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Gettler-Ryan/Geostrategies(1) Project. Tosco(l) <br /> 6747 Sera Court,Suite r Project Number Unocal SS##08671 Reported <br /> Dublin CA,94568 Project Manager Deanna Hardutg 02/15/01 13 12 <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 I eve/ Result %REC limns RPD l=rt Notes <br /> Batch 1020034-EPA 5030EffM <br /> LCS(1020034-BS3) Prepared&Analyzed 02/13/01 <br /> Benzene 9 66 0 500 ugfl 100 966 70-130 <br /> Toluene 979 0 500 100 979 70-130 <br /> Ethylbenzeae 958 0 500 100 95 8 70-130 <br /> Xylenes(total) 287 0 500 300 95 7 70-130 <br /> Surrogate aa a-Tri luorotoluene 101 100 101 70-130 <br /> LCS(1020034-BS4) Prepared&Analyzed 02/13/01 <br /> Purgeable Hydrocarbons as Crasohne 289 500 ug/l 250 116 70-130 <br /> Surrogate a aa-Tnfluorotoluene 997 100 997 70-130 <br /> Ratch 1020037-EPA 5030E(P/7) <br /> EL(1020037-BLKI) Prepared&Analyzed 02/13/01 <br /> Purgeable Hydrocarbons as Gasoline ND 500 ug/I <br /> Benzene ND 0 500 " <br /> Toluene ND 0 500 " <br /> Ethylbenzenc ND 0 500 " <br /> Xylenes(total) ND 0 500 " <br /> Methyl tert-butyl ether ND 5 00 " <br /> Surrogate aa a-Tnfluorotoluene 110 100 110 70-130 <br /> LCS(1020037-BS1) Prepared&Analyzed 02/13/01 <br /> Benzine 121 0 500 ug/I 100 121 70-130 <br /> Toluene 121 0 500 100 121 70-130 <br /> Ethylbeez— 123 0 500 100 123 70-130 <br /> Xylenes(total) 372 0 500 " 300 124 70-130 <br /> Surrogate a,a,a-Tr{/luorotoluene 10 7 100 107 70-130 <br /> Alm <br /> iota Analytical-San Carlos The results to 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 7 of 13 <br />