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Sequoia <br /> 404 N Lane <br /> L. 4i Walnut Creek,, CA CA 9459$ <br /> i!D (925)988-9600 <br /> WOAnalytical FAX (925)988-9673 <br /> Gettler Ryan,hie -Dublin Project Unocal <br /> 6747 Sierra Court Suite I Project Number'Unocal#0187 Reported <br /> Dublin CA,94568 Project Manager Deanna L Harding 09-Mar-00 10 44 <br /> Total Purgeable Hydrocarbons (C6-C12),BTEX and MTBE by DHS LUFT - Quality Control <br /> n Sequoia Analytical -Walnut Creek <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result °/aREC Limits RPD Limit Notes <br /> Batch 00O2001 -EPA 5030B [P/TJ -- - <br /> Blank(00O2001-BIXI) Prepared&Analyzed 02-Mar-00 <br /> Purgeable Hydrocarbons ND 50 ugn <br /> Benzene ND 0 50 " <br /> 'toluene ND 030 " <br /> Ethylbenzene ND 050 " <br /> Xylenes(total) ND 050 " <br /> Methyl telt-butyl ether ND 25 " <br /> Surrogate a,4a-Tnflaorotoluene 285 300 950 70-130 <br /> LCS(00O2001-BSI) Prepared&Analyzed 02-Mar-00 <br /> Benzene 175 050 ugl! 200 875 70-130 <br /> Toluene 182 0 50 " 200 910 70-130 <br /> Ethylbenzene 176 0 50 200 - 880 70-130 <br /> _ _Xylenes(total) _ _ _ 586 050- _ _ 600 977 70-130 <br /> Surrogate a aa-Trrfluorotoluene 268 300 893 70.130 <br /> Matna Spike(00O2001MSI) Source W003001-0IRE1Prepared&Analyzed 02-Mar-00 <br /> Benzene 173 050 ugli 200 ND 86 5 70-130 <br /> Toluene -- - -_ - -- ---17 6 �0 50=—"�---20 0- —ND—__88 0=�70=130�T---`` <br /> Ethylbenzene 185 050 200 ND 925 70-130 <br /> Xylenes(total}- �- -- --- W- -- - --59 2 - -0-50-- -- -CO—0 - ND 98 7-- -70-130 -- -- W - <br /> --_Surrogate aqa-Trlfluorotoluene--_-- - -278 - — _-- _ -_ _ 300 _ -- � - 92 7- _70-130 _ <br /> Matrix Spike Dup(00O2001-MSD1) Source W003001-0IREIPrepared&Analyzed 02-Mar-00 <br /> Benzene 176 0 50 urA 200 ND 880 70-130 172 20 <br /> Toluene 178 050 200 ND 89 0 70-130 113 20 <br /> Ethylbenzene 182 0 50 200 ND 910 70-130 163 20 <br /> Xylenes(total) 592 0 50 600 ND 970 70-130 170 20 <br /> Surrogate Orta-Tnfluorotoluene 259 300 863 70-130 <br /> Sequoia Analybcal-Walnut Creek The results to this report apply to the samples analyzed to accordance with the chaino <br /> custody document. This analytical report must be reproduced in its entire* <br /> Page 16 of 22 <br />