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Gettier-Ryan/Geostrategi*l) Project Tosco(1) <br /> 6747 Sierra Court,Suite J - = P-i-tNu-bet'-Tosco(Unocal)SS#6981 - u�"T <br /> Dublin CA,94568 Project Manager Deanna Harding 07/12/0106 51 <br /> Total Purgeable Hydrocarbon (C6-02) by EPA 8015M and BTEX/MTBE by EPA 8020 -Quality Control <br /> Sequoia Analytical- San Carlos <br /> Reporting Spam Source %AEC RPD <br /> Analyte Remh Ung units Level Result V.REC Unit; RPD LOW Notre <br /> Batch 1070042-EPA 5030B T <br /> Blank(1070042-BLK1) Prepared&Analyzed 07/10/01 <br /> Purgeable Hydrocarbons as Gasoline ND 50 u84 <br /> Benzwe ND 050 " <br /> Toluene ND 050 " <br /> Ethylbenzene ND 050 " <br /> Xylenes(total) ND 050 " <br /> Methyl tert-butyl ether ND 50 " <br /> Surrogate a,a a-Trifluorotoluene 992 100 991 70-130 <br /> LCS(1070042-BSI) Prepared&Analyzed 07/10/01 <br /> Benzine 904 050 ug/l 100 904 70-130 <br /> Toluene 891 050 " 100 891 70-130 • <br /> Ethylbenzene 907 050 100 907 70-130 <br /> Xylenes(total) 279 050 300 930 70-130 <br /> Surrogate a a a-Trifluorotoluene 892 100 891 70-130 <br /> LCS(1070042-BS2) Prepared&Analyzed 07/10/01 <br /> Purgeable Hydrocarbons as Gasoline 225 50 Usa 250 900 70-130 <br /> Surrogate a,a,a-Trifluorotoluene 105 " 100 105 70-130 <br /> Matrix Spike(1070042-MSI) Source.L106220-10 Prepared&Analyzed 07/10/01 <br /> Purgeable Hydrocarbons as Gasoline 186 50 ugn 250 ND 744 60-140 <br /> Surrogate a,a,a-Trifluorotoluene 992 100 991 70-130 <br /> Matrix Spike Du (1070042-MSDI) Source.L106220-10 Prepared&Analyzed 07/10/01 <br /> Purgeable Hydrocarbons as Gasoline 211 50 ug/I 250 ND 844 <br /> 60-140 12 6 25 <br /> Surrogate a,a,a-Tri luorotoluene 900 " 100 900 70-130 <br /> Sequoia Analytical-Sari Carlos The results in this report apply to the samples analyzed in accordance with the cha <br /> custody document This analytical report must be reproduced in Its entaety <br /> Page 17 of 22 <br />