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i� <br /> Gettkr-Ryan/Geostrategies(1) P-iect TOSCO(l) <br /> projeet Nwnber Tosco(Unocal)SS#6981 Reported <br /> 6747 Sierra Court,Suite J 07/12/0106 51 ' <br /> Dublin CA,94568 Project Manager Deanna Harding <br /> Volatile Organic 8 Oxygenated Compounds by EPA Method 8260B - Quality Control <br /> Sequoia Analytical- San Carlos <br /> sow %PM RPD <br /> Analyte Result LrmR Units Level Result <br /> SGREC Limns RPDLodi Notes <br /> Batch 1070022-EPA 5030B IPITI <br /> Source-L106220di4 Prepared 07/05/01 Analyzed 07/06/01 <br /> Matrix Spike Du (1070022-MSD1) 500 ND 798 60-140 754 25 <br /> Methyl tart-butyl ether 39 9 2 0 ug/l <br /> 421 500 844 76-114 <br /> Surrogate 1,1 Diehloroethaned4 99 0 8$-IIO <br /> Surrogate Toluene-d8 495 500 <br /> Batch 1970023-EPA 5030B PIT <br /> Blank(1070023-BLK1) Prepared&Analyzed 07/05/01 <br /> Ethanol ND 1000 U94 <br /> 1,2-Dtbromoethane ND 20 " <br /> 1,2-Dtchlotvethane <br /> ND 20 " <br /> Propyl ether ND 20 " <br /> jQpwt-butyl ether ND 2 0 " <br /> Methyl tart-butyl ether ND 20 " <br /> Tort-amyl methyl ether ND 20 " <br /> Tert-butyl alcohol ND 100 " <br /> 46 4 50 0 918 76-114 <br /> Surrogate 1,2-Dtchloroethane-d4 Soo <br /> 100 88-110 <br /> Surrogate Toluene-d8 50 2 " <br /> LCS(1070023-BS1) Prepared&Analyzed 07/05/01 <br /> Methyl tart-butyl deer <br /> 460 20 ug/1 500 920 70-130 <br /> 43 2 500 904 76-114 <br /> Surrogate 1,1-Dlchloroethane-d4 " Soo 103 88-110 <br /> Surrogate Toluene-d8 514 <br /> Matrix Spike(1070023-MSI) Source.L106220-14 Prepared&Analyzed 07/05/01 <br /> Methyl tert-butyl ether 488 20 ug/1 500 ND 976 60-140 <br /> 46 5 Soo 930 76-114 <br /> Surrogate 1,1-Dnchloroethane-l4 So 0 100 88-110 <br /> Surrogate Toluene-l8 506 " <br /> db <br /> Sequoia Analytical-San Carlos The results m this report apply to the samplesmust be!yzed in reproduced in lerei withthethe chain of <br /> custody document. This analytical repo <br /> Page 20 of 22 <br />