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404 N W Set lane <br /> Walnut Creek CA 94598 <br /> Sequoia (925)9W9600 <br /> 4 11) FAX(925)988-9673 <br /> Analytical www sequolalabs COM <br /> COO <br /> Cettler Ryan,Inc -Dublin Project Unocal <br /> 6747 Sierra Court Suite J Project Number Former Unocal#2859 15-Jun-00 Ren-00 08 00 <br /> Reported <br /> Dublin CA,94568 Project Manager Deanna L Harding <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 /> Analyte Result Ltnut Units Level Result %REC Luruts RPD Limit Notes <br /> Batch OF08003-EPA 5030B [PPT] <br /> Blank(OF08003-BLK1) Prepared&Analyzed 08-Jun-00 <br /> Purgeable Hydrocarbons ND 50 ug4 <br /> Benzene ND 050 " <br /> Toluene ND 050 " <br /> Ethylbenzene ND 050 " <br /> Xylenes(Iwai) ND 050 " <br /> Methyl tat butyl ether ND 25 " <br /> Surrogate ggo-7hfluorc9oluene 317 " 300 106 70-130 <br /> LCS(0F08003-BSI) Prepared&Analyzed 08-Jun-00 <br /> Boazene 210 0 50 ugli 200 105 70.130 <br /> Toluene 216 050 200 108 70.130 <br /> 219 050 200 109 70-130 <br /> xlne) 634 050 600 106 70-130 <br /> Smrgate a ga-Yhfluaotohtene 2119 300 943 70430 <br /> Matrix Spike(0F08003-MSI) Source W005747-01 Prepared&Analyzed 08-Jun-00 <br /> Benzene 201 050 ug11 200 ND 101 70-130 <br /> Toluene 207 050 200 ND 104 70-130 <br /> Ethylbenzene 209 050 " 200 ND 104 70-130 <br /> Xylenes(total) 602 050 600 ND 100 70-130 <br /> Swnngate qc;&-Tr{Jluorotoluene 2111 300 937 70.130 <br /> Matrix Spike Dup(OF08003-MSDI) Source W005747-01 Prepared&Analyzed 08-Jun-00 <br /> Benzene 176 050 ugA 200 ND 890 70-130 13 3 20 <br /> Toluene 18.3 050 200 ND 915 70-130 12.3 20 <br /> Ethylbenzene 199 050 200 ND 995 70-130 442 20 <br /> Xylenes(total) 565 050 600 ND 942 70-130 634 20 <br /> Sumogate qqa-Mfluorowhtene 28.4 3a0 947 70-130 <br /> SIP Analytical-Walnut Creek The results In dds report apply to the samples analyzed in acxmdaeaa with the chain of <br /> custody document Tins wudylical report nmst be mprvdmeed in its entirety <br /> Page 13 of 18 <br /> 10 <br />