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------------ <br /> Gettler-Ryan/Geostrategies(1) Project: Tosco(1) <br /> 6747 Sierra Court,Suite 3 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-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 Level Result %REC Limits RPD Limit Notes <br /> Batch 1050105-EPA 5030B(P/'1) <br /> Blank(1050105-BLKI) Prepared&Analyzed:05/24/01 <br /> Purgeable Hydrocarbons as Gasoline ND 50.0 ug/l <br /> Benzene ND 0.500 " <br /> Toluene ND 0.500 " <br /> Ethylbenzene ND 0.500 " <br /> Xylenes(total) ND 0.500 " <br /> Methyl ted-butyl etber ND 5.00 " <br /> Surrogate:a,a,a-Trifluorotoluene 7.16 10.0 71.6 70-130 <br /> LCS(1050105-BSI) Prepared&Analyzed:05/24/01 <br /> Benzene 8.40 0.500 ug/l 10.0 84.0 70-130 <br /> .''stuene 8.30 0.500 10.0 83.0 70-130 <br /> # /lbenzenc 8.32 0.500 10.0 83.2 70-130 <br /> Xylenes(total) 25.3 0.500 30.0 84.3 70-130 <br /> Surrogate:a,a,a-Triuorotoluene 7.48 10.0 74.8 70-130 <br /> LCS(1050105-BS2) Prepared&Analyzed:05/24/01 <br /> Purgeable Hydrocarbons as Gasoline 267 50.0 ug/1 250 107 70-130 <br /> Surrogate:a,a,a-Trifluorotoluene 7.56 10.0 75.6 70-130 <br /> Matrix Spike(1050105-MS1) Souree:L105111-05 Prepared:05/24/01 Analyzed:05/25/01 <br /> Purgeable Hydrocarbons as Gasoline 258 50.0 ug/l 250 ND 103 60-140 <br /> Surrogate:a,a,a-Trifluorotoluene 9.26 10.0 92.6 70-130 <br /> Matrix Spike Dup(1050105-MSD1) Source:L105111-05 Prepared:05/24/01 Analyzed:05/25/01 <br /> Purgeable Hydrocarbons as Gasoline 262 50.0 ugll 250 ND 105 60-140 1.54 25 <br /> Surrogate:a,a,a-Triuorotoluene 9.47 10.0 94.7 70-130 <br /> egUOia Analytical-San Carlos The results in this report apply to the samples analyzed in accordance with the chain of <br /> i <br /> custody document. This analytical report must be reproduced in its entirety. <br /> Page 13 of 20 iI <br />