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Gettler-Ryan/Geostrategtes(1) Project ToSCOM <br /> Project Number Tosco(Unocal)SS#6981 Reported <br /> 6747 Sierra Court,Suite J 03/222/012/0113 29 <br /> Dublin CA,94568 Project Manager Deanna Harding <br /> Total Purgeable Hydrocarbons (C6-C12),BTEX and MTBE by DHS LUFI' - Quality Control <br /> Sequoia Analytical- San Carlos <br /> Reporting Sinke Source %RW RPD <br /> Analyte <br /> Result lamit Units Lave/ Result °/,M limas RPD <br /> luriit <br /> Analyte <br /> Batch 1030062-EPA 5030B(P <br /> LCS(1030062-BS3) Prepared&Analyzed 03/19/01 <br /> Bye 979 0 500 118/1 100 979 70-130 <br /> Toluene <br /> 9 68 0 500 100 %8 70-130 Ethylbenzene 983 0 500 100 983 70-130 <br /> Xylenes(total) 296 0 500 300 987 70-130 <br /> Surrogate a,a,a-Tri luorotoluene <br /> 126 100 116 70-130 <br /> LCS(1030062-BS4) Prepared&Analyzed 03/19/01 <br /> Purgeable Hydt11carbons as CYasolme <br /> 235 500 u8/1 250 940 70-130 <br /> Surrogate a,aa-Trfluorotoluene <br /> 119 100 119 70-130 <br /> z S Ilse(1030062-MSl) Source.L103052-02 Prepared&Analyzed 03/19/01 <br /> le Hydrocaibons as Gasolme 265 Soo u9A 250 13D 106 60-140 <br /> Surrogate a a a-7r)7uorotoluene <br /> 10 3 " 10 0 103 70-130 <br /> matrix S Ike Du (1030062-MSDI) Source.L103052-02 Prepared&Analyzed 03/19/01 <br /> Purgeable Hydrocarbons as Gasoline 238 500 11911250 Iii) 952 60-140 107 25 <br /> Surrogate a aa-7'rifliiorotoluene <br /> 108 100 108 70-130 <br /> Batch 1030064-EPA 5030B(P <br /> Blank(1030064-BLKI) Prepared&Analyzed 03/20/01 <br /> Purgeable Hydrocarbons as Gasoline ND 500 11811 <br /> Benzene ND 0 500 <br /> Toluene ND 0 500 " <br /> Ethylbenzene ND 0 500 " <br /> Xylenes(total) ND 0 500 n <br /> Methyl tert-butyl ether ND 500 <br /> Surrogate a,a,a-Triuorotoluene <br /> 111 " 100 <br /> 111 70-130 <br /> Upla Analytical-San Carlos The results in that report apply to the samples analyzed in accordance with the chain of <br /> custody document This analytical report must be reproduced in its entirety <br /> Page 20 of 25 <br />