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w <br /> • <br /> Gettler-Ryan/Geostrategies(1) Project Tosco(1) <br /> 6747 Sierra Court,Suite J Project Number 'Tosco SS##4409 Reported <br /> Dublin CA,94568 Project Manager Deanna Harding 04/19/01 15 27 <br /> Total Purgeable Hydrocarbons (C6-C12),BTEX and MTBE by DHS LUFr - Quality Control <br /> Sequoia Analytical - San Carlos <br /> Reporting Spike source %REC RPD <br /> Analyte Result Limit Units Level Result %REC unuts RPD lama Notes <br /> Batch 1040059-PPA 5030B(PIT) <br /> LCS(1040059-BSI) Prepared 8c Analyzed 04/18/01 <br /> Benzene 861 0 500 ug/l 100 86 1 70-130 <br /> Toluene 863 0 500 too 863 70-130 <br /> Ethylbenzene 867 0 500 100 867 70-I30 <br /> Xylenes(total) 265 0 500 300 883 70-130 <br /> Surrogate a a a-Trifluorotoluene 868 100 868 70-130 <br /> LCS(1040059-BS2) Prepared 8c Analyzed 04/18/01 <br /> Purgeable Hydrocarbons as Gasoline 260 500 ug/1 250 104 70-130 <br /> Surrogate a a a-Triuorotoluene 969 100 969 70-130 <br /> Matrix Spike(1040059-MSI) Source.L104064-12 Prepared 04/18/01 Analyzed 04/19/01 <br /> e 844 0 500 ug/I 100 ND 844 60-140 <br /> e 859 0 500 too ND 859 60-140 <br /> Ethylbenzene 846 0 500 100 ND 846 60-140 <br /> Xylenes(total) 260 0 500 300 ND 867 60-140 <br /> Surrogate a a a-Trifluorotoluene 917 100 91 7 70-130 <br /> Matrix Spike Dup(1040059-MSD1) Source L104064-12 Prepared 04/18/01 Analyzed 04/19/01 <br /> Benzene 874 0 500 ug/1 too ND 874 60-140 349 25 <br /> Toluene 8 88 0 500 " too ND 888 60-140 332 25 <br /> Ethylbenzene 870 0 500 100 ND 870 60-140 280 25 <br /> Xylenes(total) 264 0 500 300 ND 880 60-140 153 25 <br /> Surrogate a a a-Triuorotoluene 952 " 100 952 70-130 <br /> I <br /> oia Analytical- San Carlos The results to this report apply to the samples analyzed in accordance with the chain of <br /> custody document Thts analytical report must be reproduced to its entirety <br /> Page 10 of 14 <br />