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Gettler-Ryan/Geostrategies(1) Project- Unocal(4) <br /> 6747 Sierra Court,Suite 3 Prole ct Nwnber Former Unocal SS#2859/1665 Pacific Ave nep°rtea <br /> Dublin CA,94568 Project Manaser Deanna Harding 06/21/01 12 03 <br /> Total Purgeable Hydrocarbons (C6-C12),BTEX and MTBE by DHS LUFT - Quality Control <br /> Sequoia Analytical- San Carlos <br /> Reporting spa- Source %REC RPD <br /> AwbU Result Lmnt Units Level Resnh %REC Lits RPD Lung Notes <br /> Batch 1060083 -EPA 5030B <br /> Blank(1060083-BLK1) Prepared&Analyzed 06/20/01 <br /> Purgeable Hydrocarbons as Gasohne ND 50 ug/t <br /> Benzene ND 050 " <br /> Toluene ND 0 50 <br /> Ethylbeazene ND 050 " <br /> Xylenes(total) ND 050 " <br /> Methyl tert-butyl ether ND 50 " <br /> Surrogate aa a-Trifluorotoluene 964 100 964 70-130 <br /> LCS(1060083-BSI) Prepared&Analyzed 06/20/01 <br /> Benzene 8 33 050 USA 100 833 70-130 <br /> 808 050 100 808 70-130 <br /> 820 050 100 820 70-130 <br /> OyleE(Z 246 050 300 82 0 70-130 <br /> Surrogate a,a,a-Triuorotoluene 101 100 101 70-130 <br /> LCS(1060083-BS2) Prepared&Analyzed 06/20/01 <br /> Purgeable Hydrocarbons as Ciasolme 241 50 119/1 250 964 70-130 <br /> Surrogate a,a,a-THfluorotoluene 105 " 100 105 70-130 <br /> Matrix Spike(1060083-MS1) Source L106061-08 Prepared 06/20/01 Analyzed 06/21/01 <br /> Purgeable Hydrocarbons as Gasoline 273 50 119/1 250 ND 109 60-140 <br /> Surrogate a a a-Trifluorotoluene 107 100 107 70-130 <br /> Matrix Spike Dup(1060083-MSDI) Source L106061-08 Prepared 06/20/01 Analyzed 06/21/01 <br /> Purgeable Hydrocarbons as Gasoline 282 50 ug/l 250 ND 113 60-140 324 25 <br /> Surrogate a aa-Trifluorotaluene 11 1 100 111 70-130 <br /> quoia Analytical-Sall 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 /> Page 16 of 20 <br />