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Gettler-ltyanlGeostrategies(1) Prgect Unocal(4) <br /> ProjectNuamber Former Unocal SS##2859/1665 Pactfic Ave Reported <br /> 6747 Sierra Court,Suite] 06/21/01 12 03 <br /> Dublin CA,94568 Project M8D8 Deanna Harding <br /> Volatile Organic 8 Oxygenated Compounds by EPA Method 8260B - Quality Control <br /> Sequoia Analytical-San Carlos <br /> Spam Source %AEC RPD <br /> RepO7VRPD Lumt Notes <br /> Result Lad� Umts UNCI ResultY.REC i.rm�ts <br /> Batch 1060033-EPA 5030B PIT <br /> LCS(1060033-BSI) Prepared&Analyzzed 06/07/01 <br /> Methyl tert-butyl ether 502 20 ugn Soo 100 70-130 <br /> 50 2 " 500 100 76-114 <br /> Surrogate 1,1-Dichloroethane-d4 " 101 88-110 <br /> Surrogate Toluene-d8 50 5 Soo <br /> LCS(1060033-BS2) Prepared&Analyzed 06/11/01 <br /> Methyl tert-butyl ether <br /> 462 20 119/1 500 924 70-130 <br /> 50 0 Soo 100 76-114 <br /> Surrogate !,2-Dichloroethaned4 95 6 8$-110 <br /> Surrogate Toluene-d8 47 8 500 <br /> LCS(1060033-BS3) Prepared&Analyzed 06/12/01 <br /> ASkyI tert-butyl ether 492 20 ug/l 500 984 70-130 <br /> SO 0 SO 0 !00 76-114 <br /> ogate 1,1-D+chloroethane-d4 103 88-110 <br /> Surrogate Toluene-l8 S13 500 <br /> Matrix S ike(1060033-MS1) Source L106035-02 Prepared&Analyzed 06/07/01 <br /> Methyl test-butyl ether 111 20 ug/I 500 56 110 60-140 <br /> 49 2 Soo 984 76-114 <br /> Surrogate 1,2-Dichloroethane�4 101 88-110 <br /> Surrogate Toluene-d8 503 Soo <br /> Matrix Spike Du (1060033-MSD!) Source L106035-02 Prepared&Analyzed 06/07/01 <br /> Methyl tart-butyl ether 112 20 u9/1 Soo 56 112 60-140 0 897 25 <br /> 51 I SO 0 101 76-114 <br /> Surrogate 1,2- oichloroethane-d9 105 88-110 <br /> Surrogate Toluene-d8 524 500 <br /> Batch 1060034-EPA 5030B PIT <br /> Blank(1060034-BLK1) Prepared&Analyzed 06/0 8/01 <br /> Ethanol ND 1000 119/1 <br /> 1,2-Mbromoethane ND 20 " <br /> 1,2-Mchloroethane ND 20 <br /> Di-isopropyl ether ND 20 " <br /> Ethyl tett butyl ether ND 20 " <br /> Methyl tert butyl ether ND 20 " <br /> Tert-amyl methyl ether ND 20 " <br /> Tert-butyl alcohol ND 100 " <br /> 45 8 " SO 0 916 76-114 � <br /> Surrogate 12-Dichtoroethane-d4 105 88-110 <br /> .debmgate Toluene-d8 526 500 <br /> —Sequoia Analytical-Sari 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 18 of 20 <br />