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Gettler-Ryan/Geostrategies(1) Project: 'Tosco(1) <br /> 6747 Sierra Court,Suite J Project Number: Unocal SS#11195 Reported: <br /> Dublin CA,94568 Project Manager: Deanna Harding 02/26/01 14:46 <br /> Total Purgeable Hydrocarbons (C6-C12),BTEX and MTBE by DHS LUFT - Quality Control <br /> Sequoia Analytical- San Carlos <br /> Reporting Spike Source %REC RPD <br /> Analyte Result limit units Level Result °/.REC limits RPD limit Notes <br /> Batch 1020059-EPA 5030B(PIT) <br /> Blank(1020059-BLKI) Prepared&Analyzed:02/21/01 <br /> Purgeable Hydrocarbons as Gasoline ND 50.0 U94 <br /> Benzene ND 0.500 " <br /> Toluene ND 0.500 " <br /> Ethylbenzene ND 0.500 " <br /> Xylenes(total) ND 0.500 „ <br /> Methyl Cert-butyl ether ND 5.00 " <br /> Surrogate:a,a,a-Trifluorotoluene 10.6 10.0 106 70-130 <br /> LCS(1020059-BS1) Prepared&Analyzed:02/21/01 <br /> Benzene 11.2 0.500 U94 10.0 112 70-130 <br /> Toluene 11.2 0.500 10.0 112 70-130 <br /> Ethylbenzene 11.5 0.500 10.0 115 70-130 <br /> Xylenes(total) 34.2 0.500 30.0 114 70-130 <br /> Surrogate:a,a,a-Tr{/luorotoluene 9.47 10.0 94.7 70-130 <br /> LCS(1020059-BS2) Prepared&Analyzed:02/21/01 <br /> Purgeable Hydrocarbons as Gasoline 270 50.0 ugfl 250 108 70-130 <br /> Surrogate:a,a,a-Trfluorotolsene 11.5 10.0 115 70-130 <br /> Matrix Spike(1020059-MS1) Source:L102074-02 Prepared:02/21/01 Analyzed:02/22/01 <br /> Purgeable Hydrocarbons as Gasoline 226 50.0 ug4 250 ND 90.4 60-140 <br /> Surrogate:a,a,a-Pfluorotoluene 9.48 10.0 94.8 70-130 <br /> Matrix Spike Du (1020059-MSDI) Source:L102074-02 Prepared:02/21/01 Analyzed:02/22/01 <br /> Purgeable Hydrocarbons as Gasoline 252 50.0 ug/l 250 ND l01 60-140 10.9 25 <br /> Surrogate:a,a,a-Mfluorotoluene 11.2 10.0 112 70-130 <br /> Sequoia Analytical-Sari Carlos The results in this report apply to the samples analyzed in accordance with the chain of, <br /> custody document.This analytical report must he reproduced in its entirety. <br /> Page 12 of 18 <br />