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r <br /> lv <br /> Gettler-Ryan/Geostrategies(I) Project Tosco(1) " <br /> 6747 Sierra Court,Suitc J Project Number Unocal Circle K SS##1205,Lathrop,CA Reported <br /> Dublin CA,94568 Project Manager Deanna Harding 05/10/01 15 16 <br /> r <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 Uiuts Level Result %REC Limits RPD limit Notes <br /> i <br /> Batch 1050022-EPA 5030B (PIT) <br /> Blank(1050022-BLKI) Prepared&Analyzed 05/07/01 <br /> Purgeable Hydrocarbons as Gasoline ND 500 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 s a-Trtfluorotoluene 931 100 931 70-130 <br /> Blank(1050022-BLK2) Prepared&Analyzed 05/08/01 <br /> Purgeable Hydrocarbons as Gasoline ND 500 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 tert-butyl ether ND 500 " <br /> Surrogate a a a-Tnfluorotoluene 852 .100 852 70-130 <br /> LCS(1050022-BSI) Prepared&Analyzed'05/07/01 <br /> Benzene 8 65 0 500 ug/1 100 865 70-130 <br /> Toluene 874 0 500 100 874 70-130 <br /> Ethylbenzene 8 62 0 500 10 0 862 70-130 <br /> Xylenes(total) 260 0 500 300 867 70-130 <br /> Surrogate a,a a-Trtfluorotoluene 919 100 919 70-130 <br /> z <br /> LCS(1050022-BS2) Prepared&Analyzed 05/07/01 <br /> Purgeable Hydrocarbons as Gasoline 296 Soo ug/l 250 118 70-130 <br /> Surrogate a a a-Triuorotoluene 102 100 102 70-130 <br /> Sequoia Analytical- San Carlos The results in this report apply to the samples analyzed in accordance with the cha <br /> custody document This analytical report must be reproduced in its entirety <br /> Page 9 of 16 <br />