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Gettier-Ryan/Geostrategies(1) PMCC' Tosca(1) <br /> 6747 Siem Court,Suite J Project Nwnhe r Former Unocal SS##4409 RepO1'ted <br /> Dublin CA,94568 Froled MR-W Deanna Harding 07/23/0108 28 <br /> Volatile Organic 8 Oxygenated Compounds by EPA Method 8260B - Quality Control <br /> Sequoia Analytical- San Carlos <br /> Reporting Spft Source xRaC "D <br /> p-lyte Resuh Lmm Uurta Level Result 5 RSC Lamuq RPD Lori Nota <br /> Batch 1070064-EPA 5030B IP/TJ—_.. <br /> LCS(1070064-BS2) Prepared&Analyzed 07/16/01 <br /> Methyl ted4mtyl ether 486 20 ug/I Soo 972 70-130 <br /> Surrogate 1,2-D:chloroethane-I4 397 Soo 794 76-114 <br /> Surrogate Toluene-d8 496 500 992 88-110 <br /> Matnx Spike(1070064-MS1) Source L107074-03 Prepared&Analyzed 07/13/01 <br /> Methyl tertbutyl ether 390 20 u&4 500 ND 780 60-140 <br /> Surrogate 1,2-D:chloroethane-d4 428 500 856 76-114 <br /> Surrogate Toluene-d8 ill NSoo 102 88-110 <br /> Matrix Spike Dup(1070064-MSDI) Source L107074-03 Prepared&Analyzed 07/13/01 <br /> Methyl tertbutyl ether 466 20 ug/l 500 ND 932 60-140 178 25 <br /> Surrogate 1,2-Dichloroehane-d4 421 300 842 76-114 • <br /> Surrogate Toluene48 512 500 102 88-110 <br /> Batch 1070085-EPA 5030B /T <br /> Blank(1070085-BLK2) Prepared&Analyzed 07/19/01 <br /> Ethanol ND 1000 ug/l <br /> 1,2-Dibmmoethane ND 20 " <br /> 1,2-Dtchloroethane ND 20 " <br /> Di-isopropyl ether ND 20 " <br /> Ethyl tert-butyl ether ND 20 " <br /> Methyl tert-butyl ether ND 20 <br /> Tert-amyl methyl ether ND 20 " <br /> Tent butyl alcohol ND 100 <br /> Surrogate l,2-Dichloroethane-d4 445 Soo 890 76-114 <br /> Surrogate Taluened8 498 500 996 88-110 <br /> Sequoia Analytical-San Carlos The results in this report apply to the samples analysed in accordance with the cha <br /> custody document This analytical report must be reproduced in its entirety <br /> Page 11 of 13 <br />