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y k M1 <br /> 404 N 1Mget Lane <br /> Sequoia Walnut Creek. CA 945% <br /> (925)98&9600 <br /> Analytical F (9Z5)X73 <br /> ler Ryan,Inc -Dublin Project Unocal <br /> 747 Sierra Court Suite 3 Project Number Unocal#5886 Reported <br /> Dublin CA,94568 Project Manager Deanna L Harding 17-Mar-00 09 54 <br /> Total Purgeable Hydrocarbons (C6-C12),BTEX and MTBE by DHS LUFT - Quality Control <br /> Sequoia Analytical -Walnut Creek <br /> Reporting Spike Source °/6REC RPD <br /> IAnalyte Result Lima Units Level Result %REC Lmuts RPD Lttxttt Notes <br /> Batch 0006001 -EPA 5030B jPIT] <br /> Blank(0006001 BLKI) Prepared&Analyzed 06-Mar-00 <br /> Purgeable Hydrocarbons ND 50 ugn <br /> Benzene ND 0 50 " <br /> Toluene ND 0 50 " <br /> Ethylbenzene ND 050 " <br /> Xylenes(total) ND 0 50 " <br /> Methyl tent butyl ether ND 25 " <br /> Surrogate q aa-TYtfluorotoluene 305 300 102 70.130 <br /> LCS(0006001-BS1) Prepared&Analyzed 06-Mar-00 <br /> Benzene 184 0 50 ug/l 200 92 0 70-130 <br /> Toluene 18.8 050 200 940 70.130 <br /> Ethylbenzene 206 050 200 103 70-130 <br /> Xylenes(total) 610 050 600 102 70-130 <br /> gate qqa-Tris luorotoluene 280 300 933 70130 <br /> Matra Spike(0006001 MSI) Source W003053-05 Prepared&Analyzed 06-Mar-00 <br /> Benzene 177 050 ug/l 200 ND 885 70-130 <br /> Toluene 181 050 200 ND 905 70-130 <br /> Ethylbeazene 179 050 200 ND 895 70-130 <br /> Xylenes(total) 59 4 050 600 ND 990 70-130 <br /> Surrogate %ga-Trii luorofoluene 279 300 930 70-130 <br /> Matrix Spike Dup(0006001-MSD1) Source W003053-05 Prepared&Analyzed 06-Mar-00 <br /> Benzene 179 050 USA 20 0 ND 89 5 70-130 112 20 <br /> Toluene 185 050 200 ND 92 5 70.130 219 20 <br /> Ethyllwmene 17 7 050 200 ND 885 70-130 112 20 <br /> Xylenes(total) 612 050 600 ND 102 70-130 299 20 <br /> Surrogate c4go-Tnfluorotoluene 277 MO 923 70-130 <br /> Sequoia Analytical-Walnut Creek The results in tins report apply io the samples analyzed in accordance with the chain of <br /> custody document.This analytical report must be reproduced in its entirety <br /> s <br /> Page 22 of 27 <br />