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Gettler-Ryan/Geostrategses(1) Project. Tosco(1) <br /> 6747 Sierra Cow-t,Suite J ProjectNumber Tosco(Unocal)SS#6981 Repoited <br /> Dublin CA,94568 Project Manager Deanna Harding 03/22/01 13 29 <br /> Total Purgeable Hydrocarbons (C6-C12),BTEX and MTBE by DHS LUFI' -Quality Control <br /> Sequoia Analytical-San Carlos <br /> Reporting Spiile Source %iREC RPD <br /> Analyte Result Lunn Units Level Result %REC Lmuts RPD Limit Notes <br /> Batch 1030052-EPA 5030B(P <br /> Blank(1030052-BLKI) Prepared&Analyzed 03/15/01 <br /> Purgmble 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 tartbutyl ether ND 500 " <br /> Surrogate a,a,a-Trifluorotoluene 118 100 118 70-130 <br /> LCS(1030052-BSI) Prepared&Analyzed 03/15/01 <br /> Benzene 939 050-0 ug/l 100 939 70-130 <br /> *xym.,e <br /> 929 0500 100 929 70-130 <br /> 948 0500 100 948 70-130 <br /> (tom) 285 0 500 300 95 0 70-130 <br /> Surrogate a,a,a-Tri,Iluorotoluene 114 100 114 70-130 <br /> LCS(1030052-BS2) Prepared&Analyzed 03/15/01 <br /> Purgeable Hydrocarbons as Ciasohne 242 500 ug/l 250 968 70-130 <br /> Surrogate a a a-Tri#uorotoluene 115 a100 115 70-130 <br /> Matrix Spike(1030052-MSI) Source L103091-01 Prepared&Analyzed 03/15/01 <br /> Purgeable Hydrocarbons as Gasoline 242 500 ugfl 250 ND 968 60-140 <br /> Surrogate a a a-Trzfluorotoluene 128 100 128 70-130 <br /> Matrix Spike Du (1030052-MSDI) Source L103091-01 Prepared&Analyzed 03/15/01 <br /> Purgeable Hydrocarbons as Gasohne 228 500 ug/l 250 ND 91 2 60-140 5 96 25 <br /> Surrogate a,a a-Tnfluorotoluene 125 100 125 70-130 <br /> Alm ons Analytical-San Carlos Ae results in this report apply to the samples analyzed in accordance with the chain of <br /> MR6custody document This analytical report must be reproduced in Its entirety <br /> Page 16 of 25 <br />