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QA/QC Report <br /> Method Blank Summary <br /> Castle Analytical Laboratory, Atwater, CA <br /> Lab Report No.: H2O61804 Date: 06/27/2002 Page: 9 <br /> QC Batch: VWMS-6192 Analysis: Volatile Organic Compounds by GC/MS Fuel <br /> Matrix: Water Method: 8260FA <br /> Lab Samp ID: VWMS-6192 Prep Meth: SW5030B <br /> Analysis Date: 06/19/2002 Prep Date: 06/19/2002 <br /> Basis: Not Filtered Notes: <br /> Analyte Det Limit Rep Limit Note Result Units Pic Dil <br /> Methyl-tent-butyl ether(MTBE) 0.289 0.5 MRL ND UG/L 1 <br /> Ethyl tent-butyl ether(ETBE) 0.084 0.5 MRL ND UG/L 1 <br /> tert-Amyl methyl ether(TAME) 0.067 0.5 MRL NO UG/L 1 <br /> Di-isopropyl ether(DIPE) 0.155 0.5 MRL ND UG/L <br /> tert-Butyl alcohol (TBA) 8.79 20. MRL NO UG/L 1 <br /> 1,2-Dichloroethane 0.081 0.5 MRL ND UGIL 1 <br /> 1,2-Dibromoethane 1 0.092 0.5 MRL I NO UG/L 1 <br /> SURROGATE AND INTERNAL STANDARD RECOVERIES: 1 <br /> Toluene-d8 70-130 SLSA 110.0% <br /> 1,2-Dichloroethane-d4 70-130 SLSA 120.0% 1 <br /> • <br />