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Gettler-11yan/Geostrategies(1) Project: Tosco(1) <br /> 6747 Sierra Court,Suite J ProjectNumber: Tosco#11195,Lathrop,CA Reported: <br /> Dublin CA,94568 Project Manager: Deanna Harding 05/25/01 14:01 <br /> Total Purgeable Hydrocarbons (C6-C12), BTEX and MTBE by DHS LUFT - Quality Control <br /> Sequoia Analytical- San Carlos <br /> Reporting Spike Source "/oREC RPD <br /> Anatyte Resuit Limit Units Level Result %RSC limits RPD Limit Notes <br /> Batch 1050099-EPA 5030B(P/T) <br /> Blank(1050099-BLKI) Prepared&Analyzed: 05/23/01 <br /> Purgeable Hydrocarbons as Gasoline ND 50.0 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 tert-butyl ether ND 5.00 " <br /> Surrogate:a,a,a-Triuorotoluene 7.36 10.0 73.6 70-130 <br /> LCS(1050099-BS1) Prepared&Analyzed:05/23/01 <br /> Benzene 9.74 0.500 ug/1 10.0 97.4 70-130 <br /> FF.. :.luene 10.1 0.500 10.0 101 70-130 <br /> =:yylbcnzcne 10.6 0.500 10.0 106 70-130 <br /> Xylenes(total) 31.6 0.500 30.0 105 70-130 <br /> Surrogate:a,a,a-Trifluorotoluene 9.21 10.0 91.1 70-130 <br /> LCS(1050099-BS2) Prepared&Analyzed:05/23/01 <br /> Purgeable Hydrocarbons as Gasoline 244 50.0 ug/l 250 97.6 70-130 <br /> Surrogate:a,a,a-Trifluorotoluene 8.06 10.0 80.6 70-130 <br /> Matrix Spike(1050099-MSI) Source:L105109-04 Prepared&Analyzed:05/23/01 <br /> Benzene' 8.88 0.500 ug/l 10.0 ND 88.8 60-140 <br /> Toluene 8.96 0.500 10.0 ND 89.6 60-140 <br /> Ethylbenzene 8.87 0.500 10.0 ND 88.7 60-140 <br /> Xylenes(total) 26.8 0.500 30.0 ND 89.3 60-140 <br /> Surrogate:a,a,a-Trifluorotoluene 8.69 " 10.0 86.9 70-130 <br /> Matrix Spike Dull(1050099-MSD1) Source:L105109-04 Prepared&Analyzed:05/23/01 <br /> Benzene 8.97 0,500 ug/1 10.0 ND 89.7 60-140 1.01 25 <br /> Toluene 8.98 0.500 " 10.0 ND 89.8 60-140 0.223 25 <br /> Ethylbenzene 8.92 0.500 10.0 ND 89.2 60-140 0.562 25 <br /> Xylenes(total) 26.9 0.500 30.0 ND 89.7 60-140 0.372 25 <br /> Surrogate:a a,a-Triuorotoluene 8.62 10.0 86.2 70-130 <br /> dequoia Analytical-San Carlos The results in this 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 /> I <br /> Page 11 of 20 <br />