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a <br /> Gettler-Ryan/Geostrategies(1) Project: Tosco(1) <br /> 6747 Sierra Court,Suite J Project Number: Tosco#11195,Lathrop,CA Reported: <br /> Dublin CA,94568 Project Manager: Deanna Harding 05/25/01 14:01 <br /> Total Purgeable Hydrocarbons (C6-Cl2),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 OAREC Units RPD limit Nolen <br /> Batch 1050106-EPA 5030E(P/T) <br /> Blank(1050106-BLK1) Prepared&Analyzed:05/24/01 <br /> Purgeable Hydrocarbons as Gasoline ND 50.0 ugn <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 5.00 " <br /> Surrogate:a,a,a-Trifluorotoluene 9.13 10.0 91.3 70-130 <br /> LCS(1050106-BS1) Prepared&Analyzed:05/24/01 <br /> Benzene 8.07 0.500 ugh 10.0 80.7 70-130 <br /> Toluene 7.97 0.500 10.0 79.7 70-130 <br /> Ethylbenzene 8.13 0.500 10.0 81.3 70-130 E :f <br /> Xylenes(total) 24.4 0.500 30.0 81.3 70-130 <br /> Surrogate:a,a,a-7W luorotoluene 8.55 10.0 85.5 70-130 <br /> LCS(1050106-BS2) Prepared&Analyzed:05/24/01 <br /> Purgeable Hydrocarbons as Gasoline 226 50.0 ug/1 250 90.4 70-130 <br /> Surrogate:a,a,a-Mfluorotoluene 8.75 1110.0 87.5 70-130 <br /> Matrix Spike(1050106-MSI) Source:L105111-08 Prepared&Analyzed:05/24/01 <br /> Purgeable Hydrocarbons as Gasoline 228 50.0 ugll 250 ND 91.2 60-140 <br /> Surrogate:a,a,a-9}iuorotoluene 10.7 1110.0 107 70-130 <br /> Matrix Spike Dup(1050106-MSD1) Source:L105111-08 Prepared&Analyzed:05/24/01 <br /> Purgeable Hydrocarbons as Gasoline 231 50.0 ug/I 250 ND 92.4 60-140 1.31 25 <br /> Surrogate:a,a,a-Trifluorotoluene 10.5 " 10.0 105 70-130 <br /> Sequoia Analytical- San Carlos The results in this report apply to the samples analyzed in accordance with the chti;._= <br /> custody document This analytical report must be reproduced in its entirety. <br /> Page 14 of 20 <br />