """"i-%equolalabs coin <br /> Wer Ryan,Inc -Dublin Project. Unocal <br /> 6747 Sierra Court Suite] Project Number Unocal# 1205 Reported <br /> Dublin CA,94568 Project Manager Deanna L Harding 09-Feb-01 07 55 <br /> Total Purgeable Hydrocarbons (C6-C12), BTEX and MTBE by DHS LUFT - Quality Control <br /> Sequoia Analytical -Walnut Creek <br /> Reporting Spike Source oAREC RPD <br /> Analyte Result Limit Units Level Result %REC Litnits RPD Limit Notes <br /> Batch 1B07001-EPA 5030B [PIT] <br /> Blank(1B07001-BLKI) Prepared&Analyzed.07-Feb-01 <br /> Purgeable Hydrocarbons ND 50 ug/l <br /> Benzene ND 0 50 " <br /> Toluene ND 0 50 " <br /> Ethylbenzene ND 050 " <br /> Xylenes(total) ND 050 " <br /> Methyl tort-butyl ether ND 2 5 " <br /> Surrogate qq a-TnAtorotoluene 308 300 103 70-130 <br /> LCS(1B07001-BSI) Prepared&Analyzed 07-Feb-01 <br /> Benzene 188 0 50 ug/1 20 0 940 70-130 <br /> Toluene 195 0 50 200 975 70-130 <br /> Ethylbenzene 205 0 50 200 103 70-130 <br /> AV(total) 614 0 50 600 102 70-130 <br /> W-11 q4a-Tnfluorotalaene 293 " 300 977 70-130 <br /> Matnx Spike(1B07001-MSI) Source W101691-01 Prepared&Analyzed 07-Feb-Ol <br /> Benzene 204 050 ug/1 200 ND 102 70-130 <br /> Toluene 209 0 50 200 ND 104 70-130 <br /> Ethylbenzene 216 0 50 200 ND 108 70-130 <br /> Xylenes(total) 644 0 50 " 600 ND 107 70-130 <br /> Surrogate a aa-Tri luorotahiene 318 300 106 70-130 <br /> Matrix Spike Dup(lB07001-MSD1) Source W101691-01 Prepared&Analyzed 07-Feb-01 <br /> Benzene 19 0 050 ug/1 200 ND 95 0 70-130 711 20 <br /> Toluene 199 0 50 200 ND 995 70-130 490 20 <br /> Ethylbenzene 209 050 200 ND 104 70-130 377 20 <br /> xylenes(total) 62.6 0 50 60 0 ND 104 70-130 283 20 <br /> Surrogate a a a-Trii luorotoluene 306 It300 102 70.130 <br /> The results in dus report apply to the samples analyred in accordance with the chain a <br /> eC1U0Ia AII11ytiC31-Walnut Creek I <br /> custody document.This analytical reparT must be nprodwed in its entirety <br /> Page 12 of 14 <br />