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3 r <br /> Gettler-11yan/Geostrategies(l) Project Unoca](4) <br /> 6747 Sierra Court,Suite 7 Project Number Fonner Unocal SS##0187 ]reported <br /> Dublin CA,94568 Project Manager Deanna Harding 05/30/01 13 32 <br /> Total Purgeable Hydrocarbons`(C&C12),BTEX and MTBE by DHS LUFT - Quality Control <br /> Sequoia Analytical- San Carlos <br /> Reporting Spike source %REC RPD <br /> Analyte _ - b Result lima I Units Level Result %REC Limits RPD Lumt— Notes <br /> Batch 1050111 -EPA 5030B (M I <br /> Blank(1050111-BLKI) Prepared&Analyzed 05/25/01 <br /> Purgeable Hydrocarbons as Gasoline ND 500 ug/1 <br /> Benzene ND 0 500 " <br /> Toluene ND 0 500 " <br /> Ethylbenzene ND 0 500 " <br /> Xylenes(total) ND 0 500 " <br /> Methyl tert-butyl ether ND 5 DO - <br /> Surrogate a a a-DYiuorotoluene 1992 100 992 70-130 <br /> LCS(1050111-BSI) Prepared&.Analyzed 05/25/01 <br /> Benzene 824 0 500 ugA 100 824 70-130 <br /> Toluene _ 808 0 500 100- 808 70-130 - <br /> _Ethylbenzene _ _ _ _ 833— _ 0 500 _ 100 _ _ 833 -70-130 . <br /> Xylenes(total) 249 0 500 300 830 70-130 <br /> Surrogate a,a,a-Trifluorotoluene 965 100 965 70-130 <br /> LCS(1050111-BS2) Prepared&Analyzed 05/25/01 <br /> ble H - - - — ——_ <br />- -Puigea ydrocarbonsasGasoline --"'-2l5- 500--ug/1=---= 5 -- -- ------_----- - -__----- <br /> Surrogate a a a-TY fluorotoluene 916 " 100 916 70-130 <br /> Matrix Spike(1050111-MS1) Source L105144-23 Prepared 05/25/01 Analyzed 05/26/01 <br /> --824 ' - - 0 500 -t-ug/I = ---100- '� ND ' 824--60A40 <br /> Toluene 805 0 500 100 ND 805 60-140 <br /> Ethylbenzene 8 19 0 500 100 ND 819 60-140 <br /> Xylenes(total) 245 0 500 300 ND 81 7 60-140 <br /> Surrogate a,a,a-Trifluorotoluene 856 100 856 70-130 <br /> Matrix Spike Dup(1050111-MSD1) Source.L105144-23 Prepared 05/25/01 Analyzed 05/26/01 _ <br /> Benzene 769 0 500 ugn 100 ND 769 60-140 691 25 <br /> Toluene 765 0 500 100 ND -76 5 60-140 5 10 25 <br /> Ethylbenzene 780 0 500 100 ND 78 0 60-140 488 25 <br /> Xylenes(total) 234 0 500 300 ND 78 0 60-140 459 25 <br /> Surrogate aa a-Trfluorotoluene 857 100 857 70-130 <br /> Sequoia Analytical-San Carlos The results in this report apply to the samples analyzed In accordance with the cha <br /> le <br /> custody document This analytical report must be reproduced in its entirety <br /> Page 23 of 33 <br />